Turbo Recommedations Please

[Chris Wilson]

Application, RB26 DETT engine, to go on a single turbo HKS cast iron, T4 flanged, remote wastegate manifold. I am adamant about a cast iron manifold, reliabilty is paramount, i can't afford a proper Inconel manifold and ALL the mass market stainless ones seem to crack with long term, hard, serious track usage.

Engine spec:

Steel crank (Farndon, who made them for HKS), at stock stroke. Tomei rods, Tomei 280 degree cams with 10.8 mm lift, both inlet and exhaust. New stock head with mild porting and decent valve job, stock sized valves. New N1 block, Tomei oil pump, N1 water pump, on stock size RB26 throttle bodies, and stock plenum, also considering single throttle body plenum, jury still out. Pistons are Tomei forged with cooling channels and titanium coated rings. Management is Motec M800 with 700 cc injectors (Denso). Car is RWD R33 GTS-t, proper brakes, weld in cage, LSD, dog box (T5 motorsport box, on custome bellhousing), proper suspension, LSD in auto ratio CWP, blah blah. To be used as fun track day car, if the engine is too much it will go in a 4WD chassis for similar usage. Want a T4 flanged turbo, not using an adaptor on a T3, good spool, a genuine 600 plus BHP with good torque. Will be mapped on an engine dyno, tweaked on a chassis dyno and the road. I need a turbo with a rebuildable spec, and one where I can play with housing sizes to trim boost characteristics, so nothing weird

Would a Garrett GT42 be too big?

Thanks for any advice.

Edited March 27, 2006 by Chris Wilson