20B10AE

iTrader: (14)

My friend just dropped a motor into his 87 TII a couple of weeks ago. The motor had 23,000 original miles on it. The only thing is, it sat for about a year and a half before being installed.

It fired right up when he installed it, and the car ran great. The only mod done to the car was the precat had been hollowed out. It pulled like mad, and overall, seemed to be doing fine.

Last night, he went to get some gas after letting the car warm up for about 10 minutes. On his way back he got on it hard in 1st, and as he shifted into 2nd, another friend saw "sparks" fly from the exhaust during the shift. The car lost almost all of its power, and sounded like it was running on one rotor.

Apparently, there was NO sign of detonation whatsoever. He pulled the plugs, and said he felt compression on the front rotor, but not the rear one.

So, blown motor? Or could it be something else much less extreme?

tesla042

mm...not sounding good.. The ole' ATF trick can sometimes work miracles..

There's a recent thread about how to check compression with a normal compression checker.. your friend may want to try that.

A quick and dirty way to check for a blown apex seal is to pull ONE plug (leave both in the other rotor housing), and crank the engine.. Listen for three even-sounding pulses of air.. like "pssst pssst pssst". That's good. A blown apex seal will give one hard pulse, and two weak ones.. like "pssst fwww fwww".. A bad side seal will give two hard, one weak, like "pssst pssst fwww".. Of course, the apex seal COULD have taken the other(s) with it... so you'd just get "fwwww fwww fwww"...

Try the ATF trick...nothing to lose..

Tho.. sparks...hmm.. if the apex seal went thru the turbo, it most likely destroyed that, too.. good luck!