Originally posted by T. Cotten
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Your heads appear to not be OEM Panheads, Freeman,..
The intake ports and valves may be much more like a Shovelhead.
But that does not mean your Zenith Bendix carburetor is a poor choice, if all is in order. It should perform stronger than a Panhead.
Does the motor balk and run poorly?
....Cotten
Last edited by T. Cotten; 11-17-2021, 12:23 PM.AMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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Originally posted by T. Cotten View PostYour heads appear to not be OEM Panheads, Freeman,..
The intake ports and valves may be much more like a Shovelhead.
But that does not mean your Zenith Bendix carburetor is a poor choice, if all is in order. It should perform stronger than a Panhead.
Does the motor balk and run poorly?
....Cotten
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Your V-TWINⒸ label only describes the replica motor cases, Freeman...
It tells us nothing of the internal components, nor the heads themselves. A hand covers the exhaust port in your photo of the motor, but I suspect it is Shovelhead design as well.
(They are not accurate "replicas", but modernized hybrids between Panheads and Shovelhead designs.)
Still, it should run strong if all things are in order.
So let us first apply a diagnostic test to be certain there are no vacuum leaks that might mimic a fuel-starved condition: http://virtualindian.org/11techleaktest.html.
Testing while installing your manifold will prevent over-tightening of the clamps; Please avoid any clamps with larger than a #10 screw fastener.
If zero bubbles are produced at a constant, regulated 15psi (1 atmosphere) of pressure, we can move on to other possibilities.
....CottenAMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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Freeman
Appears you have S&S engine model P3
Per: S&S site:
"The S&S P93 features:- Designed for stock or custom 1948-1964 Harley-Davidson® generator style chassis
- Super E carburetor
- Heads are a new design based on S&S heads for shovels"
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I'm really not familiar with modern carbs, Paul,...
But I know that is not a Super E in Freeman's photos.
It is a Bendix that might need a new accelerator pump and boot, but beyond that I know little of them (except for a few rebuild kits in my dead inventory).
....CottenLast edited by T. Cotten; 11-18-2021, 01:55 PM.AMCA #776
Dumpster Diver's Motto: Seek,... and Ye Shall Find!
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Freeman do you know the jet sizes in your carb? Based upon what you described, the main jet may be too small for your 93" motor. Also float level may be low, contributing to lean at high rpms.AMCA #41287
1972 FX Boattail Night Train
1972 Sportster project
1971 Sprint SS350 project
1982 FXR - AMCA 99.25 point restoration
1979 FXS 1200 never done playing
1998 Dyna Convertible - 100% Original
96" Evo Softail self built chopper
2012 103" Road King "per diem"
plus 13 other bikes over the years...
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