Roller Tip Rockers ?? - Team Camaro Tech
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post #1 of 12 (permalink) Old Jan 29th, 08, 02:06 PM Thread Starter
 
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Roller Tip Rockers ??

My freshly built 454 has the original GM rocker arms. Those rockers have 106,000+ miles on them. There is ONE that I cannot get to stop ticking and it is visually slightly off center of the valve top.

Comp "says" 15 to 30 more HP with their $139.00 Roller Rocker Arms. That sounds like a small price for "that much" improvement.

This is a Hyd flat tappet Comp 260

I guess I am asking.....

Is there really an advantage to roller rocker arms?
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post #2 of 12 (permalink) Old Jan 29th, 08, 03:33 PM
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Re: Roller Tip Rockers ??

Full roller rockers would be better and any gain you would see would be from a more accurate ratio Vs. stock factory stamped steel (that aren't always accurate)

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post #3 of 12 (permalink) Old Jan 29th, 08, 03:34 PM
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Re: Roller Tip Rockers ??

I love my roller tips!!!

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post #4 of 12 (permalink) Old Jan 29th, 08, 07:13 PM
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Re: Roller Tip Rockers ??

I wouldn't waste my money on roller tips. I would just get full rollers for a little more. Less than 2 bills for them on e bay.

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post #5 of 12 (permalink) Old Jan 29th, 08, 09:35 PM
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Re: Roller Tip Rockers ??

I forget exactly but I think Full Rollers while worth more HP also decrease Oil temps by 30 or so degrees over normal rocker arms, there is that much less friction in the system, really a two-fer, more HP and less heat.

If you are going to change them out go for full rollers.

Ed

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post #6 of 12 (permalink) Old Jan 29th, 08, 09:47 PM
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Re: Roller Tip Rockers ??

I really don't think any of them give the increases that are claimed. Come on, 30 HP from a set of rockers? Ludicrous. There are certainly positives, but not close to that big.

I ran hundred dollar summit roller tips for years. They did thier job well.
Going with full rollers now, I'm sure they will do thier job too.





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post #7 of 12 (permalink) Old Jan 30th, 08, 06:00 AM
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Re: Roller Tip Rockers ??

Full rollers are worth considerably more due to the way the fulcrum works versus the slipping ball of GM's, but I doubt you'll see 30hp. Do several searches before you decide on a brand, there are plenty out there that are good and plenty that are junk. On a budget, I think Harland Sharp is the best bang for the buck, they've been at it a long, long time.

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post #8 of 12 (permalink) Old Jan 31st, 08, 02:26 PM
 
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Re: Roller Tip Rockers ??

I'm running a set of PROFORM full roller rockers and they only set me back $170. I was on a tight budget so that's why I went with those. You can clearly see the advantage of full rollers and compared to roller tip or stock. Go with a name brand for sure but I say your hp's will only go up about 10-12 not the 30 some people claim.
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post #9 of 12 (permalink) Old Jan 31st, 08, 02:32 PM
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Re: Roller Tip Rockers ??

Don't want to steal this tread, but can you install rollers on a head without guides?

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post #10 of 12 (permalink) Old Jan 31st, 08, 06:13 PM
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Re: Roller Tip Rockers ??

The HP robbing friction is in the ball and rocker pivot design. This is what robs power. By making this fulcrum a needle bearing design is what makes power. . .roller tips don't. If your not going to get full roller rockers then don't waste the money...what do I know. .. .I use to work for a rocker arm company.

Chris

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post #11 of 12 (permalink) Old Jan 31st, 08, 07:06 PM
 
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Re: Roller Tip Rockers ??

6 hp??

I figure CC's investment cast Magnum roller tipped rockers b/c they are a uniform 1.72 ratio up to say their ABOUT 350 pounds limit are fine unless you use Ti/Nitride jobbers that increase the load to like 380 or so as a GUESS by me!!!!!

Go over what TiN treated stock type rockers can take and you need to use full roller fulcum and tipped jobbers imho b/c you will be up into the solid roller cam spring ranges that will need them to live!!

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post #12 of 12 (permalink) Old Jan 31st, 08, 07:16 PM
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Re: Roller Tip Rockers ??

Quote:
Originally Posted by Busted Knuckles View Post
Full rollers are worth considerably more due to the way the fulcrum works versus the slipping ball of GM's, but I doubt you'll see 30hp. Do several searches before you decide on a brand, there are plenty out there that are good and plenty that are junk. On a budget, I think Harland Sharp is the best bang for the buck, they've been at it a long, long time.

I agree with Gary on the friction part of standard ball pivot . I had a set of Comp Magnums and I could see where the pivot pocket had "blued" a little at one time, not sure if it was at start up or not but they did get lube prior. But being I ran high spring pressures, that may have contributed to it. I have the full roller rocker now.

Marc, yes you can install these roller tip rockers on heads with no guides, you do have to use the "self-aligning " type. The have little guide tabs on the end of each roller to keep them centered on the valve stem.

Don
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