P6Χ Racing Engines BMW Motorsport

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Kάποια πολύ ενδιαφέροντα post που βρήκα για τις αγωνιστικές μηχανές της BMW P6X

Gutentag, the BMW Motorsport P60B40 was a very rare engine never mass produced made for racing purpose only! It was designed by Albert Biermann "head of development for BMW's M and Individual divisions". Also it was built in less than six months. The Engine had its first debut in Sebring Florida for team Schnitzer Motorsport and PTG "Prototype Technology Group" at the American Le Mans Series. After the race I saked Bill Auberlin what he thought of the Uber M3 and he said "it is the best BMW M3 he has ever driven!" In 2001 the M3 powered by the P60B40 engine set new standards in the GT classification! BMW having clinched ten races with its P60B40 M3's the cars went on to win both the drivers and constructors championship. The P54B32 M3's also had healthy finishing times. ALMS homologation rules stated that cars must be for sale on 2 continents within 12 months of the regulations being issued, so BMW had some decisions to make. In the end BMW pulled out to retire the P60B40 choosing not to mass produce its Gem, the P54B32 carried on dominating in the curves on the tracks but still lacking the top end torque on the long straight away.

The BMW M3 GTR E46 raced in the USA and in Europe winning many victories, PORSCHE contested because BMW didnΆt make a V8 M3 E46 race car, yet. BMW M3 PTG cars had some of the P54 engines powering the race cars and the other cars that looked identical had the P60B40 engine. To the naked eye they looked the same on the exterior of the Factory P54B32 M3 Race cars.

Ok getting back the BMW P65-B40 is the code name for the new and improved BMW FACTORY RACE ENGINE that replaced the official P54B32 in-line six factory racing engine. The now cult engine everyone wants the P60B40 didnΆt get to race for more than 9 months here in the USA. BMW had a choice build a minimum of 12 street legal BWM m3 GTR's or withdraw the V8 M3GTR BMW did make 3 street legal BMW M3 GTR's that even had a modified front and rear bumper that looks like the same air scoop design as the factory race car minus the flared wheel arches. The hood was unique for the M3GTR P60-B40 and P54B32 because it was vented but not the same design as the one found on the Factory street car GTR M3. BMW Never mass produced it and canceled the project no spare parts can be found except for what you see at a museum or by one private owner in Australia. The only ones left here in the USA can be found at the MOBIL ONE TRADITION museum, they are not for sale and BMW AG would like them back and for some reason MOBIL ONE TRADITION wonΆt sell them back to BMW AG.

So now the P65-B40 V8 is the engine you can get your hands on now at Scottsdale Motorsport dot com and it weighs less than the P54B32 inline six. No this motor is not similar to the V8 M5 that engine is larger in length and heavier than the P65-B40.

The P65-B40 Engine versions are as follows:

BMW M3 GTS= S65 engine with parts from the Motorsport division in it.
P65 GT4
P65 GT3
P65 GT2

The BMW AG Motorsport P60B40 official successor was the P65B40. The S65B40 is related but without all the proverbial secret race guts found internally. Dinan street car parts are different than whats found in the BMW AG Motorsport works race engine. Stand alone BMW AG Motorsport EMS systems exist for GT2 and also for GT3 spec race engines, GT2 is reserved for only the works team GT2. However GT3 is for public customer race car program and setup to meet the limiting rules for the GT3 series. For example 515hp produced in the E89 Z4 GT3 with limitations in place, when we remove the limitations 635hp can be seen on an engine dyno from the P65. The BMW AG Motorsport race engine parts are designed to produce results against other major factory race cars in the ELMS and old ALMS now known as TUDOR. You may be confused if you're trying to compare Dinan to the factory works BMW GT2/GTE/GTLM race cars. The GT3 factory produced cars for the customer race car program are the closest private owners can typically come to owning GT2 original works race cars. BMW AG MOTORSPORT does not wish to sell the works GT2 race cars. Hence why the P60B40 was never sold to the public. However BMW did realize a market exists for the customer race car program, especially if you look at what Porsche has done with it's customer race car program. The birth of the E86 Z4 VLN customer race car came to fruition in 2006 and was to be the next BMW NA works team PTG GT2 race car in the ALMS 2007 season powered by the P54B32 producing 435hp standard before PTG modified it with a prototype turbo.

I should also add the external parts make a big difference as well in street S65 vs P65. Everything is designed to work together so a stand alone EMS is needed as well as your maps, dry sump, valves, springs, pistons, rods, cams, crank, motorsport lines and hoses, etc. Everything is designed to handle more friction and pressure. Nothing lasts forever but getting a good 38 hours of brutal abuse out of an engine for a 24 hour race is the typical bench mark.

In the Z4 GT3, the final evolution of this engine yielded the following numbers:
The P65B40 produces a maximum output of 480BHP.
The P65B44 produces a maximum output of 515BHP.

A race-spec S65 (or P65) is hard to justify for street use, even if it could be done. Most of the companies and race cars that ran them did so to meet homologation requirements and selected this engine due to a combination of the base-S65 engine's flat torque curve, linear power band, high specific output, and high revving character (to maximize the advantages of gearing).
Given that the S65B40 in the E9X M3 is the base engine, it already has all of the characteristics of these engines and is street legal.
Essentially, then, the S65 is your street legal P65.

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