x4 and 918s
x4 and 918s will the comp 918s be alright with the x4? i know the 918s say they are good to .600 lift and the x4 has .610 lift on the exhaust side. has anyone else here ran 918s with an x4?
Def need some dual valve springs...the 918's will not handle the lift on the g5x4, you will just be begging for a valve spring to break. Go with the patriot duals, prc platinums, or the comp 921's.
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Originally Posted by Beast96Z
918's wouldn't hold the X2, much less the X4.
918's are a great spring in a nutshell.
Nate
Originally Posted by Cop Car
918s = free
ive heard that you can shim the springs and they will be fine. plus i dont want to spend 600 bucks on valve springs
ive heard that you can shim the springs and they will be fine. plus i dont want to spend 600 bucks on valve springs
Originally Posted by Cop Car
918s = free
ive heard that you can shim the springs and they will be fine. plus i dont want to spend 600 bucks on valve springs
ive heard that you can shim the springs and they will be fine. plus i dont want to spend 600 bucks on valve springs
Originally Posted by black01_WS6
I am running the 918's and have had no problems, they would be fine in your setup, especially if they are free. How many miles on them? They are a great spring, and as others have pointed out they can handle it, as they are underrated.
$250 is also a far cry from $600. Valve springs are not a place to skimp out, and using used 918's on a aggressive cam is deffinatlly asking for it.
Originally Posted by Nate_Taufer
Incorrect. The 918's are a lot more spring than people give them credit for. They originally were rated for .615 lift and can go even more if shimmed properly. They were down rated after comp released the 921's...probably just to sell more dual springs.
918's are a great spring in a nutshell.
Nate
918's are a great spring in a nutshell.
Nate
I like the PRC's from Texas Speed. They're around $250 I believe and good up to a .660 lift. Of course the Patriots or 921's would also be great. Definitely don't go with the 918's though. You need a good spring for a large cam, and the 918's are a great spring, but are not made for a cam that large. If the springs are free, just sell them and buy the ones you need for your cam.
The 918's were originally rated at around .620" lift....I would shim them if I were going to run them with a cam like that. I have Patriot Golds that rock...but free is awesome.
Like what most other people in this thread have said, I would not run 918s with a cam as big as the g5x4. Its just asking for problems, just go with a good dual spring like Comp 921s or PRC dual golds and not worry about it.