E3E9Engines

M30 "Big Six" Complete Engines

2.5, 2.8, 3.0 Liter

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.

2.8/3.0 liter carbureted P/N 11006000

2.8/3.0 liter fuel injected P/N 11006010

Stage 1 Engines

2 year/24,000 mile warranty

Korman Stage 1 Fuel Injected Engine-2.8/3.0 Liter

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.

2.8/3.0 liter P/N 11006110

Stage 1 Engine-Carbureted-2.8/3.0 Liter

We utilize a moderate increase in compression ratio, special valve and valve seat work, a special distributor, sport coil and Stahl headers to obtain maximum efficiency and performance from the stock camshaft. Horsepower is up from 170-180 (depending on model) to 205 HP. I you have had some of the usual headaches with the Solex (euro 5,6,7 series) or Zenith (2800, 3.0, Bavaria, CS models) you may with to fit our Weber 32/36 downdraft conversion. The package includes all necessary linkage, hoses, fittings, and air cleaners. Single carb Solex models will require a different intake manifold and additional linkage pieces. Please specify year and model.

Stage 1 Carbureted (original carb) P/N 11006100

With Weber 32/36 DGAV Conversion P/N 11006114

With Weber 32/36 DGAV Conversion (with manifolds and special linkage) P/N 11006115

Stage 2 Engines

Stage 2 Engine-Fuel Injected-2.8/3.0

These engines include the Schrick 284 camshaft for power ratings of 235-250 horsepower depending on model. Stage 2 porting and polishing, Korman Rocker Arms, dual valve springs, chrome alloy valve spring retainers, oiling system modifications and stage 2 connecting rods also included.

~Not emissions legal~

2.8/3.0 liters P/N 1106220

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 240 HP (3.0 liter), 250 HP (3.3 liter), and 260 HP (3.5 liter).

~Not emissions legal~

2.8/3.0 liter P/N 11006200

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:

2.5/2.8 to 3.3-block and crankshaft
3.0 to 3.3-crankshaft
3.3 to 3.5-block and crankshaft
3.5 to 3.8-crankshaft and conversion parts

All Korman engines are priced built on your good core