2002 engines and components

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.

New emissions standards may lead you to believe that traditional high performance BMW engines have been legislated away. Not so! Excellent power and acceleration gains can be realized within these constraints by improving flow and reducing the rotating and reciprocating mass of engine components. Our Clean Air Engines are fast, reliable, and clean to help you get the most out of your BMW.

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 much 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. Carbureted models include a Bosch Sport Coil, High Performance Ignition Wires, and Mechanical Advance Distributor. 10-15% horsepower increase according to model.

Stage 1 Clean Air Engine with Weber Downdraft Carburetor Conversion P/N 110W2100CA

Stage 1 Clean Air Engine-Tii P/N110T20CA

Stage 2 High Performance Clean Air Engines

These engines receive our Stage 2 competition-type engine treatment for maximum performance while still meeting emissions standards. Porting and polishing are more extensive than our Stage 1, valves and seats are re-cut for improved flow, and all valves are swirl polished. For increased high RPM strength we add dual valve springs, titanium valve spring retainers, and our Korman Rocker Arms. Instead of reworked stock rods, we install our light weight chrome steel alloy connecting rods for a very substantial reduction in reciprocating weight. Lightweight piston pins are included, and the steel flywheel is lightened or replaced with our aluminum flywheel. We recommend our light weight heavy duty Sachs Sport Pressure Plate and matching disc as appropriate add-on items. We include our competition type oil system modifications for improved engine lubrication. Carbureted models receive a Bosch High Performance Coil and Mechanical Advance Distributor. Thermal barrier exhaust coating is also included.

Stage 2 Clean Air Engine-Tii- P/N 1102230CA

A moderate increase in compression ratio, special valve work, mechanical advance distributor, Bosch Sport Coil, and Korman-Stahl headers combine to extract about 12% increase in power over the stock engine. The stock cam is used resulting in a very fuel efficient, quick engine. Expect about 112HP with the Weber 32/36 conversion.

Stage 1 Engine P/N 11002100

Stage 1 Engine with Weber 32/36 Conversion P/N 11002114

Stage 1 Tii Engine (140 HP) P/N 110T2110

Korman Competition Engines

These engines are not designed or intended for use on public highways. They do not meet requirements of the Clean Air Act of 1991 or of the California Air Resources Board. They are offered for track use only.

This is our most popular M10 performance engine. Lots of torque, smooth idle, rapid acceleration to 7000 RPM. This is a solid 150HP engine, yet when driven with a light foot can get up to 30 mpg. This engine utilizes dual Weber 40 DCOE's with Korman's 1 piece balance port intake manifold, Korman K-300 Camshaft, Bosch Mechanical Advance Distributor, Korman-Stahl Header, Dual Valve Springs, Chrome Alloy valve spring retainers, and Korman Rocker Arms. Connecting rods are lightened and balanced, cylinder heads are fully ported and polished. The engine is completely balanced and blueprinted. All boring is done with a torque plate for best cylinder roundness. Substituting the Schrick 292 cam yields an additional 10 horsepower. P/N 11002200

Stage 2 Competition Engine with Weber 32/36 Carburetor

Same as above with the economy of utilizing the two barrel downdraft carb on the stock (73-76) manifold. Dyno tests at 140HP.

Stage 2 Competition Engine-Tii 160 HP utilizing the original Kugelfischer Injection.

P/N 11002230

Our hot autocross/rally engine. This is a light competition engine built for power. Don't expect 150,000 miles at 7500RPM, but it is designed to operate at that engine speed. This 170 HP engine includes the Schrick 316 cam, two twin 45 DCOE Webers, lightweight connecting rods, high compression pistons, titanium valve spring retainers, racing headers, etc. Blueprinted and balanced to competition specifications.

This capacity is available in our otherwise stock spec motor, Stage 1, 2, 3, or Full Race Spec Motor.

The special crankshaft requires a different timing chain/oil pump/crank sprocket, a different front vibration damper/pulley, improved front hub assembly, custom light weight forged pistons with light weight pins, custom length competition connecting rods, special machining to the front timing cover, and machining of the block for clearance of the longer stroke assembly.

We also recommend using larger primary size Stahl headers at an additional cost of $140.00 over our standard 2002 header. The ceramic thermal barrier coating adds another $205.00.

Weber carb jetting and choke size must be changed to handle the increased power. Our Webers are sold with jets and chokes fitted to your engine specs so there is no additional cost for this change.

It is characteristic of the dynamics of increasing stroke that there will be frictional and inertia losses at high rpm resulting in a top end increase of only 5-7%, but producing and impressive 20% or more increase in bottom end torque. The great advantage here is a very substantial increase in acceleration without having to work the engine hard with high revs. Smooth, strong response is coupled with increased durability.

Dual 45 DCOE's, Schrick 304 Cam, custom pistons and rods, Korman cylinder head, Korman-Stahl header, custom exhaust.

2002 2.2 liter street engine,292 cam, programmable fuel injection: Dyno tested at 170hp.

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.

P/N	Duration	Lift	Application
11314284	284°	9.5mm	M10>9/80
11314292	292°	10.0mm
11314304	304°	10.7mm
11314316	316°	11.1mm
11314328	328°	12.0mm
11314336	336°	12.5mm
Korman Reground Cams
11314300	300°	9.4mm	M10>9/80
11314330	330°	11.1mm	M10>9/80

This is Schrick’s high torque street performance cam. It gives a strong bottom end response and continues making steady power through the full rev range. It do not require cutting for piston-valve clearance.

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 side draft or downdraft carburetion.

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.

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.

For fully prepared race motors only. Many engine modifications and high compression ratio required. The 336 is for those who want to win! The 328 has a wider power band and makes a good pro rally or endurance engine type cam. Both are asymmetrical, the intake lobes have more duration and lift than the exhaust lobes. You will need our offset adjustable cam gear to set the cam timing. We won an SCCA GT2 Campionship with the 336 cam and 50 DCOE Webers making 230 HP. There is no stronger cam made anywhere for the M10 motor.

Our reground cams have proven to be quick and reliable for over 150,000 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.

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.

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. P/N 11314330

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

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

Resurfacing the cylinder head retards camshaft timing. Use this gear to advance it back to original specs.

Or to fine tune the power band of the engine Machined for 1,3,5 and 7 degrees of offset.

>11/78 (for double row chain) P/N 11310006 Single row chain gear also available by special order

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

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. Machined from billet aluminum with a red anodized finish. Wt 20.8 grams. One lock per rocker arm. For M10 4 Cyl Sold each

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.

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.

About half the weight and twice as strong as steel. Used in our Stage 3, 4, and race engines. Weight is 12.5 grams each.

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.

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

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

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 strongly recommend Mahle pistons for street/highway use for their greater longevity and very low oil consumption. The light weight forged pistons are for sport use and not meant for every day commuting. All piston sets are sold complete with rings, piston pins, and clips.

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 up to 13.5:1

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

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

Designed for full race use, equally suitable for the street. Super strong and light 4340 chrome moly steel alloy composition reduces the reciprocating mass in 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.

BMW uses stretch bolts for clamping the cylinder head to the block. But for modified high performance engines, stronger fasteners may be needed We recommend these 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.

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

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.

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.

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.

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 bright 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

These heavy duty polyurethane bushings replace your stock rubber parts. 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.

No longer available from BMW, we have machined and hard anodized this gear from solid billet, not cast. Restores proper pump timing, installs same as original part.

Korman Special Oil Pan way flapper valve controls surging in the sump, maintains deeper oil level around pick up to preclude sucking air in hard turns, hard braking, hard acceleration. This proven design saves rod bearings. Can be used alone or with Formula 2 style windage tray, below. Sold on an exchange basis. P/N 11130002EXC CORE 11132CORE

Designed for racing, we have also used many of these pans on hot street/autocross cars. Enlarged sump increases oil capacity by 2 liters. Extensively baffled, three one way flapper valves provide unmatched oil control. Can be used alone or with Formula 2 style windage tray, below. Fits 1600/2002.

Heidegger AG F2 style windage trays with three stainless steel scraper blades. The blades strip oil from the crank and rods and direct turbulence and splashing oil away from moving parts reducing drag and foaming. P/N 11130000

NOTE: Stock connecting rods will not clear the F2 Windage Scrapper Blade Assembly. You must use our Korman Modified, Competition, or Special Alloy Connecting Rods. Alternately, you can cut the cast balancing mass from the bottom of your rods and have them re-balanced. Oil dipstick hole must be added.

Modification to the crankshaft and main bearings increase bottom end oil pressure, prevent oil from pooling in the 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.

Our stacked plate design coolers provide as much as 9 times the surface area as conventional tube type units.

Includes cooler, remote filter adapter, remote filter mount, filter, all necessary hoses, clamps and fittings.

Includes oil cooler, aircraft type aluminum fittings, stainless steel braided #10 hose, remote adapter, remote oil filter mount, filter.

The commonly used cast aluminum adapters are known to split open (usually when the engine is fired up cold). Our remote adaptor is machined from solid aluminum billet and is tapped for aeroquip type oil line fittings (1/2" NPT) and also tapped for both oil pressure and oil temperature sending units. AN10 fittings included (2). AN 12 available on request. Fits all M10 engines.

Replaces original BMW filter mount, bolts directly to engine block. With ½” NPT threads to accept hose or AN fittings. As used in our standard oil cooler kits.

Same as above but made from solid billet aluminum instead of cast. Includes AN10 male fittings (AN 12 available on request). Drilled and tapped for oil pressure sender and oil temp sender.

In extensive testing, these filters trapped smaller particles than any other tested, and their high flow design required less horsepower to pump oil through the filter. Most filters caused a 5-6 psi pressure drop, we measured only 1 psi drop on these. The strong aluminum canister contains a replaceable filter element.

For installation to original BMW filter housings. Fits 1600, 2002. Cast aluminum housing. P/N 114202526

1/2"NPT threads, installs as a remote unit. Machined solid billet aluminum construction, replaceable filter element. Stainless steel mounting bracket included.

Required by many sanctioning bodies to collect vented fluids before they reach the track surface. Can be used for crankcase breather, coolant overflow, transmission or differential.

Aluminum 1 quart housing w/breather filter, drain and mount filter and mount P/N 114223030

Similar to European Ti and U.S. model Tii distributors. 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.

Replaces troublesome points with infrared trigger unit. Greatly reduces dwell variation and erratic timing. Very reliable. Fits all models >9/79. P/N 0231XR700

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

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

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.

7 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!

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!

Cylinder Head	Compression Ratio	P/N
1600Ti	8.5:1	112508185
E12	9.5:1	112508202

Korman M10 Engines