Kelford IX Cams
Jun 26, 2008, 12:05 PM
#17
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The FP4R and Kelford 272's were the two cams I was debating between myself. I ended up with the Kelfords mainly because of the FP4's being on backorder. So far I am very pleased with them.
SQ
SQ
Jun 26, 2008, 01:50 PM
#21
I just heard back from Kelford:
Hi Chris,
The 272 is the right choice to get the most out of the stock turbo.
Yes, these will run on the stock spring and retainer, your rpm will be
restricted by the turbo well before it is restricted by the valve spring.
Thanks
Kevin
Hi Chris,
The 272 is the right choice to get the most out of the stock turbo.
Yes, these will run on the stock spring and retainer, your rpm will be
restricted by the turbo well before it is restricted by the valve spring.
Thanks
Kevin
Jun 26, 2008, 02:32 PM
#22
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A stock Evo 9 US Spec valve spring on the exhaust side has the following specs.
60# @ the Seat
125#@ .300 lift
140# @ .400 Lift
150# @ .450 Lift
165# @.450 lift
and Coil Bind at .460
most don't run tighter than .040" to coil bind putting that at .420 lift or 10.67MM
Running 11mm's of lift on the exhaust side of a stock spring wouldnt be my idea of "playing it safe" spend the $230 and buy some springs.. it might just save you some in the long run ;-)
60# @ the Seat
125#@ .300 lift
140# @ .400 Lift
150# @ .450 Lift
165# @.450 lift
and Coil Bind at .460
most don't run tighter than .040" to coil bind putting that at .420 lift or 10.67MM
Running 11mm's of lift on the exhaust side of a stock spring wouldnt be my idea of "playing it safe" spend the $230 and buy some springs.. it might just save you some in the long run ;-)
Jun 28, 2008, 07:10 PM
#27
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Going to throw a curve ball and ask about where the Cossie 272's rank in with these 3 bad boys...
Tom, I too have done some research and your findings are identical with what I am finding as well. Depending on what is said about my question above, I may be switching over to the FP4R. I am going green on the SE with an AEM, so I have been watching you and your son like hawks lately...
-E
Tom, I too have done some research and your findings are identical with what I am finding as well. Depending on what is said about my question above, I may be switching over to the FP4R. I am going green on the SE with an AEM, so I have been watching you and your son like hawks lately...
-E
