Yella Terra users Come In.... RE: Valve Float
Yella Terra users Come In.... RE: Valve Float I am thinking that I have an issue with valve float due to my dyno graph, XE-R lobes, and what not. I am looking to upgrade my rocker arms but hear a lot of people say that aftermarket rocker arms weigh more than stock, and will thus cause valve float rather than get rid of it. Does anyone who uses Yella Terras have valve float? Thanks!
Here is what I am planning to eliminate valve float:
- Thunder Racing hardened pushrods (already installed)
- Yella Terra roller rocker arms
- Titanium retainers
- Patriot 'Gold' dual valve springs
Here is what I am planning to eliminate valve float:
- Thunder Racing hardened pushrods (already installed)
- Yella Terra roller rocker arms
- Titanium retainers
- Patriot 'Gold' dual valve springs
You're numbers seem extremely low for having a cam, LT's, bolt-ons and last but not least, a supercharger! Was that a mustang dyno maybe?
Just went to your site and I must say that dual cutout y-pipe looks sweet! I bet that's loud as all hell when open.
Just went to your site and I must say that dual cutout y-pipe looks sweet! I bet that's loud as all hell when open.
Originally Posted by Red99TA
You're numbers seem extremely low for having a cam, LT's, bolt-ons and last but not least, a supercharger! Was that a mustang dyno maybe?
Just went to your site and I must say that dual cutout y-pipe looks sweet! I bet that's loud as all hell when open.
Just went to your site and I must say that dual cutout y-pipe looks sweet! I bet that's loud as all hell when open.
Put the stock rockers back on. I had Comp Pro Mags, had valve float at 5300 rpm as well, and they were professionally adjusted. No need for aftermarket rockers, I turn 7000 rpm all the time with my stockers and have never had a problem.
well, i do have a set of yella terra's and i do have a big dip in my graph from 5200 to 5800. It maybe also a bent pushrod, a colasped lifter....
Im not sure if the yella'z are responsible but i do know that i will check this out very soon....been really busy down here...
I have been researching a set of crane gold, 1.8 rockers, the kit includes everything you need and you should pick up some extra poines..though a few factors like deck clearance, fro example, need to be address from my understanding....
this seems to be a recurring things on this board with these cars....not so much with the terra'z but with everything in general....
Im not sure if the yella'z are responsible but i do know that i will check this out very soon....been really busy down here...
I have been researching a set of crane gold, 1.8 rockers, the kit includes everything you need and you should pick up some extra poines..though a few factors like deck clearance, fro example, need to be address from my understanding....
this seems to be a recurring things on this board with these cars....not so much with the terra'z but with everything in general....
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TECH Junkie
Joined: Dec 2001
Posts: 3,242
Likes: 0
From: Lakeland, FL
With my yt's I had valve float with the comp r lifters, I switched to the stock lifters and no more float.
They yt's are overall lighter than stock but weigh almost double at the tip of what a stocker does. Just stay away from the comp r lifters.
They yt's are overall lighter than stock but weigh almost double at the tip of what a stocker does. Just stay away from the comp r lifters.
I wouldn't worry about getting the rockers. Some of our best sponsors only use stock rockers. Focus you time on getting the springs and retainers and it should fix your problem.
I had Harland sharps with patriot duals and floated the valves at 6300. I reinstalled the stockers and it seems to pull now to the 7500 rev limiter, but I haven't been back on the dyno to verify it.
TECH Addict
Joined: Nov 2001
Posts: 2,662
Likes: 1
From: LaConner WA
I've heard repeatedly that the stockers are way easier to rev without valve float than any aftermarket rocker out there including the high dollar Jesel's. I think I'm sticking with the stockers for now myself 
I have a set of slp 1.8's with comp r lifters and patriot performace stage 2 5.3l heads with a 222/224 566/568 lift and only managed to put down 370 rwhp????... i know my weiand manifold is part of the problem and I am switching to a ls6, but are the 1.8's causing problems??.... car has full exhaust, and cant understand why I am putting such little power to the ground??....I feel your pain 
Originally Posted by Ferocity02
Yes I know the numbers are low. I am missing 100rwhp or more. It was a dynojet, not mustang dyno. I think valve float may be one of the causes, because the power peaks at about 5300 and falls off from there.
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by JohnnyStorm
My YT's work fine. It sounds like the stock springs are still in the car with the TR224. The stock springs fall off at about 5300 rpm.
