Comp Cams Ultra Pro Magnum rocker arm review
#1
Comp Cams Ultra Pro Magnum rocker arm review
i recently broke a comp cams red aluminum rocker so i decided to upgrade to the ultra pro mags. it made a world of difference.
just by looking at it, u can tell its a stout design. the red rockers had pressed in bearing where as the ultras have a snap ring holding each bearing in.
when installed, they are the quietest rocker iv ever used. i cant hear any valve train noise. i am extremly impressed with these rockers.
just by looking at it, u can tell its a stout design. the red rockers had pressed in bearing where as the ultras have a snap ring holding each bearing in.
when installed, they are the quietest rocker iv ever used. i cant hear any valve train noise. i am extremly impressed with these rockers.
#4
Village Troll
iTrader: (2)
Crane Gold Racing aluminum rockers here. They've been pressing on 250lbs of seat pressure and 500lbs with the valves open up to 7200rpm for the last 3 years. Is this a Bert law of ridiculousness that you've held on to.
#6
TECH Veteran
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Just knowing what I know, I feel better with the Pro-mag knowing the chromeoly steel is stronger than aluminum..
Last edited by wrd1972; 08-17-2010 at 10:27 AM.
#12
iv had pro mags on my last motor. these new ultra magnums seem much better. it kinda looks like comp is phasing out pro mags and replacing them with ultras. if u check jegs, they dont have a big selection of pro mags anymore but the selection of ultras is huge
#16
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#17
TECH Apprentice
#18
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Join Date: Jun 2002
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I have a new set of pro mags. Can't hear a thing out of them. Very quiet. I bought them for longevity on a street/strip engine. I was afraid aluminum would suffer from metal fatigue over time and break. True or not, I prefer the peace of mind.
#20
TECH Fanatic
iTrader: (1)
A buddy of mine broke a Crane aluminum rocker just a week ago. The broken area showed horrible porosity.........the kind I would not expect to see even in a cheap Chinese casting! If you had that kind of porosity in a steel rocker, I'd expect it to fail eventually too. It just goes to show, there are quality escapes everywhere.......you just have to go where you feel your odds are best.
Running ProMags here.
Running ProMags here.