Intake manifolds, aluminum or plastic
06-07-2006, 04:53 PM
#1
3rd Gear Member
Thread Starter
Join Date: Jan 2006
Location: Deerfield, VA
Posts: 674
Intake manifolds, aluminum or plastic
I know it's been discussed before but, for instance, the typhoon intake is aluminum, looks alot like a stocker, yet is claimed to produce 20HP more than a stocker. Are the runners larger than a stocker? Is the intake extrude honed, or cast in lost wax to provide a smooth surface inside? What I'm driving at is, a plastic intake can be made cheaper, insulates better against heat soak than aluminum, and already has smooth surfaces inside the runners. I'm not comparing to the P-51 intake which is radically different in design, but if you were sticking to NA, wo nitrous, couldn't a plastic intake reconfigured yield even more HP?
John
John
06-07-2006, 06:43 PM
#2
6th Gear Member
Join Date: Jan 2004
Location: United States
Posts: 12,575
RE: Intake manifolds, aluminum or plastic
ORIGINAL: 70 MACH I
I know it's been discussed before but, for instance, the typhoon intake is aluminum, looks alot like a stocker, yet is claimed to produce 20HP more than a stocker. Are the runners larger than a stocker? Is the intake extrude honed, or cast in lost wax to provide a smooth surface inside? What I'm driving at is, a plastic intake can be made cheaper, insulates better against heat soak than aluminum, and already has smooth surfaces inside the runners. I'm not comparing to the P-51 intake which is radically different in design, but if you were sticking to NA, wo nitrous, couldn't a plastic intake reconfigured yield even more HP?
John
I know it's been discussed before but, for instance, the typhoon intake is aluminum, looks alot like a stocker, yet is claimed to produce 20HP more than a stocker. Are the runners larger than a stocker? Is the intake extrude honed, or cast in lost wax to provide a smooth surface inside? What I'm driving at is, a plastic intake can be made cheaper, insulates better against heat soak than aluminum, and already has smooth surfaces inside the runners. I'm not comparing to the P-51 intake which is radically different in design, but if you were sticking to NA, wo nitrous, couldn't a plastic intake reconfigured yield even more HP?
John
Unless you plan on building the motor and the shortblock, or you have a blower/turbo car, you will not see large gains by switching out to a aftermarket intake manifold, and you will almost certainly loose power on the bottom end of the curve.
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