External lift fuel pump - ecotec conversion

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brendon
Posts: 472
Joined: Fri Apr 03, 2009 3:47 pm
Location: Rockhampton

External lift fuel pump - ecotec conversion

Post by brendon »

planning to use a bosch 044 pump as the main pump
as the sigma is a carby the fuel tank isn't set up properly for efi (no sump/baffles/pump pod) so I was planning to put in a surge tank and an external lift pump.

my question is what is a good external lift pump capable of keeping up with the 044 and the ecotec? holley red?
most pumps I've found are intank

the efi'd scorpio just runs a lift and a hi pressure pump no surge etc. (it very occasionally get surge when the tank is near empty and doing a motorkhana) However the total cc for the injectors is less then half of the ecotec.

cheers
83' GJ wagon
82' GK Scorp (Track car)
08' Turbo territory
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amgis_obrut
Posts: 1742
Joined: Wed Mar 18, 2009 6:26 pm
Location: Orient Point NSW

Re: External lift fuel pump - ecotec conversion

Post by amgis_obrut »

I just run an 044 with no lift pump though my tank has been modified with the addition of a sump, also I have a one way check valve of the outlet side of the pump which keeps the pump primed
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
brendon
Posts: 472
Joined: Fri Apr 03, 2009 3:47 pm
Location: Rockhampton

Re: External lift fuel pump - ecotec conversion

Post by brendon »

yeah I have seen your tank mods if I was using a sedan I would follow similar path, but the wagon tank design (cause of the spare wheel) I though a surge would be easier.
good to know the single pump works fine without a surge though
83' GJ wagon
82' GK Scorp (Track car)
08' Turbo territory
brendon
Posts: 472
Joined: Fri Apr 03, 2009 3:47 pm
Location: Rockhampton

Re: External lift fuel pump - ecotec conversion

Post by brendon »

got it sorted now - I think

Tank> Holley red (269LPH@4psi)>Surge tank>bosch 044 (290LPH@30psi)>ecotec
83' GJ wagon
82' GK Scorp (Track car)
08' Turbo territory
brendon
Posts: 472
Joined: Fri Apr 03, 2009 3:47 pm
Location: Rockhampton

Re: External lift fuel pump - ecotec conversion

Post by brendon »

after looking at the below post:
http://www.sigma-galant.com/viewtopic.p ... 210#p61027

I've been think i maybe better off putting a long narrow sump on the filler side with some baffles.

what do you guys think, or does anyone know if there is a fuel tank that fits unders the sigma wagons that keep the provision for the spare wheel carrier?

Image
83' GJ wagon
82' GK Scorp (Track car)
08' Turbo territory
User avatar
amgis_obrut
Posts: 1742
Joined: Wed Mar 18, 2009 6:26 pm
Location: Orient Point NSW

Re: External lift fuel pump - ecotec conversion

Post by amgis_obrut »

What problems are you having ?

I went with the sump as I don't like having fuel system components inside the car and there was no room to fit a decent sized surge tank under the car
GH Sigma, 16" Mesh wheels, sports steering wheel and a V8 exhaust
brendon
Posts: 472
Joined: Fri Apr 03, 2009 3:47 pm
Location: Rockhampton

Re: External lift fuel pump - ecotec conversion

Post by brendon »

Room underneath is an issue, being a wagon no good in the boot/cabin and I like the idea of keeping the system simple 1 pump etc. Probably going to be similar ballpark cost (clean tank & sump vs. Second pump, surge and fittings)
83' GJ wagon
82' GK Scorp (Track car)
08' Turbo territory
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