Intake length vs torque, Just anthoer carb question No boobs |
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Intake length vs torque, Just anthoer carb question No boobs |
Joe Ricard |
May 18 2005, 02:03 PM
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#21
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CUMONIWANNARACEU Group: Members Posts: 6,811 Joined: 5-January 03 From: Gautier, MS Member No.: 92 |
So I have short intakes and 44IDF's with 38mm vents
How long of an intake should I go to with these carbs or should I go to 40 IDF's with 32 vents or 28 vents. I have some longer runner intakes and the other carbs so it's just a matter of experimenting I guess. 2.0L Bus piston Web 86B portmatch intake and exhaust ports. 13lb flywheel Bursch SSI Car weighs 1965 lbs 205/50-15 Kumho V700 R tires. Thought of playing with spacers under the carbs to get more length and maybe spacer under the common length velocity stack. Looking for more torque down lower to pull harder exiting the apex of tight AX turns. Whose got the experience of really been there done that? great gains or don't bother. |
SGB |
May 18 2005, 07:49 PM
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#22
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just visiting Group: Members Posts: 4,086 Joined: 8-March 03 From: Huntsville, AL Member No.: 404 Region Association: South East States |
Personal experience:
really really short intake = never get below 3400 rpm or there is no torque. Motor just flys from 4000 to 6000 really long intake = plenty of pulling as low as 2000 rpm, not as quite as quick getting to redline. For street and AX, I'd use long ones. For runoffs or high speed tracks, use shorties. I would also use the 40 idf carbs for higher flow speed to get quicker on/ off throttle response.. Put those phenolic heat resistant spacer 'tween head & manifold, too. I left 'em out when I switched and under the right (wrong) conditions ( 200 miles, then stop, then restart 3 minutes later) I had some burbling and gurgling from the vapor mix in the hot manifolds, Seems to have been eliminated by heat spacers. |
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