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Originally Posted by DEVIL'S ADVOCATE
Piston wrist pins almost never fail, at least in automotive applications.
Wrist pin bushings failed on my Volvo engine. Diesels definitely tax the wrist pin area very hard, that's why there's bronze bushings. $13k later...
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Rockers and pushrods have a much higher failure rate even though they see far less use.
Let's talk about aftermarket solid roller v8 lifters too, I think thinner oils would help them substantially. They always seem to blow.
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If you want, I will PM the author and ask him about splash oiling and the thinner oil's. Actually, I may do this anyway since you brought up a interesting question about oiling.
I already asked him some questions on BITOG, but the last time he was on there was a while ago.
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FYI.....I was for years a ASE Master Auto Mechanic and have built many BBC blown injected on gas/alcohol drag car and boat motors. Currently my fav. toy is a 18 1/2' flatbottom, V-drive boat I am about to plug 1,800 HP into. I call it "my pleasure boat".
I have been running 50 and 60 wt Brad Penn oil since it takes alcohol dilution well. I will be rethinking things with this next engine.
Your thought's?
Be good, Jim
Excellent stuff! I think with an alcohol engine, the dilution is a very important thing to check out. It depends on your bearing clearances too I guess.
I have a question, is this engine dry sump?