E34 535 M30 Engines

Performance Computer Chips

Korman offers 4 basic rebuilding configurations for the M30 engine:

• Stock
• Stage 1
• Stage 2
• Stroker Engines

All the listed engine packages are 50 State emissions legal unless otherwise noted

Stock Rebuilds

2 year/24,000 mile warranty

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.

3.5 liter fuel injected late (89-93 E34 535) P/N 11056020

Stage 1 Engines

2 year/24,000 mile warranty

Korman Stage 1 3.5L Fuel Injected Engine-Late (89-93 535)

Stage 1 porting and polishing, balanced connecting rods, light weight piston pins, increased valve spring pressure, and a performance computer chip increase horsepower from 208 to 222, and torque goes from 223 lb/ft to 237 lb/ft.

P/N 11056120

Stage 2 Engines

Korman Stage 2 3.5L Fuel Injected Engine-Late (89-93 535)

Our Stage 2 for the late 3.5L includes our Stage 2 cylinder head porting and polishing, dual valve springs with chrome alloy retainers, lightened Stage 2 connecting rods, Korman Rocker Arms, and a special computer chip. Horsepower is increased from 208 to 230, and torque climbs from 223 lb/ft to 244 lb/ft. This engine is emissions legal.

P/N 11057220

Stage 2 Engine-Carbureted

Our most popular performance rebuild for carbureted M30 engines. Produces 250 smooth, reliable horsepower (3.5 liters).

Parts Include:

• Triple Weber 40 DCOE carburetor kit with Korman 1 piece intake manifold
• Korman K-300 Camshaft
• Mahle High Compression Pistons
• Korman Rocker Arms
• Stahl Headers
• Performance Distributor (where applicable)
• Bosch Sport Coil

These engines also receive our Stage 2 cylinder head porting and polishing, Stage 2 connecting rods, and engine oiling system modifications. Substituting the Schrick 284 cam yields 260+ HP (3.5 liter).

~Not emissions legal~

3.5 liter P/N 11056200

Strokers/Conversions

Another way of gaining horsepower and torque without affecting emissions is to increase the displacement of the M30 engine. This option is available with all of our rebuilds, please call us with your needs.

Required main components:

• 3.5 to 3.8-crankshaft and conversion parts

All Korman engines are priced built on your good core

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 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 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. 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

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

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

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 evenness 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

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. 1998