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05-19-2010, 09:33 PM
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#1 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. |
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05-20-2010, 08:27 PM
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#2 |
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3" Exhaust
Join Date: Mar 2010
Location: georgia
Posts: 59
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still running the stock ECU man this car has got the bugs or somthin, as of right now the block being bored .20 over the roating assemble is getting balanced (wisco pistons eagle rods AC bearings) so if i see a sensor that even looks like it might be messed up then ill replace it this thing has been broke to long!
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05-20-2010, 08:46 PM
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#3 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
At the very least, I'd ask that you don't tell anyone that we said you should rebuild the engine because of an rpm problem - because we didn't!  Thanks in advance...
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 05-20-2010 at 08:48 PM. |
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05-21-2010, 01:27 PM
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#4 |
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3" Exhaust
Join Date: Mar 2010
Location: georgia
Posts: 59
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Dude I am telling you the whole story. The only reason we pulled the motor because of was wore out but for all we know it still has the rpm limiting problem
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05-21-2010, 02:08 PM
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#5 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 05-21-2010 at 04:19 PM. |
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05-21-2010, 03:19 PM
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#6 |
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3" Exhaust
Join Date: Mar 2010
Location: georgia
Posts: 59
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To start with I did a pressure test and found that the head gasket was blown then did a compression test and found that all the cylinders were down. After we pulled the head it was obvious you could see the four marks in the cylinder made from the piston skirt had been walking up and down the cylinder. The machine shop said it had to be bored. Here it is the whole story.
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05-21-2010, 04:19 PM
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#7 | |
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Supra Owner
Join Date: Oct 2005
Location: GA, USA
Posts: 2,209
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Quote:
Sorry to say I'm still a bit confused though. In post 33 you said it's already running after the rebuild...with no codes, in post 31 you say the cam sensor was broken in two pieces, and in post 35 you say you haven't fixed the cam sensor yet. How could it be running with no codes if you haven't fixed the broken cam sensor yet? Oh, and the engine damage you describe is only caused by one thing - running too much boost with not enough octane. Someone was obviously trying to crank the boost up using pump gas. Your aftermarket parts aren't going to handle detonation any better than the oem components - so if you want the rebuild to last, be sure to run high boost only on high octane race fuel. If you follow this rule, the oem 2jz-gte components (yes, bone-stock) can reliably handle over 1000hp (with aftermarket turbo, injectors, and cams of course). The limit on 93 octane ((r+m)/2) pump gas and the oem ecu is about 14psi with the oem twins, and maybe 16psi or so with the oem ecu and a big single turbo. To cause the damage you describe, I'd guess someone was trying to run in excess of 22psi on pump gas.
__________________
Phil '94 Supra Turbo, 6spd, 'APU'+ Displacement is no replacement for boost. Life begins at 30psi. NB: Please consider posting any help requests in a new thread instead of asking me for help privately. About 99.9+% of the time, private help requests end up covering great information that could be very valuable to other forum members. If you have a good reason for needing the help request to be private, I'll consider it. If not, then why not give everyone else the opportunity to pitch in too, and/or learn from the information? Remember, there's no such thing as a dumb question. We're all here to help within this family of Supra owners. Last edited by pwpanas; 05-21-2010 at 04:22 PM. |
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