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Jul 20, 2004 | 05:17 PM

God of Thunder

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From: Bloomfield, NM

What valvesprings...

should i use with an FM13 cam? single, double? i have tried searching, but can't really seem to find it. thanks a lot

Jul 20, 2004 | 06:46 PM

JDPZ28

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From: Holly Springs, NC

Quote:

Originally Posted by God of Thunder

should i use with an FM13 cam? single, double? i have tried searching, but can't really seem to find it. thanks a lot

Hey Walter,
get the Patriot duals, Texas Speed carries them. I broke two Crane duals with that cam and they only had about 10k miles on them.

Jul 20, 2004 | 06:58 PM

soundengineer

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From: Chicago IL

yeah.. patriot gold duals would be a great choice....

Jul 21, 2004 | 09:17 AM

God of Thunder

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From: Bloomfield, NM

thanks guys

Jul 21, 2004 | 10:45 AM

52172

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From: Buellton Ca

If you got the cash go with comp 921's they are truely the best.

Jul 21, 2004 | 11:02 AM

MeanWS6

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price not being an issue, what are better the COMP921's or Golds?

The way I look at it, spend a little more now and save alot of frustration later

Jul 21, 2004 | 12:35 PM

TVWilkes

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From: RainbowCity,Alabama

Quote:

Originally Posted by MeanWS6

price not being an issue, what are better the COMP921's or Golds?

The way I look at it, spend a little more now and save alot of frustration later

The comp spring cost more,but is it better.Both springs are made of quality material.The Patriot "GOLD" spring is made of super pure chrome silicone vanadium.The spring is also electro polished,to improve spring life and remove stress risers.The comp spring is probally made of chrome silicone but is not polished.I worked with the spring companies engineer to develope the "GOLD" spring.Neither company manufacturers the spring,we have a spring manufacturer build them.

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Jul 22, 2004 | 06:28 AM

JDPZ28

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From: Holly Springs, NC

Quote:

Originally Posted by Blacker

The Crane Duals from Thunder Racing will work great. Can't beat the price either.

see my previous post^.

Jul 22, 2004 | 09:34 AM

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God of Thunder

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From: Bloomfield, NM

i think ill be going with the patriot golds. thanks a lot guys

Jul 22, 2004 | 10:25 AM

#11

DanZ28

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From: Cali/Bay Area

I'm running the crane dual 832's with the Trex and no problems so far. Is there some sort of breaking issue with these, or is this a one time occurance.

Dan

Jul 22, 2004 | 11:07 AM

#12

-Joseph-

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From: Texas and Qatar

We run the Patriot doubles mainly because of the better pressures.. The crane's have also worked well for us if we shim them up to get more pressure from them

Jul 22, 2004 | 11:25 AM

#13

JDPZ28

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From: Holly Springs, NC

Quote:

Originally Posted by -Joseph-

We run the Patriot doubles mainly because of the better pressures.. The crane's have also worked well for us if we shim them up to get more pressure from them

^ what he said! I had some valve float on the dyno with my Crane duals/FM13 combo @6300rpm's, due to lack of seat pressure. Also I think I am the only one(that I have seen or heard of anyways) that has broken one(actually two