Bushing the Comp Cams Pro Magnum Rockers
#1328937
10/30/12 10:22 PM
10/30/12 10:22 PM
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Joined: Apr 2004
Posts: 323 Raleigh, NC
Meangreen68
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These big block rockers are brand new from 2004. 1321-16. I'd like to get them bushed. I want to avoid any problems relating to galling. The shafts that came with the rockers have drilled oil supply holes, no banana grooves. Does Dan at Performance Only bush these rockers? If not, any suggestions? Thanks
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: Meangreen68]
#1328944
10/31/12 12:48 AM
10/31/12 12:48 AM
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Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
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Quote:
I want to distance myself from this...
What pressure are your springs open and closed? What they of cam are you going to use them with ?
I believe that picture you attached is from someone that used them over their rated value .
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: Meangreen68]
#1328949
10/31/12 03:12 AM
10/31/12 03:12 AM
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Joined: Jan 2003
Posts: 27,559 So Cal
autoxcuda
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Quote:
In another thread about the newer "Ultra Pros" it was mentioned that Comp Cams uses a "narrow rolled Teflon coated bushing."
I'm going to call Comp Cams tomorrow to see if they'll supply me the bushings?
Can't hurt to ask.
Yes. The new one I bought last year have bronze sleeves in them. The centers are open to allow lots of oiling. No need for bananna groves.
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: 64Post]
#1328951
10/31/12 12:21 PM
10/31/12 12:21 PM
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Joined: Apr 2004
Posts: 323 Raleigh, NC
Meangreen68
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I spoke with Comp Cams moments ago (800-999-0853). They aren't willing to help. No bushings, a trade-in, or a credit towards the purchase of a new set. They did say if they fail, they'll give me a new set, excluding labor
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: Meangreen68]
#1328952
10/31/12 07:15 PM
10/31/12 07:15 PM
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Joined: Jan 2003
Posts: 75,282 A gulag near you.
JohnRR
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Quote:
I spoke with Comp Cams moments ago (800-999-0853).
They aren't willing to help.
No bushings, a trade-in, or a credit towards the purchase of a new set.
They did say if they fail, they'll give me a new set, excluding labor
Well if they fail you'll get a bushed set in return.
Is your cam a soild Flat tappet , Hyd. flat tappet, solid Roller, or a Hyd. roller ?
Should be easy to find the spring specs by looking up your springs on the manufacturer website .
Unless you are running a solid roller I don't think you'll have an issue , the picture you posted above was from someone using a solid roller , if solid roller is your cam choice you really want to run a set of Harland Sharps .
I feel that hughes shaft you added above has too much critical load area removed , a bananna groove would be better and easy to do with the shafts you have if that are not grooved.
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: autoxcuda]
#1328953
10/31/12 07:27 PM
10/31/12 07:27 PM
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Joined: Apr 2004
Posts: 323 Raleigh, NC
Meangreen68
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Thanks Autoxcuda for that photo of your Ultra Pro rockers. Looking at the rocker in your right hand, that looks like a metal-backed sleeve bushing, sintered bronze and PTFE. Notice the parting line in the bearing. They look these: http://www.asbbearings.com/steel_backed_bearings.htmlAnd John, you're probably right about those Hughes shafts. Light banana grooves in my shafts is all I probably need to do. It's a hydraulic cam.
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: ahy]
#1328955
11/01/12 04:59 PM
11/01/12 04:59 PM
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Joined: Apr 2004
Posts: 323 Raleigh, NC
Meangreen68
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I spoke with Engle Racing Cams today. The recommended spring pressures of my K60/62H cam would be 130-145 closed and 300-320 open. I read the invoice for the engine build and the original valve springs in the Edelbrock heads were swapped out for 1.560" double springs/cups and chromoly dual spring retainers. I'm going to have the Comp Cams rocker shafts "banana" grooved, add ARP studs to the aluminum hold-downs, and run 'em. Thanks guys
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Re: Bushing the Comp Cams Pro Magnum Rockers
[Re: Meangreen68]
#1328956
11/01/12 05:28 PM
11/01/12 05:28 PM
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Joined: Aug 2003
Posts: 8,716 Baltimore/Denver
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Quote:
I spoke with Engle Racing Cams today.
The recommended spring pressures of my K60/62H cam would be 130-145 closed and 300-320 open.
I read the invoice for the engine build and the original Edelbrock head's valve springs were swapped out for 1.560" double springs/cups and chromoly dual spring retainers.
I'm going to have the Comp Cams rocker shafts "banana" grooved, add ARP studs to the aluminum hold-downs, and run 'em.
Thanks guys
That’s very close to what I ran. You should be fine.
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