91 L98 ARP Intake Manifold Bolts
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,012
Likes: 62
From: Houston Tx
91 L98 ARP Intake Manifold Bolts
Hi everyone,
Has anyone here used ARP intake manifold bolts on their L98 engine with OE aluminum heads? The ones ARP recommended to me are #134-2101.
I was torquing them down on my engine to the 35ft lb spec recommended in the GM service manual and they absolutely ripped the treads out of one of my mounting holes. I suppose this was after successfully torquing about 1/2 the bolts down to spec.
Has anyone else had this problem.
Has anyone here used ARP intake manifold bolts on their L98 engine with OE aluminum heads? The ones ARP recommended to me are #134-2101.
I was torquing them down on my engine to the 35ft lb spec recommended in the GM service manual and they absolutely ripped the treads out of one of my mounting holes. I suppose this was after successfully torquing about 1/2 the bolts down to spec.
Has anyone else had this problem.
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,012
Likes: 62
From: Houston Tx
No, not at all - everything seemed normal until it didn't. I'm planning to try to fix it by using a steel insert. I may just put steel inserts in all of intake manifold bolt holes on the heads. I don't trust the aluminum treads at all.
Thread Starter
Burning Brakes
Joined: Sep 2002
Posts: 1,012
Likes: 62
From: Houston Tx
The heads just came out of the engine shop a few months ago and I cleaned the threads twice over before trying to mount the intake.
