C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Those Running Roller Rockers?

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Old Nov 7, 2003 | 12:13 PM
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Default Those Running Roller Rockers?

Have Roller Rockers on my ZZ4 Have a Tiny bit of a Metallic Clatter.I was told it was because of the Roller Rockers?
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Old Nov 7, 2003 | 12:21 PM
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Default Re: Those Running Roller Rockers? (CAJUN C4)

I've got rollers on my LT1 and they make a little noise. Tiny bit of metallic clatter is about how I'd describe it. I readjusted them just to make sure and the noise was the same, so I think you've got nothing to worry about.
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Old Nov 7, 2003 | 12:23 PM
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Default Re: Those Running Roller Rockers? (1_piece_at_a_time)

As long as it isn't a "clack" you're ok. If you want to adjust them while the car is running.
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Old Nov 7, 2003 | 12:28 PM
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Default Re: Those Running Roller Rockers? (CAJUN C4)

That's what I was told by My Engine Builder.
Thanx Guys, I feel alot better.
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Old Nov 7, 2003 | 12:35 PM
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Default Re: Those Running Roller Rockers? (scorp508)

I wonder if a little thicker Viscosity Oil would help.
Now running 5W30 Mobil 1.?
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Old Nov 7, 2003 | 12:45 PM
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Default Re: Those Running Roller Rockers? (CAJUN C4)

Yep, they clatter. You could readjust them again if you think they loosened up on you. If they are very noisy and don't want to shut up then it could be that you got the non-self aligning ones. If so then they are just going to be noisy!

Never heard of anyone changing oil weight to silence them. Not sure how much if any that would even help.
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Old Nov 7, 2003 | 12:56 PM
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Default Re: Those Running Roller Rockers? (MyX10sion)

That's it..I do have Self-Alligning. I can live with it.
Thanx Guys. I might try 10W30 next Oil Change.?
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Old Nov 7, 2003 | 12:56 PM
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Default Re: Those Running Roller Rockers? (CAJUN C4)

> I wonder if a little thicker Viscosity Oil would help

Help what? It is not a problem but a feature so do not bother to try to fix it.

I am running Mobil 1 RF 5W-50 and the sound is there. I kind of like it though, sounds a bit more racy :)

ToniH
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Old Nov 7, 2003 | 01:15 PM
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Default Re: Those Running Roller Rockers? (ToniH)

Toni..Your Right I agree Sounds a little like a Sold Lifter Roller cam does.
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Old Nov 7, 2003 | 01:24 PM
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Default Re: Those Running Roller Rockers? (CAJUN C4)

You guys can HEAR rockers over your exhaust?
Get the Flowmasters and you won't hear them.
Won't hear your radio either.
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Old Nov 7, 2003 | 01:30 PM
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Default Re: Those Running Roller Rockers? (VetNutJim)

I have Em...I can only here my Rockers when I pull right next to another Car.
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Old Nov 7, 2003 | 01:43 PM
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Default Re: Those Running Roller Rockers? (VetNutJim)

You guys can HEAR rockers over your exhaust?
Get the Flowmasters and you won't hear them.
Won't hear your radio either.
I have headers, no cats, comp cam pro magnum RR's and flowmasters. You can still hear them a little. Now if the mufflers exited into the engine compartment sure you wouldn't hear them.
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Old Nov 7, 2003 | 02:15 PM
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Default Re: Those Running Roller Rockers? (VetNutJim)

> You guys can HEAR rockers over your exhaust?
> Get the Flowmasters and you won't hear them.

What, those wimpy silent-service mufflers? ;) I do have Dymomax Ultra Flow SS's which resonate so much I can hardly see straight and I can still hear the rockers at idle :lol:

To be honest, I must admit that when I installed my Crane 1.6 RR's I thought there was a major problem and I re-opened the rocker covers to readjust them. I was sure there was one that was totally lose. Well, I was wrong and later I learned that the nice "rattatatatata!" -sound was normal. Now I kind of like it. And my friends are impressed too... :D

ToniH
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Old Nov 7, 2003 | 02:20 PM
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Default Re: Those Running Roller Rockers? (ToniH)

> I wonder if a little thicker Viscosity Oil would help

Help what? It is not a problem but a feature so do not bother to try to fix it.

I am running Mobil 1 RF 5W-50 and the sound is there. I kind of like it though, sounds a bit more racy :)

ToniH
I didn't know Mobil 1 made a 5W-50 synthetic. Was does the RF stand for?

Thanks,

Jake
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Old Nov 7, 2003 | 02:21 PM
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Default Re: Those Running Roller Rockers? (JAKE)

Was does the RF stand for?
Really Fussy :D
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Old Nov 7, 2003 | 02:41 PM
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Default Re: Those Running Roller Rockers? (scorp508)

heheh... :rofl:

Mobil 1 markets different oils in Europe than in USA. The ones we mostly use here are made in Europe too (also the USA made Mobil 1 oils are available but nobody uses them in high perf cars). The one considered best is called "Mobil 1 Rally Formula" (hence RF) and the best grade available for sports cars is the 5W-50 which works very well even when very hot.



ToniH


[Modified by ToniH, 10:05 PM 11/7/2003]
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