Might the T shaped connecting be an unobvious helper for wet flow, sweeping curved runners look the part but separate fuel from airflow no matter how gentle the curve (assuming that's true) do the factory manifolds have the abrupt corners to get the fuel resuspended ?
Diesel dry flow DP manifold is more sweeping.
Dual Plane T shaped runners
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Dual Plane T shaped runners
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Ignorance leads to confidence more often than knowledge does.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Re: Dual Plane T shaped runners
I believe these (OEM like) intakes are like they are to create the longest possible (effective) runner length for a dual plane.
The effective tuned resonant length is a sum of the lengths of the combined runners of each plane .
This maxes the intended overall torque range.
These intakes employ plenum heat and ribbed plenum floor to aid vapourization to help fuel distribution for the intended purpose.
These intakes create 2 separate resonant peaks to create a broader overall yet high torque power band.
A bit different than a single plane intake manifold.
Works best on V8 style engines for that dual resonant peaks in the usable power band.
There is a name for it.. "4th order butterworth" or something... Somebody smart will know.
The effective tuned resonant length is a sum of the lengths of the combined runners of each plane .
This maxes the intended overall torque range.
These intakes employ plenum heat and ribbed plenum floor to aid vapourization to help fuel distribution for the intended purpose.
These intakes create 2 separate resonant peaks to create a broader overall yet high torque power band.
A bit different than a single plane intake manifold.
Works best on V8 style engines for that dual resonant peaks in the usable power band.
There is a name for it.. "4th order butterworth" or something... Somebody smart will know.
Re: Dual Plane T shaped runners
So the Diesel went for a short runner ?F-BIRD'88 wrote: ↑Fri Nov 25, 2022 10:11 pm I believe these (OEM like) intakes are like they are to create the longest possible runner length for a dual plane.
The effective tuned resonant length is a sum of the lengths of the combined runners of each plane .
This maxes the intended overall torque range.
These intakes employ plenum heat and ribbed plenum floor to aid vapourization to help fuel distribution for the intended purpose.
If the factory was chasing length they could have gone this way. no flattery for Edelbrock on this one, nobody copied it.
Then there's the extreme short long runner F4b manifold which makes me believe dual planes are far more about 180 degree separation than they are about runner length.
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Ignorance leads to confidence more often than knowledge does.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Nah, I'm not leaving myself out of the ignorant brigade....at times.
Re: Dual Plane T shaped runners
Diesel engines are turbo or supercharged. Not as much priority for a tuned resonant intake.