Efi To Carb Conversion

[A14Force]

I'm toying with the idea of repowering an A31 with a nissan Y40 V8.

It'd be a fairly straight forward coversion I think. But does anyone have any clues about what would be involved in bypassing the ECU? Do things like the signal for the temperature guage come from the ECU?

Your thoughts please.

[CEF11E]

run the factory ECU and just do not run injectors. use a carby to control fuel and let the ECU do the rest.

Why the hell would you want to do it anyway?

I have seen some nice quad throttle SR20's that rev to 10,000 with huge cams.

buy why with a Y40?

[A14Force]

Because I can get one with a rebuit auto quite cheap. Plus it would make a nice cruiser. 190hp, and no lag. The cool sound of a V8, and the comfort of a ceffy. Plus the rocker covers are aluminium with "NISSAN" cast on them.

It'd be something a bit different. And, it would do mean skids!

[342Four]

plus theres something about a thumping v8 and especially carbied with a really lumpy idle mmmmmmmmmmmm

put some mean cams and ohhh....... man, im drooling thinking about it

[A14Force]

Lumpy cams?

The Y40 is a single cam pushrod V8, out of an old school president. I wouldn't shag around souping it up. I have other toys for that. Lopey idle's wear thin pretty quick. Plus the Y40 is only a three main crank, so revving them past 6000 is a recipe for broken engines. I just think it would be a nice cruiser.

[342Four]

well, cam then...or not

at least do some justice to it with extractors and a decent exhaust to make it sound alright

about the ecu tho, wouldn't it chuck a wobbly since there are no injectors to run?

Edited October 13, 2006 by usherly

[A14Force]

Thats kind of what I was wondering. I'd rather remove the ecu, and just bridge out the wires nessesary to make it run, and to make the guages function. I'd need to reg down the fuel pressure. (If not change the pump) I'd be starting with an RB20E car, so there's not guite as much gadgetry to delete.

[andylaurel]

if the ECU chucks a wobbly cos there are no injectors, plug em back in and just dont use them...

you said "the comfort of a ceffy"

have you been in one? they are like dirty old VN commodores!!!

get a laurel and drop in a Infinity motor. Now that would be the shiz

[A14Force]

Ive owned over 30 cars so far, and my A31 is by far the newest. Hence the comfort. As for buying a laurel and a hell expensive motor, that defeats the whole purpose. I have lots of other toys I'd rather invest the big dollars in. It's all about doing stuff on the cheap for me. Any fool can blow a huge wad of cash.