Which rockers with comp "R" lifters
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On The Tree
Joined: May 2002
Posts: 193
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From: San Antonio, Texas
Which rockers with comp "R" lifters I've got the F1 cam, 918's, hardened stock length rods, and now i'm adding the comp "r" lifters, any suggestions on which rockers to go with. I've heard adjustables are better with these lifters can anyone confirm or deny that? Thanks.
Originally Posted by SSInnovations
Go adjustable, the comp pro mags are a nice set and for around 450 you can’t go wrong. I would be uneasy shimming the stock ones, although it has been done.
Originally Posted by SSInnovations
Go adjustable, the comp pro mags are a nice set and for around 450 you can’t go wrong. I would be uneasy shimming the stock ones, although it has been done.
Originally Posted by Billy Bad WS7
I've got the F1 cam, 918's, hardened stock length rods, and now i'm adding the comp "r" lifters, any suggestions on which rockers to go with. I've heard adjustables are better with these lifters can anyone confirm or deny that? Thanks.
Shouldn't matter what rocker set-up you use as long as you run .012 - .015 preload - which is what the comp r lifter is supposed to have. I just put my YT rockers on tonight and followed jmx's how to directions and they came out perfect.
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From: Baton Rouge, LA
Originally Posted by 4mulaJoe
Y uneasy? It's not much different than going to a shorter pushrod if you mill the heads/etc?
I have used Comp Rs in the past with stock rockers. It can be done, but it will take some careful setup. Adjustable rockers would definitely make the job much easier, though.
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Launching!
Joined: May 2003
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Originally Posted by DOC OTIS
Shouldn't matter what rocker set-up you use as long as you run .012 - .015 preload - which is what the comp r lifter is supposed to have. I just put my YT rockers on tonight and followed jmx's how to directions and they came out perfect.
http://www.compcams.com/Technical/Ca...ML/282-289.asp
Originally Posted by GTBMad
Have seen them fitted with non adjustable rockers, there technical notes say they should be fitted with adjustable rockers and preload is .002 - .004
http://www.compcams.com/Technical/Ca...ML/282-289.asp
http://www.compcams.com/Technical/Ca...ML/282-289.asp
Think thats for a different lifter. Gonna call Comp and find out for sure what the pre-load is supposed to be.
Launching!
Joined: May 2003
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Originally Posted by DOC OTIS
Think thats for a different lifter. Gonna call Comp and find out for sure what the pre-load is supposed to be.
The 850-16 are there standard replacement lifter for the LS1
Originally Posted by GTBMad
I have Comp Rs and if you check the sponsors websites that is the part number 875-16. If you read the litreature it also states they are for LS1 use.
The 850-16 are there standard replacement lifter for the LS1
The 850-16 are there standard replacement lifter for the LS1
This man is right on
I had mine setup with the stock rockers and stock preload and talk about noisey?! I could hear the valvetrain over the car and exhaust while driving!
10 Second Club
Joined: Jun 2002
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From: H-town
Originally Posted by Country Boy
This man is right on
I had mine setup with the stock rockers and stock preload and talk about noisey?! I could hear the valvetrain over the car and exhaust while driving!
I had mine setup with the stock rockers and stock preload and talk about noisey?! I could hear the valvetrain over the car and exhaust while driving!
They work great together I have done it many times with Comp R and YT or Harland Sharp`s. You just need to get the preload right. Shimming the rockers causes no problems with your valve train.
Nate
Nate
I can shift faster than you.
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From: Baton Rouge, LA
If you read what I posted, you will notice that I said "if shimmed enough" you will may have valvetrain issues due to your valvetrain geometry being incorrect. I never once said it couldn't be done, as I have shimmed the rocker stands in the past as well. You just need to be very careful when shimming as it does effect valvetrain geometry. If everything checks out fine after shimming, then you are all set. I just didn't want people to think they could shim their rockers .500" to get the correct preload. Get it as close as possible with your pushrod length and then only use the shims to make small changes.
Jason
Jason