Kooks Header Torque
Thread Starter
Pro
Joined: May 2006
Posts: 583
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From: Fayetteville North Carolina
St. Jude Donor '17-'18
Kooks Header Torque
Installing my new Kooks Headers today and was wondering if I should torque the headers to the head using the recommended torque from Kooks 28-32 ft lbs. Or use the manufacturers torque specs of 18 ft. lbs.
Thoughts?
Thanks,
Mike
Thoughts?
Thanks,
Mike
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
I'd go with 18ft lbs, what GM engineering recommends for aluminum heads with standard grade bolts. If Kooks provides good gaskets and flat flanges I see no reason to increase the torque from GM.
If they're supplying higher grade bolts then perhaps that spec is OK.
If they're supplying higher grade bolts then perhaps that spec is OK.
Last edited by grantv; Oct 3, 2016 at 12:42 AM.
Team Owner
Joined: May 2001
Posts: 87,294
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From: Western NY
I still wouldn't exceed the GM spec, because you're relying on the strength of the threads in an aluminum head, more than the shear strength of the bolt, in my opinion.
Le Mans Master
Joined: Sep 2014
Posts: 5,278
Likes: 539
From: Kelowna BC
