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Flameout54 · 05-25-2011, 02:31 PM

Hi there,
I have a 1992 Honda VT 1100C shadow spirit and I would like to know if anybody has bypassed there fuel pump and just gone right to the carbs.

The_AirHawk · 05-25-2011, 02:49 PM

You can do so - but you will experience a shortened range. The reason the bike has a fuel-pump is, part of the fuel in the tank is either below the carbs, or sufficiently low-enough that gravity-flow to the carb bowls is seriously hampered.

If you're having trouble with the pump and/or relay, and the OEM-replacement is too expensive for your taste - look for a "generic" relay or low-pressure electric pump, or replace it with vacuum-powered pump. All the vac-pump needs is a small port between the carb and cylinder-head. Many moto-manufacturers use them - the first-generation Suzuki SV comes immediately to mind.

05-25-2011, 02:31 PM	#1
Flameout54 Registered Member Join Date: May 2011 Posts: 3	Fuel pump Hi there, I have a 1992 Honda VT 1100C shadow spirit and I would like to know if anybody has bypassed there fuel pump and just gone right to the carbs.

05-25-2011, 02:49 PM	#2
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	You can do so - but you will experience a shortened range. The reason the bike has a fuel-pump is, part of the fuel in the tank is either below the carbs, or sufficiently low-enough that gravity-flow to the carb bowls is seriously hampered. If you're having trouble with the pump and/or relay, and the OEM-replacement is too expensive for your taste - look for a "generic" relay or low-pressure electric pump, or replace it with vacuum-powered pump. All the vac-pump needs is a small port between the carb and cylinder-head. Many moto-manufacturers use them - the first-generation Suzuki SV comes immediately to mind. __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now... Last edited by The_AirHawk : 05-25-2011 at 02:55 PM.

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