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Old 05-18-2007, 11:53 AM   #31
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ok i want to use the newer crower II's when i go turbo and test what they can do on a F/I setup. i thought the HKS car was running them as well. now granted he has the FR intake manifold and a tubular exhaust manifold i'm not neccisarily looking for more HP/TQ just by running these cams... I'm looking for a higher rpm range. stock cams on zetecs max the powerband out around 6k, wherea the svt's are making power on boost up to 7k. i've checked the specs on stock svt cams with the crower II's and the profiles are only off a little. the svt cams have some overlap in them...so if they can run it, wouldn't a cam similar to that work with a turbo? im not trying to say my way is the best i just want you all to know i will be trying it with the crower II's in a few months
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Old 05-18-2007, 12:04 PM   #32
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are talking about the 62502-2 or 62502T-2
http://www.crower.com/cat/domestic/f...amshafts.shtml

and what are the spec on SVT cams
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Old 05-18-2007, 12:22 PM   #33
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I think everybody is missing Toms point, He did say you can get up to 10 hp gain out of them but its not worth it to spend 350 on cams that will give you 10hp when all you have to do it turn the boost controller up 1 more psi for free. And maybe its worth that for SC people who cant turn up the boost any more.
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Old 05-18-2007, 02:34 PM   #34
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I myself would rather make more HP from efficiency than just crank up the boost and put more stress on the motor.
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Old 05-18-2007, 03:08 PM   #35
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1psi is not that much stressing it...also cams put more stress on valves and all the valvetrain.

btw Zx3'dUrSvt the pumpkin has a custom short runner intake manifold...pretty much everything on that car is custom.

i have to agree with Tom here....there is gains to be made...10-12bhp maybe...but turn your BC up one click and bam same difference. HP IS HP...not matter how you get it.
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Old 05-18-2007, 03:19 PM   #36
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Cams might have more gain if your making like 400 hp or more, but most people with a focus dont push their cars that hard.
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Old 05-18-2007, 03:41 PM   #37
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ya exactly....if your planning on pushing THAT much boost you should be replacing crap anyway
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Old 05-18-2007, 03:47 PM   #38
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Quote:
Originally Posted by turbozetec View Post
I think everybody is missing Toms point, He did say you can get up to 10 hp gain out of them but its not worth it to spend 350 on cams that will give you 10hp when all you have to do it turn the boost controller up 1 more psi for free. And maybe its worth that for SC people who cant turn up the boost any more.
I understand why spend $300-$400 for 5-10 hp

I want my rpm range to be 3000-7000 rpm

I have Crower stage 2s right now new in the box
and I'm building a motor I dont want to take the
cams out of my stock because I'm going to leave it the way it is.
So if I use stock cams I'll have to buy some.What do stock cams cost.

I bought both crane cams for $219
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Old 05-18-2007, 03:54 PM   #39
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As I am currently undertaking an FI project, I have been researching all kinds of options. I have crossed the cam issue myself, and decided to try the Crower 1's, as it is my belief one of the main purposes I want the cam for is to assist spooling the turbo sooner.

The stage 2 turbo grinds apparently have very similar powerbands when compared to the popular choices for turbos out there which makes for parts complimenting one another for those looking to make 275 and up whp.

The why spend it if you don't have to line of thinking naturally has merit. This stuff''s not cheap, nor any type of invenstment to make your money back on. So why spend it?

Well, more boost is more stress, but if you're in this with stock low ends, then the ceiling is achievable rather quickly. So, you should be built to take the inevitable. Thus the stress threshold costs money too (i.e turning up the boost).

Stock cams have been proven their value. They are a known commodity.
This, it is my belief, is more due to performance budgets than anything else.
I like many have followed the Focus FI story over the years and can attest
to the dollar/cost prohibiting factor as always being an issue. Yes, today we have a few good kits out there thankfully, and because of the leap in tuning technology, these kits come complete with base tunes to get you to a tuner.

And with technology comes those that dare to break barriers and set new standards for what is possible. And right here is where cams start becomming a player. Are they necessary....no. Do they offer a potential that has yet to be repetatively documented...no, atleast not publically. When few are testing the limits, secrets stay close to the chest. If more information becomes available as to the performance results with typical setups, then the proof becomes the driving force for further development to reach the next plateau.

Then there is just the basic " I want to have cams". It may not make sense dollar wise, or combination of parts wise, but the exercise just has to be taken for some. And for those who do, it's their money and time to play with.
If knowledge is gained...and shared...then the mystery begins to be solved.

The starter of this thread asked a simple question. Yet no real answers, only the to cam or not to cam bench racing. Where is Ray or Randy or Karl or any of the other non-business owners who've spent their money and time?
Are there no results to be shared with the rest of us? I'd be willing to bet the first guy to step up with a good combination that has dyno numbers to prove it will open the wallets of many enthusiasts sitting on the sidelines waiting to hear if/what/how cams will affect their setups.

Are the profiles in production working or not? Someone must know something by now. Share it with the rest of us. That's all this thread is asking.

Last edited by HotRodWagon; 05-20-2007 at 08:00 PM.
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Old 05-18-2007, 04:18 PM   #40
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if you want your rpm range to be higher get a turbo with a bigger ar on the exhaust housing.
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