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Springs for EPS 226/230

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Old 10-10-2011, 11:00 PM
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Originally Posted by Darkman
How? (This is a question - not a challenge.)
Spring load/deflection. The lift loss can also be measured dynamically on a running valvetrain on the Spintron.

Want to have some fun, check lift with a checking spring, a beehive, then a dual spring........
Old 10-10-2011, 11:51 PM
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Originally Posted by 66 BADBOY
What about the PSI beehives that are sold from Advanced Induction? That is what they are recommending to me when I get their valve job and cam done. Although I do not know what cam they are going to design for me yet. According to AI, they are the best beehive in the market.

Looking at the spring options on AI's site, they call them the 1511 spring and they provided a link to the PSI spec sheet, which after looking at it I'm assuming PSI's part number is LS11511ML.

Here's the spring spec sheet from PSI's site.

http://www.psisprings.com/index.php?...ask=view&id=17
DAMIAN recommend PSI springs to me for my eps cam, FWIW
PSI 1511's are hands down the best beehive spring in existence. I've shimmed a set that took .664 lift not too long ago.

http://www.cvproducts.com/Products/PSILS1511ML.aspx
Old 10-11-2011, 07:57 AM
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Im going to be running PAC 1219s with my 222/234 EPS cam.
Old 10-11-2011, 10:37 AM
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Originally Posted by SweetS10V8
4.Dual springs often result in a loss of lift, typically .020-.030" between a beehive and a dual. Ive seen as much as .070"


I don't understand how a dual can cause loss of lift. Your lifter, pushrod, rocker, and valve are all going to going to move in direct corelation to the cam. Spring tension doesn't affect the mechanics of the lift. Resistance/power loss sure, but I don't understand how it would affect the lift of the cam. If I'm missing something here please fill in the blanks.

Last edited by Camaro Z; 10-11-2011 at 10:46 AM.
Old 10-11-2011, 12:20 PM
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In my twisted way of thinking, if the wrong pushrod was used and lifter preload was not checked then yes a dual spring with more seat pressure could hinder lift, but if everything is set up correctly then a dual spring or bee hive spring should not soley affect the gross lift. But what do I know lol. Geoff, I'm waiting on your chime in on this one
Old 10-11-2011, 01:06 PM
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The only time you're going to lose valve lift is if the pushrod starts defecting because the springs are too stiff.
Old 10-11-2011, 02:18 PM
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I agree with both of you, there either has to be deflection or slop somewhere in the setup to cause loss of lift.
Old 10-13-2011, 11:23 AM
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Don't forget about the PRC springs. They're proven performers & a much newer designed compared to the gold or platinum springs from years ago. Valve spring technology is a constantly advancing technology. 5 year old spring technology is just way way behind....
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Old 10-13-2011, 04:24 PM
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A quality beehive spring is ideal for this application.
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Old 10-13-2011, 05:10 PM
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Patrick is there any negative effects running a good dual spring? Lets say a comp 921?
Old 10-13-2011, 10:01 PM
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Originally Posted by Jason 98 TA
Don't forget about the PRC springs. They're proven performers & a much newer designed compared to the gold or platinum springs from years ago. Valve spring technology is a constantly advancing technology. 5 year old spring technology is just way way behind....
Thats what I run with my cam which is nearly identical to yours and I shift at 6500.
Old 10-14-2011, 12:29 AM
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Originally Posted by Jason 98 TA
Don't forget about the PRC springs. They're proven performers & a much newer designed compared to the gold or platinum springs from years ago. Valve spring technology is a constantly advancing technology. 5 year old spring technology is just way way behind....
Do they make those in Beehive style? if so I don't see any on your site? Just the doubles...?
Old 10-14-2011, 06:48 AM
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Originally Posted by LilJayV10
Patrick is there any negative effects running a good dual spring? Lets say a comp 921?
Negatives: increased sewing machine sounds coming from underhood, increased lifter wear, increased possibility of spring deflection.
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Old 10-14-2011, 08:04 AM
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Originally Posted by Patrick G
Negatives: increased sewing machine sounds coming from underhood, increased lifter wear, increased possibility of spring deflection.
So what are the benefits and/or at what point do the become necessary?
Old 10-14-2011, 11:26 AM
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Originally Posted by Camaro Z
So what are the benefits and/or at what point do the become necessary?
It depends on your entire valvetrain from camshaft to valve. Benifits are a properly working valvetrain system, where the valve does what the camshaft tells it to do.

There is no blanket answer, or one size fits all.

Weight is a huge factor, for example I have seen a valvetrain going into valve float at 6800RPM with a standard LS1 valve. Then by ONLY changing to the hollowstem LS6 valve, the valvetrain was stable to 8400RPM. Remember its an entire system, adding lightweight valves, valve springs, or any other part wont ensure valvetrain stability to "x" amount of RPM.
Old 10-14-2011, 03:35 PM
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So would it be beneficial in with this type of cam to go back to a beehive spring?

I have been sucked into the "everyone says it on the internet so it must be true" before and I don't want to again.
Old 10-14-2011, 03:57 PM
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I dont think it would be worth swapping, just to swap. If for some reason you need to swap springs, I would goto a beehive.

If your springs are good, the benificial thing to do would be to shim them correctly.

Originally Posted by LilJayV10
I have been sucked into the "everyone says it on the internet so it must be true" before and I don't want to again.
Dont worry about that, there is a lot of mis-information that get regurgitated so many times it become true(on the internet) and in peoples minds.

Who knows, I could be totally wrong and everyone else is right?!?!?!?!??!
Old 10-16-2011, 11:41 PM
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A local machine shop screwed up my heads when they installed the springs. Wrong spring height, not enough retainer to seal clearance, wrong seat locators, wrong seals. Now that I have learned how to set up a set of cylinder heads they will be dead nuts on when it goes back together. I had two of the 921's tested by Shane@Thunder Racing and they have 420lbs open pressure so they are in good shape. I talked to Shane about going with beehives and he said the 921's will work great once they are set up properly.
Old 10-19-2011, 09:34 AM
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Originally Posted by LilJayV10
I talked to Shane about going with beehives and he said the 921's will work great once they are set up properly.
How are you setting them up?
Old 10-19-2011, 01:12 PM
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He recommended the install height to be 1.72


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