bike power kit car

[mannion05]

i have got a blackbird engined kit car ,i have been told to use a small fuel pump from a honda 600 or 900 ,
the problem i have is that not being a bike nut like you lot i know nothing much about bikes , can somone tell me if this pump on the bike is mounted with the out lets facing down or up and will it matter if i mount it on its side, please help

[DennisTheMenace]

the pump for my zx6 is on its side above the engine , it shouldnt matter where you mount the pump.

[Incorrigible]

I'm a bit out of touch on bike engines

Has the BB engine got fuel injection ?? If not any low pressure fuel pump will do

I was under the impression that FI needed a matching pump though

Why don't you just get one for a blackbird, bound to be the right one then

[barry sheene]

yup, BB's have been electrickeried since the 99 model IIRC.

[danhay]

I've got a Carb'd Blackbird, and the fuel pump goes up into the bottom of the fuel tank if that helps?

[fergus]

take the tank off a blackbird and then listen for the ticking sound that the fuel pump will make. On an R1, it just sits infron of the battery under the seat...

As long as the pump can deliver sufficient flow to supply the demand of the injectors at their maximum duty cycle you should be OK. You probably need to know how much the injectors can flow and go from there. The pump itself should be able to be mounted any way up - all it's doing is drawing fuel from one source and forcing it under a degree of pressure to another source...

You need to make sure you won't be in a situation where the injectors are trying to flow fuel and can't supply enough, as your mixture will lean right off when you probably don't need it, resulting in very high temps and holed pistons, etc, etc....

Phone somelike like Holeshot racing in Leeds and ask for their advice, or James Whiting (manfr of Caterham fireblade) - you really can't afford crap advice on this one my friend...

[mannion05]

fergus said:

take the tank off a blackbird and then listen for the ticking sound that the fuel pump will make. On an R1, it just sits infron of the battery under the seat... As long as the pump can deliver sufficient flow to supply the demand of the injectors at their maximum duty cycle you should be OK. You probably need to know how much the injectors can flow and go from there. The pump itself should be able to be mounted any way up - all it's doing is drawing fuel from one source and forcing it under a degree of pressure to another source... You need to make sure you won't be in a situation where the injectors are trying to flow fuel and can't supply enough, as your mixture will lean right off when you probably don't need it, resulting in very high temps and holed pistons, etc, etc.... Phone somelike like Holeshot racing in Leeds and ask for their advice, or James Whiting (manfr of Caterham fireblade) - you really can't afford crap advice on this one my friend...

thank you for your comments it has been most helpful ,

[dannylt]

fergus said:

As long as the pump can deliver sufficient flow to supply the demand of the injectors at their maximum duty cycle you should be OK.

Err, no. The pressure is rather crucial, since this determines how much fuel actually gets injected in the periods the injector is open. Hence bodges to increase fuelling for FI engines via adjustable pressure regulators and the like. I'd get one off off the same model BB for sure - how come it didn't come with the engine?

[fergus]

Mate

It shouldn't matter,because you can normally adjust the pressure coming off the fuel rail - which is after the pump. You can then use a lambda sensor to ensure the fuelling is spot on when you map the thing on a rolling road.This will let you know if you're running rich or lean, etc. The amount of fuel can then be metered through the opening cycle time of the injectors. At least this way, you know you won't run lean on max cycle.

all IMHO...