m5board.com Site Sponsors
Join Date: Aug 2008
Location: New York
Thanked 2,515 Times in 1,466 Posts
New to the board yes but not to BMW AG Motorsport and BMW Classic. In fact the only thing offered for the BMW E39 M5 from the factory race department would be for the S62B50 v8 engine, race camshafts. Cool story on these cams after BMW AG Motorsport pulled out of the 2001 ALMS series with its winner v8 P60B40 E46 M3 GTR/GT2 race cars corporate decided not to return for 2002. BMW works team Schnitzer Motorsport returned to Europe to continue racing the P60B40 E46 M3 GTR in the European series but BMW works team PTG was ordered not to compete in the 2002 ALMS. So with the race cars ready to race with the newP60 v8's they removed these prototype engines and returned them to BMW. Owner of the BMW PTG team decided to use the S62B50 street car M engine and modify this motor for race duty changing a lot. BMW AG Motorsport helped with these factory cams the rest was BMW works team PTG engine builder Chris Fletcher who installed a custom dry sump, along with some other secret PTG mods to produce a maximum 558hp. For the record Schrick camshafts had never been used it was always the BMW AG Motorsport 280 inlet and 272 exhaust. Once the engines had been completed PTG installed them into BMW Motorsport numbered works E46 race car roll caged chassis with carbon fiber wide body kit, sold to private teams to race in the GRAND-AM series in 2002. Peter if your looking for these BMW AG Motorsport camshafts let me know.
I'm familiar with the story and of course know of and have spoken to Chris at Fletchermade Horsepower. I may be interested at some point, but all the Dinan DP motors (and other high HP Dinan customer S62 builds) employed Schrick cams, albeit not the 268 duration grinds available in the aftermarket, and I have access to the cam specs if I want them. Would be interesting to compare and contrast. Maybe the custom Schrick grinds copy the BMW AG Motorsport grinds. When I do a NA race build, I will dig into these issues deeper than I have so far.
Managing Member of
Partee Racing, LLC , The S62 Shop, LLC, and The S54 Shop, LLC
Last edited by herrubermensch; 10th May 2015 at 09:23 PM.