I had some blow by, but almost no oil consumption. I've always tuned with less than ideal piggybacks and it made it a little harder, but that was mostly due to low compression. I wouldn't think it would be a big deal, because boost is boost. Low compression is really the problem.
High oil consumption will gum things up and kill them more quickly. That worries me a bit. Did you have the leakdown test done at a shop or did you do it yourself and what were the actual numbers? Was the engine warm or cold? Is your exhaust very blue? (it seems strange that you would burn so much oil with such good compression) |
I did the leakdown test myself, warm engine. I did not record the numbers because at 150psi, air was hissing rapidly out of the dipstick tube when testing each of the cylinders. I just figured the rings were toast.
Should I redo the test and look for something else? I didn't hear any air coming from the exhaust or intake or adjacent cylinders. But this doesn't rule out bad valve guides/seals contributing to the consumption, right? The exhaust is significant in quantity and blue in color but only above 4k rpm. Nothing visible at low rpm. Bumper gets oily soot in less than 100 miles. Thanks again. |
Originally Posted by xveganxcowboyx
(Post 197093)
(it seems strange that you would burn so much oil with such good compression)
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Originally Posted by patsmx5
(Post 197582)
The oil control rings are worn and allowing excess oil on the compression rings, keeping them sealed up with oil, despite their worn conditions.
Good diagnosis. No idea what your best option is on this one, sorry. Oil consumption that high is pretty scary though. |
Dude, you are looking too much into it. So long as the engine doesn't misfire or burn too much oil you will be ok. Yea, you might not make that last 5% of power over a fresh engine, but learn with the beater engine while saving up the bucks for your "good" engine.
Throw the turbo on your engine! |
Originally Posted by mrtonyg
(Post 205196)
Dude, you are looking too much into it. So long as the engine doesn't misfire or burn too much oil you will be ok. Yea, you might not make that last 5% of power over a fresh engine, but learn with the beater engine while saving up the bucks for your "good" engine.
Throw the turbo on your engine! |
Originally Posted by Arkmage
(Post 196677)
that engine restore crap in a silver can seemed to work great on my buddies old school trooper. stopped the oil consumption for nearly 40K miles when it spun a bearing (275K when it died).
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Originally Posted by chucker
(Post 205241)
I just got an $8 can of the "engine restore crap" and, just for the hell of it, I filled it up with Havoline High Mileage 10w-30 (on sale for $0.99/qt). I suspect both products are snake oil... but I'll report back with the results after 500 miles or so.
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