2002 Engine Components

Camshafts and Valvetrain

Schrick Camshafts

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.

Performance camshafts are sold for off road use only

Schrick 284 Cam For 4 Cylinder Engines

These are Schrick’s high torque street performance cams. They give a strong bottom end response and continue making steady power through the full rev range. They do not require cutting for piston-valve clearance.

Schrick 292 Cam for 4 Cylinder Engines

Our favorite all around performance cam. A strong step up from the 284. With our competition Stage 2 modifications, it will produce about 160 H.P. It does not require cutting for piston to valve clearance. Works with sidedraft or downdraft carburetion.

Schrick 304 Cam for 4 Cylinder Engines

Considerably more power at top end than the 292 cam, these are the strongest practical autocross, rally, driving school type cams. These are more sophisticated cams and obtain some of their extra power from more aggressive angles between the lobes. Additional piston/valve clearance must be cut. Use with 40 or 45 mm side draft carbs. The use of our offset cam gear listed below is highly recommended. This cam uses a standard journal diameter. A small groove must be milled by hand into the center bore.

Schrick 316 Cam for 4 Cylinder Engines

A semi-race cam for club competition on-track events. Nearly full racing performance but without sacrificing valve train reliability and life. Use with 45 DCOE Webers and large diameter headers. The big lobes require boring the cam journals in the cylinder head. (Korman can provide this service for you) This cam provides oil directly, the cam oiling tube is not needed.  Additional piston/valve clearance must be cut.

GTC 336/328 Racing Camshaft

Full race profile, available by special order. Installation should be attempted by experienced engine builder only.

Korman Reground Camshafts

Our reground cams have proven to be quick and reliable for over 100,000 miles. We use only moderate profiles to avoid the steep ramps and greater wear associated with more radical designs. They are machined on precision computer driven cam lathes, hardened, heat treated, and coated. Reasonably priced, sold on an exchange basis.

Korman K300 Camshaft For 4 Cylinder Engines

As used in our Stage 2 engine. Idles smoothly, will pull strongly through 7200 rpm. Capable of up to 150 H.P. in four cylinder engines.

Korman K330 Camshaft For 4 Cylinder Engines

Our strongest re-ground cam. Idles well but with definite cam lope. Good through 7400 rpm. Capable of 170 H.P. in four cylinder two liter engines. 330-degree duration, 11.1 mm valve lift. Use with hardened lash caps.

Camshaft Installation Kits

• M10 4 Cyl. Stage 1

Includes cast alloy rocker arms, dual valve springs, and chrome alloy retainers. P/N 11394400

• M10 4 Cyl. Stage 2

Same as above but includes Korman Rocker Arms. P/N 11394401

• M10 4 Cyl. Stage 2 Competition

Korman Racing Rockers, Titanium valve spring retainers, dual valve springs. P/N 11394402

Valve Train

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.

>11/78 (double row chain) P/N 11310006 (single row also available)

Korman Rocker Arms

Lightened cast alloy rocker arms, contoured, peened and polished. Radiused to clear valve spring retainers with high lift cams. Sold each.

M10 4 Cyl. P/N 1133K256229

Korman Racing Rocker Arms

Similar to above, fully polished arm, pads micropolished.

M10 4 Cyl. P/N 1133R256229

Korman Rocker Arm Lock

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. Minimizes the chance of broken rocker arms from rockershaft spring deflection. Constructed of billet aluminum with a red anodized finish. Weight 20.8 grams. Requires 1 rocker arm lock per rocker arm. Fits M10 4 Cylinder engines.

 P/N 11341M10M30

Valve Springs & Retainers

High Performance Dual Valve Springs

Includes center damper spring sleeve. Long life with revs to 7600 RPM. Will fit over 79> small valve seals. Must update guides and seals on older heads. No cylinder head machining required.

P/N 11341204

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.

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-M10 P/N 11342002

For Schrick Racing Valve Springs 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

Valves

Korman BMW Valves

Swirl polished, profiled, and radiused for improved flow.

• 46 mm intake P/N 1134K254625
• 38 mm exhaust P/N 1134K251063

Korman Stainless Steel BIG Valves

47mm intake and 39mm exhaust valves profiled for max flow of durable stainless steel. For street or racing.  Get the best out of your motor.

• 47mm intake  P/N  1134K662
• 39mm exhaust P/N  1134K664

Titanium Racing Valves

Forty percent lighter than steel. Permits very high rpm on high lift cams with moderate spring pressures. Must be used with special valve guides, retainers, and locks. Valves are machined from certified bar stock and are much more reliable than forged titanium. Requires larger valve seats and extensive porting and polishing.

Cutting Ring/Knife Edge Cylinder Head Gasket

Special combustion chamber sealing rings formed into the head gasket give an extra measure of insurance against leaks. Used in all our Stage 1, 2, and 3 engines.

P/N 1112S265420

Pistons

High Compression Pistons

In addition to all standard BMW pistons, we offer the following special pistons. All pistons except the forged racing pistons are manufactured in Germany by Mahle. Mahle is the manufacturer of BMW original equipment pistons. We most strongly advise against forged racing type pistons for street use unless you are prepared for the higher oil consumption that is inherent in their design. All piston sets are sold complete with rings, piston pins, and clips.

Korman BMW Racing Pistons

Our current piston dome shape is the result of years of dyno testing and successful racing. This piston makes the most power with the least tendency for detonation. Pistons come with lightweight alloy pins and clips. Requires extensive combustion chamber modification. Compression ratios to 13.5:1 are obtainable. Forged for light weight and strength. Call with your application.

Light Weight Piston Pins

Similar to those used in our racing pistons, these lightweight, very strong piston pins are machined to fit stock pistons. They are used in our Stage 2 and 3 special engines and enable the engine to accelerate more rapidly while reducing the dynamic load on the crankshaft and connecting rods. 10 to 20% lighter that stock varying with engine type. Suitable for full race or street application, a nice addition to any engine job. Sold each.

P/N 1125K712198

Connecting Rods

Korman Modified Connecting Rods

Lightened, balanced, peened, sized, and alignment checked. About 8% lighter than stock rods.  Sold on an exchange basis.

P/N LAB 11241201

 Korman Lightweight Competition Connecting Rods

Designed for full race use, equally suitable for the street. Super strong and light 4340 chrome moly steel 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.

M10 4 Cyl. P/N 11241500

Aerospace Quality Hardware

BMW uses S-T-R-E-T-C-H bolts for clamping the cylinder head to the block. This is convenient for automated assembly at the factory but not the best answer for distributing load evenly, strongly, and preventing head gasket leakage. With many of the later engines going up in compression rates, and down in head bolt size, 12mm to 10mm, head gasket problems have become more prevalent. For modified high performance engines, stronger bolts are even more essential.

 We recommend our aerospace quality head studs instead of stretch bolts. They have a guaranteed tensile strength of 190,000 PSI and can be used over and over. Stretch bolts must be replaced, they cannot be re-used. Our kits include precision ground hardened washers and 12 point aircraft nuts to distribute the load evenly. This helps to keep the cylinders more round, improving piston ring seal, compression, and power.

 We also have replacement stud kits for the s-t-r-e-t-c-h bolts used for the main bearing caps.

Competition Crankshaft Pulley

Smaller diameter reduces rpm of water pump and alternator. Prevents water flow cavitation problems, lessens alternator wear, reduces horsepower losses.

Special Steel Crankshaft Pulley: 2002

For racing or street. Same diameter as stock. Replaces stock cast iron pulley which tends to crack on performance engines. Not for use with air conditioning or with air pump. Marked at TDC.

P/N 11231253595 

Three Row Sport Radiator

The original radiator had two rows of tubes set directly in front of each other. Our special cores are thicker, and have three rows of tubes offset for better cooling. We have customers using these in deep southern states with very modified engines plus air conditioning and this radiator gives them cooling capacity in reserve. Sold on an exchange basis.

P/N 171112002 

Heavy-Duty Engine/Transmission Mount Kit

The rubber engine and transmission mounts of the 2002 and 1600 allow excessive engine movement under sport driving conditions, and sometimes break. Our kit includes stronger heavy-duty rubber mounts for the engine, both left and right sides, one transmission mount, and a modified right side steel-mounting bracket.

 P/N 11810002

Ignition

Bosch Mechanical Advance Distributor-M10

Similar to European Ti and U.S. model Tii distributors. Specifically designed to provide a high performance ignition curve to BMW 4 cyl. single cam engines. We have tested others but found none to compare with the quality construction and performance of the Bosch distributor. Will improve acceleration and fuel economy. Expect an 8-10% acceleration improvement. Fits all models >9/79.

P/N 0231188002R

Electronic Points Conversion-M10

Replaces troublesome points with infrared trigger unit. Greatly reduces dwell variation and erratic timing. Fits all models >9/79.

P/N 0231XR700

Bosch High Performance Points

These points have a stronger spring to prevent point bounce at high RPM's. Necessary for revs over 6200. Fits the "002" mechanical distributor.

P/N 1201011

Bosch Ignition Components

Korman stocks the full line of quality Bosch replacement ignition parts (points, caps, rotors, condensors, etc.) Don't settle for less when tuning up your 2002!

Bosch High Performance Ignition Coils

The quick, easy way to upgrade your standard ignition system. Rugged, reliable, and easy to install. Substantial improvement in heavy load or high RPM conditions. Can not be used with pointless ignition system. 12 volt.

P/N BC12 (for systems without external ballast resistor)

P/N RC18 (for systems with 1.4 to 1.8 ohm external ballast resistor)

Lifetime Warranty Bosch Ignition Wire Sets

8 mm high temperature silicone ignition wires offer excellent performance, value and durability. We use these wire sets on all of our engines with excellent results. The last set of plug wires you'll ever buy!

P/N  12121360603

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. Can be supplied with your new engine or shipped on an exchange basis. Available in black or red.

• M10 4 Cyl. Valve Cover P/N LAB11124000

• M10 2.0 L Intake Manifold P/N LAB 11124200

• Dual Weber Manifold P/N LAB 11124100

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. Fits all E21's.

Short Bushings (2 required) P/N 12311268432

Long Bushings (2 required) P/N 12311268433

Tii Kugelfisher Drive Gear

NLA from BMW, we have reproduced this gear to exacting standards.  Restores proper pump timing, installs as original unit.  

P/N  13521261790

Rebuilding it yourself?

Korman stocks a wide range of OEM replacement parts, and we can also do machine work on an as-needed basis. Call us with your needs!

© Korman Autoworks, Inc. 1997, 1998