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well, er started putting the iron bl;ock 421 together, and all was going fine, the lunati 4.125 crank was sweet, the lunati 6.126 billet rods, were nice, and the diamond pistons were sweet as well, until the #8. the thing was hitting the reluctor wheel, which i thought had been addressed through all prior conversations with chris. after looking at the rest of the pistons, all but 2, number 4 and 5, had less than 5/1oooths clearance between the piston skirt and the crank throws. any one have any insight into this situation? i guess the dremel is coming out of the closet, and some notching about to take place, and the a complete teardown and re balance. also, where is this oil by pass plug a few posts ago located, as i am trying to take all precautions. joe.
No offence, but if you have to ask these questions on the forum, I would let an engine builder assemble your shortblock. There are a lot of tricks that should be known during assembly, especially with a 4.125" stroke and long rods.
I would just hate to see you assemble it and then something go wrong and ruin all your expensive forged lunati stuff.
no offense taken, as a matter of fact, i have built several lt1/lt4 motors in the past, the gen III is a new animal for me, and yes, i probably would have gotten a so called engine builder to build it, had it not have been three arms and 4 legs to have it done. nonetheless, i thought that was the purpose of this forum, to exchange information and assist fello covette enthusiasts, so if you are in the know of these so called tricks, please grace me with the knowledge and your expertise if you dont mind. thanks for your input, joe
I can kind of see why some people are looking to build their own motors. A lot of professional engine builders are starting to take a long time to build a motor. Sorry, but I do not see any reason why it would take 5 to 6 months to build a long block :skep: I have seen and heard them give all kinds of excuses like waiting for parts, etc. I think most of that is BS since you can order a crank from Lunati and have it shipped the next day.
I wish I knew half of these tricks but unfortunately I do not, as I have never actually assembled an LS1 motor. I have watched certain stages of it being done many times however and am familiar with the parts.
I do agree, that this forum is for the sharing of information and there is nothing wrong with your post at all. I was not sure of your engine building experience and don't want you to have big problems down the road from incorrect assembly.