new ARP head bolts...confused about how to torque properly!!!!! - Team Camaro Tech
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post #1 of 5 (permalink) Old Feb 14th, 07, 03:58 PM Thread Starter
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new ARP head bolts...confused about how to torque properly!!!!!

Never mind......just got off the phone with ARP and they were VERY helpful. I am now a torquing expert!!

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post #2 of 5 (permalink) Old Feb 14th, 07, 06:05 PM
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Re: new ARP head bolts...confused about how to torque properly!!!!!

Enlighten us so we may be in the same boat.

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post #3 of 5 (permalink) Old Feb 14th, 07, 07:24 PM Thread Starter
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Re: new ARP head bolts...confused about how to torque properly!!!!!

This is straight from ARP: What's very important is thread sealant. I was told to use either permatex or locktight (sp?) thread sealer with TEFLON!! Chase threads in block so they are clean. Use a generous amount of sealer on all bolt whether they are in a water jacket or not. This way your are getting an even torque with the same lube. Whether cast or aluminum, you should use their washers because they are a hardened material and it gives the bolt head something to glide on rather than the head. It also make the degree angle of the surface the bolt will contact to be true. Use a dab of the teflon sealer between the washer and the bolt head (not the cylinder head). This will help the accuracy of your torque. When running your torque sequence, go up in intervals of 15-20lbs. Once torqued, run through a heat cycle or two. They said the time it takes to break in a cam will work great! Then you need to re-torque by loosening ONE bolt at a time and torque in the same sequence (pattern) you used the first time. Do not loosen them all and start over (a no-brainer for most, but not me!!). Head bolts don't need to be stretched in the same manner that rod bolts do. He said those will usually need to be torqued and re-torqued 5+ times. Not ness. with head bolts. Hope this helps!! Unlike calling Holley tech.....these guys are very friendly and will make sure you "got it" before they hang up.
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post #4 of 5 (permalink) Old Feb 15th, 07, 05:20 AM
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Re: new ARP head bolts...confused about how to torque properly!!!!!

Thanks for the instructions. Does one torque to the car manufacturer specs, or to ARP's specs?

A note: be careful on chasing threads. Using a tap will generally remove material and the bolt will become looser. All taps aren't produced the same. A thread chaser is better. I generally clean the OE threads with Brakleen and a stiff bristle brush in a drill motor.

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post #5 of 5 (permalink) Old Feb 15th, 07, 08:38 AM Thread Starter
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Re: new ARP head bolts...confused about how to torque properly!!!!!

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Originally Posted by Everett#2390 View Post
Thanks for the instructions. Does one torque to the car manufacturer specs, or to ARP's specs?

A note: be careful on chasing threads. Using a tap will generally remove material and the bolt will become looser. All taps aren't produced the same. A thread chaser is better. I generally clean the OE threads with Brakleen and a stiff bristle brush in a drill motor.
Great question....only torque to the manufacturer's specs when using the stock stuff. Always use ARP's specs. In the case of head bolts, 65 lbs.

Yes....a chaser not a tap.
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