82streetracer

iTrader: (1)

82 with 91 jspec TII engine, will most likely have a BNR stage 2or3 turbo, but not stock(boost creep issue).

anyhoo, still havent set up the fuel system, im thinking either the RP pump or a bosch one.(need to support 400hp (just to be safe, porbably not go that high)

will I need a surge tank, and can I use the stock pickup or will I need to install something bigger. It doesnt seam like I can suck alot of fuel through that little hole. so what are my options for fuel delivery,

i had anouther thread on fuel cells which would solve some of these problems but I think staying with the stock tank will make refueling alot easier, I dont have to open the hatch and spill gas all over the inside.

whadaya think?

Directfreak

iTrader: (2)

You don't need a surge Tank. Just make sure your fuel supply is constant and has enough volume. If you're using a stock 82 Tank, I would just recommend you sump it. to avoid any problems.

I believe Mike-P is using a Bosch Fuel Pump, using the stock lines, and he guestimates about 300HP. When Hitman finally tunes his car for 400RWHP, I think he might have fuel Starvation problems with the stock lines.

Check out this Thread in the Single Turbo section

BTW, I am using the Aeromotive 1000 pump, rated for plenty more HP than I plan to get. It looks trick too. I will be using the stock pick-up in the tank, because on the SE, it is quite large, and already has baffles on it.


So, if your gonna use the 82 tank, sump it so you don't have to worry about it ever again.

82streetracer

iTrader: (1)

if thats the situation Im thinking the fuel cell is a good idea, makes plumbing a lot easier, just refueling is a bitch, but I can work that out. with the sump in the back, that fixes it. usually there baffles also.

Directfreak

iTrader: (2)

Plumbing what easier? It's not complicated at all if you are using the stock tank, or even a sumped stock tank.



I ran a straight -8AN line to the Regulator, which will go straight to the tank as a return. I also ran a -10 Feed line from the Fuel Pump. I have to admit, the braided lines look oh so damn nice!!

Now I have to bring down the tank, clean it out and then run the lines to it.

82streetracer

iTrader: (1)

so, how do you put in a bigger pickup and return.

and isnt that pump a little overkill, what HP are you shooting for.

Directfreak

iTrader: (2)

Get an SE Tank. Again, in your situation, just get a sump put on yours..

No such thing as too much fuel volume in an EFI setup.. I am shooting for 400 to the wheels right now. My whole setup is overkill. I designed it this way so when I rebuild in the future, I can go ahead and bridge it and for 600 plus.

AJC13B

If either of you plan to drag race with slicks, you will need a surge tank. I learnt the hard way...

I had the tank sumped and 2 x bosch motorsport pumps. I never had any issues on the street or racing on street tyres. Put slicks on and run a 1.5 60ft, and you need a surge tank for sure.

Directfreak

iTrader: (2)

I don't know Steve. That's why you sump the rear of the tank for Drag Racing. Maybe you didn't have enough fuel in the tank.

The Puerto Ricans don't use surge tanks, and they are running harder than just about anyone else.

This car (granted it has sumped a baffled SE Gas Tank)
does NOT run a surge tank either.




Sumps seem to be popular in Australia though.

setzep

If I were to do it all over again I'd have a surge tank. I would simply replace the stock fuel pump with a higher volume one and run it to a 10 micron filter from there into a surge tank in the engine compartment, then run a high pressure pump from the surge tank to the fuel rail. From the return of the regulator I'd go back into the surge tank then at the top of the surge tank I'd have a "over flow" return that goes back to the stock tank. Doing this will insure that your high pressure pump will always have fuel not to mention the pressure drop through a couple feet of tubing/hose would be a ton less than going from the back of the car to the front. Especially under hard G's (1.5 second 60' times)

Remember all your fuel injectors care about is pressure. They don't care if you have 100gpm going through the fuel rail if your pump can't hold a steady pressure.

82streetracer

iTrader: (1)

what kind of shop could install a sump like that.

radiator maybe.

im still thinking of going with a cell.

AJC13B

At one stage the tank was 3/4 full of C16! lol! So it wasnt a lack of fuel in the tank issue

It was just the gforces acting on the fuel in the lines I think and the gforce was more than the the fuel pressure could push against. Even if it was only for a split second, that small air pocket in the fuel line caused the car to miss, which is never a good thing

82streetracer

iTrader: (1)

isnt it loud having those pumps there.

and are those the pumps feeding the engine or the tank?

84rex

well done

AJC13B

Kind of, but you get used to it They are coming out next week anyway and going under the car. I just had that setup for drag racing.

Those pumps are feeding the fuel rail. There is a carter low pressure pump under the car feeding the surge tank.

S2-13BT

Isn't it illegal (in Aus at least) to run the fuel system inside the cabin. Probably not a good idea anyway.

I use a surge tank that fits into a nice little area under the car. It's very common in Aus to put a surge tank there. I don't have any pics though.

I would certainly recommend it, it's probably the easiest way to go and cheapest. I'm not sure how expensive it would be to sump and baffle the stock tank though.