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Who can you trust to build your engine? With over 35 years of BMW engine building experience, Korman Autoworks is your best choice. Whether you need a stock rebuild, Stage 1, Stage 2, or Full Race Engine, call us first. (see related information under REBUILDING and TURBOS) |
Oiling System and Reliability
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The M3, 328, and 325 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 Motorsport engineered package against the cost of a ruined engine. P/N 11131404GTP |
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E36 Oil Cooler Kit E36 Six cylinder motors will run at 250° to 270° oil temperatures in racing and driving school conditions. These temperatures are at the upper limit of the best synthetic oils and critical for petroleum based oils. We have seen engines where the customer had been told that he must have missed a shift because of the valve ticking noise, but the problem was that the hydraulic lifters had turned black and blue from heat and the lifters and lifter bores were scored causing sticking. For hard running and on-track reliability, the oil cooler is strongly recommended. For racing it must be considered essential. Unlike other kits ours is sold complete and ready to install with new oil filter housing drilled and tapped to fit original oil pressure sender (if an electric oil pressure gauge is to be added, order our VDO Double Sending Unit P/N 6236024 and adaptor P/N 622400230), oil cooler, pipes and fittings, modified alternator air duct, o-rings, etc. E36 Oil Cooler Kit P/N 1142K000366 |
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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" (looks like this). 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. E36 M3, 328, 325 P/N 11810005 |
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Heavy Duty Alloy Engine Mounting Bracket Look at the right side cast aluminum engine bracket on your M3, 328 or 325. You will notice that due to the tilt of the engine (30°), this bracket carries the bulk of the load. This bracket does break under competition conditions. Our special heavy duty alloy bracket was designed to withstand the stresses of racing. Use with our heavy duty mount kit, above. E36 M3, 328, 325 P/N 11811492M36 |
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Aluminum Thermostat Housing The OE plastic thermostat housings are a common failure point. Over tightening, heat and time lead to eventual cracking and sudden coolant loss. Our aluminum thermostat housing is a direct replacement and eliminates the problem permanently. E36 M3, 328, 325 P/N 1153K722531 |
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Aluminum Radiator This 100% aluminum radiator resolves issues with the failure prone aluminum and plastic original equipment radiators. Eliminates leaking seams and upper hose necks which simply fall off with no warning. A true bolt-in conversion, accepts all factory fittings, shrouds and mounts. E36 M3, 328, 325 P/N 17111E36 |
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Korman Auxiliary Fuel Supply System With a good suspension kit and spec type bigger tires, E36 cars will suffer fuel pick-up problems in corners with just under a half tank of fuel or less. Our kit with a high output Bosch pump feeds the motor from a pressurized auxiliary reservoir assuring a constant fuel flow down to the last gallon. P/N 1331K100KIT |
Camshafts and Cylinder Head
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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). Requires custom chip. With our custom chip original emissions specs are maintained. Revs to 7000 rpm's. P/N 11382528KIT
Chart shows 2.8L engine with Korman Roadsport Cams, Custom Chip and Full Racing exhaust system (stock peak HP 193@5300 rpm, peak torque 206 lb/ft@3950rpm) |
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E36 Clubsport Camshafts for M3, 328 & 325 VANOS Engines Lift and duration increased to maximum allowable limits of the 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. 10.55mm of intake lift, 9.95mm of exhaust lift. Sold in pairs. 328 and 325 models require installation kit, below. Horsepower gains achieved through the full rev range and especially strong at top end. P/N 1138600M3 328/325 Camshaft Installation Kit Includes necessary parts for installation of our Roadsport or Clubsport cams in your VANOS 328 or 325. Includes special valve springs, titanium retainers, valve locks, and hardened lower spring plates. P/N 11396450 |
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Schrick Camshafts-325 Non-VANOS Schrick cams represent the newest and most advanced designs for BMW engines. Sophisticated changes in lobe center angles and larger base circles enable reliable utilization of high lift. Their chief quality is their ability to produce a great increase in power across a wide RPM range. Clean idling and strong bottom end torque are combined with superior top end power. They do not require fly-cutting the pistons for additional clearance, fuel injection modification or any additional installation parts. Must be installed in pairs. 256º duration, 10.4mm lift. P/N 11386256 |
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S50/M50 Engines and Valve Spring Retainers High revs can drive valve stems down into the original retainers, and sooner or later cause the valves to drop through the retainer into the combustion chamber. This can destroy the piston, cylinder head and sometimes the connecting rods and block. BMW has updated the retainers on 97> cars to address this issue. We offer two choices, the hardened BMW steel retainers or the lighter, stronger titanium retainers. 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. E36 325 (single valve spring only) P/N 11342325 E36 M3 & 328 P/N 11342328 BMW Hardened Valve Spring Retainers P/N 11341432453 |
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Korman Computer Chips BMW's shipped from the factory are designed to run safely on a wide range of fuels. By optimizing ignition advance and fuel curves for premium fuel (92 octane or higher), significant horsepower and torque increases can be realized. Early E36's have a replaceable "plug in" P.R.O.M. chip which can be shipped to you for installation (please provide your engine control unit number when ordering). Later models incorporating BMW's anti-theft circuitry require you to send us your entire control unit for reprogramming. On all chips, the top speed limiter is raised. Rev limits increased to 7000 RPM for M3 and 325 chips, 7200 RPM for 318. |
| Car | Stock HP | Chip HP | Stock Torque | Chip Torque | "Plug-In" Chip | "In-House" Reprogramming |
| M3 >12/95 | 240 | 259 | 225 | 243 | 124S50100 | |
| M3 12/95> | 124S50100R | |||||
| M3 3.2 | 240 | 250 | 236 | 246 | n/a | 12500032R |
| 325 ECU#402 | 189 | 201 | 185 | 194 | 124M50100 | |
| 325 ECU#403, 405 | 124M50200 | |||||
| 325 ECU#413 | 124M50300 | |||||
| 325 12/95> | 124M50300R | |||||
| 328 | 190 | 196 | 206 | 194 | n/a | 12500028R |
| 318 92-93 ECU#070 | 138 | 148 | 134 | 147 | 124M42200 | |
| 318 93-94 ECU#168 | 124M42300 | |||||
| 318 94-95 ECU#626 | 124M42400 | |||||
| 318 94-95 ECU#913 | 124M42500 | |||||
| 318 95-early 96 with Bosch ECU#595 | 124M42600 |
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Custom & Race Computer Chips We have several configurations for M3's, 328's and 325's developed on our dyno for racing and custom applications. Adjustments are made for racing exhaust systems, fully prepped cylinder heads, camshafts, increased displacement, race fuel, etc. allowing you to get the most out of your engine. Call for pricing and details. |
© Korman Autoworks, Inc. 1997-2000