Sr20det Blacktop - Major Smoke

[Norcal510]

problem solved. Replaced motor
Modified by Norcal510 at 4:28 PM 4/9/2010

[ard]

it might be piston oil rings - it leaves oil on cylinder walls and compression rings gets good seal with the wall and compression seems good or even increases ~1bar.or it can be valve seals, leaking oil through valves. try to remove camshafts and change valve oil seals. if this doesn't help, then rings.

[Norcal510]

Genius,

I'll order valve seals & see if that makes a difference. If that doesnt fix the problem. To replace the oil rings do I need to take that to a machine shop? Also if the oil seals are bad would that scar the walls?

I really hope this fixes the issue. I really appriciated your guidance. Its hard to find people who know what they are talking about.

Thanks

[ard]

bad oil rings does not damage cylinder walls, but everything (cylinders, pistons, crank) must be measured and regrinded if needed. to put out pistons, you have to take out the head off (duhh), so cylinder head must be measured for distortion and resurfaced if needed etc etc etc... you can do it yourself if you have tools and knowledge, but i don't think you can do the boring (if needed) yourself.i would do a lot by myself, but all major resurfacing and regrinding would be done by machine shop by my command

btw: you said "Every time I pulled the turbo off. The last two exhaust chambers had lots of oil."it really can be bad oil rings - maybe put upside down, or bad gap or anything else. freshly rebuilt doesn't mean that everything is mint

Edit: i forgot that when seals are bad, guides usually also are damaged, the shake of the valve in the guide destroys the seal.