supra head gasket questions+ rebuild

[SideWinderGX]

Originally Posted by Andy C

The cambelt is completely perished and im suprised it hasnt already snapped, i noticed fibre deposits round the pulley area anyone know what this might be?

my supra is a 89 my first turbo car, had a few ftos and they were great but this engine is something else.

watch out...your oil cap is backwards too. thats asking for trouble.


no...but in all seriousness, dremel out the intake plenum and the exhaust manifold too. some nice gains to be had there, while its out and accessible...and you have time lol. beautiful looking car, and you can fix up the engine easily.

the nuts on the bottom of the turbo for the hard oil lines are a pain in the ass. get underneath the car with lots of light, or a big flashlight, and use some extensions to reach up to the turbo and it shouldnt be a problem once the socket is on the nut. hopefully yours werent as rounded as mine were, because it took me a long time in 20 degree weather to get them off.

[Andy C]

thanks about the oil cap, ill get straight on it.

well couldn't gete under the car so got them out from the top and a couple of others thinking these were the ones i was touching, ill be able to see more once the turbo is out.

went to disconnect the turbo from the exhaust and once i took the nuts off i noticed the thread has to come off looks like a female torx socket..
does anyone else have these?? seems a little odd, i think i have disconnected everything still seems pretty tight though.

I'm quite nervous about it all as Ive never attempted this sort of thing before, I'm taking it slow. not to sure what to do with the head just skim it or the more, really depends on money any way more later with some pics

[supramacist]

No sir it does not depend on money. You unbolt it.
You have it machined. 3 to 5 hundred bucks and just go ahead and get it ported and polished or you'll forever be kicking yourself.

[SideWinderGX]

lol supramacist.

the two bolts for the turbo oil line? yeah, theyre hex nuts, and im not sure if theyre supposed to come off with the threads, but *one* of mine did and the other stayed in.

how the hell did you get it from the top? i have skinny fricken hands and arms and in no position at all could i get it from the top...good that you got it off though.

[supramacist]

You can lap the block.

But you can't skimp on the head or it'll bite you in the arse.

That's all im saying.

[Bill UK]

There are two turbo oil pipes you will need to undo from the block, one is the inlet (banjo fitting) and the other is the outlet, held on with two standard hexagon nuts. The fibres around the pulleys could be due to the pulley tensioner bearing seized or worn.

[Andy C]

well finally got the the turbo off and what a bugger too, i also spent ages trying to realese it until i realised the was a union nut to undo.
ive got to do so re reading to see about the splitting the head and the timing marks etc. any help appreciated. more pics soon.

[ddmcse]

you can do it dude just take your time

[Andy C]

thanks for all your replys, thanks bill good picture came in real handy,
took the radiator off last night fans and pipes, not alot left to do now i think before removing the head.

ive got alot of built up oill under aroiund the engine have no idea where its coming from, can i get a pressure pressure washer on the engine bag or do you reckon that could muck up the electrics?

before i takethe head off do i time the engine by the crank so the 2 pulleys are aligned uop with the back plate? then pull the belt off or can i do this after?

i heard the crank has to come off to replace the belt why is this.?

still unsure about the head though. can the cams be left in to skim it or do i need to remove cams and valves?

alot of questions i know but wouldnt be able to do it without you guys
thanks. more later with some pics. andy.

[Andy C]

great pictures, where do i get a lapping tool and paste? is it hard to do.
do i need to be careful not to get any past in the oil?water channels?