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I am FINALLY installing my longtubes this weekend!
Two things I want to avoid in order of priority:
1) breaking a header bolt off into the block
2) having the headers come loose
How tight should I tighten the header bolts? Bassani directions don't say. Is there a torque spec? And if there is - I am skeptical that I could fit a torque wrench where the header bolts are.
Help me out here.
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There is a torque spec for the manifold bolts, but like you mentioned, it will be quite difficult getting a torque wrench on all the bolts/studs.
It's 25Nm or 18ft/lbs for the V-8.
I tightened mine down & did not use a torque wrench. I've gone back twice & checked for tightness & have not had any loosen up.
Answer...18 lb-ft for the nuts that go on to the studs. That's half the answer.
The other question is how much to tighten the studs that go into the block (the studs that the aforementioned nuts go on top of). Must not be very tight because those studs only have a 4mm head on them.
I also noticed the cam overs only have 89 lb-inches (not lb-ft) on them. That's not tight at all.
I'm scared to death of over-tightening a stud into the aluminum block. Would be a serious #*$%^ to strip out a header stud hole.
There is a torque spec for the manifold bolts, but like you mentioned, it will be quite difficult getting a torque wrench on all the bolts/studs.
It's 25Nm or 18ft/lbs for the V-8.
I tightened mine down & did not use a torque wrench. I've gone back twice & checked for tightness & have not had any loosen up.
Thanks for that.
Silly question here - but how tight would you say you got them? "Real tight" as in you really beared down on it? Or just "kinda tight".
you could set a torque wrench to 18 ft/lbs and try to tighten something like maybe a wheel nut..that way you could try to judge what 18 lbs feels like and go from there....i dont know if that will give you a good feel for the amount....just an idea i had
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2007 Mustang GT 5-Speed Manual
Last edited by Srt2Stang725; 01-11-2009 at 12:32 AM.
Shane I was wondering because I am going to be putting on my JBA long tubes soon if you are going to change the motor mounts like they recommend? Let me know how the install goes so I have an Idea what I'm in for.
Thanks
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header install question
