Re: Engine rebuild, help!

Posted by HH56 On 2022/12/4 20:11:33

Any chance the bearing caps got switched or did you swap one from another engine and the block needs to be line bored? You said the clearances were OK in the offending spots but is there any chance perhaps a wrong bearing half shell somehow got put in a box or mixed in the set? Is there any kind of debris under a bearing shell that would act as a shim? No suggestions as to the clunk other than possibly endplay is excessive and crank is shifting while you turn it or to look carefully and see if a counterweight has any new shiny spots from hitting something. If the oil fill tube is inserted incorrectly a counterweight can hit the baffle but think that would be a more metallic tinny sound rather than a clunk.