2 Litre in a 1.1

I have a 83 1.1 and a 2litre mk3 gti engine ready to go in. Will i need to change the fuel tank and pump for the mk1 gti item or is ther another way???

i believe it's the lift pump out of a mk3 polo and the mk3 gti pump?

Jon.

does the mk3 polo pump fit straight into the tank and mk3 golf pump strap to the rear axle??

I think so.  Not sure if it needs to be mk3 polo gt?  Someone on here will know, have you tried using the search?

The main fuel pump will probably need a bracket making, but it sits near the axle on the brackets you can see underneath near the beam mounts.  On side usually holds the brake bias adjuster that 1.1's don't have, and the other is for the gti pump assembly that 1.1's also don't have lol

Jon.

Ok thanks but i just had a thought isnt the mk3 golf fuel pump in tank with the sender??can you use a polo in tank lift pump andrun it with a mk2 golf out of tank pump aswel???

yeah you could, that would work.

The other way is to buy a mk1 gti tank and pump and use those, but that means taking the tank off.

Jon.

Yeah thats what i was trying to avoid lol ill give it a bit more research and hopefully the polo/golf hybrid system might work

you dont need a gti fuel tankl at all. ive just put a 1.8 kr lump into my 1.1.
you just need to run an electric fuel pump and fuel pressure regulator. the facet red top pump is a good one and will do the job.
the 1.1 tank is a gravity tank so it has no lifter and the fuel outlet is at the bottom of the tank. just make sure you run an inline filter before the pump.
its a simple option and saves changing tanks.
up to you though.

thanks for the heads up mate where did you get your pump from though??

my 1.1 isn't gravity fed? I have 2 pipes going into the sender at the top of the tank?

one in, one out.

The idea of a lift pump is that it stops you overloading the pump.  My understanding was the polo gti uses a lift pump into a reservoir and then a full power pump takes the feed into the bay.  The main pump is only doing one job then.

Jon.

as above, MK3 Polo lift pump fits the carby tank. its the same as the one fitted to later cabby + scirocco. any MK3 Polo will work, they all use the same lift pump.  Make sure you get the plastic reservoir under the car from the same model, this will prevent fuel starvation round corners.
then you just need a suitable main pump to match your application. for a MK3 GTI lump you can use a MK1 injection pump with a banjo barbed fitting adaptor, easy to get from ebay. alternatively can use a Polo GT or G40 main pump, I'd also get the fuel lines from a MK3 polo as well they're made of plastic. your old metal lines will likely be buggered. MK3 Golf lines might work?

The MK3 Polo is a good donor for the above as it also comes with a bracket and under car fuel filter, all mounted in a line so ideal for a MK1 chassis.  obv mk1 cabby/rocco would work too as they're again mk1 chassis.  if you get a MK1 pump setup you dont need the fuel accumulator, just get a barbed banjo fitting as above and push on a std fuel injection rubber fuel line onto it

as above, carby tank is not gravity fed, that's the GTI tank. most if not all electric pumps will struggle if hooked up to carby tank, plus as i say on corners you'll suffer from fuel starvation. fuel pumps dont like running dry either it buggers em really quickly.  also the proper GTI tank has a swirl pot in the middle of it connected to the outlet at the bottom, this prevents fuel starvation.
some of the cheapo gti tanks dont have this, so if you do go for a gti tank make sure it has a swirl pot! then you dont need the lift pump & reservoir, just connect pump direct to side of the tank.