Toymods Car Club Inc: Tech & Conversions => Rebuilding Bottom End

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allencr
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Location:
tallahassee FL usOFa
Registered:
May 2002

Re: Rebuilding Bottom End - need some advice!	Sat, 01 October 2005 03:57

i don't know what a 3S is - a 4 main straight 6 or a V6? there are no 4 main 4's. either way, its just using the block as a very steady & solid & precise set of V-blocks for holding and rotating the crank to check its runout. then it is also used as a very solid piece to hold the crank if it has to be bent back into shape - arrow straight. v-block are just 2 points to rotate on and for that process, the condition of the block is irrelevant, unless it's in 2 pieces & won't hold still! infact it'll be better then any machine shop because the old bearing you use are sure to be much smoother, softer and wider then the scuffed up v-blocks at the machine shop. if the crank is going to be ground, then their stuff is ok, but having to polish up scuff marks they've possibly made on your nice mains, is really unnecessary. yes, 2 bearings in the cap, nothing on the block, else how can it be pushed straight, since it'll have to be bent way past straight so it will spring back straight. sure they can be cut. i don't believe that "stronger surface" shit! the reliefs are probably fine cause these non-interference things have loads of space. they're usually quite thick, and how do you think the factory does it. if you say you want to keep it a non-interference with whatever cam, then I can't waste time with this stuff! ******** also, measure the piston diameter, top & bottom of skirt at its widest point, which'll be 90 from the pin. i've never heard of only at the pin, and you've gotta know that it's parallel! [Updated on: Sat, 01 October 2005 04:19] [Report message to a moderator]

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