Atok

Ok, some of you may have seen my other posts concerning my noisy GMPP 1.6 RRs (Crane Gold). I found they tick/rattle a little too much for my taste. I like my car to be quiet under the hood. Also, with hot oil, at certain RPMs they would tick so bad I was getting a few knock counts while sitting in neutral in my garage. It was NOT adjustment. I tried 1/4, 1/2, 3/4, 1 turn and it made no difference at all. Even installed a new set of lifters... no difference.

I read some other posts here that Comp-Cams 1.6 Magnum roller tip rockers are much quieter. A couple of folks in particular had my exact problem. So today I installed a set and can confirm that they are MUCH quieter. No problem with knock counts and the tick/rattle sounds are gone. Engine sounds nice and smooth again. I can still hear the sewing machine sound but that's normal IMO and not so loud. I think I'll be happy with the roller tips.

Performance? I notice no difference in the SOTP meter. I also did a few runs using my G-Tech Pro and got results identical to the GMPP full rollers. Moral of the story.... if you don't like ticky full roller rockers then buy CompCams Magnum p/n 1418-16.



P.S. Anyone want a set of GMPP 1.6 RR with 1800 miles on them? Make an offer if you do.

STL94LT1

Glad to see they solved your problem.

Atok

Yeah, I'm glad too. The engine sounds so much smoother now, just quieter I guess. More like it was when it was stock.

jwt1603

Thanks for the info. From looking at Jeg's the Comp roller tipped are also lot less money than the Crane true rollers.

bdaly84

I just installed the 1.6 Roller tips as well. I adjusted them, and they do still have a small amount of noise. I have been trying to eliminate the noise all together, but you say you think that sewing machine noise is normal. Interesting. I have not run mine hard yet, but I was going to try adjusting them again, but maybe the small noise is normal? Hmmm.

STEVEN13

Thanks for posting your results...anyone want to buy a set of Scorpian 1.6 300 miles?

Steve

96 lt-4

great.the only thing i kept out of the hotcam kit was the rockers.and i sold my comp 1.6 roller tips to the guy who bought the cam kit.i hope it is'nt too noisy as my budget is near bankrupt after the engine build.

STEVEN13

Atok,

Are you still happy with these rockers? I am thinking about of getting them also.

Thanks,
Steve

jsup

What's wrong with the Scorpions?

STEVEN13

IMO very noisy. I adjusted it several ways (even running).

Steve

1989vette

Hey are the scorpions or GMPP rockers still available? PM or post if they are thanks!

Atok

Yes, I'm still happy with them. Much quieter than the GMPP full rollers.

Atok

I've still got a full set of GMPP 1.6RR here. I'll never use them again so I guess they are for sale.

STEVEN13

Thanks for the response...I think I am going to order them today. I will post my results also. Just so you know, I also changed my lifters!

Was it quieter with the stock rockers, or is it quieter now?

Thanks again,
Steve

STEVEN13

Yes they will be for sale!

Kool88vette

I installed Comp Pro Magnums 1.6 RRs. They are much quieter than my stock stamped rockers.

jsup

I am looking at new heads. I probably will go with 7/16ths studs.

I'll part with the Scorpions if anyone's interested. They are 3/8ths 1.6 narrow body self aligning.

Atok

I would say they are about the same as the stock rockers. Maybe slightly more mechanical sounding but basically sound like stock.

STEVEN13

Thank you!

STEVEN13