Engine gurus, Where do I go next? Tore down 2270, Burning lots of oil |
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Engine gurus, Where do I go next? Tore down 2270, Burning lots of oil |
DNHunt |
Jan 29 2005, 03:33 PM
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#1
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914 Wizard? No way. I got too much to learn. Group: Members Posts: 4,099 Joined: 21-April 03 From: Gig Harbor, WA Member No.: 598 |
I drove 160 miles Wednesday trying to seat the rings. I used 3 1/2 quarts of oil. I would have made a Navy destroyer proud.
So, today I went looking for reasons. There was a small leak at the oil pump so, I resealed that and a little oil on the bottom of the oil filter. Neither could explain my oil consumption so off with the heads (and PCs too). Attached image(s) |
Jake Raby |
Jan 29 2005, 04:10 PM
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#2
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
Dave, that looks very odd, almost like the engine never warmed up!
It also looks like the oil had some contamination, because piston/skirt clearance issues usually severely damage the portion of the pistin directly under the oil ring, and totally smoke it. The piston/cylinder clearance was set by the Nikisil platers themselves using the pistons used in the engine! We use .0015 as a standard clearance with these cylinders and pistons and this has never occured before. I want to see those cylinders and pistons- something odd is going on here. With those same components I have never seen this before. My new 2316 has the same cylinders and same clearance, my pistons came from the same batch as Dave's and so did the cylinders. |