When designing a manifold. Minus the countless possible hours of R&D. Is there a specific formula that you use when trying to design one. I have read and read and read. Is it really that detailed? Or are there some short cuts? Details like, Runner length, Runner I.D./O.D, Plenum Volume, CFM Velocity, Volumetric Efficiency, Displacement, Desired Powerband, N/a or F/I... etc.. etc... Just curious...
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Thread: Sheet Metal Intake Manifolds
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02-28-2013, 09:26 PM #1
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Sheet Metal Intake Manifolds
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02-28-2013, 11:22 PM #2
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Yes....there is that much to it. You cant just look at the manifold as a seperate unit, it is part of an entire system that includes valve lift profiles, combustion, etc etc.. There are lots of good texts on the subject that will get you 80% of the way there, the other 20% comes from experience.
Originally Posted by Smokeshow
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03-01-2013, 02:57 PM #3
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I have increased my studies as of late, on this topic. I have noticed some use trumpets/flares on the ends of tubing/intake runners. While others don't. Some weld the top of runners and leave them. Some weld the top of runners and machine them. From my reading, I have gathered that you are not supposed to have the runners side flush with the bottom of the intake. I am wondering if this is due to personal preferrence or actual knowledge of engines and air flow?
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