ARP Headbolts needs to be Re Torque, yes or no
Jun 22, 2005, 09:05 AM
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ARP Headbolts needs to be Re Torque, yes or no
I have been reading about it, but there seems to be different opinions, what I need to know is, if they need to be re torque after a certain period of time.
Jun 22, 2005, 10:19 AM
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I always remove my valve cover and retorque them after the first or second good heatcycle. It is rare that they aren't always still to spec but I've had it happen on a few once or twice. Better safe than sorry.
Jun 22, 2005, 10:22 AM
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From what I understand, yes you need to retorque them after the first or second heat cycle. I know someone who didn't and he blew his head gasket first time down the 1/4, exactly 4 days after his motor was finished.
Jun 22, 2005, 10:32 AM
#4
I don't feel the ARP's need to be re-torqued. We never do it and never see a problem. The boost levels around here tend to get pretty high
David Buschur
www.buschurracing.com
David Buschur
www.buschurracing.com
Jun 22, 2005, 10:46 AM
#6
So what's the initial torque that is require inorder to avoid a re-torque? Also how much boost before arp head studs are required? Some people run 26-27 with stock bolts with no problem and some recommend changing at 25 psi? Some says the one-by-one method is a no no. too many somes 
Last edited by GOKOU; Jun 22, 2005 at 10:53 AM.
Jun 22, 2005, 10:49 AM
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Well its more a security thing i seen people boost 25 psi on stock with no problem but i changed mine so in the long run they wont strecth i would do it if your getting cams installed its a quick install i would rec. it if your running alky
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Jun 22, 2005, 10:50 AM
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For the amount of time it takes to pop off of a valve cover, I feel that it is work double checking after the head has been hot. I just categorize it along with things like building a boost leak tester and testing for leaks. Being thorough makes a difference to me. But that's just my opinion..........
Jun 22, 2005, 12:49 PM
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I very much everyone reads this https://www.evolutionm.net/forums/sh...ad.php?t=67880
Jun 22, 2005, 01:50 PM
#13
Originally Posted by bolsen
I very much everyone reads this https://www.evolutionm.net/forums/sh...ad.php?t=67880
Some say okay some said not okay. Some said 85 some said 75.It's like asking the audience on Million dollar show. The ones who don't know place their vote anyway
Jun 23, 2005, 10:14 AM
#14
Originally Posted by GOKOU
So what's the initial torque that is require inorder to avoid a re-torque? Also how much boost before arp head studs are required? Some people run 26-27 with stock bolts with no problem and some recommend changing at 25 psi? Some says the one-by-one method is a no no. too many somes
So I guess 85 is the magic number????
Jun 23, 2005, 10:22 AM
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I did mine to ~75 pounds on install. Then, after a few days, opened that valve cover back up and torqued them down to ~85 pounds. There was one that had backed out a tiny bit and was a little under torque (~68 pounds). I've since checked them again and all were fine.
Good luck!
Good luck!