Injected Performance Cosworth Inlet Manifold REVIEW
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I also dont understand why people going for big power even waste their time with 262 or 264 cams. Only way I could see, is it they wanted more powe under the curve to sacrifice some topend gain.
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Originally Posted by thawk408
I also dont understand why people going for big power even waste their time with 262 or 264 cams. Only way I could see, is it they wanted more powe under the curve to sacrifice some topend gain.
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Originally Posted by DaveFunction2ND
Actually a fair amout of big HP Supra's and Evo's run 264/272, 264/264, and sometimes 272/272. There is no need for an overly agressive cam if the other components are put together to make top end power. That means the turbo need to be sized properly, the intake manifold need to be designed with high RPM harmonics in mind, and you have to run enough boost.
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Originally Posted by DaveFunction2ND
Actually a fair amout of big HP Supra's and Evo's run 264/272, 264/264, and sometimes 272/272. There is no need for an overly agressive cam if the other components are put together to make top end power. That means the turbo need to be sized properly, the intake manifold need to be designed with high RPM harmonics in mind, and you have to run enough boost.
On a 350z I am not impressed by a 264 over stock.
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Originally Posted by Philthy
Unless you're running a big turbo(s) to support air flow at high rpms, big cams aren't the best choice... It's all about comprises and overall objectives...
for all those who think that "264" is wimpy and "280" makes you more cooler, do yourselves a favor and pick up a book on building engines - I promise you'll learn alot!
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Originally Posted by Z1 Performance
thank you!!
for all those who think that "264" is wimpy and "280" makes you more cooler, do yourselves a favor and pick up a book on building engines - I promise you'll learn alot!
for all those who think that "264" is wimpy and "280" makes you more cooler, do yourselves a favor and pick up a book on building engines - I promise you'll learn alot!
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Originally Posted by turismo
Yea but most of the high hp supras are making 75rwhp from cams and 100rwhp from an intake manifold alone, not 10rwhp!
Example:
500 ft/lbs@9000 RPM = 857.14...HP
add 10 ft/lbs = 874.28...HP
Delta = 17.14...HP
500ft/lbs@6000 RPM = 571.42...HP
add 10 ft/lbs (510 ft/lbs@6000 RPM) = 581.85...HP
Delta = 11.43...HP
A real word example is a car I helped my friend put together. NA Supra with JDM TT Motor Swap and 6SP conversion. With a GT74, HKS 264's, HKS Cam Gears, AEM EMS, Stock Intake Manifold, Heads and Motor it made over 700 DJ HP at ~28PSI and 8000 or 8500RPM redline. He just ran a 10.3 with stock NA suspension (great driver). He gained more power through turbo sizing, boost levels, and RPM's then he ever would have seen by upgrading to 272's.
Basically the point is that Peak HP is only useful information in the correct context and scale. The point of the Cosworth is so that we can make power above 7000 RPM's with properly sized turbos. A TT kit or large single kit is really going to show us the real delta.
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Originally Posted by Z1 Performance
thank you!!
for all those who think that "264" is wimpy and "280" makes you more cooler, do yourselves a favor and pick up a book on building engines - I promise you'll learn alot!
for all those who think that "264" is wimpy and "280" makes you more cooler, do yourselves a favor and pick up a book on building engines - I promise you'll learn alot!
Sorry, but 264s are small in the cam world. Not saying power can not be had, they are just smaller than I like.
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Originally Posted by rkd350z
until now, it's a bit of dissapointing
#178
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Originally Posted by Hal@IP
I would hardly call it disappointing, more like 'promising'. At a meager 6300rpm we are already witnessing 25+whp gain over stock, and more than 10whp gain over plenum spacer. I am looking forward to a 7000+rpm test, which should happen today or tomorrow.
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Originally Posted by thawk408
Yeah, I guess everyone else and I that like bigger then 264 dont know anything about engines . Its not about being cool its about top end power. For the turbos included in most of all the twin kits sold for the 350z a cam bigger then a 264 would be helpful to get all you can out of the "relatively small" turbos. But I guess I am in the minority that wants 20+psi and power climbing all the way to 7k.
Sorry, but 264s are small in the cam world. Not saying power can not be had, they are just smaller than I like.
Sorry, but 264s are small in the cam world. Not saying power can not be had, they are just smaller than I like.
Last edited by Z1 Performance; 12-19-2007 at 06:01 AM.
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I don't think the results are disppointing, I think they are interesting to say the least, and sets the groundfloor for what others suspected the manifold will do. I don't think this was designed with a stock motor in mind