Insane Oil Consumption, 427 LS1...
Insane Oil Consumption, 427 LS1... Well, I got the motor going, but it burns an incredible amount of oil, about 1.5 quarts every 200 miles. After I turn off the car, there is oil smoke inside the intake manifold. There are oil droplets coming out of the tailpipes as well. I'm thinking it is from the rings not scraping the oil off the cylinder walls. I was told that this may be caused by my Diamond pistons and rings, and their poor design. My Diamond pistons only had four oil return holes on the bottom ringland. Anyone ever heard of this before. I don't have time to tear the motor down again until december at the earliest. Are there any temporary solutions to reduce the oil consumption until then? I'm running 10w-40 Castrol GTX in it right now, can switching to a synthetic help reduce oil consuption? Or what about a 50 weight oil? Any help is appreciated, thanks!
Leave the regular oil in it for now until you figure something out. Assuming the correct piston/wall clearance was achieved and the rings set up properly, I'd look first at he PCV setup. The motor could be sucking the oil through the PCV. Also, make sure the intake manifold is torqued down properly and there aren't any bad seals that could be letting oil seep past. If all this checks in ok, you may have a bad valve seal that didn't swell.
And of course a compression test may be in good order at this point obviously. good luck
Jason
And of course a compression test may be in good order at this point obviously. good luck
Jason
Originally Posted by CrawlinWS6
I had the same amount of oil consumption from my ls1. Then 2 weeks ago, it blew! Becareful!
Well there is a little oil in the PCV tube, but I think that's normal. It has the LS6 PCV conversion. Anyways, I dont think the PCV can injest that much oil. I'm definitly betting on the rings 
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Originally Posted by Beast96Z
Hopefully you didn't wash the rings out with your bad reluctor wheel?
This blows
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What part # ring set are you runnin. You don't have a low tension oil ring by chance do ya? Might wanna give Diamond a call. Hopefully I am wrong but I don't think that much oil consumption is gonna go away. Have you pulled the plugs yet to see which ones might be burnin oil?
Have you pulled the plugs yet to see which ones might be burnin oil? 
cant you just run the **** out of it to seat the rings
Originally Posted by Ferocity02
I was told that this may be caused by my Diamond pistons and rings, and their poor design.
I hope there is no truth to this as I am running a so called "off the shelf" piston from Diamond for my 427. I personally haven't heard of Diamond pistons causing this kind of thing in their inherent design. If they're that bad of a piston and ring setup, so many people wouldn't run them.
Diamond pistons are fine, there's nothing wrong with them. First thing I'd do is ditch the pcv system completely, do a compression check to make sure you didn't do any damamge when you had the problems, and then try running it some more and see what that gets you.
Originally Posted by Ferocity02
How does washing out of the rings happen, and how does it affect oil consumption? Does it hurt the rings or the cylinder walls, or both? Basically, yes, the rings in cylinders 1,2,3, and 6 got a nice shower of gasoline with the bad reluctor wheel...
This blows
This blows
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Joined: Jan 2003
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From: AUSTIN TX
If you fuel washed the cylinders bad enough it could have ruined your rings. Basically if you are dumping fuel into the cylinders it rinses the oil film off of the cylinder wall causing the rings to scrape the cylinders and damage both the hone finish as well as the rings. If that happened, it might improve somewhat with time, but weill never be right. In the worst case scenario it could also have chipped the moly out of the top ring.
