Fuel pump help

[nsa]

My car came with an aftermarket Airtex E8000 fuel pump:



It's only 18 months old but is already very noisy, even when isolated from the bracket. It sounds like the bearings have gone. It's a very cheap unit ($70) and I'd like to upgrade it, but have tied myself in knots learning about flow rates and pressures.

I gather these are the important specs:

GPH (Free Flow)30
Max Pump PSI (Not System) 70-95

Am I correct in thinking I should stick to these values when buying a new pump, and that I should be able to buy adapters to sort the rest? What flow rate/PSI can I go up to?

Hose barb inlet Size .470
Pipe threaded outlet M12 x 1

This is the car:



It's a 1977 TE61 Trueno, using the 2T-GEU 1600 DOHC engine with Bosch K-Jetronic fuel injection. The same engine configuration was used in a 1983 Celica (GT?). The previous owner approached Bosch for help but didn't get much back. I want to see if I can get some advice here before walking into my Toyota parts dealer in Hong Kong. The car isn't used on track and isn't even driven that fast around here.

Thanks.

Edited by nsa on Monday 7th September 06:38

[stevieturbo]

Info is a little vague on actual use, but it almost sounds like you're using what looks like an internal pump, for an external application ?

[Pumaracing]

A road engine at WOT will consume approx 30 lt/hr (6.7 imperial gallons/hr) per 100 bhp and I doubt if your engine has much more than that. Even the smallest FI pumps can normally supply about 250 bhp and sufficient pressure to run any type of FI system. Basically anything that will fit will do.

[nsa]

Thank you very much both. The pump is externally mounted but I think it's intended to be that way. Noted David, that's exactly what I wanted to hear.

[stevieturbo]

nsa said:

Thank you very much both. The pump is externally mounted but I think it's intended to be that way. Noted David, that's exactly what I wanted to hear.

As you want push on fittings, just buy any cheap pump from an old Golf GTI, Cavalier SRi, Metro turbo etc etc

Whilst this is undoubtedly a cheap copy, you get the idea.

It's convenient in having either a 10/12mm pump inlet ( may vary on actual pump fitment ) and 8mm barbed pump outlet.

http://www.ebay.co.uk/itm/Fuel-Pump-0580464038-0-5...

http://www.ebay.co.uk/itm/AUSTIN-METRO-1-3-TURBO-1...

ensure there is filtration of some description ( adequate for the flow involved ), pump has a good gravity feed at all times.

[Pumaracing]

I'd go for screw on electrical connectors like the first Stevie linked to rather than spade terminals. Another good external pump is the Ford Xr3i one.

The most important thing is to have a good filter located between the tank and the pump. It's rust particles or other crap from the tank that will kill a pump fastest. Again, any inline filter will do.

[stevieturbo]

Pumaracing said:

I'd go for screw on electrical connectors like the first Stevie linked to rather than spade terminals. Another good external pump is the Ford Xr3i one.

The most important thing is to have a good filter located between the tank and the pump. It's rust particles or other crap from the tank that will kill a pump fastest. Again, any inline filter will do.

For a full flow efi setup, any filter will not do when it is installed prior to the pump. It must have adequate capacity to cope with the flow in a gravity fed situation. So it needs to be a decent size, with correct size fittings in/out.

[Pumaracing]

You're quite right. Mea culpa. The OE type filter would normally be downstream of the pump and the pump should have a little mesh strainer in it somewhere to keep the rocks out.

[nsa]

New external Bosch 580 254 911 pump sourced for £60 and fitted with a new clear fuel filter between pump and fuel tank. The old filter had a lot of rust in it and I suspect it was much older than the noisy pump. Fuel runs clear through the new filter.

Thanks again.