Ported head dyno number??
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From: Grand Rapids, MI
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We maxed the 60 lb injectors when we switched to E85, so we needed a way to raise the pressure so we could lower the duty cycle.
Last edited by Matt M; Jun 18, 2009 at 11:47 PM. Reason: Automerged Doublepost
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290.
Last edited by Matt M; Jun 18, 2009 at 11:52 PM. Reason: Automerged Doublepost
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well yes they ported my intake side.... but they ported it with like a 100 grit bits... its not really that smooth... now the exhaust is like glass...ill eventually post pics up..... the guys at south florida machine shop have been doin it for a really long time, ive seen there builds on s/c LS motors and they turn out to be beasts... and yes u cannot make the intake too smooth, u will loose some turbulence and not atomise the fuel properly... like i said, they told me if the tune is good, they believe i could see maybe 30+ hp gain... the exhaust ports r mini on this head
If the intake was ported too much, you'll probably be right back in the same i/e ratio as stock. GMR's race ported head is only ported on the exhaust side for a reason. A supercharged engine needs to have an exhaust that breathes, without blowing too much energy out the back.
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so how close can u get to this if u r running meth... it increases ur octane.... im not sure to about how much, but i know it increases it a good amount... wut r supporting mods??
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so wut ur saying is that making the intake ports bigger to gasket match isnt gonna make more power??? i dont see how that can be... i could understand the polishing part making somewhat of a diff, but i should still get some gains from this.... i would say like a 25-25 hp increase... (i hope)
Either way, in a supercharged engine, the exhaust flow is far more critical than intake flow. You can do a full on port job to the intake side, but the gains will be minuscule if the engine can not expel the right amount of exhaust after the combustion cycle.
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You know, gasket matching isn't the same as porting.... right?
Either way, in a supercharged engine, the exhaust flow is far more critical than intake flow. You can do a full on port job to the intake side, but the gains will be minuscule if the engine can not expel the right amount of exhaust after the combustion cycle.
Either way, in a supercharged engine, the exhaust flow is far more critical than intake flow. You can do a full on port job to the intake side, but the gains will be minuscule if the engine can not expel the right amount of exhaust after the combustion cycle.
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