broken spring's

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Nov 29, 2006 | 08:22 PM

LSXRX7

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From: reno

broken manley spring's

Ok I have ls6- ls2 heads with new Manley 221426 dual spring. On all the intake springs the inner spring has broken. Looks like the inner spring does not sit all the way down on the head.. valve seal holds it up and exhaust gets held up a bit as well… so what am I missing??

Last edited by LSXRX7; Nov 29, 2006 at 08:44 PM.

Nov 29, 2006 | 09:32 PM

LSXRX7

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From: reno

If I did not use the locator cup’s will this be the reasoning??

Nov 29, 2006 | 10:08 PM

BNKBRKR

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From: SW KS

You need the different valve spring seats and new valve seals to complete the installation of the dual coil springs....I just found this out on my cam swap last weekend

I've done a lot of cam swaps but never done one with the dual coil springs until this one so I've never needed to swap the seats. Bit me in the ***!!!

Nov 29, 2006 | 10:51 PM

LSXRX7

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From: reno

I was told that the Patriot and the Manley springs you could use stock heads I know that it is not true for Manley but what about Patriot’s or any other brand? Good for .650 lift

Nov 29, 2006 | 11:06 PM

jay_99z

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From: Charleston, SC

Quote:

Originally Posted by LSXRX7

I was told that the Patriot and the Manley springs you could use stock heads I know that it is not true for Manley but what about Patriot’s or any other brand? Good for .650 lift

The heads aren't the issue. You just need to replace the valve seats(and seals). It's not too bad. You can get them from most of the sponsors.

Nov 29, 2006 | 11:16 PM

SHAKER

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You may be able to get the tops of the guides cut down to fit a smaller diameter seal and it sounds like a new size spring locator or cup may be needed also. The inner spring should not be making contact with the seal whatsoever. Have you also checked for the possibility of coil bind and are you using a dual spring retainer.

Nov 30, 2006 | 07:58 AM

NBM2001z28

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From: Bourbonnais, Illinois

You need to get the right spring cups and new seals. Otherwise you'll break the springs like you did. There may be pieces of spring floating in the engine somewhere too after that...