Question about 1996 Toyota Celica
Hi i have a 1991 celica gt4 which appears to have scrapped the turbo although im not entirely convinced. It happened the other day under heavy acceleration at first there was a loud bang followed by a ploom of blue smoke. The car still drives [just] it is very under powered and regestering 0 psi on the boost gauge. I should also say that when i took the air intake off the side of the tubo housing i noticed the nut had managed to spin itself free despite being a left hand thread.The fins still span freely with slight play in the shaft I tightened the nut back up the best i could by jamming the fins. I was quite optamistic that the shaft spinning whilst not fixed tightly to the fins was the cause of the problem however the problem remains. Before i go spending money on a turbo i was wondering as the turbo bearings seem fine weather or not something else could be the problem ie piston rings although im not sure this would results in complete loss of boost.
Yup your turbo is toast, ive had the same thing happen on a nissan skyline. The smoke you describe is the oil escaping from the turbo core and burning off in the dump pipe.Even though you managed to get the nut back on the compressor wheel the damage to your exhaust wheel, bearings and shaft is already done, chances are you'l be missing a few fins in the exhaust wheel to say the least, it would've propelled itself in the exhuast housing probably spinning at atleast 25,000 rpm.The turbo in the gt4 is a stong unit, just how much boost were you running? :)
Posted on Jan 12, 2009
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