Thread: head bolts torque ?
07-25-2009, 12:33 AM #1
head bolts torque ?
has anyone figured out the torque specs in ft.lbs I know it's 40N.m then 120 degrees then another 90. Any help?
07-25-2009, 07:12 AM #2
07-25-2009, 09:11 AM #3
i need to be educated on the degree stuff.. i'd go with arp's with lube and 85 ft-lbs.
do it in steps like they are doing with the degrees, and tighten from inside to outside.
If you do it in degrees then how about a follow up and you tell US what the gauge reads after the final 90?
07-25-2009, 09:26 AM #4
07-25-2009, 10:00 AM #5
I have heard guys reuse the head bolt up to 2 times. They do a sequence of 25, 45, and 65ft. lbs.
I myself have a set of arp's on the shelf and have not installed them yet, because of some opinions of the gods. So I am not sure on them.
I do not re-use the stock bolt, but some do!
07-25-2009, 01:47 PM #6
i would never reuse a stretch bolt. I've never head of blown headgaskets on here so just do what the manual says with stockers and leave it at that. But I would buy new oem and not reuse stretched bolts.
07-26-2009, 08:21 PM #7
after the final 90 the gauge red 65lbs so i think someone was pretty close.
brp would have you buy everything new [if you read the manuals]. I measured them and was within tolerance. [live by the book, die by the book ] just because the bolts streched doesn't change the torque just the length. the torque remains the same.
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