what cam's should i get for my 9?
If you retain your stock rev limiter, no, if you want to rev beyond 8,000 RPM, then yes. I personally feel 7,600 is a "safe" rev limit on an aggressive cam (Cosworth M2, Kelford 272, FP4R, etc.) with stock valve springs. If your head will be off for porting, head gasket job, or whatever else, then you might as well do the springs. If the head is staying on though and you want an easy drop-in affair then keep the stock springs. Don't forget to bleed your lifters!
thanks all
If you retain your stock rev limiter, no, if you want to rev beyond 8,000 RPM, then yes. I personally feel 7,600 is a "safe" rev limit on an aggressive cam (Cosworth M2, Kelford 272, FP4R, etc.) with stock valve springs. If your head will be off for porting, head gasket job, or whatever else, then you might as well do the springs. If the head is staying on though and you want an easy drop-in affair then keep the stock springs. Don't forget to bleed your lifters!
kelford them selves said to change out the springs.
the reason for doing cams is to gain overall tourqe and hp throughout your entire power....and to gain MID range - TOP range.
not being able to rev the car out is pointless in doing cams then....
do the springs so your safe, an tune the car to rev to 8k.....running the kelford 272's will take the tourqe curve and send it horizontal or upwards in the higher rpms on a dyno graph.....compared to stock cams which head south the higher RPM range you reach.
IMHO...theres no point in doing cams without doing springs. The head of an evo is where the power lies....and skimping out on a cheap mod is pointless....because in some cases can cause some serious damage.
and the kelford 272's are nasty cams....specs dont give them much respect you have to here these baby's installed on a IX....there a wicked cam and work awsome with the stock turbo....best cams by far for a stock IX turbo.
Cossi M2's and FP4R's ppl do run on stock springs but like i said IMO its pointless.
Last edited by EvoDom; Jun 3, 2009 at 07:26 PM.
evo IX you can only change one (1) cam gear....and thats the exhaust cam gear.
the intake cam has to be adjusted (advanced or retarted) threw the Mivec in the computer by a tuner.
the intake cam has to be adjusted (advanced or retarted) threw the Mivec in the computer by a tuner.
Three problems with this post. One on paper they're similar, but in actuality are completely different (call Kelford yourself). Two, the VIII cams and IX cams are the exact same grind, with the only difference being the Mivec groove on the intake side to make them fit, and properly work on a IX head (in other words, think of it as a modded VIII cam if need be). Three, not ONE post I have seen where the cossies have outperformed the Kelfords. Matter of fact there's not one 272 cam the Kelford's didn't outperform. They won AMS' cam shoototut for a reason (which should only be used as a reference, since the head was ported/built, real world results on a stock head with a stockish turbo are obviously a lot less marginal). They are also now made in the same exact billet core as the 4R's and 5R's.
Three problems with this post. One on paper they're similar, but in actuality are completely different (call Kelford yourself). Two, the VIII cams and IX cams are the exact same grind, with the only difference being the Mivec groove on the intake side to make them fit, and properly work on a IX head (in other words, think of it as a modded VIII cam if need be). Three, not ONE post I have seen where the cossies have outperformed the Kelfords. Matter of fact there's not one 272 cam the Kelford's didn't outperform. They won AMS' cam shoototut for a reason (which should only be used as a reference, since the head was ported/built, real world results on a stock head with a stockish turbo are obviously a lot less marginal). They are also now made in the same exact billet core as the 4R's and 5R's.
Cosworth cams have never run head to head with Kelford Cams in any test.
Cosworth and Kelford will produce similar numbers on the stock turbo.
Kelford makes the cams that many manufacturers rebrand as their own cam.
Kelford 272's do not require springs and retainers on an Evo 8-9. It is a good idea though if you are in there to throw a set of supertech singles in there.
We have Kelford, Cosworth and Supertechs in stock if anyone is interested.
Hmm. Maybe I was misinformed. If that's true why are VIII exhaust cams compatible?
Cosworth cams have never run head to head with Kelford Cams in any test.[/quote]
My point.
Cosworth and Kelford will produce similar numbers on the stock turbo.
Agreed.
Kelford makes the cams that many manufacturers rebrand as their own cam.
Maybe but it ain't Cosworths (taken straight from the horses mouth).
Kelford 272's do not require springs and retainers on an Evo 8-9. It is a good idea though if you are in there to throw a set of supertech singles in there.
We have Kelford, Cosworth and Supertechs in stock if anyone is interested.
Cosworth cams have never run head to head with Kelford Cams in any test.[/quote]
My point.
Cosworth and Kelford will produce similar numbers on the stock turbo.
Agreed.
Kelford makes the cams that many manufacturers rebrand as their own cam.
Maybe but it ain't Cosworths (taken straight from the horses mouth).
Kelford 272's do not require springs and retainers on an Evo 8-9. It is a good idea though if you are in there to throw a set of supertech singles in there.
We have Kelford, Cosworth and Supertechs in stock if anyone is interested.
Last edited by SRT-TO-EVO; Jun 3, 2009 at 11:30 PM.
You could get a ported intake mani, exhaust mani, o2 housing all for the prices of cams. You could also do suspension mods or a clutch. Or save the money and put it towards a turbo in the future.
VIII and IX cams are not ground the same.
Cosworth cams have never run head to head with Kelford Cams in any test.
Cosworth and Kelford will produce similar numbers on the stock turbo.
Kelford makes the cams that many manufacturers rebrand as their own cam.
Kelford 272's do not require springs and retainers on an Evo 8-9. It is a good idea though if you are in there to throw a set of supertech singles in there.
We have Kelford, Cosworth and Supertechs in stock if anyone is interested.
Cosworth cams have never run head to head with Kelford Cams in any test.
Cosworth and Kelford will produce similar numbers on the stock turbo.
Kelford makes the cams that many manufacturers rebrand as their own cam.
Kelford 272's do not require springs and retainers on an Evo 8-9. It is a good idea though if you are in there to throw a set of supertech singles in there.
We have Kelford, Cosworth and Supertechs in stock if anyone is interested.
Getting back on topic: I went with Cosworth M2s because I got a great deal on them. You can't go wrong with Kelfords or Cosworths to be honest. Seems like Kelfords are the latest "trendy cams" to run though...
Three problems with this post. One on paper they're similar, but in actuality are completely different (call Kelford yourself). Two, the VIII cams and IX cams are the exact same grind, with the only difference being the Mivec groove on the intake side to make them fit, and properly work on a IX head (in other words, think of it as a modded VIII cam if need be). Three, not ONE post I have seen where the cossies have outperformed the Kelfords. Matter of fact there's not one 272 cam the Kelford's didn't outperform. They won AMS' cam shoototut for a reason (which should only be used as a reference, since the head was ported/built, real world results on a stock head with a stockish turbo are obviously a lot less marginal). They are also now made in the same exact billet core as the 4R's and 5R's.
The Keflord/FP billet is not suppiour to my billet.. it's now infiriour do to metalury consistancy and quality.
as far as a 272 size cam out performing the evo 9 Kelford 272 ill take that chalange any day of the week. I wish AMS had gotten our 230 Evo 8 S2's instead of the 228s that were in the test. but i didn't understand when martin asked for the cams what he was doing..
the biggest problem i see with this whole thread is lack of information. every cam maker on this thread is good. FP, Kelford, Cosworth, GSC. If you buy any of those names your going to get a great set of cams that will preform extremely well. now as far as who is the "best" would truly depend on the setup or application.