Re: Do i need spring locaters on cast iron heads?
[Re: VoodooCLD]
#1567866
01/24/14 11:44 AM
01/24/14 11:44 AM
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Joined: Oct 2005
Posts: 8,879 Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,879
Ontario, Canada
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Quote:
i had machined to fit viton seals, and had the original locating section cut so i could run dual valve springs.
I think you should post a pic of the seat. When the seat is cut for inner springs they usually only cut it back to the i.d. of the inner spring. Likewise when cutting the guide for viton seals, they usually only cut the guide.
The spring locators are all .060" thick. Instead of cutting the seats again you might consider getting retainers or valve locks that will give you .050" more spring height.
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Re: Do i need spring locaters on cast iron heads?
[Re: B G Racing]
#1567868
01/24/14 01:36 PM
01/24/14 01:36 PM
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Joined: Oct 2011
Posts: 460 Oklahoma
VoodooCLD
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What RPM's are we talking here. My cam is only good to 6200 rpm, and i'ts mostly a street car, so i won't be getting up there too often.
I'd really not have to modify it too much more. Do you guys really think it will be a problem?
Last edited by VoodooCLD; 01/24/14 01:36 PM.
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Re: Do i need spring locaters on cast iron heads?
[Re: DragDart360]
#1567869
01/24/14 02:08 PM
01/24/14 02:08 PM
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Joined: Aug 2004
Posts: 2,128 sweden
sshemi
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sweden
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Quote:
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Check the new retainers and springs and see if the retainers will limit the springs(inner and or outers ) from moving around on the heads, if not you should do something to try and limit the springs from moving around on the heads at the upper RPM
I've had this happen
Me too. They even jumped out of the pocket on one side. 1.63 pocket for 1.46 spring. The springs got crocked so they went into the trash.
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Re: Do i need spring locaters on cast iron heads?
[Re: VoodooCLD]
#1567870
01/24/14 02:16 PM
01/24/14 02:16 PM
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Joined: Jan 2003
Posts: 75,043 U.S.S.A.
JohnRR
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Quote:
What RPM's are we talking here. My cam is only good to 6200 rpm, and i'ts mostly a street car, so i won't be getting up there too often.
I'd really not have to modify it too much more. Do you guys really think it will be a problem?
What springs are you running ? I did the same thing as you , cut for viton seals and ended up with a flush spring seat. have your springs checked and see what happens to the pressure with .030 less installed height and run the cups without shims.
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Re: Do i need spring locaters on cast iron heads?
[Re: Cab_Burge]
#1567875
01/24/14 03:50 PM
01/24/14 03:50 PM
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Joined: Oct 2011
Posts: 460 Oklahoma
VoodooCLD
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Quote:
Quote:
New question
Were can i find cups or locaters for a .645 valve stem diameter, with .730 ID and 1.450" OD spring?
So far i haven't found anything.
I buy and use Comp Cams spring seats and spring cups, two different ways to locate the springs Let us know if you don't find the ones you need, I'll look at the ones I have in stock also to see if any of them will work for your application
so far i have looked at comp, crane, and lunati locaters and cups, and still haven't found anything.If my valve guide was .630 i think i'd be in business, but for some reason the machinist cut them to .645. I didn't specify so i guess i can't complain too much.
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Re: Do i need spring locaters on cast iron heads?
[Re: VoodooCLD]
#1567879
01/24/14 07:15 PM
01/24/14 07:15 PM
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Joined: Jan 2003
Posts: 75,043 U.S.S.A.
JohnRR
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I Win
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Quote:
Ok a few things. I remeasured my guides, and they are .625. So the .630 should work fine. However i was looking at the my spring retainer, and they have a dual step in them. The smaller step fits in the inner spring, and the larger step fits just inside the outer spring.
Will these do a good enough job of aligning the spring? Or do i also need a locater/cup.
They will locate the TOP of the spring fine , the BOTTOM , not so much ...
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Re: Do i need spring locaters on cast iron heads?
[Re: drew72]
#1567881
01/24/14 07:29 PM
01/24/14 07:29 PM
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Joined: Oct 2011
Posts: 460 Oklahoma
VoodooCLD
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Quote:
How many ways does it need to be said. YES, you SHOULD run a spring seat cup.
How nice of your to give no advice whatsoever and then come in aggressively stating your opinion.
Your input is not needed. Move along now.
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Re: Do i need spring locaters on cast iron heads?
[Re: Stanton]
#1567882
01/24/14 07:34 PM
01/24/14 07:34 PM
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Joined: Oct 2011
Posts: 460 Oklahoma
VoodooCLD
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Quote:
Quote:
i had machined to fit viton seals, and had the original locating section cut so i could run dual valve springs.
I think you should post a pic of the seat. When the seat is cut for inner springs they usually only cut it back to the i.d. of the inner spring. Likewise when cutting the guide for viton seals, they usually only cut the guide.
The spring locators are all .060" thick. Instead of cutting the seats again you might consider getting retainers or valve locks that will give you .050" more spring height.
I sure wish he would have only cut the guides down to the inner diameter of the spring. I even brought him a full set of springs locks and seals when i had them cut. Too late now, gotta work with what i've got.
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Re: Do i need spring locaters on cast iron heads?
[Re: VoodooCLD]
#1567883
01/24/14 11:12 PM
01/24/14 11:12 PM
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Joined: Aug 2010
Posts: 343 S.E.Mich
drew72
enthusiast
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Posts: 343
S.E.Mich
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Quote:
Quote:
How many ways does it need to be said. YES, you SHOULD run a spring seat cup.
How nice of your to give no advice whatsoever and then come in aggressively stating your opinion.
Your input is not needed. Move along now.
You are only upset because you don't want to hear the truth. I didn't give my opinion because it has already been said. You need to use a locator to keep the bottom of the spring from walking. That is why there is normally a spring pocket. Since yours has been removed, you need a new way of locating the bottom the spring.
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Re: Do i need spring locaters on cast iron heads?
[Re: loaderpro]
#1567887
01/25/14 12:48 PM
01/25/14 12:48 PM
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Joined: Sep 2007
Posts: 145 NJ
cb1289
member
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member
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Posts: 145
NJ
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I agree with loaderpro. Not needed with iron.
62 Dodge Dart Wagon
65 Plymouth Satellite
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