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| Matatk | Summit Roller Rockers | ||
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I saw Summit has these on sale:
http://www.summitracing.com/parts/SUM-G6938-16/ I need to pick up roller rockers for my build. Heads are 3/8 stud, non self aligning (has guideplates), centerbolt vcs. I can hardly find any information about them. Some guys claim they are made by scorpion, I can't verify that. Anyone running these or have any personal experience with them? Matthew |
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Posted on: 2010/2/19 2:33
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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| flyboy | Re: Summit Roller Rockers | ||
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Those rockers are too pretty to hide underneath valve covers.
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Posted on: 2010/2/19 3:15
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'91coupe, LT4Hotcam, some other stuff. If it's too loud, you're too old. "He works on old cars, then junks 'em" |
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| pr0zac | Re: Summit Roller Rockers | ||
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those look just like the set of scorpions i had on my trans am.
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Posted on: 2010/2/19 6:05
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96 lt4. 357ci, 11:1, LE 226/232, LE2 LT4 heads, ported LT4 intake, EM Gladiator44, EM LT's, stock exhaust, NX kit. |
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| pr0zac | Re: Summit Roller Rockers | ||
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Posted on: 2010/2/19 6:08
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96 lt4. 357ci, 11:1, LE 226/232, LE2 LT4 heads, ported LT4 intake, EM Gladiator44, EM LT's, stock exhaust, NX kit. |
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| anesthes | Re: Summit Roller Rockers | ||
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Quote:
I ran them for a couple years on my C4. I don't think they are scorpion, but they look like every other set of chinese rockers: http://cgi.ebay.com/ebaymotors/SBC-CH ... uckQ5fPartsQ5fAccessories A number of years ago, I ran these on a supercharged motor: http://cgi.ebay.com/ebaymotors/1-6-3- ... uckQ5fPartsQ5fAccessories I had some good luck with them. The only concern is the weight of the rocker might be a bit more than the valve spring can handle on a high rpm application. I shifted the car at 6k.. Not sure how they would be at 6500. My biggest complaint with any of them is the poly locks back off. No matter how hard you crank down that allen, it seems sometimes they just back off. Over the years I've had a few pushrods, on different motors, get bent. -- Joe |
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Posted on: 2010/2/19 11:28
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| flyboy | Re: Summit Roller Rockers | ||
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Now I'm concerned. My mechanic said that after tightening the set screw he gives a final "bump" to the nut with the wrench. |
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Posted on: 2010/2/19 13:45
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| anesthes | Re: Summit Roller Rockers | ||
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Quote:
Me too.. I think it depends on the polylock. I've had them back off no matter how tight I made 'em.. -- Joe |
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Posted on: 2010/2/19 13:56
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| Aboatguy | Re: Summit Roller Rockers | ||
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I've been running CC promags with CC poly locks on ARP 7/16" studs and I've never had a polylock issue
Like the mechanic I use the bump method to ensure they stay put. |
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Posted on: 2010/2/20 0:15
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| dan0617 | Re: Summit Roller Rockers | ||
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I ran Summit self aligning roller rockers for a year and had no problems at all with them. I actually didn't know to remove the drip tabs from the valve covers and they got caught in the rocker slot between the top of the rocker and the nut. Bent about all my pushrods and my rocker studs and galled up the rockers. I replaced the studs and the pushrods but used the rockers. They worked perfectly.
I never had one back off but I do give an extra little tightening with the wrench after tightening the lock with the allen wrench. |
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Posted on: 2010/2/20 18:15
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ยด89 Vert, 383, 230/236 cam, AFR 195's, LT Headers, HSR intake, 2800 stall, Zex 200 shot, ET Street Radials, tune by me. Runs were with D36 3.07's. On spray, 10.55 @ 132.78, 1.55 60 ft. On motor, 12.08 @ 113.15, 1.66 60 ft. |
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| Matatk | Re: Summit Roller Rockers | ||
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Thanks for the replies, guys.
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Posted on: 2010/2/20 22:50
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2002 EBM convertible, Magnusson supercharger, cam, headers, etc. 1989 Corvette...RIP |
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