M30 Engine Components

2.5, 2.8, 3.0 Liter

Camshafts and Valvetrain Components

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.

M30 Schrick Camshafts

Schrick 282-282º duration, 10.6 mm lift. Smooth idle, no internal engine modifications necessary. Dual valve springs, chrome alloy retainers required. Performance chip strongly suggested.

>9/83 P/N 11316282

Korman K-300 Camshafts

These popular reground camshafts feature 300º duration, 9.4 mm of lift. Capable of 240+ HP in carbureted M30 engines.

>1984 P/N 11316300

Core Charge P/N 1131CORE

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 > 10/78 P/N 11316006

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. Will fit over 79> small valve seals. Must update guides and seals on older heads. No cylinder head machining required. Fits all M30 and M20 engines. M20 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 M10 and 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-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

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.

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

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.

M30 9.1:1 P/N 112508258

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

Heavy Duty Alternator Bushings

Replace your soft stock rubber bushings with these heavy-duty units.

Long P/N 12311268432 (2) required

Short P/N 12311268433 (2) required

© Korman Autoworks, Inc. 1997, 1998