Rocker arm rubbing valve spring cap
they came with the valve springs in a kit http://shop.brutespeed.com/Comp-2692...6-16TI-KIT.htm
they do look a lot different then yours though.
I asked Bob at brute speed and he sent me a link from comp it says 1.835 install height is 1.8 a lot more common? I just have the seat and no spacers under it
they do look a lot different then yours though.
I asked Bob at brute speed and he sent me a link from comp it says 1.835 install height is 1.8 a lot more common? I just have the seat and no spacers under it
I don't know if this means anything or not, but every photo I see of the 623 locks, they're black.
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
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From: Lake County Ca
Id have to look around and see if I kept the stock locks. The ones installed are the black comp ones, I can pull them out and get a picture of them though.
The valves do look like there sitting pretty low, but we've never pulled the valves or messed with them and the heads have never been pulled to my knowledge
It's not the valve stem that's the problem, the retainers you have drop the valve into the retainer and create a shoulder on top....I've never seen dual spring retainers for an LS1 like that...I'm guessing they're the problem
I agree, your retainers are too high. It's either the lock or the retainer itself. I would pull the locks on one cylinder and see what they look like. They might have given you offset locks so the retainers sit higher rather than the standard locks. The offset is usually 0.050" so if that were the case, you installed height would be 1.785" which is closer to those I have measured on untouched GM heads.
Id have to look around and see if I kept the stock locks. The ones installed are the black comp ones, I can pull them out and get a picture of them though.
The valves do look like there sitting pretty low, but we've never pulled the valves or messed with them and the heads have never been pulled to my knowledge
The valves do look like there sitting pretty low, but we've never pulled the valves or messed with them and the heads have never been pulled to my knowledge
Looking at the above picture, you might be using them. If I remember tonight, I'll try and take a picture of some I have in my basement.
Obviously, these locks are for two different spring retainers, but for the same application. The red line marks the location of the ridge, that locks into the valve stem groove. The pair on the right are from Lunati, and they are designed to give an additional 0.050" of spring installed height.
ul-ss , what's the total shim thickness used under the spring seats..?
I would think if offset locks were used there would possibly be an abnormally high amount of shim height used under the spring seats.
I would think if offset locks were used there would possibly be an abnormally high amount of shim height used under the spring seats.
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A typical installed height for stock heads is 1.78".
Tooley's Platinum spring kit is a good example.
Your springs install at 1.835". Since the spring pockets weren't machined deeper, the difference has to come from the retainer. Which is why they look goofy.
It sits .055" higher. It has to in order to get the correct installed height. Thus, it runs into the stock rocker.
Those are bastard springs, esp for a .600" lift cam.
I looked at the add from Brute Speed. Shows YT rockers.....funny, they won't handle the open pressure.
So you have 2 choices. Pick different more conventional springs, retainers, seats, and seals (Tooley stuff is really nice). Or get different rockers.
I suppose you could shim the stock pedestals and get longer pushrods. Not sure that is commonly done with the stock setup. Also not sure what it would do to the wipe pattern.
The destruction of the guide seals is interesting. I'm wondering what the spring seat looks like? Does it locate the spring? It needs to. Also, how close is the inner spring ID to the OD of the seal? Perhaps no clearance there? Easy to check.
With that large installed height, and only .600" lift, I cant imagine a retainer to seal clearance issue.
FWIW, I'm using the Tooley springs on my turbo car. Stock rockers with trunions. .600" lift Tick turbo cam. 7.4" pushrods. It's reasonably quiet, and spins 6900 with no issues. I've had the valve train apart, no signs of distress. Although I don't really like spinning it that hard.....it just goes there to cross the finish line. Time for taller gears.......
Good luck!
Ron
Tooley's Platinum spring kit is a good example.
Your springs install at 1.835". Since the spring pockets weren't machined deeper, the difference has to come from the retainer. Which is why they look goofy.
It sits .055" higher. It has to in order to get the correct installed height. Thus, it runs into the stock rocker.
Those are bastard springs, esp for a .600" lift cam.
I looked at the add from Brute Speed. Shows YT rockers.....funny, they won't handle the open pressure.
So you have 2 choices. Pick different more conventional springs, retainers, seats, and seals (Tooley stuff is really nice). Or get different rockers.
I suppose you could shim the stock pedestals and get longer pushrods. Not sure that is commonly done with the stock setup. Also not sure what it would do to the wipe pattern.
The destruction of the guide seals is interesting. I'm wondering what the spring seat looks like? Does it locate the spring? It needs to. Also, how close is the inner spring ID to the OD of the seal? Perhaps no clearance there? Easy to check.
With that large installed height, and only .600" lift, I cant imagine a retainer to seal clearance issue.
FWIW, I'm using the Tooley springs on my turbo car. Stock rockers with trunions. .600" lift Tick turbo cam. 7.4" pushrods. It's reasonably quiet, and spins 6900 with no issues. I've had the valve train apart, no signs of distress. Although I don't really like spinning it that hard.....it just goes there to cross the finish line. Time for taller gears.......
Good luck!
Ron
Thread Starter
On The Tree
Joined: May 2011
Posts: 129
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From: Lake County Ca
There aren't any shims under the seat just running the seat. I just broke down and ordered a new set of springs today, not really what I wanted to do but im at a loss on what the issue is.
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Staging Lane
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Been off the limiter(6800) plenty, about 30 dyno pulls, good amount of street rips. So far so good. I'll keep an eye on it though...pressures are higher than I wanted but got a screaming deal on a new/100 mi used HCI set up so I used em. Local builder likes the springs...uses them often with no problems allegedly.