exhaust flange torque
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
I can't find that either. It is a 3/8-16 thread and most all of the torques are at 25 to 30 ft/lbs for that size thread. I don't think you will go wrong with 25 to 30 ft/lbs.
Tight is nice, to tight is broke
I just found it in the assembly manual, it reads, "Nut-tighten nuts uniformly to specified torque(8 lbs minimum inspection torque after roll test)"
What ever that means.
Tight is nice, to tight is broke
I just found it in the assembly manual, it reads, "Nut-tighten nuts uniformly to specified torque(8 lbs minimum inspection torque after roll test)"
What ever that means.
Last edited by Gordonm; May 29, 2008 at 03:00 PM.
Thread Starter
Drifting
Joined: Nov 2005
Posts: 1,795
Likes: 1
Gordon
thanks for the info, i tightened them to 30 in increments of 10 all the way around so they would draw up uniformly. then after driving it i found i
had a slight leak and retightened to 30.
brought it to work today and so far so good leak wise.
so far she is running well with the heads and a lot cooler.
thanks for the info, i tightened them to 30 in increments of 10 all the way around so they would draw up uniformly. then after driving it i found i
had a slight leak and retightened to 30.
brought it to work today and so far so good leak wise.
so far she is running well with the heads and a lot cooler.
Race Director
Joined: Dec 1999
Posts: 19,610
Likes: 778
From: Forked River NJ
Gordon
thanks for the info, i tightened them to 30 in increments of 10 all the way around so they would draw up uniformly. then after driving it i found i
had a slight leak and retightened to 30.
brought it to work today and so far so good leak wise.
so far she is running well with the heads and a lot cooler.
thanks for the info, i tightened them to 30 in increments of 10 all the way around so they would draw up uniformly. then after driving it i found i
had a slight leak and retightened to 30.
brought it to work today and so far so good leak wise.
so far she is running well with the heads and a lot cooler.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,116
From: Crossville TN
FYI: The " 8 lbs. minimum after roll test " instruction means that the factory expected bolt torque to loosen on the exhaust header flange nuts after testing the car. They would recheck torque (in the tightening mode) after the drive test to make sure they didn't loosen too much. I think 25-30 ft-lbs. is about right.
