Ok right....you'll all be getting fed up of this now! but.....still on the trail of a motor bike fuel pump and struck across a genius idea (well maybe!) I've got a zx7r pump that works but the points are fecked and threw themselves across the workshop shop so dismissed it as knackered but....would there be any real problem with running it without the points??? eg just attach the wires up?? Well it generate too much pressure for the bike carbs like this or will it prob be on all the time anyway what with it being on a pinto an all?? Plus its gonna be pumping fuel alot further than usual aswell??? Any advice much appreciated as it would save me £25 + postage on a new one! Cheers Oli.
Plenty on ebay for less than £25
http://cgi.ebay.co.uk/Kawasaki-ZXR750-J-1992-fuel-pump-tap-hoses_W0QQitemZ8034871180QQcategoryZ10464QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/ZX7R-Fuel-Pump_W0QQitemZ8035856080QQcategoryZ10464QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/gpz1100b1-fuel-pump_W0QQitemZ8035889252QQcategoryZ25643QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/Kawasaki-ZX6R-F3-Fuel-Pump-ZX6-R-ZX-6R_W0QQitemZ8035179006QQcategoryZ10464QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/yamaha-r6-5eb-model-fuel-pump_W0QQitemZ8036115506QQcategoryZ10490QQrdZ1QQcmdZViewItem
http://cgi.ebay.co.uk/Yamaha-Thundercat-600-fuel-pump-in-good-condition-1998_W0QQitemZ8036741020QQcategoryZ10490QQrdZ1QQcmdZViewItem
you don't need a big bike pump even one from a 600cc bike should be OK.
don't do that! lol...I'm bidding on one of them! hehehe! Well just figure I've got this one anyway and the facet ones are constantly pumping and maybe the carbs will use that much fuel anyhow.......Cheers for the linkys though....Oli.
You need the pump to cut out when the needle valves shut. My old facet pump (even with the regulator set to min) kept flooding my honda blackbird carbs. Swapped to an R1 fuel pump and the problem has gone.
So you reckon even with a motor bike fuel pump I'll still need it to shut off all the time??? Can't help but think that once its running the pump will never need to stop since there wont be any gravity feeding the carbs at all.....Oli.
yep, will still need to shut off
I was going to use my pinto pump. Not now by the looks of it.
I am using GSXR carbs from a 600 SRAD.
1. What pump should i use ?
2. Is it a easy fit?
3. How does the pump know when to cut out (when the needle valves shut)?
Sorry about the questions.
Cheers Nige
The pump "knows" due to the back pressure.
You can use your pinto pump, but you'll need a pressure regulator to knowck the pressure down on the carb feed.
you have to use an y pease ,from the upper legs one to the carbs and the ather to the return of the tank
If you provide a fuel return then you can use a constant flow pump (better to allow a return pipe in the build for when you go injection at some
point) to feed them carbs.
All you then need is a restriction within the return pipe to regulate the pressure (the carb feed effectively becomes a fuel rail).
I used to run v8 rover on carbs using a v12 jag EFI pump without any problems, and that pump could throw petrol out at a fightening rate.
Regards Mark
The pump wont pump without the points, they are used to operate the solenoid to move the diaphram so are an essential part of it.
Paul.
quote:
Originally posted by cryoman1965
I was going to use my pinto pump. Not now by the looks of it.
I am using GSXR carbs from a 600 SRAD.
1. What pump should i use ?
2. Is it a easy fit?
3. How does the pump know when to cut out (when the needle valves shut)?
Sorry about the questions.
Cheers Nige
If you only need roughly the same pressure as the good ol' SU carbs, you could always use one or two of the old su fuel pumps. One of the Minor
jobbies is capable of anything upto 100bhp(ish) a pair should be twice that. And they're reallt cheap. I brought a pair for £20. and then
didn't use them since my stancard fuel pump seems happy with the load at 150bhp!!!
"All you then need is a restriction within the return pipe to regulate the pressure (the carb feed effectively becomes a fuel rail). "
My plan exactly, using original fiat recirculating system with y junction to carbs and variable restriction on the return pipe.
Iain