E28 M30 "Big Six" Engine Components

3.3 & 3.5 Liter

Performance Computer Chips

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

Performance camshafts are not emissions legal. Sold for off-road use only.

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 Kits

• M30 6 Cyl. Stage 1

Includes cast alloy rocker arms, dual valve springs, and chrome alloy retainers. P/N 11396430

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.

M30 6 Cyl. P/N 1133K256229

Korman Racing Rocker Arms

Similar to above, fully polished arm, pads micropolished.

M30 6 Cyl. P/N 1133R256229

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.

Alpina Valves-M30

Special alloy, polished dished design.

• 47 mm intake P/N 11341140

• 39 mm exhaust P/N 11341144

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

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.

M30 6 Cyl. (550 grams) P/N 11241500

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.

• M30 Valve Cover P/N LAB11126035

• M30 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.

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

Remote Adaptor Block-Off Plate

As included in our kits above.  

P/N  114205476

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)

© Korman Autoworks, Inc. 1997, 1998