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-   -   Cams? valve springs? (http://www.mitsustyle.com/forums/showthread.php?t=14182)

gsxer 01-23-2007 07:17 PM

Cams? valve springs?
 
Hey everyone well I was wondering do I need to change anything necessary in the car if I want to install my DKS cams? I heard on other forums that changing the valve springs is necessary? Is this true?

PS:
Any suggestions on what I need to upgrade would be great thanks.
(MODS BELOW)


-yinchinzhong

MODS:

6-bolt swap
ARP hardware
QPR EGR Block off
BS elim kit
'90 oil filter housing
small 16g turbo
fmic
ported 2g exhaust manifold
255HP fuel pump
2.5" dp, w/ dual 3" resonator
Apexi AFC-2 (changing to dsmlink)
650 injectors
polished 1g fuel rail
MBC
aluminum radiator

Halon 01-23-2007 07:34 PM

Re: Cams? valve springs?
 
What cams do you have? People have ran 272's on stock springs without problems. I personally chose to upgrade mine though, since my head had quite a few miles on it, and it was off at the time. So it was a convenient time to do it for me, and cheap insurance in case my valves were fairly worn since my car is 16 years old. Now I shouldn't have to worry about valve float what-so-ever.

Shane@DBPerformance 01-23-2007 07:47 PM

Re: Cams? valve springs?
 
Which DKS cams? How high do you want to rev it.

gsxer 01-23-2007 08:58 PM

Re: Cams? valve springs?
 
I have 272 DKS cams,and i would like to rev 8000-8500?

tim 01-24-2007 02:28 AM

Re: Cams? valve springs?
 
Quote:

Originally Posted by gsxer (Post 175146)
I have 272 DKS cams,and i would like to rev 8000-8500?

With those cams spinning to stock 7k I would leave your stock springs. If you are spinning to 8k+ I would upgrade for sure.

What turbo are you going to run? The small 16g on pump gas?

Is there really a reason to rev that high? Seems like that 16g would run out of steam that high, maybe not though?

niterydr 01-25-2007 12:23 PM

Re: Cams? valve springs?
 
I would say it won't be benefitial to rev over 7500rpm on your turbo and intake manifold setup.

Our new set of high-rev valve springs will be available shortly.

Thor06 01-25-2007 02:48 PM

Re: Cams? valve springs?
 
I know a guy that pushed stock springs and retainers on 272's to 8200 for several years with no problems. I, however, wouldnt do it.

Swanny, whats the deal on your "high rev valve springs"? Single or dual? Price?

niterydr 01-25-2007 03:28 PM

Re: Cams? valve springs?
 
Quote:

Originally Posted by Thor06 (Post 175387)
I know a guy that pushed stock springs and retainers on 272's to 8200 for several years with no problems. I, however, wouldnt do it.

Swanny, whats the deal on your "high rev valve springs"? Single or dual? Price?

Single setup. These should work a bit better than the Crower (not BC) springs.

The only issue is the chrome moly retainers versus Titanium. Thanks to China, Titanium is VERY difficult to aquire, and thus prices has went up.

Kits should be mid $200's, finalized pricing is being worked on after shipping and a big bulk purchase.

Goat Blower 01-25-2007 03:54 PM

Re: Cams? valve springs?
 
I wouldn't bother with the higher revs either, you're not going to see any gain with that little turbo.

x-pride 01-25-2007 04:31 PM

Re: Cams? valve springs?
 
I agree with Goat Blower. The turbo is to small and will run out of steam. Do you have an eprom ECU to take the rev off? If you have not tune the car yet. It would be best just to spend the money on tuning vs springs. Or save the money for a bigger turbo like a 50trim.

HiImBrian 01-25-2007 04:43 PM

Re: Cams? valve springs?
 
Would you guys say the same thing for a ported/polished big16g?

Swifty1638 01-25-2007 07:37 PM

Re: Cams? valve springs?
 
yes brian, I'd say the same. You can get some good power outta the 16g and mild cams, like 264's or something in that area.

-A. Swift

Shane55113 01-30-2007 01:24 PM

Re: Cams? valve springs?
 
Go for the 272's and clip that turbo.


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