Outer Limits 4x4 Board

Is there any difference between a GQ carby fuel tank and a GQ fuel injected tank?

Also, does the carby tank have a large swirl pot in it?

Am fuel injecting a carby car and need to know if i require a surge tank or not...

Cheers Josh

as far as i know they are all the same just different pickups. i used a vl pump on mine but you could use a gu petrol one as they are also around 30psi. i used a diesel tank but as you know i never off roaded my conversion

cheers mate

yeah that was my only concern, if the tank got down to like a quater and i was on a stupid angle on a hill the last thing i want is for the pump to cavitate cause it cant get any fuel cause its all in the bottom of the tank.

But on a plus side, got a vl pump lined up, decided to get brand new dizzy and module to prevent any stuffups with a dodgy old one and i've organised that dude to do the dizzy! Everything is falling into place nicely

if your worried about it cutting out on stupid angle, ever thought of using a surge tank to prevent such problems. small tank in fuel system that always remains full unless you run out of fuel but should stop surging problems on side angles and inclines.

yeah thats what i was thinking the solution to my problem will be if there is an issue. but i dont wanna go to the hassle of getting a low pressure pump, surge tank and rigging up lines if it aint necissary, just gonna run the tank low once i get it all set up in a controlled environment (a hill 5 mins from my house) and see what happens....thanks for the idea thou

But anyone with a knowledge of what the inside of a patrol tank looks like would be greatly appreciated

yeah thats what i was thinking the solution to my problem will be if there is an issue. but i dont wanna go to the hassle of getting a low pressure pump, surge tank and rigging up lines if it aint necissary, just gonna run the tank low once i get it all set up in a controlled environment (a hill 5 mins from my house) and see what happens....thanks for the idea thou

But anyone with a knowledge of what the inside of a patrol tank looks like would be greatly appreciated

Josh n Kat wrote: But anyone with a knowledge of what the inside of a patrol tank looks like would be greatly appreciated

It is a 95lt tank with nothing in it. Bar a little splash/slosh stopper around the pickup. There are no baffles. This is what a std GQ tank is like and my after market tank is the same.

if its the rb30 version there is a smalltray around the pick up. ive done this conversion. just have the vl primer pump in tank, no surge tank, and havent had a problem yet. but usually i dont go bush with less than 1/4 tank.

well wasnt exactly what i wanted to hear but thanks for the info turps, might have to look deeper into this surge tank thing then...

to grinch, its a 95 litre tank so yeah nothing in it like turps says. but when you put the low pressure pump in did you just chuck it in the tank or did you need to mount it up with anything.

thinking if i just get a cheap low pressure inline pump feeding into a surge tankfrom the top, then have the high pressure pump sucking from the bottom and the return line from the injectors feeding to the top of the surge tank and another return at the highest point of the tank feeding back to the main fuel tank that may solve my troubles.... ah i'll see what happens once i bolt it all up and i test it thoroughly before any spastic hills.

actually now i think about it more.... if theres nothing in the 95 litre tank, then what does the injected motors do to prevent fuel starvation on a low tank on big hills......

THE MIND IS FOREVER TICKING PEOPLE

actually now i think about it more.... if theres nothing in the 95 litre tank, then what does the injected motors do to prevent fuel starvation on a low tank on big hills......

THE MIND IS FOREVER TICKING PEOPLE

Josh n Kat wrote:actually now i think about it more.... if theres nothing in the 95 litre tank, then what does the injected motors do to prevent fuel starvation on a low tank on big hills......

in the 95 ltr Diesel tank (the same as far as I know) there are baffles in the tank, and around the sender there are baffles.

THE MIND IS FOREVER TICKING PEOPLE

careful it doesnt explode.

bogged wrote:

Josh n Kat wrote:actually now i think about it more.... if theres nothing in the 95 litre tank, then what does the injected motors do to prevent fuel starvation on a low tank on big hills......

in the 95 ltr Diesel tank (the same as far as I know) there are baffles in the tank, and around the sender there are baffles.

Are you sure mine had nothing in other than a small pot like thing, which is about 3" high. But that has a hole in the side. to allow the fuel into it.

yeah that small pot is whats called a swirl pot and as long as the return line dumps it fuel in there i should be pretty sweet.

But if theres anyone out there with an injected car and knows of any difference with the tanks that would be a really great help

yeah that small pot is whats called a swirl pot and as long as the return line dumps it fuel in there i should be pretty sweet.

But if theres anyone out there with an injected car and knows of any difference with the tanks that would be a really great help

turps wrote:Are you sure mine had nothing in other than a small pot like thing, which is about 3" high. But that has a hole in the side. to allow the fuel into it.

yea I had my tank out 3 times, the first tank I had was the OEM one and it split, the second a mate got for me I think it was from LPG fitters..

And being the Cookie of a job that it is to remove, I aint doin it again to look!

The LRT had fuckin HEAPS of baffles in it too, also had that pot thing

i had a lot of problems when i first injected my car . it had the external vl pump and no pot. it would play up on angles .

now i have a external pot . pump mounted inside tank feed the pot then out of the bottom of the pot a high pressure pump supplies the engine . i have had this on its side and it still runs.

my opinion is while you are doing the job do it correct then you want have any problems.

bogged wrote:

turps wrote:Are you sure mine had nothing in other than a small pot like thing, which is about 3" high. But that has a hole in the side. to allow the fuel into it.

yea I had my tank out 3 times, the first tank I had was the OEM one and it split, the second a mate got for me I think it was from LPG fitters..

And being the ***** of a job that it is to remove, I aint doin it again to look!

The LRT had ***** HEAPS of baffles in it too, also had that pot thing

Well there you go all mine had is the swirl pot thing. The same with my LRA tank.

But do agree prick of a job trying to jam a LRT back into that hole. And I dont plan on doing again in the sort term.

turps wrote:Well there you go all mine had is the swirl pot thing. The same with my LRA tank.

But do agree prick of a job trying to jam a LRT back into that hole. And I dont plan on doing again in the sort term.

I think its the job where I have lost most skin by far.

wear some riggers. there is not much i do with out them these days

bru21 wrote:wear some riggers. there is not much i do with out them these days

yea I hear ya, I just hate when they dont quite fit well and ya tryin to do up bolts.. even when racin mx yrs ago I never wore em..

so what kinda pump did you put in the tank and how did you mount it and such... i cant see it being a real big prick of a job cause to get into the top of the tank theres an access panel in the floor of the body.[/quote]

i used a vl primer pump, if youve got a rb30 sender theres already a primer pump mounted to it, all you need to do is slide the original pump out of the rubber mount and slide the vl pump in.