How to measure rod bolt stretch
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How to measure rod bolt stretch
I have Lanuti pro mod rods with ARP 12 pt bolts. Launti says to tighten to .0045" - .005" bolt stretch. I bought the indicator to measre them with but I am not sure how to use it. Any Help? Thanks John.
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measure the bolt before you start. insert the bolt and tighten it to required torque spec. put the stretch gauge on the bolt and take a reading. subtract the smaller from the larger measurement. The difference is your amount of stretch. You will need to adjust based on the outcome.
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I am Thinking that the indicator that Lunati sent me is a universal type guage and the shoe that fits against the threaded end of the bolt is to large in diameter to fit in the bolt hole. I'll proably get a machinest at work make me another one. Thanks John.