Thread: 640 Fuel Pump
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Old 07-26-2006, 10:27 AM   #5
creeper
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Joined: Dec 2003
Location: Puget Sound
Oddometer: 10,718
Quote:
Originally Posted by sdmdm8
Hey Creeper,

How does this pump work, since I dont see a return line to the tank I assume it is at a very low PSI.

Are there any provisions that would allow the use of an aftermarket pump on the bike in liu of the factory one ?
31 liters per hour is the rating for the DF52. They are not like a positive pressure electric pump where a regulator might be required.
Even a small Facet electric pump will flow 32 gallons per hour.

I found a aircraft parts house that has both Mikuni vacuum and Facet electric pumps for 1/3 to 1/4 the price KTM and other motorcycle related outlets want.
The Mikuni pumps listed (single and dual) do not appear to be direct replacements for the KTM/Mikuni pump, and might require a bit of fiddling, but for $20-$30... maybe you can afford to fiddle.

In the event my pump takes a dump... I may experiment with a small Facet and an adjustable regulator. The float needle and seat on a BST40 for an Adventure is not a standard gravity flow item, but rather made for a low pressure line, (maybe why its $40) so if you could adjust pressure down to 1-2 psi, it should work. All an edjumacated guess on my part... but I tend to like Facet electric pumps and have used them extensively in the past, on bizzarro applications better not discussed here, with good success.

That really is all I have this time... really.
C
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