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Re: Valvesprings galling aluminum heads ???
[Re: Stanton]
#862202
11/24/10 12:58 AM
11/24/10 12:58 AM
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Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
MoparBilly
master
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master
Joined: Jan 2003
Posts: 4,448
Phoenix, AZ
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Wow, didn't know anyone would even consider running the spring against an aluminum head without something under them...
"Livin' in a powder keg and givin' off sparks"
4 Street cars, 5 Race engines
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Re: Valvesprings galling aluminum heads ???
[Re: Stanton]
#862204
11/24/10 01:01 AM
11/24/10 01:01 AM
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Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
PUNK
top fuel
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top fuel
Joined: Dec 2004
Posts: 1,717
Rancho Cucamonga, Calif.
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Valve springs need at least a shim under the valve springs to keep the spring off the aluminum head or you WILL gall the heads. Valve springs cannot run directly on the aluminum. They will rotate when the engine is operating which is when the gauling is occurring.
10.53 @ 125mph. 1.37 60 foot. Caltracs and Monoleafs, AFCO shocks.
Heads by INDIO MOTOR MACHINE; IMM.
CP Pistons, PC Carbs.
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Re: Valvesprings galling aluminum heads ???
[Re: Stanton]
#862205
11/24/10 01:05 AM
11/24/10 01:05 AM
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Joined: Jan 2003
Posts: 19,658
Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,658
Las Vegas
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What is the problem you are having? Or is there one and you are just asking. If just asking I would not consider it.
If you are having an issue using just shims maybe you dont have enough spring and the valvesproing is "moving" around on the head due to being weak and chipping away at the seat of thehead. Seen it a couple of times on Indy heads and worn out/broken springs. Just guessing...
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: Valvesprings galling aluminum heads ???
[Re: MoparBilly]
#862208
11/24/10 01:30 AM
11/24/10 01:30 AM
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
goldmember
master
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master
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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Quote:
Wow, didn't know anyone would even consider running the spring against an aluminum head without something under them...
 I'd bet the aluminum isn't very happy.
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Re: Valvesprings galling aluminum heads ???
[Re: B G Racing]
#862215
11/24/10 02:53 PM
11/24/10 02:53 PM
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Joined: Feb 2007
Posts: 5,080
organ
maximum entropy
master
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master
Joined: Feb 2007
Posts: 5,080
organ
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i prefer cups over locators. i've seen galling with locators. minor, but i am allergic to that sort of thing.
for what is the good life if not doing things thoughtfully?
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Re: Valvesprings galling aluminum heads ???
[Re: maximum entropy]
#862216
11/24/10 02:57 PM
11/24/10 02:57 PM
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Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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Quote:
i prefer cups over locators. i've seen galling with locators. minor, but i am allergic to that sort of thing.
Cups are great but some times the thickness prohibits their use.I personally don't like removing to much material from the spring seat if I can't get the proper spring height with locks,retainers or groove location. 
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Re: Valvesprings galling aluminum heads ???
[Re: maximum entropy]
#862218
11/24/10 06:18 PM
11/24/10 06:18 PM
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Joined: Oct 2005
Posts: 9,197
Ontario, Canada
Stanton
OP
Don't question me!
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OP
Don't question me!
Joined: Oct 2005
Posts: 9,197
Ontario, Canada
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Quote:
Cups are great but some times the thickness prohibits their use.I personally don't like removing to much material from the spring seat if I can't get the proper spring height with locks,retainers or groove location.
Cups or locators ... the thinnest I've found are all .060" thick. There is a .015 shim in there now to give the 1.9" installed height so that would mean cutting the seat .045" deeper as well as wider to 1.680 from 1.55 to fit the appropriate cup. Is there enough meat there to do that? Width looks fine but only experience can tell me if there is enough to increase the depth .045".
The alternative is just to cut the inner portion of the seat that is .661 down to .630 and use a locator instead of cup. However, the inner spring i.d. of the locator is .715 and the inner spring i.d. is actually .721. Is this still too much room for the spint to "walk"? The outer spring o.d. is 1.55 ... an exact fit to the pocket.
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Use at least a spring cup or a spring locator that will not allow the spring to move more than .030 or so one side to the other and maintain at least .060 from the nearest part of aluminum that the springs can eat 
