Slow '90 supra turbo :( Bad turbo?

DialTone · 12-20-2004, 01:14 PM

Hi,

Have recently acquired a Mk3 Supra Turbo (7MGTE w/ CT26 turbo, no mods). Engine seems to run OK, no smoke, no overheat, 40psi oil pressure, but turbo boost only running 0.5-1 psi. Pickup is terrible (0-60 maybe 15ish seconds), and top-end of around 90mph [would this be normal if the turbo shaft was broken?]. Auto box seems to be kicking up/down OK though.

Firstly, anyone have any suggestions as to what I might want to look at first? Secondly, if the turbo itself is faulty, how easy are they to swap over? I've already checked the diagnostics - no errors, and removed the inlet hose and checked that the inlet rotor spins freely, no noticeable splits in hoses, but sounds like maybe it is venting pressure somewhere :S

TIA
Tony

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12-20-2004, 01:14 PM	#1
DialTone Stock Join Date: Dec 2004 Posts: 8	Hi, Have recently acquired a Mk3 Supra Turbo (7MGTE w/ CT26 turbo, no mods). Engine seems to run OK, no smoke, no overheat, 40psi oil pressure, but turbo boost only running 0.5-1 psi. Pickup is terrible (0-60 maybe 15ish seconds), and top-end of around 90mph [would this be normal if the turbo shaft was broken?]. Auto box seems to be kicking up/down OK though. Firstly, anyone have any suggestions as to what I might want to look at first? Secondly, if the turbo itself is faulty, how easy are they to swap over? I've already checked the diagnostics - no errors, and removed the inlet hose and checked that the inlet rotor spins freely, no noticeable splits in hoses, but sounds like maybe it is venting pressure somewhere :S TIA Tony