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fantom73088

10+ Year Contributor
36
2
Aug 26, 2010
canajoharie, New York
I have recently rebuilt my engine it has 15,000 miles on it. Its a 7bolt with stock rods. 2 weeks ago I blew a head gasket (stock head gasket) and replaced it with a 4layer mitsu gasket with arp head studs while it was apart i noticed that there was play in the number 3 piston rod assembly so i pulled it apart and upon further inspection found a bad rod bearing so i ordered a new set. brought all of my rods to the machine shop to have them honed out because the clearance was way to small. my rods already had arp bolts in them. I put every thing back together drove the car this week and pulled the valve cover and oil pan to check the torque on all head studs and rod bolts. i found that all the rod bolts clicked at 37ft. lbs. as they are suppose to but when checking rod 2 they did not click so i pulled the nuts off and molly lubed them and started the torque process again starting at 8ft.lbs then 17, then 37ftlbs but could not get the 37ft.lbs to click so tried 1 more time and one of the bolts broke. now all that story for this question i just put everything back in it last weekend and really do not want to pull everything apart again so i am thinking about putting one old bearing halve in (so i do not deform a good one) and tapping out the old stud and pulling the new one back through with the nut to make it seat. then plastigauge to check the clearance. I know this isnt the proper way to do it but don't really have the time or money to pull it all apart again.

What are your thoughts?
 
So your whole problem w/ that rod ended up being just the stud. The reason for your torque wrench not clicking at 37ft. lbs. was because of a streching stud. You get so far on the ft.lb. and it started to strech not alowing you to reach final torq. I dont see any thing wrong w/ driving the stud out, and sucking another stud in. I would use the old bearing to make sure that you can reach the final torq., then install the new bearing, plastigage it, and call it good. And for extra added insurence to final torq. give it another 2 ft.lb. if you feel safe enough. just sayin...
You should be fine after you replace that. good luck!:thumb:
 
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