Hank Peabody

iTrader: (2)

Ive been going smaller and smaller on turbo bits trying to get quick spooling. Here are my results over the last two months going from S300s to S200s to little housings on the S200s. All have the same tune in the same car. ~3000# car (64 Nova) with a M23 4 speed and 2.41 rear gear. All of these logs are done starting at 2000rpm in 3rd gear (1.5) so the equivalent of a 3.6 rear gear and 1:1 trans ratio. (1.5 * 2.41)



Anyone have anything that spools faster? I figure gt2871s would spool a little faster, also T3/T4 stage 3 turbine turbos. Im obsessed with driveability over max power obviously

stevieturbo

driveability or low rpm torque ?

And at what end goal for max power ? rpm range ?

Mine spool nowhere near as quick as your S200, but in no way does that have any real negative impact on driveability

A lot of OEM turbo cars will see good usable boost before 2-2500rpm, so on that level, there is still room for improvement. Just depends how much you want at the other end though

Presumably some of those were T4 flange, and the smaller sounds like a T3 flange ?

rotary1307cc

iTrader: (5)

Ib would include what combo of the borgs you used. There are multitudes of different wheels to use in each chassis

Hank Peabody

iTrader: (2)

61/70 turbine on the S200s and 68/76 turbine on the S300s. The cheapest models of each.