Z3 Engine Improvements

OBD II Upgrade for M Roadster and 2.8L Z3

The most effective horsepower per dollar upgrade for your BMW.  Yields 19 horsepower and 16 lb/ft torque gains in both the 2.8 and 3.2 liter engines.  Flat spots are eliminated, enabling your engine to rev strongly to the increased redline (7400 RPM).  Speed limiters are removed.  Your ECU must be shipped to us for modification. 

P/N  12500032R

Competition Oil Pump/Pan Kit

The M Roadster and 2.8L Z3 oil pans are not adequate under racing conditions. The problem caused the demise of both BMW IMSA GTS entries in the '95 Daytona 24 Hour Race, and all IMSA Racing Stock M3 Lightweights were withheld from the Sebring Race until improved parts became available. Under hard braking and especially into sweeping left hand corners, oil in the sump surges forward and up the right canted-over side of the crankcase. Oil starvation then affects the bearings and hydraulic lifters. The remedy is a new oil pump and oil pan kit developed for the European '95 GT International Series. The pan is specially baffled and the oil pump has two pick-ups instead of one. One pick-up is in the main rear lower sump and one is forward to pick up oil surging to the front of the engine.

If you install a serious suspension system, wide wheels, "R" type tires, and spend time on the track, weigh the cost of this BMW Motorsports engineered package against the cost of a new engine.

P/N 11131404GTP

Fit kit for 96 and later 2.8 and 3.2L engines P/N  11131404KIT

Heavy Duty Hard Rubber Engine and Transmission Mount Kit

Under hard cornering and heavy braking, E36 engines & transmissions can lean to one side contributing to the "missed shift syndrome".  Installation of these improved bushings (2 engine mounts, 2 transmission mounts) can help you avoid a costly repair bill. A must for racing, strongly recommended for autocross, rally and driver's school use.

M Roadster and 2.8L P/N 11810005

Camshafts and Cylinder Head

Roadsport Camshafts for Z3 2.8L

These higher lift and duration cams feature improved profiles for better cylinder filling at an excellent price. Kit includes intake and exhaust cams and our cam installation kit (described below). Works best with custom computer chip. Emissions legal.

E36 Clubsport Camshafts for Z3 3.2 and 2.8L Engines

Lift and profile increased to maximum allowable limits of stock hydraulic lifters, springs, and piston to valve clearances. No internal engine modifications required. Works best with our fully prepared cylinder heads, titanium valve spring retainers and custom chip. Sold in pairs. 2.8L model requires installation kit, below. Horsepower gains achieved above 6000 rpm making these cams ideal for track use.

P/N 1138600M3

Titanium Valve Spring Retainers

About half the weight and twice the strength of steel. Used in all our stage 3, 4 and full race engines. Weight 12.5 grams each.

M Roadster and 2.8L P/N 11342328

2.8L Camshaft Installation Kit

Includes necessary parts for installation of our Roadsport or Clubsport cams in your VANOS 2.8L Z3. Titanium retainers included.

P/N 11396450

© Korman Autoworks, Inc., 1998