1st GEN Celica Surge Tank Ideas

[airfireman1]

The pump worked out at $80.00 aus plus postage,it is not a new one but is nearly new and had only been in the car for a short while before it was wrecked.I have a spare RA28 fuel tank in the shed so it should be a breeze to do some test fitups and check the pressures. I can not see a great problem as it is a genuine item.
here is a picture, looksvery similar to the commadore ones.

[ace]

The pump worked out at $80.00 aus plus postage,it is not a new one but is nearly new and had only been in the car for a short while before it was wrecked.I have a spare RA28 fuel tank in the shed so it should be a breeze to do some test fitups and check the pressures. I can not see a great problem as it is a genuine item.
here is a picture, looksvery similar to the commadore ones.

So thats an intank efi pump that will directly bolt into the RA28 tank? How do i get one? PLEASE!

[airfireman1]

Well i got this one of EBAY , the only one I have seen for a long time.i also picked up a few items from the same seller so postage was not too bad.
I will see if it has any part numbers on it when it arrives.
Cheers

[TurboRA28]

Where abouts would that fit in the top of a ra28 tank? It looks quite a bit bigger than the original fuel level. I am guessing you need to make the hole larger and use some nutserts or something?

[infotechplus]

this might be a stupid question but is fabricating an in tank pump not an option?

I modified my RN85 Hilux carby fuel tank to take the in-tank pump from the VL Commodore, used in conjunction with the BOSCH pump from the same vehicle. See my conversion thread for full info.





I'm still trying to figure out the best place for the BOSCH and the fuel filter. I won't be running a surge tank, and keeping the original fuel lines.

Cheers,

[Major Clod]

I modified my RN85 Hilux carby fuel tank to take the in-tank pump from the VL Commodore, used in conjunction with the BOSCH pump from the same vehicle. See my conversion thread for full info.

Mate, before I go screwing around at wreckers, would you be able to give me an approximate diameter and length of the VL intank pump if you can remember or still have easy access?
Cheers,

Ryan

[infotechplus]

Just to throw one in from left field, some race car tanks are filled with an open cell foam. This is primarely for impact resistance but also does a really good job of baffling the tank. It would only take up maybe half a litre of volume so space is not a problem provided you removed space for the gauge float.

That open cell foam is very expensive. I put some in a custom 50 litre tank I installed in my Datto 1600 race car many years ago and it cost as much as the tank itself. Hopefully prices have come down since then.

The foam takes up less than 1-2% of the tank volume if I remember correctly and stops the fuel from sloshing around.

You need a fair size opening to compress the foam and get it in. I had an opening I could get my hand in (just) so I cut the foam into three large blocks. It compresses down quite amazingly. There was a small space at the top of the tank but that was okay as I never ran with a full tank excpet at the annual enduro (AROCA 6 Hour Relay).

Cheers,

[infotechplus]

Mate, before I go screwing around at wreckers, would you be able to give me an approximate diameter and length of the VL intank pump if you can remember or still have easy access?
Cheers,

Ryan

I don't but I can say it fitted easily into the opening on the Hilux tank. I will measure one up for you next time at Pick 'n' Payless.

The opening on the Hilux is 42mm so the in-tank pump is smaller than that.

Here's a photo comparing the size of the in-tank pump to the BOSCH external unit.



Hope this helps,

[The Witzl]

The pump worked out at $80.00 aus plus postage,it is not a new one but is nearly new and had only been in the car for a short while before it was wrecked.I have a spare RA28 fuel tank in the shed so it should be a breeze to do some test fitups and check the pressures. I can not see a great problem as it is a genuine item.
here is a picture, looksvery similar to the commadore ones.

I had a look at this too.. and if you notice, the cover plate on the stock RA28 tank is TINY compared to the USA cover plate you pictured.

Im thinking of getting a complete US-spec fuel tank, as then you have a massive opening at the top to make your own cover plate with fuel pump attached.


EDIT:

regarding infotechplus' method used in the hilux - this wont work so easily on the RA28 because the fuel lines dont enter the tank through the cover plate, they go through the tank elsewhere and arent removable.... you could make new lines through a new cover plate and plug the old ones... but you would also have to mount the level sender on this same cover plate - there is only ONE on the RA28.

Im still thinking that the 28 is going to need a pretty special solution to this whole in-tank pump dilema.

Im even starting to think DROP TANK.

[TurboRA28]

How hard are US spec fuel tanks to find?

[o_man_ra23]

If you refer back to Tricky's pump, I didnt have a problem, because the pump isnt rigidly mounted, there is some room for it to move. Also the RA23 tank is partially baffled from factory and its fairly tall, so that helps a bit too.

As for Major Clod's drawing, my original idea was to have the lift pump draw the fuel out of the tank completely, and then dump into the surge tank section through another fitting. The idea behind this is that the lift pump will be a pain in the arse to remove otherwise.

Also my idea was for a completely new drop tank, so I was going to bring the surge tank section all the way to to the top of the tank, with just a few small slots at the top for overflow.

Cheers, Owen

[MWP]

For those that haven't seen my members rides thread, this is what im doing:


That box is open underneath the car and contains a 300mm high ~2L surge tank, Carter Black lift pump & Bosch 910 high-press pump.
Everything uses 3/8th bundy pipe and 1/2in fuel hose, including the feed and return on the fuel tank.

[MWP]

So thats an intank efi pump that will directly bolt into the RA28 tank? How do i get one? PLEASE!

Youll have BIG surge problems though. Our RA28 tanks have very limited baffling.
To run only that one in-tank pump you would have to modify the tank and add some kind of a swirl pot that the in-tank EFI pump would then sit in.

[Billzilla]

A bit of a bump for my thread on how to build swirl pot properly, if you guys are building them from scratch you might find this of interest.
http://www.toymods.net/forums/showthread.php?t=15689

[Major Clod]

The opening on the Hilux is 42mm so the in-tank pump is smaller than that.

Cheers mate, all I really need to know!