7/16 grade 8 cam bolt fine thread ?

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7/16 grade 8 cam bolt fine thread ?

Post  whitefield on February 17th 2017, 4:18 pm

I was wondering what you guys torque your cam gear bolt to ? bullet solid roller cam with 7/16 x 20 fine thread grade 8. Thanks
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  Scott Foxwell on February 17th 2017, 4:58 pm

Dry, plated, grade 8 7/16-20 bolt is 58#. I'd say with a little oil 50-55 is plenty.

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Re: 7/16 grade 8 cam bolt fine thread ?

Post  rmcomprandy on February 17th 2017, 9:39 pm

I normally use an alloy rod bolt which torques to 80 pounds.  "Double Pinning" an aggressive roller cam can use less.

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Re: 7/16 grade 8 cam bolt fine thread ?

Post  whitefield on February 17th 2017, 9:54 pm

It is single pin. I went 60ftlbs with red loc tite . Should I go 80 ftlbs ?
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  FalconEh on February 17th 2017, 10:36 pm

whitefield wrote:It is single pin. I went 60ftlbs with red loc tite . Should I go 80 ftlbs ?

Have you used "red loc-tite" before on a cam and removed? I have found that red loc-tite usually lays a hurt on the fastener or the thread when removed, I usually use the blue, talking the color of the liquid sealer not the tube it comes in.
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  whitefield on February 17th 2017, 10:55 pm

FalconEh wrote:
whitefield wrote:It is single pin. I went 60ftlbs with red loc tite . Should I go 80 ftlbs ?

Have you used "red loc-tite" before on a cam and removed? I have found that red loc-tite usually lays a hurt on the fastener or the thread when removed, I usually use the blue, talking the color of the liquid sealer not the tube it comes in.

Yeah I use loc tite on a,lot of fasteners. I have a loc tite rep that comes and talkes with my students. I take a little butane torch and heat it up and it comes right out.
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  FalconEh on February 17th 2017, 11:37 pm

whitefield wrote:
FalconEh wrote:
whitefield wrote:It is single pin. I went 60ftlbs with red loc tite . Should I go 80 ftlbs ?

Have you used "red loc-tite" before on a cam and removed? I have found that red loc-tite usually lays a hurt on the fastener or the thread when removed, I usually use the blue, talking the color of the liquid sealer not the tube it comes in.

Yeah I use loc tite on a,lot of fasteners. I have  a loc tite rep that comes and talkes with my students. I take a little butane torch and heat it up and  it comes right out.

Thanks Whitey, I have pulled up a desk...good tip.
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  IDT-572 on February 21st 2017, 10:20 pm

A good thick flat washer is a must also. A chevy harmonic balancer washer works great.

I use a grade 10 SHCS torqued to 75 ft lbs.
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Re: 7/16 grade 8 cam bolt fine thread ?

Post  Lem Evans on February 22nd 2017, 10:48 am

"A chevy harmonic balancer washer works great."
SBC


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Re: 7/16 grade 8 cam bolt fine thread ?

Post  rmcomprandy on February 22nd 2017, 12:11 pm

Lem Evans wrote:"A chevy harmonic balancer washer works great."
SBC


I buy 5 at a time ... and use the ARP hardened alloy, .275" thick washer #200-8717.

The ones directly from Chevrolet and regular parts houses are not hardened but, do work well most of the time.

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Re: 7/16 grade 8 cam bolt fine thread ?

Post  Lem Evans on February 22nd 2017, 12:58 pm

I get'em a dozen at a time from an outfit in Cali .312" thick looks like this:


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Re: 7/16 grade 8 cam bolt fine thread ?

Post  norm on February 22nd 2017, 9:49 pm

I got some here-

https://www.mcmaster.com/#hardened-washers/=16h091d
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