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  1. #1

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    ARP Bolts: Rod Bolts/Rocker Bolts Torque specs? Help!

    I've elected to go with ARP hardware on my next few motor rebuilds, but am unable to find anything concrete on torque specs. Obviously since they don't stretch, I can't go by the procedures in the manual. I was hoping someone that has some experience with using ARP hardware could chime in. I can make an educated guess, and get close, but I'd really like to hear from other people who have/are using ARP hardware. I found info on what to torque the head bolts to, but nothing for using ARP rod bolts,rocker bolts, etc... Any help and or advice is appreciated, thanks as always guys!


  2. #2
    Rompe21's Avatar
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    Quote Originally Posted by boostaholic View Post
    I've elected to go with ARP hardware on my next few motor rebuilds, but am unable to find anything concrete on torque specs. Obviously since they don't stretch, I can't go by the procedures in the manual. I was hoping someone that has some experience with using ARP hardware could chime in. I can make an educated guess, and get close, but I'd really like to hear from other people who have/are using ARP hardware. I found info on what to torque the head bolts to, but nothing for using ARP rod bolts,rocker bolts, etc... Any help and or advice is appreciated, thanks as always guys!
    When I build my ski
    Arp Rod 50lb
    Arp Rocker bolts @ 25lb
    Arp Head Stud @ 90lb
    Arp Main Stud @ 65lb
    Arp Flywheel bolts @ 30lb

  3. #3
    Quote Originally Posted by Rompe21 View Post
    When I build my ski
    Arp Rod 50lb
    Arp Rocker bolts @ 25lb
    Arp Head Stud @ 90lb
    Arp Main Stud @ 65lb
    Arp Flywheel bolts @ 30lb

    Those specs sound about right to me.That is the problem I've had with ARP.It seems they never could tell you the torque spec.I was told the head studs were 70lb and that is why so many lose the head gasket with ARP studs.

  4. #4
    dhoad's Avatar
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    Quote Originally Posted by mitch411RXP View Post
    Those specs sound about right to me.That is the problem I've had with ARP.It seems they never could tell you the torque spec.I was told the head studs were 70lb and that is why so many lose the head gasket with ARP studs.
    once you install the head bolts are you not supposed to retorque them after a few hours use, and then check them again after several heat cycles that way you maintain the clamping force of the bolt/stud?
    As an example, when I installed my rod bolts I was told to torque them to 25 lbs, release the bolt tension, retorque 35 lbs, release and then torque a final time to 50 lbs run them safely.
    Last edited by dhoad; 04-13-2009 at 02:16 PM.

  5. #5
    thompsdw's Avatar
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    Any more information on this? I am interested as well.

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