From: Joe Shannon (fordpart@bellsouth.net)
Date: Sat Jul 31 2004 - 06:46:39 PDT
This goes for any important bolt, like the ones holding hitches on and such.
Horrocks, Aaron wrote:
>By design, head bolts will stretch slightly once installed, and need to be re-torqued once the engine has been warmed up. The bolts, however can only stretch so far. If they're reused several times, they will hit the limit to which they'll stretch. So, they won't fit correctly (hence "false torque readings") and may cause improper sealing or even right out fail; causing another gasket leak.
>
>Replacing the bolts, when doing all that work, is fairly cheap insurance. Spend the few bucks and make sure that head fits back on the way that it should. The service manual should show you the correct torque and torque-down pattern. You usually want to install and torque the bolts starting from the middle and then out in a radial pattern.
>
>Aaron Horrocks
>1952 M38A1
>1986 G.P. Medium
>
>
>
>
>
This archive was generated by hypermail 2.1.4 : Sat May 07 2005 - 20:33:56 PDT