beams 3sge into ae85/86

[resahc]

has anyone done this (aprt from billzilla) have an engine and 6 speed waiting to go in, need to know if to keep the varible speed fuel pump or run a return line with pressure regulator? any help would be great. cheers

[Crazyracer]

I have an Altezza 6 speed gearbox ready and waiting to go in. But seeing as you're in NZ it might work out more economical to source one over there.

Apart from that I've done a Gen 2 3SGE into a Datsun 1600 which wouldn't be too dissimilar to putting it into an AE86.

The whole RWD conversion is a bit of a bugger of a job, but would probably be made a whole lot easier if you can find (and afford) a RWD Altezza motor in the first place.

On the fuel pump front I would probably go with a regular EFI pump and run a return line as these are relatively cheap and easy to find when you need to replace it.

Glen (Celica RA45) may make an appearance here and offer you some advice. He's done a bunch of BEAMS motors into his RA45 Celica.

[Billzilla]

They don't run a variable speed pump. The volts to the fuel pump stays the same all the time and they run 62psi constant.

[resahc]

sweet that clears it up for me, so can i run any fuel pump that is capable of pumpin 62 psi or am i beter off chucking a return line and regulator in, cheers for ya help

[timottaway]

Anthony Kellam who runs Kaizen Garage in Brisbane, has a kouki trueno coupe with a beams 2s and 6 speed and runs it on an Adaptronic ECU...mean drift car. His car is on Ae86 driving club...

["Z" UTE]

They don't run a variable speed pump. The volts to the fuel pump stays the same all the time and they run 62psi constant.

So Bill, do the pumps have a bypass valve to reduce flow, when the engine is in a low fuel demand state, ie. overrun/idle?

cheers Chuck

[Billzilla]

So Bill, do the pumps have a bypass valve to reduce flow, when the engine is in a low fuel demand state, ie. overrun/idle?

cheers Chuck

No they don't. (AFAIK) It's 62psi all the time.

["Z" UTE]

So we just supply a constant head of pressure to the rail, and wait for the injectors to do their thing. Well I suppose that will reduce the frictional heat in the fuel, not constantly being pumped around a circuit.

cheers Chuck.

[resahc]

yea i would have thought that there would be some sort of by pass or pressure relef wouldnt it put an aweful lot of strain on the pump? bilzila you wouldnt happen to know where i could get a twin master cylinder setup similar to yours would you? thanks for your help

[Celica RA45]

the relief is in the fuel pump in the tank on the altezza

[Billzilla]

bilzila you wouldnt happen to know where i could get a twin master cylinder setup similar to yours would you? thanks for your help

I got mine from the UK, but that shop isn't in business anymore.
Just have to make it I guess.

[86er]

Hi sorry to did this up, but Bill or Glenn, can I use a msd pukmp with stock beams dead end fuel setup? or so i need to get the relief thats in altezza tank, and if so, can i get it to work with my msd pump? thanks

[Billzilla]

Hi sorry to did this up, but Bill or Glenn, can I use a msd pukmp with stock beams dead end fuel setup? or so i need to get the relief thats in altezza tank, and if so, can i get it to work with my msd pump? thanks

I use a Supra pump of some sort, and the fuel pressure is regulated to 62psi but the rail has an 'in' and 'out' like a regular one.

[clubagreenie]

Run a tpiece off the fuel line after the pump running back to the tank (or run it internal). Either way in this line, get a hydraulic or similar one way flow valve and have the pressure spring set to required pressure to bypass the dead headed fuel back to tank.

Beauty of this is it either stays in the tank or is very close to the tank reducing plumbing and fuel heat.