Harland Sharp Rockers and Comp R's
11-30-2004, 02:49 PM
#1
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Harland Sharp Rockers and Comp R's I did a search for this, but I found so much conflicting information I decided to post this.
I have a trex cam in my car and it is not making power past 6000 rpm. I have found on the board that the Comp R lifters are to blame, and I have found that the Harland Sharp Rockers are to blame. I need some fresh input on this.
I thought the Trex should make power to at least 6800. Any and all help is much appreciated.
I have a trex cam in my car and it is not making power past 6000 rpm. I have found on the board that the Comp R lifters are to blame, and I have found that the Harland Sharp Rockers are to blame. I need some fresh input on this.
I thought the Trex should make power to at least 6800. Any and all help is much appreciated.
11-30-2004, 03:10 PM
#3
Neither is to blame. The problem is that you are using a non-adjustable rocker with a lifter that requires an adjustable rocker. You are puting excessive preload in a lifter that isn't designed to have a lot of preload and that alone is killing your top end power. Those lifters are only supposed to have .002"-.004" preload.
11-30-2004, 03:11 PM
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Originally Posted by Unaffiliated Racing
Neither is to blame. The problem is that you are using a non-adjustable rocker with a lifter that requires an adjustable rocker. You are puting excessive preload in a lifter that isn't designed to have a lot of preload and that alone is killing your top end power. Those lifters are only supposed to have .002"-.004" preload.
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11-30-2004, 04:20 PM
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Originally Posted by Unaffiliated Racing
in that case you should be good to go..sorry i didn't read you sig, I was thinking it was a stock bottom end.
11-30-2004, 04:26 PM
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Originally Posted by Unaffiliated Racing
just stick with a 13755-kit..it's the 5/16" stuff..only use the 3/8" if you have 3/8" pushrods.
thank you very much for your help
11-30-2004, 04:41 PM
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a guy at Thunder Racing told me I should just use stock rockers and an O.E. Replacement lifter, I guess like a standard comp. Anyone out there using stock or equivalent lifters and rockers on a cam as big as mine?
11-30-2004, 05:48 PM
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Originally Posted by Unaffiliated Racing
well, that would work just fine. You just have a preload issue.
do you think that I would be better off to use stock rockers with stock or stock equivalent lifters? I'm kinda confused as to my best course of action. What exactly do you think I should do as far as my lifter and rocker choice together?
11-30-2004, 05:51 PM
#19
well as is there will be a lot of work to do to change the lifters. With the RPM you are wanting to turn with that cam, I would change out to some adjustable rockers versus going back to stock pieces.
11-30-2004, 05:57 PM
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You can setup the CompR's with the Harland Sharps you have it is a simple shim. Contact me I will help you get it setup correctly I do it all the time.
Nate
Nate