Snapped Exhaust Manifold

[t_revz]

4 with broken ringlands never picked up and was barely a mark on the bore at all with broken bits still wedged in their original position.

Other one with broken ringland was also the one with melted crown and the piece of ringland had melted away aswell as bent top ring etc and only picked up 4 or 5 thou.

1-5 had same compression and number 6 was a bit lower. 6 always had black spark plugs while others were clean.

After every 5000km it was off the dipstick. Topped it up for 90000 til I got around to rebuilding it.

I was only expecting 1 damaged piston but only 1 had survived.

[jjman]

yeah right. I thought that might be the case as when iv seen pics of pistons with broken ringlands the rings themselves looked ok still.

Hardy RB's FTW

[Mick]

im not sure exactly how to check if my timing is out, i have the equipment to check it though. and if its out i dont know how to fix it, i dont even know what its supposed to be set at exactly

[Mick]

do you adjust the timing just by losening the CAS and rotating it slightly?

[Moodles2]

First the ECU needs to be locked before any adjustments are made, either by doing it via consult, or disconnecting the TPS sensor (or was it the AAC?).

[jjman]

i took my car to the tuners recently to have the timing checked as it was retarded by 4 degrees.

Anyway, they adjusted it while the car was idling n didnt do the lock mode tds thing- tho they got the signal of coil No.1 (and of course a warm motor...)

also we were checking that the ecu was running 15btdc as we adjusted it.

worked fine. back at 15 btdc

Edited November 17, 2012 by jjman