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) |
rick 918-S |
Jan 29 2005, 04:59 PM
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#2
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Hey nice rack! -Celette Group: Members Posts: 20,489 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region |
Air cooled is not my thing but, who did the heads? Check the stem to guide clearance. Do the type IV heads have oil seals on the top of the guides?
That's a serious burn deposit on the piston tops and combustion chambers! The other possibility is the crank case venting. Check the inside of the far end of the vent tubes to see if there is raw oil coming through. I attempted to modify my crank case venting once. The method I used caused the vent hose to act like a drinking straw. I had a clear line for a vent hose and you could actually see the oil move through the line just as a huge plume of oil smoke came rolling out the exhaust! Also, The scuffing on your pistons skirts could have come from the early injection problems you were experiencing.an over rich condition could have been washiing out the oil control ring. One problem I see is too many modifications going on at one time. You have a freah big bore motor with the potencial to have many issues that will need to be worked through, then you attempted to install an untested injection system without a good solid base line function. (IMG:http://www.914world.com/bbs2/html/emoticons/screwy.gif) I admire your drive and persistence. Hang in there you'll get it! (IMG:http://www.914world.com/bbs2/html/emoticons/clap.gif) |