Join Date: Aug 2002
Location: At the apex, blocking your pass.
For an HPDE car, I'd be more comfortable with a naturally-aspirated engine rather than any forced-induction combination, mainly because of durability and cooling concerns.
For an HPDE, you're going to be most likely driving the car to the event, using it to get to/from the hotel, and driving it home at the end of the weekend. It'd suck if the car broke during the weekend, leaving you to rent a truck AND a trailer just to get home. A $500 weekend just turned onto a $1000 weekend.
Keep in mind that while on track, you're going to be running WOT most, of not all the time, near the readline, for 20-25 minutes at a time, five times a day for two days. That's up to 250 minutes or 4 HOURS at WOT near the redline per weekend.
A blower or turbo combination for $2500 may be doable, but you wonf have enough left over to address the needed tuning and coling modifications to get the car to be RELIABLE under these conditions. I've seen it happen many times. The guy's having a blast until he blows a head gasket (of he's lucky,) or that pinging he couldn't hear ends up burning or shattering a piston.
For $2500, I'd invest in heads, cam, intake, and cooling upgrades.
-- Robert King
NASA AI #42, Texas
Instructor, NASA Texas Region
Instructor, TWS Perf. Driving School