170 replies to this topic

[techieboy]

Lots of people mount swirl pots and extra pumps in the cabin of track cars (probably safer from a crash point of view than somewhere on the periphery of the car) but there usually in bigger cars than ours and in the spare wheel well, or similar. You might be able to get away with it, if it's boxed in, in some way.

[NickB787]

Jimmy I will find the info I collected when I did my swirl pot setup, personally I like the setup with 2 pumps instead of the one in tank, I spent so much on the engine I wanted to make certain it always gets the correct fuelling.

[The Batman]

I personnally think my way is the best way Pro alloy race tank with a 044 pump Plus it's alot less problematic as daronwalls fuel pump died in the tank and ruined his day as his swirl pot couldn't fill up

[chris_uk]

i dont know what happened but if you are getting fueling issues with a full tank of fuel id be trying to look at why thats happening first, you shouldnt ever be getting starvation with a full tank. i noticed it when i did angelsey on the hill just before the corkscrew and i was down at 11L.

[JG]

But i had it at Abingdon with 22-25L, and haven't had it since with the PA tank and some of the left handers at Anglesey are worse. But agree, it is odd to suggest starvation at full tank.

[chris_uk]

22-25L is a bit wierd., i wouldnt of that thought that should of happened either, was your pump dying or something?

[JG]

22-25L is a bit wierd., i wouldnt of that thought that should of happened either, was your pump dying or something?

Nope, pump hasn't changed. I just think the standard tank is a really bad design, for any kind of left G

[chris_uk]

ah right, interesting.

[JG]

Also at anglesey i went right down to around 10-12L so it does something. Was also great to fill up in the morning and then not have to worry about getting fuel at lunch.

[chris_uk]

yea i can imagine that is a great bonus! expecially at anglesey lol

[JimmyJamJerusalem]

It's the same old missfire again Chris, can't believe it!!! A swirl pot isn't my best chance to fix, talking to Joe who's been speaking with our resident Z22SE boffin there's a possibilty that my knock sensor is playin up so we're doing that but as I said a swirl pot is just something I should have done a long time ago!!!

[JG]

I burnt 105L over the week end though anyway, back on topic...

[JimmyJamJerusalem]

JG are you supplying the fuel lines etc as a Mango product? Do you have a price for that filter?

[JG]

Yep, they are going in the shop. But i think yours need a bit of an R&D project which i've PMed you about.

[The Batman]

I have ha fuel starvation and what you are experiencing isn't fuel starvation However being a track/race car it does need a swirl pot

[Nev]

Hi Jimmy,

First off thanks for arranging the National, I had fun, learnt a bit and had some good passenger rides.

In regards to fitting a swirl pot here are a few points to consider if you go ahead:

1. Fitting the swirl pot on the parcel shelf just next to the lifter pump is the best place IMO (though your race regs may stipulate otherwise). This is because:

• it will keep pipe runs to the shortest.
• locating behind the seats is the safest/strongest place in the car.
• cabin temps will be lower than engine bay temps and help keep your fuel cooler (which has mild safety and power benefit benefits)
• being in the centre of rotation of the car will exert the least g-forces on the swirl pot and fuel.
• If you get a slight leak of fuel in the cabin you will smell it immediately and take precautionary action. If it is in the boot engine bay, you wont know about it until you see flames bursting out of the rear.
• The cabin has no hot spots (like the exhaust or engine), so a minor leak will be far less likely to lead to vapour ignition.

2. Eliminate the hard plastic lines in the engine bay, replace with braided hose. This will:

• 1) reduce the risk of a burst pipes if you sustain a major rear end impact.
• 2) the plastic pipes I/D is a restiction compared to AN6 or AN8.

3. If you decide to use a Bosch 044 pump, be aware that the inlet feed to this is AN8 (to provide extra inlet flow to the pump). Make sure your chosen swirl pot also has an AN8 outlet fitting or you will cause a restriction.

4. Mount the pump on rubber if possible. It is very noisy.

5. Make sure you fit an additional fuel filter AFTER the power pump. This is important if you power pump fails, as its mechanism may disintigrate and go straight into your engine. Pump disintigration does happen.

6. As you run a race oriented car, you could consider the Bosch racing pump. This is in fact an ordinary 044 pump that is tested that it conforms to specification and then it gets a new part number, so hence gives you a bit more security for your £.

7. Try to ensure all pipework in the engine bay is flexible and can bend out of the way in case of severe impact.

8. Ensure the pump has thick 200+ watt capable power line as it can draw a lot of current (18 amps I think from memory). If you dont do this it will not flow to spec just when you need it most and may burn the line out.

9. You could get rid of the lifter pump in the tank carrier and let the 044 do all the work. Reducing 2 points of failure to 1 point is a good general strategy for a race car IMO, though this will lead to a different configuration. Also you have the advantage of using a 600+ BHP pump to supply for just 300 BHP, so it will not be strained in any way at all, hence less need for a lifter pump.

10. For extra safety you could fit and mount your swirl pot in its own fuel proof container/shroud. My setup has a fibre-glass box which will partially do this for example.

There are some pics and a short write up of my install here: https://sites.google.../07---update-24

Hope that helps.

Edited by Nev, 09 July 2012 - 11:21 AM.

[NickB787]

I personnally think my way is the best way

Pro alloy race tank with a 044 pump

Plus it's alot less problematic as daronwalls fuel pump died in the tank and ruined his day as his swirl pot couldn't fill up

Yea but if a pump dies it dies where ever it is fitted, mind you a lot quicker to change a pump not in a tank.

Some great points there, Nev I will pinch some of them myself

Edited by NickB777, 09 July 2012 - 11:28 AM.

[Zoobeef]

May be of interest to some. http://item.mobilewe...Id=230822557139

[NickB787]

JG are you supplying the fuel lines etc as a Mango product? Do you have a price for that filter?

I am after fuel lines also

[haggi961]

Also at anglesey i went right down to around 10-12L so it does something.

Was also great to fill up in the morning and then not have to worry about getting fuel at lunch.

Im on the standard tank and was down to around 8-9 liters at one point and was having no problems what so ever with fuel.