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Hi guys. Converting my bike to fuel injection, and am stuck at the pump. Anyone know of an external efi pump the would be readily available at pick-a-part and not draw a ridiculous amount of current?
Most of the bike ones i've seen have been in-tank designs, and i'd rather not chop into mine.
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You can buy universal fit external EFI pumps from anywhere - just buy a known brand for reliability
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Thanks misc - i'll have a look around, but I have a feeling that they're going to be expensive.
I'm broke.
The more common pump I though of was perhaps a commodore or astra unit - are they in tank or external, and does anyone have any figures on ho
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VK, VL & VN pumps are common, cheap, and externally mounted, but they are quite large & bulky, so may not be that great on a bike (they also suck current as they pump enough flow for 3-400hp!
Cheers,
Mick
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Cheers,
Mick
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I agree with what mick has written but would also add XE & XF EFI Falcon wagons to that list as they have the same external pump.
Volvo 240's of the late 70's with Bosch K jetronic injection had an external pump but it would be way too high a pressur |
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too high pressure for EFI?
what pressure would that be.
some of the little jap cars have external pumps, and they wouldn't be too big.
im not sure which ones exactly, maybe starlets, echo's, excel's, charades's etc?
VN
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From memory the VL type will flow around 115-145 ltrs/hr at anywhere from 65-108psi? (ashdown VL replacement pump spec's)
Normal rule for roady is a flow rate = to what ever size motor eg: a 900cc will need to flow at the least 900ml-1ltr per min (60ltrs
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From about 93 most jap/korean cars had efi so a pump from one of them would probably be small and some would likely be external. I am pretty sure the Swift/Barina had a pump just near the left rear wheel.
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I've put an ihirhb32 onto a cbr250, with megasquirt controlling fuel injection (and later spark). Just stuck at the pump and tuning it now.
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Remember seeing a 998 mini with the Hb4 setup, think it was putting out 10psi no problems...... b32 should scream on a 250!!
Did the mega squirt come with any info as in suggested flow rates/psi? or do you know what the regulator pressure is set at?
May
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quote:
Originally posted by fatboyvncalaisv8
too high pressure for EFI?
what pressure would that be.
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Hi Guys.
That is correct, normal EFI Bosch L-Jetronic type systems run at 2.5 to 3 Bar (38 to 45 psi).
K-Jetronic systems run at 4 to 7 bar & more (60 to 105 psi). A test for for the max output on a K-Jetronic pump will see up to 10 Bar (150 psi).
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my stock VN pump runs a touch under 100psi with no pressure regulation.
it was like that when i bought the car.
i didn't realise untill i fitted a fuel pressure gauge and thought "thats not right!" ,my splitfire bonnet mount gauge only went to 100psi?
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Just picked up a Kawasaki internal pump - not too big, and easily within the range I need. Just going to fabricate a new tank and make up a fibreglass cover like the bigger Hondas do now. Cheers guys. I'll post back with some progress.
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I'm pretty sure that the external pumps on the commodores are only the lower pressure pump that is fed by the in tank submergible pump. I know first hand that the VN's run a submergible main pump, as with the vl, but the vk is the one i'm not 100% sure on
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