Hi Guys

Need some advice regarding the fuel pump for a Blackbird Injection.

Seems that most people recommend using the bike pump with BEC's. However, The Bird Injection uses an "in tank" pump! Does anyone know if this pump could be used externally, or does it need to be in the fuel to keep it cool?

I have the bike pump so would like to use it if possible. Has anyone had a tank made that uses the standard bike pump and flange? (Guess it would need some sort of sump arrangement to mount the pump into.

If not, can anyone recomend a direct replacement external pump (i.e. retaining the standard fuel pressure regulator etc.)

Many thanks

Mike

I don't think it would be a good idea to use petrol as a coolant . If it was going to get hot it would not be much use to pump highly flammable liquid.

Thanks for your comment Paddy.

I was told many moons ago when fuel injection was becomming popular in normal cars that the fuel pump had to be imersed in fuel as this was used to disipate the heat generated. If it was'nt imersed it would burn out.

It,s only petrol vapour that is highly inflamable, so it should not be a problem.

Thanks again

Mike

I think the blackbird pump is the same type as fitted to the injection blade,ie fits to the bottom of the bike tank with a big flange and rubber seal,I have fittedthis type in the bottom of my tank on my mk blade (injection 2001) with no problems.

quote:

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Originally posted by Mike S
Thanks for your comment Paddy.

I was told many moons ago when fuel injection was becomming popular in normal cars that the fuel pump had to be imersed in fuel as this was used to disipate the heat generated. If it was'nt imersed it would burn out.

It,s only petrol vapour that is highly inflamable, so it should not be a problem.

Thanks again

Mike

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I have a friend building a Lotus 23B replica (mid engined) with a blackbird engine and he is using the original fuel pump, but it is to be located in a surge tank (about 2liters I think). The fuel will be pumped through the surge tank from the main tank with a second low pressure fuel pump. This keeps the fuel injection pump fully submerged even if the main tank is suffering from surge due to cornering etc. Brian

I used the std blackbird pump fastened in the bottom of my tank. I did this because it creates a well at the bottom of the tank and helps to reduce fuel surge.

It was a bit of a pain to seal though because the rubber gasket has loads of holes in it. I made my own gasket without loads of cutouts in it. This worked fine.

Thanks for your comments guys.

Will retain original pump and either have a sump in the tank or go for the idea from Ratman, and have a separate surge tank.

Thanks again.

Mike

Well,

i didn't had the original fuel pump,

so i took a external one from a Sierra

including the bracket.

Every injection system has a Fuel pressure regulator

soow your fuel pumps power will be that of the regulator, more power will result in easy round pumping.

because of the fact that the fuel tank is allot more away from the engine in the locost cars en not above the engine (like in the bike) i think that that will compensate my extra power. had the engine running with this pump and it worked okay.

soow i think with 6meters fuel line (return included) it will work even better!

ahh i also tookoff the sierra's regulator near the pump one should be enough..

Regards..