I spoke with Geoff today a bit more about what he has in mind for this TT build. To answer a previous question, yes the stock manifolds are cast iron (CI), but Goeff is using a better flowing design that will keep velocities up to help spool the turbos and provide better flow overall.
The goal with this build and the stock engine and driveline is roughly 500 to 550 whp on an A6 and about 600 whp with the M6.
Geoff is making this build upgradeable depending on the additional modifications each individual is willing to do, ie. forged rotating assembly, 9" differential, transmission upgrades, etc.
For the actual turbo, Geoff is looking at the Precision ball-bearing turbo assembly. He is using the ball-bearing desgin instead of the bronzed sleeve style bearing because it will allow the turbo to spool more quickly and provide increased longevity.
The exact boost levels are not known at this time for obvious reasons, but Geoff did mention that boost will not exceed 10psi because we are using the car's stock configuration.
That is all I have for now. I see we have some additional people subscribed. Please keep the questions and interest coming. HAve a great July 4th holiday everyone!
Oh yeah, one last item for you guys to chew on. A video of a 914 whp TT vette that Geoff built. Enjoy!
2009 G8 GXP, SRM, M6, Onyx, Roof. (#1818 of 1829) a.k.a Gianna
Show: Tint, VG Sharkfin, 3M clear bra, 6000k HIDs, 20" TSW Interlagos.
Go: BMR, GForce, MGW, Monster Clutch, 3" SOLO, Dynotech, Squash DW255s, Tein, NLP Twin Turbo!
Stock: 363 whp/367 tq SAE (Dyno Jet) 13.149 @ 108.21 mph
Mods (old): 399 /399 SAE (Dyno Jet) 12.711 @ 108.66 1.548 60' w/MT ET Streets
Mods (new): 602/614 SAE 10 psi, 6* (Dyno Jet) 11.33 @ 125.26
Last edited by Rillo71; 08-24-2012 at 12:15 AM.