Quote:
Originally Posted by tdott
Great points and very helpful tips!
Someone can correct me if I am wrong, but I believe this tool is meant to measure the stretch of the bolt when it is torqued into the rod and the rod allows for it (S65 rods do not, rod bolt holes do not go all the way through. Also I don't think measuring the bolt for stretch after it is removed is going to be accurate.
I also don't believe it is possible to measure in an S65 without the rod removed from the block even if the rods allowed for it as they sit too far into the block unlike others which protrude below the block at BDC.
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You are correct in that you cannot measure bolt stretch on the S65 when installed, but ARP still gives you a maximum stretch allowance of the bolt that once exceeded you must use a new bolt. You measure the length of the bolt before its first use and log its stretch on every subsequent cycle. Once it has been stretched beyond its limit it is considered defunct and must be discarded.
This is really only practical if you intend to R&R these bolts several times.