ARP Crank Studs for 318LA

1969340dart said

`I was reading an article where by using a stud kit it helps decrease crankshaft deflection due to the fact that it holds the main cap better in position than a regular bolt. I have not heard of having to have it linebored because you use a stud kit.I am actually having an engine built and am using a stud kit so I wil talk to the machinist to find out more information on lineboring. Glad to run across this topic. Any more surprises I may run into!

Bobby

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The studs Boddy put a lot of presure on the caps. They need to be torques 3 times to the proper setting with the crank out, then checked at a good machine shop or withthe proper tools by an experianced person. Most times they will move enough you have to re-align the caps to center again. But when this is done some metal is removed but only a minimal amount or you end up with more weakness.


Does this make sense? Sometimes you get luck and the bore is ok, ut it is most times not the case from what I was told. I have even seen this happen with bolts too.

good luck with it!