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525i 89-91 M20 Engine Korman Stock Rebuild Our
stock rebuilds are assembled to BMW specifications by our experienced
and dedicated technicians rather than off a mass production assembly
line. Korman engines are assembled with meticulous craftsmanship,
precise machining, and detailed blueprinting. All of our boring is done
with a torque plate for exceptional bore roundness and long engine life.
These hand built engines are available at prices below factory reman
units and ours carry a 24 month/24,000 mile warranty. 525i
P/N 11036200 Our
Stage 1 rebuild will provide a strong increase in power through the use
of our proven performance techniques. Special valve and valve seat work,
increased compression, Korman-Stahl Headers and Stage 1 cylinder head
porting will net a gain of 12-25 HP depending on model. Performance
computer chip recommended but not required.
525i P/N 11036510 Korman
Stage 2 Competition Engine-M20 525i Our Stage 2 engines are designed for maximum performance without adversely affecting engine life or driveability. All Stage 2 Engines receive our flow testing porting and polishing, proven 3 angle valve seat work, back cut intake valves, dual valve springs, titanium retainers, Korman Rocker Arms, Korman-Stahl headers, and a Schrick 272 Camshaft (or Schrick 284 or 288). M20 "i" engines receive our aluminum flywheell. Korman performance computer chip required. 525i
P/N 11036350
Stage 1 High Performance Clean Air Engine-525i In our Stage 1 Clean Air Engines we apply our high performance techniques to extract maximum power from stock parts while making no changes that affect Federal or State emissions laws. Our flow tested porting, polishing, valve and valve seat work promote smoother, more efficient air/fuel flow keeping the mixture better suspended for cleaner burning. Valve spring pressure is increased for a higher max rev limit of 7000 rpm. To reduce reciprocating weight and improve acceleration we lighten and balance the connecting rods, fit stronger light weight piston pins, and lighten the flywheel. These techniques produce a 10-15% power increase and an engine which revs much more quickly. Korman Performance computer chip suggested, not required. 525i
P/N 110365C0 Korman Stage 2 Clean Air Engine 525i These
engines receive our Stage 2 competition-type engine treatment for
maximum emissions legal performance. Porting and polishing are more
extensive than in our Stage 1 Clean Air Engine, and all valves are swirl
polished. Also included are our titanium valve spring retainers, dual
valve springs, Korman Rocker Arms, light weight steel alloy connecting
rods, light weight piston pins and our lightened steel or aluminum
flywheel (depending on model). Tuned
exhaust headers are included with a ceramic thermal barrier coating and
our special engine oiling system modifications, special computer chip
required. 525i
P/N 11036650C Korman
2.7 Liter Stroker Engines Our
special conversions include a high performance 2.7L crankshaft and
stronger valve springs which allow safe revs to 6900 rpm. This
conversion is available on all of our M20 Stock, Stage 1 and 2
Competition and Stage 1 and 2 Clean Air Engines. Call for suggestions
and pricing for any applications not listed.
Korman
2.9 Liter M20 Engines Our
latest M20 high performance development project has been highly
successful. Super strong, tremendous torque, and very durable, this
motor brings your roughly 20 year old car up to today’s performance
standards. This motor in an
E21 323 chassis has won numerous CCA Club Racing D Mod races, often
finishing ahead of most C Mods, and even winning first overall and
regional club racing championships. Korman
2.9 ltr M20 Motor – Stage 1 Includes
special crankshaft (86mm stroke), custom length competition connecting
rods, light weight Mahle pistons, oiling system modifications for more
flow to rod bearings, oil sprayers to cool pistons and enable less
piston expansion, closer piston/wall clearance for better sealing and
longer life. Plus all our Stage 1 porting, polishing, lightening,
balancing, blueprinting etc and tuned headers and a custom computer
chip. P/N
1103690 Korman 2.9 ltr M20 Motor – Stage 2 Clean Air All of our Stage 1 parts and mods plus high performance parts that increase acceleration but do not affect exhaust emissions. K&N air filter, Korman polished rocker arms, dual valve springs, titanium valve spring retainers, lt wt piston pins, and aluminum flywheel kit (195HP) P/N 110360CA
Same as our Stage 2 Clean Air Engine but adds Schrick 288 or 304 cams plus stronger valve springs. Not designed for street/highway use for vehicles subject to EPA or state emissions standards. Includes additional porting for increased flow with Schrick cams. (235HP) P/N 1103690R Recommended Options: Extrude
honed intake manifold
Big
throttle body
Lt
wt, H.D. sport clutch assy
Dyno running-in, tuning, testing
Korman
Race Engines Whatever
your series, whatever your specifications, Korman can build you a
dependable, long lasting engine engineered for maximum power. Whether
you need a more durable engine for low cost club or vintage racing or a
325HP fully modified race winner, call us first!
M20 Engine Components Korman
Computer Chip For ECU #'s 0.261.200.173, 380, 524, 525, 526. 15hp gain, rev limit reset to 6900 RPM. P/N 124M20500
These
are Schrick's street performance cams. All give a strong increase in
power across the full rev range while retaining a smooth idle. They do
not require cutting for additional piston/valve clearance. They are
designed to perform with the BMW original fuel injection systems. Schrick
performance camshafts are not emissions legal. Sold for off road use
only. M20 Schrick Camshafts ·
Schrick 272-272º
duration, 11 mm lift. Smooth idle, works with automatic transmission.
Best when used with Korman performance chip. Dual valve springs
required. P/N 11386272323 ·
Schrick 284-284°
intake duration (11.4mm lift), 272°
exhaust duration (11.0mm lift). Split
profile cam gives nice gains at higher rpm’s without sacrificing low
end power. P/N 11386284323 ·
Schrick 288-288º
duration, 11.4mm of lift. Lumpy idle limits application to manual
transmission models only. Works best with Korman performance chip, free
flow intake and exhaust systems. Korman Dual Valve Springs and titanium
retainers required. P/N 11386288323 · Schrick 304-304° duration, 12.2mm lift. Race profile, requires modified valve train, deeper piston relief, custom fuel management or stand alone engine management. P/N 11386304323 M20
6 Cyl. Stage 2
Korman rocker
arms, dual valve springs, titanium valve spring retainers. Designed for
Schrick cams. P/N 11396420
Valve
Train Components Korman
Rocker Arms Lightened cast alloy rocker arms, contoured, peened and polished. Radiused to clear valve spring retainers with high lift cams. Sold each. M20
6 Cyl. P/N 1133K271429
Korman
Racing Rocker Arms Similar
to above, fully polished arm, pads micropolished. M20 6 Cyl. P/N 1133R271429 High
Performance Dual Valve Springs Includes
center damper spring sleeve. Long life with revs to 7600 RPM. No
cylinder head machining required. Fits all M20 engines. M20 requires use
of our titanium valve spring retainers, below. P/N 11341204N Schrick
Racing Valve Springs Made
to sustain very high spring pressures, very high cam lift, and extended
high RPM. Will maintain original tension four or five times longer than
any other spring that we tested for BMW engines. Use with titanium
retainers, sold each. Fits all M20 engines.
P/N 11341028 (inner and outer set, each) Titanium
Valve Spring Retainers About half the weight and twice as strong as steel. Used in all our Stage 3, 4, and race engines. Weight is 12.5 grams each. For
Korman Dual Valve Springs- M20 P/N 11342003 For
Schrick Racing Valve Springs- M20 P/N 11341030
Korman
BMW Valves M20
engines manufactured before 12/86 have 40 mm intake and 34 mm exhaust
valves. Upgrading to the sizes below offers a nice increase in flow,
provided your cylinder head ports are enlarged to take advantage of the
bigger valves. Swirl polished, profiled, and radiused for
improved flow. 42
mm intake P/N 1134K708895 36
mm exhaust P/N 1134K708896
Pistons
and Connecting Rods High
Compression Pistons In
addition to standard pistons, we offer the following special pistons.
All piston sets include rings, pins and clips. You MUST provide your
bore size when ordering. M20
325i 9.7:1 112508265 M20
2.7i 9.5:1 P/N 112508254 Lightweight
Piston Pins Similar to those used in our racing pistons. Nice addition to any engine job. Ten to twenty percent lighter than stock pins, suitable for full race or street applications. M20 6 Cyl. P/N 1125K712120
Lightened, balanced, peened, sized, rebushed, and alignment checked. About 8% lighter than stock rods. Shipped complete with new rod bolts and nuts. Price is for servicing your rods. M20 325 P/N 11241203 Korman
Lightweight Competition Connecting Rods Designed for full race use, equally suitable for the street. Super strong and light alloy composition reduces the rotating mass of your engine, reduces stress forces at high RPM. About 25% lighter than stock, can be ordered in stock sizes or custom lengths for special applications. M20
6 Cyl. (485 grams) P/N 11241600
Parts
are cleaned and glass peened for superior paint bond. Raised ribs and
BMW logos are reworked to a polished finish. Can be supplied with your
new engine or shipped on an exchange basis. Available in black, red or
blue. M20
Valve Cover P/N LAB11126035 M20
Intake P/N LAB11126200
Heavy
Duty Alternator Bushings These heavy duty polyurethane bushings replace your stock rubber units. The stock rubber bushings collapse over time causing misalignment of the alternator, and premature belt wear or failure. Look and see if your alternator is crooked, then use these improved bushings for a long term solution. Long Bushings (4 required) P/N 12311268433 Heavy
Duty Hard Rubber Motor Mounts Our mounts reduce unwanted engine movement during hard acceleration, braking and cornering. Sold in pairs. E30
325>86 P/N 11810325S
E30 325 87> P/N 11810325A Engine
Oiling Engine
Oiling System Modifications Modification
to the crankshaft and main bearings increase bottom end oil pressure,
prevent oil from pooling in cylinder head at continuous high RPM
operation. Kit includes special main bearings, new oil pump with
sprocket and hardware. You must ship your crankshaft to us for
modification.
M20 6 Cyl. P/N
11411206
These
filters pass Korman requirements for flow, pressure drop, and size of
particles filtered out. Excellent protection for street, autocross or
full race conditions. Filter utilizes a synthetic element which you
simply replace at your service interval. Spin
On Type For
installation to original BMW filter housings. Fits M20. Cast aluminum
housing. P/N 114202526
Remote
Competition Type Filters 1/2"NPT threads, installs as a remote unit. Stainless steel mounting bracket included. P/N 114202500 Replacement
Filter Elements Each
P/N 114202600 6
Pack P/N 114202602 525i, iT 92>M50 Engine
M50 2.5, M52TU 2.5 & 2.8, M52 2.8, S50 3.0, S52 3.2 Building these engines for professional and amateur race series since their introduction gives us unique insight into what makes a reliable, powerful engine. Hours on the dyno and on the track has let us build engines for our customers that have put them in the winner's circle time after time. Even our stock rebuilds benefit from our competition experience. Our engines are hand-assembled in-house to factory tolerances or better. Where applicable, components are updated for improved performance and durability. We prefer OE pistons for best service life, and as with all our engines a torque plate is employed during machining for the best bore possible. Our comprehensive packages include many internal and external components not found in cheaper rebuilds, and we always return your engine ready to install, not stripped down. 2.5 Non-Vanos P/N 110M50001 2.5 Vanos P/N 110M50002 Our engines are priced built on your good core Engine Components Aluminum Thermostat Housing The OE plastic thermostat housings are a common failure point. Over tightening, heat and time lead to eventual cracking and sudden coolant loss. Our aluminum thermostat housing is a direct replacement and eliminates the problem permanently. E36 M3, 328, 325 P/N 1153K722531
525i Camshaft Installation Kit Includes necessary parts for installation of our Roadsport or Clubsport cams in your VANOS 328 or 325. Includes special valve springs, titanium retainers, valve locks, and hardened lower spring plates. P/N 11396450
Schrick Camshafts-525 Non-VANOS Schrick cams represent the newest and most advanced designs for BMW engines. Sophisticated changes in lobe center angles and larger base circles enable reliable utilization of high lift. Their chief quality is their ability to produce a great increase in power across a wide RPM range. Clean idling and strong bottom end torque are combined with superior top end power. They do not require fly-cutting the pistons for additional clearance, fuel injection modification or any additional installation parts. Must be installed in pairs. 256º duration, 10.4mm lift. P/N 11386256
Korman Big Valves Larger valves feature a stepped down stem at the valve head for even better flow. Black nitride coating for long service life and less friction. Fits all 2.5 engines. 34mm intake Valve P/N 1134E36R34 31.5mm exhaust valve P/N 1134E36315
2.5 Liter Engines and Valve Spring Retainers High revs can drive valve stems down into the original retainers, and sooner or later cause the valves to drop through the retainer into the combustion chamber. This can destroy the piston, cylinder head and sometimes the connecting rods and block. BMW has updated the retainers on 97> cars to address this issue. We offer two choices, the hardened BMW steel retainers or the lighter, stronger titanium retainers.
Titanium Valve Spring Retainers About half the weight and twice the strength of steel. Used in all our stage 3, 4 and full race engines. Weight 12.5 grams each. 525 (single valve spring only) P/N 11342325
BMW Hardened Valve Spring Retainers P/N 11341432453
Korman Computer Chips BMW's shipped from the factory are designed to run safely on a wide range of fuels. By optimizing ignition advance and fuel curves for premium fuel (92 octane or higher), significant horsepower and torque increases can be realized. Early E36's have a replaceable "plug in" P.R.O.M. chip which can be shipped to you for installation (please provide your engine control unit number when ordering). Later models incorporating BMW's anti-theft circuitry require you to send us your entire control unit for reprogramming. On all chips, the top speed limiter is raised. Rev limits increased to 7000 RPM for M3 and 325 chips, 7200 RPM for 318.
Custom & Race Computer Chips We have several configurations developed on our dyno for racing and custom applications. Adjustments are made for racing exhaust systems, fully prepped cylinder heads, camshafts, increased displacement, race fuel, etc. allowing you to get the most out of your engine. Call for pricing and details.
535i M30 "Big Six" Engine Stock Rebuild Our stock rebuilds are assembled to BMW specifications by our experienced and dedicated technicians rather than off a mass production assembly line. Korman engines are assembled with meticulous craftsmanship, precise machining, and detailed blueprinting. All of our boring is done with a torque plate for exceptional bore roundness and long engine life. These hand built engines are available at prices comparable to a factory reman units which offer only 12 month/12,000 mile warranties. 3.5 liter fuel injected late (89-93 E34 535) P/N 11056020
Korman Stage 1 3.5L Fuel Injected Engine-Late (89-93 535) Stage 1 porting and polishing, balanced connecting rods, light weight piston pins, increased valve spring pressure, and a performance computer chip increase horsepower from 208 to 222, and torque goes from 223 lb/ft to 237 lb/ft. P/N 11056120
Korman Stage 2 3.5L Fuel Injected Engine-Late (89-93 535) Our Stage 2 for the late 3.5L includes our Stage 2 cylinder head porting and polishing, dual valve springs with chrome alloy retainers, lightened Stage 2 connecting rods, Korman Rocker Arms, and a special computer chip. Horsepower is increased from 208 to 230, and torque climbs from 223 lb/ft to 244 lb/ft. This engine is emissions legal. P/N 11057220 Strokers/Conversions Another way of gaining horsepower and torque without affecting emissions is to increase the displacement of the M30 engine. This option is available with all of our rebuilds, please call us with your needs. Required main components:
Performance Computer Chip
Adjustable
Fuel Pressure Regulator This modified Bosch fuel pressure regulator allows you to adjust the fuel pressure on your 533 or 535. Increased fuel pressures can help compensate for performance modifications (chips, cams, exhaust, intake, etc.) as well as addressing some rough idle and "flat spot" problems. Improves spray patterns on older injectors. P/N 13106020
Camshafts and Valvetrain Components
Schrick's street performance cams all give a strong increase in power across the full rev range while retaining a smooth idle. They do not require cutting for additional piston/valve clearance. They are designed to perform with the BMW original fuel injection systems.
M30 Schrick Camshafts Schrick 284-284º duration, 10.9 mm lift. Smooth idle, no internal engine modifications necessary. Dual valve springs, chrome alloy retainers required. Performance chip strongly suggested. >9/83 P/N 11386282 9/83> P/N 1138628201
Korman K-300 Camshafts These popular reground camshafts feature 300º duration, 9.4 mm of lift. Due to variations in distributor drives, we must have your core in advance for machining. P/N 11316300
Offset Adjustable Cam Gear Resurfacing the cylinder head retards the camshaft timing. Use this gear to advance it back to specification. Machined for 1,3,5 and 7 degrees of offset. Can also be used to fine tune the power band of the engine. M30 11/78> P/N 11318606
Camshaft Installation Kit M30 6 Cyl. Stage 1 includes cast alloy rocker arms, dual valve springs, and chrome alloy retainers. P/N 11396430
Korman Rocker Arms Lightened cast alloy rocker arms, contoured, peened and polished. Radiused to clear valve spring retainers with high lift cams. Sold each. M30 6 Cyl. P/N 1133K256229
Korman Racing Rocker Arms Similar to above, fully polished arm, pads micropolished. M30 6 Cyl. P/N 1133R256229
If you need to turn high revs these steel rocker arms will give the reliability that aluminum can't provide. Proven durable on-track with consistent revs to 9000 and above with no failures. P/N 1133S256229
Aluminum Rocker Arm Locks Designed to eliminate both the early style high tension and late style low tension rockershaft springs. Locks rocker arm into place with less friction loss than the OEM rockershaft springs. Minimizes the chance of broken rocker arms from rockershaft spring deflection. Weight is 20.8 grams each. Sold each. P/N 11341M10M30
High Performance Dual Valve Springs Includes center damper spring sleeve. Long life with revs to 7600 RPM. No cylinder head machining required. Fits all M30 engines. P/N 11341204
Schrick Racing Valve Springs Made to sustain very high spring pressures, very high cam lift, and extended high RPM use. Will maintain original tension four or five times longer than any other spring that we tested for BMW engines. Use with titanium retainers, sold each. P/N 11341028 (inner and outer set, each)
Titanium
Valve Spring Retainers About half the weight and twice as strong as steel. Used in all our Stage 3, 4, and race engines. Weight is 12.5 grams each. For Korman Dual Valve Springs-M30 P/N 11342002 For Schrick Racing Valve Springs-M30 P/N 11341029
Chrome Alloy Steel Valve Spring Retainers Stronger than stock, used in all our Stage 2 engines. Weight is 21.5 grams each. P/N 11342001
Korman BMW Valves Swirl polished, profiled, and radiused for improved flow.46 mm intake P/N 1134K257592 38 mm exhaust P/N 1134K250129
Special BIG Racing Valves-M30 Special 47 mm alloy intake valve (stock is 46 mm). Fits stock valve seat, features dished design with polished surface. P/N 11344140
Lightweight Piston Pins Similar to those used in our racing pistons. Nice addition to any engine job. Ten to twenty percent lighter than stock pins, suitable for full race or street applications. M30 6 Cyl. P/N 1125K712198
Korman Modified Connecting Rods Lightened, balanced, peened, sized, rebushed, and alignment checked. About 8% lighter than stock rods. Shipped complete with new rod bolts and nuts. Sold on an exchange basis. M30 All (each) P/N LAB11241201
Designed for full race use, equally suitable for the street. Super strong and light alloy composition reduces the rotating mass of your engine, reduces stress forces at high RPM. About 25% lighter than stock, can be ordered in stock sizes or custom lengths for special applications. M30 6 Cyl. (550 grams) P/N 11241500picture shows stock rod left, competition rod right
Polished, Krinkle Finished Valve Covers & Intake Manifolds Parts
are cleaned and glass peened for superior paint bond. Raised ribs and BMW
logos are polished to a mirror finish. Krinkle finish is baked on for
eveness and durability. Can be supplied with your new engine or shipped on
an exchange basis. Available in black, red or blue.
Heavy Duty Alternator Bushings These heavy duty polyurethane bushings replace your stock rubber units. The stock rubber bushings collapse over time causing misalignment of the alternator, resulting in a thrown belt. Look and see if your alternator is crooked, then use these improved bushings for a long term solution. Long Bushings (4 required) P/N 12311268433
Engine Oiling
Engine Oiling System Modifications Modification to the crankshaft and main bearings increase bottom end oil pressure, prevent oil from pooling in cylinder head at continuous high RPM operation. Kit includes special main bearings, new oil pump with sprocket and hardware. You must ship your crankshaft to us for modification. M30 6 Cyl. P/N 11411306
Oil Cooler Kits Stacked plate design coolers provide as much as 9 times the surface area as conventional tube type units.
Korman
Remote Oil Cooler Kits Includes cooler, remote filter adapter, remote filter mount, filter, all necessary hoses, clamps and fittings. 3"x11" Oil Cooler Kit P/N 11424002 5.75"x11" Oil Cooler Kit P/N 11424003
Korman Competition Oil Cooler Kit Includes oil cooler, aircraft type aluminum fittings, stainless steel braided #10 hose, remote adapter, remote oil filter mount, filter. 3"x11" Oil Cooler Kit P/N 11424100 5.75"x11" Oil Cooler Kit P/N 11424200
Heavy-Duty
Remote Oil Filter Mount Extra strength for the most demanding situations. Housing machined from billet aluminum, red anodized finish. Includes AN 10 fittings, AN 12 available on request. P/N 1142900004
Oil Thermostat Works with the above oil cooler kits to facilitate quicker engine warm up. P/N 11420111 (for Korman Remote Kits 002 and 003) P/N 11420222 (For Korman Competition Kits, AN 10 fittings)
530i, 540i V8 Engine Performance Computer Chips
*ECU must be shipped to Korman for modification
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Korman Roadsport Suspension Systems Our best selling suspension package is comfortable enough for daily use, yet provides substantially improved handling for winding roads and weekend club events. Kits includes four Bilstein HD shocks, front and rear anti-sway bars with polyurethane bushings, and our Heavy Duty thrust rod bushings.
Korman Clubsport Suspension Systems Our Clubsport Suspension Systems for the E34 step up to Bilstein Sport Valved shocks and also includes 4 sport springs. Sway bars and Heavy Duty thrust rod bushings complete these packages and ensure crisp, precise control under most any circumstance.
Competition Adjustable Anti-Sway Bar End Links Allows for custom tuning of front and rear anti-sway bar pre-load to suit specific track layouts. Light weight aluminum threaded centers connect right and left hand threaded joints for quick adjustments. Front links may be used singly or in pairs. Front Adjustable Link E34 525, 535 '89> P/N 3102847
Heavy-Duty Thrust Rod Bushings The E34 chassis and front end shimmy go hand in hand, especially with the addition of larger wheel and tire packages. This shimmy mimics warped rotors, and is most noticeable under light braking from highway speeds. The most common cause we see in our shop are the weak factory thrust rod bushings. These bushings are mounted at the rear of the strut rod, a diagonal link which helps prevent fore and aft wheel movement. Our hard rubber bushings address this problem as well as improving steering feel and "turn in". Sold in pairs. All E34 P/N 3112567
Upper Decamber Plates A pair of hardened aluminum plates with studs and bolts for easy installation. Increases front negative camber by about 3/4°. Sold in pairs, fits all E34 models. E34 >7/90 P/N 31062057 E34 8/90> P/N 31062059
Strut Braces Strengthens chassis, minimizes strut tower deflection. Polished aluminum finish. E34 525 M20 (89-91) P/N 3131056 E34 525 M50 (91-95) P/N 3131057 E34 535, 530, 540 P/N 3131056
Front Upper Support Bearings Always replace when installing new front springs or shocks. Offset Upper Support Bearing P/N 31331139481 Standard Upper Support Bearing P/N 31331139437
Rear Subframe Camber/Toe Assembly Our eccentrics allow adjustment of rear wheel camber and toe in just a matter of minutes. Enables the restoration of factory specified alignment settings, adjustable for racing. Sold on an exchange basis. P/N 33203567L (camber or toe only, x 2 for both)
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Big Brake Kits
High Performance Rotors Ate
POWER DISC
Front rotor all E34 except 540 P/N 3411P160936
Korman High Performance Brake Rotors Available in either a computer controlled crossdrilled version with the holes chamfered to the wear limit, or in a computer controlled gas slotted version with the gas ports milled to the wear limit. Our rotors are then finish plated with cadmium. While nothing beats the appearance of crossdrilled rotors, we suggest using the gas slotted versions for true high performance and track use due to superior wear rates and brake cooling. Please specify crossdrilled or gas slotted when ordering.
High Performance Brake Pads
Developed as a non-asbestos street alternative. Formulated with metallic fibers and other inorganic substances that yield a high friction level with good resistance to fade and wear. This competition grade compound is completely suitable for normal street use as the friction level is affected very little by temperature.
Hawk High Performance Disc Brake Pads
In our development of the 325 for IMSA Endurance Racing, we tested every brand name racing brake pad we could buy and then had some custom fabricated as nothing "off the shelf" would last. We finally found a custom material that was good enough to win the 24 Hours of Watkins Glen and both the Driver and Manufacturers IMSA Sport Class Endurance Championships. An added bonus is that they stop well under light street conditions, making them completely suitable for street/highway use as well as driving schools and Club Races. Sold on an exchange basis (we need your old backing plates back as cores)
Developed for use in our IMSA E30 M3's. Good enough to win both the drivers and the manufacturers IMSA Sport Class Endurance Championships. This pad material is a non-asbestos graphite/metallic formulation. Unlike some racing materials that work well only when hot, the broad coefficient of friction of these pads also enable them to work well under cool, light braking conditions. They are therefore ideal dual purpose pads for both street and club events.
Other Brake Components
Essential for driving schools and highly recommended for all high performance driving. Provides stronger pedal, improved modulation under hard brake usage. Eliminates expansion associated with rubber lines. Kit includes a full set of 6 lines. All E34 5 series P/N 34321056
A
non-silicone high performance dot 4 brake fluid designed for the extreme
demands of motor racing, yet perfectly suited for street applications. Sold
in 1 liter cans. P/N SUPER BLUE
(blue fluid) (Type
200 is a yellow version of Super Blue)
P/N TYPE200
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The K & N Filtercharger is unsurpassed in filtration protection, while maintaining an air flow greater that the OEM paper filter. Constructed of a pleated special cotton fabric with aluminum screen mesh and wide rubber seals, it comes pre-oiled with a one million mile warranty. When dirty, simply clean, re-oil and reinstall.
K&N Accessories K&N Oil, 8 oz.P/N 13720008; K&N Cleaner, 32 oz.P/N 13720032
Flowtech Intake Systems-E34 530/540 & 535 Completely eliminates stock air box. New 9" cone element K&N filter is supplied with an aluminum heat shield to guard against hot air. Mounts using existing metal tabs and hardware. 530i P/N 1371V8530 540i P/N 1371V8540 535i P/N 13711735E34
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Remus Free Flow Exhaust Systems These high quality Austrian made performance exhaust systems for your BMW offer sporty sound and a nice decrease in exhaust back pressure without being too loud. All Remus systems are dyno tuned for best power and feature stainless steel inner baffles for long life. Easy installation using stock fittings and mounting points. 3 year warranty.
Exhaust Manifold Porting A careful porting and polishing of the exhaust manifolds to match the diameter of the exhaust manifold gaskets. E34 525, 535 P/N LAB18213006 E34 530, 540 P/N LAB 18213004 (2 required)
Ceramic Thermal Barrier Coating Aerospace coating on both the inside and outside of the exhaust manifolds results in increased gas velocity, reduced under hood temperatures (20-30%), and combustion chamber stabilization. Additionally, rust and corrosion are eliminated by this coating which has the appearance of polished aluminum. E34 525, 535 P/N 182110016 E34 530, 540 P/N 182110014 (2 required)
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Korman Adjustable Short Shift Kit Let's
you select the shifter throw that suits your needs
All E34 P/N 25250001
Lightweight Steel Flywheels Precision machined and balanced steel flywheel. 35% lighter for reduced inertia and more rapid acceleration. Sold on an exchange basis. 535i P/N 11220006 525i M20 89-91 P/N 11220325
Aluminum Flywheels-525i M20 (89-91) Precision machined on the latest numerical control lathes to ensure highest possible accuracy. Constructed of high strength, heat-treated aluminum, with a steel friction surface retained by aircraft structural screws. The insert is stress relieved, blanchard ground, precision drilled, countersunk, and heat-treated. It is far superior to spray-on type friction surfaces and can be replaced when worn. Kit includes aluminum flywheel, flywheel bolts and anti-galling plate. Total flywheel weight is 8.9 lb. 525i (228mm) P/N 11121880K
Flywheel Bolts (always replace flywheel bolts when replacing the flywheel) 525i P/N 11220616143
Aluminum Flywheels-525i M50 (92>) Weigh anchor! The factory dual mass flywheel weighs 27.6 lbs. The Korman Aluminum Flywheel weighs just 10.4 lbs. This reduction in rotating mass (17.2 lbs.) allows your engine to accelerate faster at all Rpm's. Our flywheel is precision machined on the latest numerical control lathes to ensure highest possible accuracy. Constructed of high strength heat treated aluminum with a replaceable steel friction surface. Kit includes aluminum flywheel, anti-galling plate, and special flywheel bolts. Compatible with the original factory clutch set. E34 525i M50 (92>) (228 mm) P/N 11121900K Clutch Components
Stock Clutch Kits All new (no reman) kits include stock pressure plate, disc and release bearing.
Korman
Manual Gearbox Rebuild
We rebuild your gearbox using only BMW original parts. Includes new bearings, synchronizers, seals, gaskets and labor. P/N 232316XX
Differentials
Korman Standard Differential Rebuild Differentials with normal wear don't usually require the replacement of the ring and pinion gears. Our standard rebuild includes complete disassembly, through cleaning, close inspection of all parts, replacement of all bearings, seals gaskets, crush sleeve and lock ring. Includes meticulous attention to correct gear lash, gear contact, precise pre-load of bearings and exact torque specifications. We expect our rebuilds to last well over 100,000 miles. Note: UPS can pick up and deliver your differential at your door! E34 525i, 535i, 530i P/N 33126036
Korman 75% Limited Slip Differential Conversion If you race, autocross, rally, do BMW driving schools, or otherwise tend to push your car to the limit, let us convert your 25% limited slip differential to 75% limited slip. Wheel spin is reduced or eliminated, improving track times significantly. Additionally, the reduction in internal slippage lowers lubricant temperatures, helping prolong bearing life. The conversion requires special machining at our facility, making it necessary for you to ship your differential to us for modification. 75% Limited Slip Conversion P/N 33126375
Optional
Ratio Differential Gear Sets "My first BMW, a 1964 1800 TISA four door sedan regularly beat the performance sport cars of its day in autocrosses: E-Jaguars, Lotus Elans, Corvettes, MG Twin Cams, Porsche Super 90's, and more than a few 911's! Along with very minor engine changes, a good suspension package, wider wheels and tires, and a close ratio gearbox, my most effective "speed secret" was the change to a 4.75 gear set!" Ray Korman
Korman Suggested Differential Gearing
Call us for recommendations, pricing and more information on upgrading your differential.
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© Korman Autoworks, Inc. 2629 Randleman Rd. Greensboro, NC USA 27406 |
Korman
Stock Rebuilds
Steel
Racing Rocker Arms
Ferodo
Performance Brake Pads
Korman
Endurance Brake Pads
Stainless
Steel/Teflon Brake Lines
Super
Blue Racing Brake Fluid
K
& N Air Filters
We
sell only quality SACHS clutch components. Heavy duty pressure plates
feature increased clamping force for better performance with high
horsepower engines, bigger tires, etc. The heavy duty light weight
pressure plates feature the same increase in clamping force but the center
plate, normally cast iron, is replaced with lightweight aluminum for even
better performance. Heavy Duty Sport Discs feature a performance grade
friction surface which is both riveted and bonded for greater
strength.
