still smoking after HG, masive head scratcher.

[KEMP]

so i put the headgasket on, and it runs better but still smokes, its is NOT the rings since the leakdown test showed within 4-5%!!

the turbo is fine, no shaft play, runs fine, s***s fire all day, and smokes like bob marely is chillin in my GT-spec. haha

any ideas? its not valve seals either.

i can only think that too much oil press is goin to the turbo and still keeping good bearings but blowing by seals.

although i dont kow why it would randomly start that.

Help again, thanks

[mbmbmb23]

Is the turbo non-bb? If so, is your turbine seal mucked up with carbon? If its a BB turbo (GT spec?) , do you have the oil restrictor installed? Do you have an oil link kink after the turbo?....thus increasing the pressure in the turbo?

[KEMP]

gtspec is an exhaust man.

and no its non BB, but its not the turbo, it smoked with the turbo off, i rigged it to idle without the turbo, and it still smoked.

it is head related, it has to be, there is some oil leaking out of the head/block near the 4th cylinder

[r34 gtr]

there is some oil leaking out of the head/block near the 4th cylinder

This is a common problem. Mine leaked in the same place and it was well within spec (< .2 thou ) for block surface flatness. I was using a stock HG too, not a metal one, so why it was leaking is just beyond me.

It will leak there and seal perfectly around the cylinders, so the engine will make lots of power, but leave an infinitely annoying spot of oil on your driveway every freaking morning.

What color smoke, and how old are the rings? If its less than 50 miles, go drive that b**** around at night until it stops smoking. It worked on my dad's Citroen 2CV back in the day.

[KEMP]

well im pretty sure the cometic is causing my problems, and it IS leaking there, AND into the cylinders, with perfect surfaces.

im putting on a felpro permatorque tomorrow to end this cometic hell hole of gaskets......hopefully.

thoughts?

[trevr]

Just going to add this in, I know your going to check the hg, but also check your turbo oil return line.

No 90° turns or kinks in drain line - correct?

[bentvalves]

yea lightly spray that felpro with copper spray, light coats all the way around until its a uniform copper color, dont go thick.

dont use an entire can on a headgasket, thats just stupid.

[r34 gtr]

Copper spray is the only way I seal head gaskets, metal or not. That s*** is the truth!

[KEMP]

ok will do, should i put the gasket on while the spray is still tacky? or dry?

[KEMP]

yea lightly spray that felpro with copper spray, light coats all the way around until its a uniform copper color, dont go thick.

dont use an entire can on a headgasket, thats just stupid.

also, do u have a build thread? i noticed you aiv and stuff are deleted, i want to do this as well, but do not know where sto start, and im curious how your crankcase vent works.

pics of engine bay at different angles pleaseeee

[Buddyworm]

gtspec is an exhaust man.

T** = Garrett Journal Bearing turbos. (ie: T28)GT** = Garrett Ball Bearing turbos. (ie: GT28)

Also, unless your block has been subject to heat that would seriously warp it you shouldn't need to use the copper spray with the Felpro. The head's are predominantly what like to go funny on you. So if that's flat you should be good to go. Plus that copper spray is a pain in the a** to get off your mating surfaces if you blow it again

[bentvalves]

no i dont have a build thread, but i recently reinstalled the AICV. And copper spray ftmfw....if you dont and it leaks again your going to wish you had used it. Removing it from mating surfaces is as simple as putting a little xylene on a rag.

click my sig pic, then click other images from this user to see more detailed images.
Modified by ks13 at 11:10 AM 4/11/2009

[boost_boy]

so i put the headgasket on, and it runs better but still smokes, its is NOT the rings since the leakdown test showed within 4-5%!!

the turbo is fine, no shaft play, runs fine, s***s fire all day, and smokes like bob marely is chillin in my GT-spec. haha

any ideas? its not valve seals either.

i can only think that too much oil press is goin to the turbo and still keeping good bearings but blowing by seals.

although i dont kow why it would randomly start that.

Help again, thanks

I'm going to say this to you and hopefully you take heed. Once you try yet another h/g, I want you to revert back to some of the things you posted if it still gives you smoking problems. I asked you to pull the pistons because metal don't just go to pieces like that as I do believe the cometic gaskets are more durable than your pistons. Let's hope and pray your mechanic friend is correct and you didn't make a mistake by not pulling the pistons to check the condition of them. You detonated your and destroyed a metal h/g, so don't you think pistons' ringlands deserved an inspection? Even the most novice tech would know that after a catastrophic detonation event, critical components deserve a thorough inspection?

I got a feeling your problems are waaaaay past a cometic gasket. I've never had a problem with cometic, but a bunch of folks on here say that they have. I have reused them over and over and have never had a sealing problem. I have cracked many a ringland under less severe condition and compression readings as well as cylinder impressions were still near perfect. All I'm trying to say is, if that doesn't stop the smoking, consider the inevitable.

Dee

[KEMP]

the pistons were checked, and nothing was wrong, rings were fine and so were the ringlands, the car has reduced smoking greatly.

smokes a little, but i have also only driven it 10miles MAX, runs great though, compared to last time.

[dash]

Quote »T** = Garrett Journal Bearing turbos. (ie: T28)GT** = Garrett Ball Bearing turbos. (ie: GT28)[/quote]Some garret "GT" turbos are not ball bearing. "R" suffix tells u if it is bb

[KEMP]

who cares, when somone says Gt-spec, noone with a 240 should think its a turbo, haha

[bentvalves]

when I hear GT spec said I honestly think garret ball bearing center section.

when you say pistons/rings were checked do you mean removed entirely and inspected, or top compression ring inspected being squeezed in bore by rocking piston to side and using flashlight to see it all intact??