head bolt torquing question
Thread Starter
3rd Gear Member
Joined: Sep 2008
Posts: 503
head bolt torquing question
hi
according to my manual (haynes, crappy i hear), for a 95gt step 1 is 25-35lb, step 2 is 45-55lb, step 3 is a quarter turn (90degrees)
so, for step 2 i went to 55.
for step 3, i couldnt move a quarter turn. lets say i could go about 20-30 degrees.
im guess this is fine because if i only went to 45lbs during step 2, i could have easily went another 90 degrees during step 3.
any flaws with this thinking?
thanks
according to my manual (haynes, crappy i hear), for a 95gt step 1 is 25-35lb, step 2 is 45-55lb, step 3 is a quarter turn (90degrees)
so, for step 2 i went to 55.
for step 3, i couldnt move a quarter turn. lets say i could go about 20-30 degrees.
im guess this is fine because if i only went to 45lbs during step 2, i could have easily went another 90 degrees during step 3.
any flaws with this thinking?
thanks
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
Are you trying to reuse your old ones or using new ones? Are you using OEM bolts or ARP bolts/studs?
If you're trying to reuse the old ones, that's the problem. They stretch when you turn them 90 degrees. If you try to reuse them they often times won't stretch more or will break during that last step. That's why it's recommend to use new head bolts whenever you do head work.
If you are using ARP brand they have their own specs you should be following, not what the service manual says. Service manual stuff is based on OEM parts.
If you're trying to reuse the old ones, that's the problem. They stretch when you turn them 90 degrees. If you try to reuse them they often times won't stretch more or will break during that last step. That's why it's recommend to use new head bolts whenever you do head work.
If you are using ARP brand they have their own specs you should be following, not what the service manual says. Service manual stuff is based on OEM parts.
Thread Starter
3rd Gear Member
Joined: Sep 2008
Posts: 503
Are you trying to reuse your old ones or using new ones? Are you using OEM bolts or ARP bolts/studs?
If you're trying to reuse the old ones, that's the problem. They stretch when you turn them 90 degrees. If you try to reuse them they often times won't stretch more or will break during that last step. That's why it's recommend to use new head bolts whenever you do head work.
If you are using ARP brand they have their own specs you should be following, not what the service manual says. Service manual stuff is based on OEM parts.
If you're trying to reuse the old ones, that's the problem. They stretch when you turn them 90 degrees. If you try to reuse them they often times won't stretch more or will break during that last step. That's why it's recommend to use new head bolts whenever you do head work.
If you are using ARP brand they have their own specs you should be following, not what the service manual says. Service manual stuff is based on OEM parts.
Gentleman's Relish
Joined: Feb 2005
Posts: 13,189
From: AZ
Sorry, I don't but I see you have a thread open for that specific question so...
https://mustangforums.com/forum/5-0l...arp-bolts.html
https://mustangforums.com/forum/5-0l...arp-bolts.html
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