how to change the rod bolts?
Jul 2, 2007, 08:01 PM
#3
When it comes to rod bolts, you shouldn't measure "tightness" by "torque." Torque can vary depending on friction, etc. The only real way to know how much clamping force is applied is to measure how much the rod bolt stretches. This can be done with a stretch gauge or even better, a pin micrometer. The rod bolt manufacturer can provide you with the proper stretch measurement for your application.
Feb 5, 2008, 08:06 AM
#5
Hi SeanC,
What stretch gauge you used to work on the Evo? Any links?
What stretch gauge you used to work on the Evo? Any links?
When it comes to rod bolts, you shouldn't measure "tightness" by "torque." Torque can vary depending on friction, etc. The only real way to know how much clamping force is applied is to measure how much the rod bolt stretches. This can be done with a stretch gauge or even better, a pin micrometer. The rod bolt manufacturer can provide you with the proper stretch measurement for your application.
Feb 29, 2008, 12:13 AM
#7
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i just did mine 2 days ago, and it actually says on the instructions with the arp rod bolts if u dont have a stretch gauge to torques them to 37 ft lbs, loosen and retorque 3 times.
its pretty easy... remove starter, downpipe, oil pan, and oil baffle. then rotate the carnk to get to each bolt. press them in by hand as far as you can then put the nut on to pull it the rest of th way through. then torque to spec.....
its pretty easy... remove starter, downpipe, oil pan, and oil baffle. then rotate the carnk to get to each bolt. press them in by hand as far as you can then put the nut on to pull it the rest of th way through. then torque to spec.....
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Feb 29, 2008, 12:19 AM
#8
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Thanks a lot Dapper Dan. How long did it take you? If this upgrade is feasible enough, I may do it along with some valvesprings+retainers to cover all possibilities.
Mar 9, 2008, 05:31 PM
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Mar 9, 2008, 06:25 PM
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+1,000,000 (IMO)
but many people have done this with no adverse affects. and the service manual gives you tolerances saying that it can be done.
but if it were me, i would just replace them (with bearings as well.) I mean if you really are concerned about your rods why not?
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