View Single Post
Bailey Bailey is offline
Registered User
Bailey's Avatar
Join Date: Jan 2003
Location: Beverly MA
Posts: 142
I am resurrecting this thread. I need some thoughts on turbo applications. I have been using an Innovative Turbo Systems GT 66. I have had some issues and am thinking about Garrets. Would appreciate wisdom from fellow enthusiasts.

I have a Porsche 930 GT1 prepared car. Here are my engine specs:

3.5 liter long stroke (3.6 crankshaft)
CMW Motorsport billet d-port cylinder heads with enlarged valves
Twin plug cylinder heads with iridium spark plugs
Porsche 944 Turbo fuel injectors – have been flow matched
Carrera intake manifold
Andial GT 2 camshafts
Proto tech rising rate fuel pressure regulator
Mahle motorsport pistons and cylinders with Total Seal rings
Autronic engine management tuned by KTR Performance in Massachusetts
Innovative Turbo Systems GT66 Turbo (now broken)
Tri-flow exhaust with Tial wastegate
1 bar boost (it is adjustable with autronic)
Two front oil coolers in series

Car uses 110 or 112 octane leaded fuel and Castrol Syntech 5W50 motor oil

On dyno at 1 bar Iwe achieved 485 rear wheel hp and 440 foot pounds of torque.

Thanks for thoughts/ideas,

'86 Porsche 930 GT1 track car
'02 Porsche GT2
'08 Audi RS4
'90 Saab SPG
Old 12-07-2007, 04:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)