Offroad-Express

hi all, my fuel system need some attention, i am up grading my fuel lines and filters to about 7.5mm id, but when i got to the carb its only 6 mm going in, have i wasted my time, the carb is a 2 barrel rochester 500 cfm i think, good engine high per cam,
fj 40
what size would you run ??

cheers warwick

i only have 5/16 hose feeding my 600cfm 4bbl holley on 350cui feeds it fine

cheers, should my fuel filter be b fore or after fuel pump ?

both, one between tank and pump and one between pump and carb

yep 2 filters, carbs hate sucking all the rust scale up from your 30-35 year old rusty fuel tank

Sadam_Husain wrote:yep 2 filters, carbs hate sucking all the rust scale up from your 30-35 year old rusty fuel tank

I'm with them

I only had one before my pump and it ran like shite, so we put one after and it ran sweet after that

have put in 2 new fuel filters, 1 before an 1 after the pump, the primary one will clog up like all uck !! what should i clean my tank with ?? some one said isopropal but is outta my budget you know !!
and yes it is 35 yrs young!!

Both my old 40's were the early ones with the tank sitting on the floorpan under the drivers seat, I used to take the tank out of the truck and remove the sender and flush it out several times with petrol and drain all the rust scale and crap out the sender hole. I found once the tanks rusty inside it'll always be rusty inside and the petrol sloshing around keeps knocking more rust scale off

when I got my 40, it had a diesel in it, which we took out

we just squirted shit loads of water in the tank and lots of degreaser cleaning shit and more water and then left it for a week to dry out and filled it up with petrol and drove it.

every now and then i put some 2 stoke oil mix into it, castrol TTS synthetic stuff (same as i used to run my MX bike on) and that seems to keep the rust at bay

smells choice to

cheers for that i like the smell of two stoke as well , i will try it!!