528e Engine Components

Korman Computer Chips

Adjustable Fuel Pressure Regulator

This modified Bosch fuel pressure regulator allows you to adjust the fuel pressure on your 528e. 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

Performance Camshafts

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 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

Camshaft Installation Kits

M20 6 Cyl. Stage 2

Includes cast alloy rocker arms, dual valve springs, titanium valve spring retainers.

P/N 11396420 (may substitute Korman Rocker Arms or Racing Rocker arms at additional cost) 

Valvetrain 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. Will fit over 79> small valve seals. Must update guides and seals on older heads. No cylinder head machining required. Fits all M20 engines. Requires use of our titanium valve spring retainers, below.

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. 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

Note: 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.

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 eta 10.2:1 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

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.

M20 All (each) P/N LAB11241201

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 

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.

• 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, resulting in a thrown belt. Look and see if your alternator is crooked, then use these improved bushings for a long term solution.

528e 4/83>88 (4)long bushings P/N 12311268433

528e 82-3/83 (2) short bushings P/N 12311268432 and (2) long bushings 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.

M20 6 Cyl. P/N 11411206

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)

High Performance Canton Mecca Oil Filters

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 Filters

For installation to original BMW filter housings. Cast aluminum housing.

All M20 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

© Korman Autoworks, Inc. 1997, 1998