Older 90 fast TB what were the probs & cures
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Older 90 fast TB what were the probs & cures
I can get a great deal on a unused early run FAST 90 TB. They had issues what do i need to make sure it doesn't stick? I need to change the spring too no?
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Originally Posted by just-a-z
I gotta know how it caused you to blow a motor?
BUT then on a HOT TEXAS summer day while i was at the track at the end ofthe sixth or seventh run my motor detonated, knoched a chunk out of #7 piston and cracked the cylinder lining. I had accidently left 87 octane in it that day and thought that was what blew my motor. But after i get a new motor and have everything perfect go back to dyno it again and it is STILL doing it! The TPS was reading 0 % at idle and 100% at WOT so no one thought that was the problem, hell it was a new TPS. But as i sat there on the dyno i SLOWLY started to give it some throttle and it would be at 2,500 rpm's before the TPS would read any change. I thought it HAD to be the TB. Put in a TPIS 90mm and now as soon as i touch the throttle the TPS registers right away. and no more jumping to 34* half way during a run.
Turns out the shaft is too short on the FAST and it doesn't reach far enuff into the TPS.