E24 633/635 Complete Engines
3.3 & 3.5 Liter
See related information under Rebuilding: Engines and Turbos
Korman offers 4 basic rebuilding configurations for the M30 engine:
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 and honing 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. Engine Plus Parts Included
3.3 liter fuel injected P/N 11033010
3.5 liter fuel injected P/N 11056010
1988/89 635csi P/N 11056020
Stage 1 Engines
2 year/24,000 mile warranty
Korman Stage 1 3.3L Fuel Injected Engine
Our Stage 1 rebuild will provide a moderate increase in power through the use of our proven performance techniques. Special valve and valve seat work, increased compression, Korman-Stahl Headers and Stage 1 cylinder head porting will net a gain of 20-25 HP depending on model. Performance computer chip suggested, not required. Engine Plus Parts Included
3.3 liter P/N 11033110
Korman Stage 1 Fuel Injected Engine (85-88 635)
These engines feature increased compression, Stage 1 cylinder head porting and polishing, increased valve spring pressure and a special computer chip to take full advantage of the engine's potential. Horsepower is increased from 182 to 215, and torque climbs from 214 lb/ft to 230 lb/ft. Engine Plus Parts Included
P/N 11056110
Korman Stage 1 3.5L Fuel Injected Engine-Late (88-89 635csi)
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
2 year/24,000 mile warranty
Korman Stage 2 Fuel Injected Engine 85-87 635
These engines feature increased compression, Stage 2 cylinder head porting and polishing, dual valve springs with chrome alloy retainers, lightened Stage 2 connecting rods, BIG intake valves, Korman Rocker Arms, and a special computer chip. Horsepower is increased from 182 to 230, and torque climbs from 214 lb/ft to 244 lb/ft. This engine is emissions legal and as smooth as the original. Engine Plus Parts Included
P/N 11056220
Korman Stage 2 3.5L Fuel Injected Engine-Late (88-89 635csi)
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
Strokers/Conversions
2 year/24,000 mile warranty
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:
All Korman engines are priced built on your good core
© Korman Autoworks, Inc. 1998