Pauls supercharged rocket build

[Deleted]

Another quick question Paul,

What is your setup for getting fuel out of the tank?

I was just planning on running a pipe down inside (obviously I will have some unions in the top that will stop fuel coming out).

However, I am a little concerned that if I just have a pipe down inside, it will suck up all sorts of crud from the bottom of the tank.

All thoughts welcomed!

Thanks
Mark

[Deleted]

An 044 pump will come with a bag filter type thingy which pushes onto the pump itself, mabe adding some form of strainer will also suffice?

One option that may also help you, is track down some foam for the rocket tank, instead of baffling it. (approved foam, not old couch material

Please remember, that 044 style pumps dont have much "SUCK" to them, they need to be gravity fed.

Id use the stock pump, in tank, in a foam filled cutout ( sender and ancilliaries removed) to fill the swirl pot via the existing top outlet/inlet. Personally, i dont like running wires out of a fuel filled tank without adequate protection against leakage and isulation.

Or have an AN4 fittings welded onto the tank in a convenient place, low as possible ( higher for swirl return), and take from there (using gravity) straight into the external high pressure pump. Would this suffice for your needs?

[Deleted]

Thanks Steve,

I'll see if I can find some foam.

Will the Focus pump be ok to fill the swirl pot (I assume so as you wouldn't have suggested it!). I also assume that if it pumps too much it will just come straight back to the tank.

If I was to go to the trouble of having some fittings welded to the tank, what sort of material would weld to the aluminium properly?

Cheers
Mark

[Paul (madeye)]

May 15, 2013 10:15:42 GMT @loopyonion said:

Please remember, that 044 style pumps dont have much "SUCK" to them, they need to be gravity fed.

Or have an AN4 fittings welded onto the tank in a convenient place, low as possible ( higher for swirl return), and take from there (using gravity) straight into the external high pressure pump. Would this suffice for your needs?

basically mark, as steve said.

A boss plate welded to the tank at the bottom rear, an4 fitting to pipe feeding the filter to facet pump feeding the 5l swirl pot. floor mounted bracket (as steve said to gravity feed the 044) from swirl pot, to sytec bullet filter, to 044 to pressure regulator to injection.
i think thats right... i elaborate on the think.

i would do a drawing if my pc skills were up to it.

fuel tank behind passenger, swirl pot behind driver

[Deleted]

Thanks Paul, sorry for all the questions....just seems you guys know a lot more about this than me!

With the AN4 fittings, do they weld to the boss plate, or screw through?

Any pointers on the AN4 fittings you used?

Thanks
Mark

[Paul (madeye)]

well im just going to cut another piece of 6mm thickness and hopefully drill and tap it, if i have the right thread.liquid seal and just screw it home.
but that is only my idea, if it weeps, which im 50/50 on, then ill weld it in. i could just go welded straight away, but im trying to make as much as possible removable as possible.. 'just incase'.
you know what its like, same as you have, ill change my mind on something later down the road

[Deleted]

I know what you mean!

Does the AN4 use 4.8mm pipe? That's all I can see on eBay shops under the AN4 fittings sections.

[Paul (madeye)]

oops, you know mark, i put -4 because i was on auto pilot from reading steves, i will be using 8mm pipe up to and returns from the swirl pot, then 10mm from there onwards, thats only because i already have it.

[Deleted]

Ah ok.

I think from looking on the net, 8mm is AN6.

Cheers for the advice. I'm sure there will be more questions!

Sent from my GT-I9300 using proboards

[Deleted]

Good shout Paul.

I had looked at that but obviously did not read all of the description as I thought it was just a pump and sender, without the swirl pot.

It would need extending like the Focus one though. Not sure how difficult that is on this unit?

Mark

[airforceone]

Mark

Someone has posted modding this pump in the tech section, it's done very similar
to the original ford one.

[Deleted]

May 15, 2013 12:18:34 GMT Paul (madeye) said:

oops, you know mark, i put -4 because i was on auto pilot from reading steves, i will be using 8mm pipe up to and returns from the swirl pot, then 10mm from there onwards, thats only because i already have it.

Doh;) It was the tapered "dash" fittings I was meaning.. 8mm Id tube is essential lol. Usually found on the aeroquip fittings.

[Deleted]

Facts and figures time:-

The webcon unit is nice, but its what we have already. Our focus pumps already reside in small swirl pot (reservoir)designed by Mr Ford for the Focus.
The fuel return from the injector rail, feeds back into the pot of which the pump draws its primary fluid from.
So, my suggestion would be either do what Paul is doing, and external mount an 044 pump, and a taller alloy swirl pot.. or the method i will use, is to fit this:-

www.ebay.co.uk/itm/WALBRO-255-FUEL-PUMP-FITS-FORD-FOCUS-ALL-MODELS-NEW-/160514576565

255 litres an hour versus the webcon 75 litres.

Walbro good for 400hp plus, and I have fitted numerous walbros on Jap imports over the years. Stock jap pumps tend to hit 300 and bottleneck. Unless we start running 10mm fuel lines, which is overkill, then between 200-400hp we are well covered.

£75 all in.. bargain.

Incidentally, my RX7 ran 2 x 1600cc injectors, and 2 x 500cc injectors on an 8mm fuel rail, with a 255 pump, and hit 375 BHP. without starvation Fuel was cheaper back then....

[Paul (madeye)]

oh dear..
what time did the pub shut on an afternoon too.. 3-7 lol

[kiwicanfly]

May 15, 2013 18:33:38 GMT @markharnett said:

Good shout Paul.

I had looked at that but obviously did not read all of the description as I thought it was just a pump and sender, without the swirl pot.

It would need extending like the Focus one though. Not sure how difficult that is on this unit?

Mark

If you do go down the simple route and use a Webcon I would suggest modifying it in this manner rather than the usual threaded rod through the top method.



One (or actually two) less thing to worry about for sealing.