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09-04-2010, 07:18am
Have you got your own flow bench Leonard ?
I do not.
Gen 1 ported intake This motor made 200rwhp stock bore.
.100 80.4
.200 159.5
.300 223.0
.400 246.5
STOCK GEN 2 Intake
.100 85.9
.200 163.3
.300 224
.400 244
.435 247 ( retainer hits guide)
American Busa engineer's porting Intake Gen 2
.100 87
.200 165.8
.300 230.7
.350 254.1
.400 266.1
.435 268.5
If one cylinder is down on power, with CNC machining, they know it is not the porting and that takes a variable out of the equation---however----if your doing it by hand porting tools---just CC each port, then trim em all up to the highest port CC number.
Pity the Thai Head Polisher has gone on holidays
This Busa was a 300 rwhp S & R Pro Intercooled Turbo.
Hardly a Pig Magnet due to the exhaust stack. After all, how could they complain, more volumetrcly efficient, more economical, low emmisions.
Unfortunately, it went to Heaven
& the rider went to hell. Not quite back yet though
[attachment=9303]
[attachment=9304]
I do not.
Gen 1 ported intake This motor made 200rwhp stock bore.
.100 80.4
.200 159.5
.300 223.0
.400 246.5
STOCK GEN 2 Intake
.100 85.9
.200 163.3
.300 224
.400 244
.435 247 ( retainer hits guide)
American Busa engineer's porting Intake Gen 2
.100 87
.200 165.8
.300 230.7
.350 254.1
.400 266.1
.435 268.5
If one cylinder is down on power, with CNC machining, they know it is not the porting and that takes a variable out of the equation---however----if your doing it by hand porting tools---just CC each port, then trim em all up to the highest port CC number.
Pity the Thai Head Polisher has gone on holidays
This Busa was a 300 rwhp S & R Pro Intercooled Turbo.
Hardly a Pig Magnet due to the exhaust stack. After all, how could they complain, more volumetrcly efficient, more economical, low emmisions.
Unfortunately, it went to Heaven
& the rider went to hell. Not quite back yet though[attachment=9303]
[attachment=9304]