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Originally Posted by 96LTWM3
For those that follow Motorsport and saw the second half of the Rolex series remember that midway through the season the Ganassi racing team finally ditched the 5.0L S62 in favor of the new Dinan 4.5L S65 racing motor. They blew 3 motors in a handful of races. IIRC 2 failures were due to "valve-train" failures.
When it comes to my money, Dinan wins simply due to their racing experience and 50k warranty. If you do ever have a problem, they will take care of it.
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Not sure "ditched" is the right word here. Three years back Steve gave a talk where he said they were probably going to be forced to switch to the S65 by the organizer during 2011 (note it ended up being 2.5 years later). I made a post about his talk on the M5board back then, so I'll just quote the snippet I posted back then (lest my memory fail me with revisions, lol):
Quote:
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Originally Posted by CSBM5 Nov2010 on M5board
Next year they have to use the S65, and he didn't sound too excited about it since the largest displacement they can get out of the S65 is 4.5L. He thought they could get close to the same peak HP out of the S65 as the S62, but they'll have to rev it about 1500-1700rpm higher resulting in more pumping and frictional losses. The only pros were that it is slightly lighter and smaller, so it can be placed a bit lower in the chassis, and they'll have some small amount of ballast they can place appropriately.
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Regards,
Chuck
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