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Swirl pot , fuel line Q's

Started by Statler , Feb 23 2010 03:18 PM

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7 replies to this topic

#1 Statler

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Name:Col
Location:Mackay Qld. Whitsundays for all you back packers!
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Posted 23 February 2010 - 03:18 PM

G'day all,
I'm trying to find out which type of fuel lines are approved for this conversion.
Are steel lines prefered, or is fuel hose permitted?
Being EFI, are there any particular clamps or fittings required?

Do the Qld regs allow the fitting of the swirl pot in the boot area?

I am keen to hear from forumers who have done this conversion, & had it approved for rego.

Edited by coolngroovy, 23 February 2010 - 03:22 PM.

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#2 _uncleian_

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Posted 23 February 2010 - 03:22 PM

yes you must have a fuel system to make the 304 go......................does that help.... Posted Image

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#3 _sonic_injection_

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Posted 24 February 2010 - 08:56 PM

Hi
VN's ran steel line to and from the tank so that should be a problem. As for special fitting's VN's are simply press on barbs for both pressure and return side so no problem there either. The swirl pot can't go in the boot in any state I think. Certainly not down here VIC (plenty do it though). I did see a very good quality under boot swirl pot around 1.5lt with provision to mount the pump. Really nice set up. In QLD also. Maybe you could go and have a look at it. I looked it up for you.

http://cgi.ebay.com....=item4cedb2e2ca

see how you go.

regards

Brett Bresnan
SONIC Injection

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#4 rodomo

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Name:R - O - B Dammit!
Location:Way out west of Melbourne Awstraylya
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Posted 24 February 2010 - 11:40 PM

Are steel lines prefered, or is fuel hose permitted?
Being EFI, are there any particular clamps or fittings required?

There are particular hoses and clamps for E.F.I applications.
Bursons and Repco have them.

Your typical hose clamp has a tail that gouges the rubber and a slotted thread that the rubber tries to extrude through.

A couple examples of the clamps:
http://www.4x4wire.com/jeep/tech/fuel/FuelInjectedCJ01/clamp.jpg

E.F.I hose has extra internal braiding usually.

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#5 _Ozzie Picker_

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Posted 25 February 2010 - 04:50 PM

hi col,
i run a low pressure fuel pump near tank, this fills swirl pot under bonnet ,holds about 1 litre ,so never any shortage of fuel as had by others ,out of the swirl pot a high pressure VL turbo fuel pump,to injection.
the swirl pot came from rare spares and is a trick looking alloy tank,top looking welds,i,ve never had any problems in the last 6 years with this arrangement.
i used the harness out of a VN commy and prunned away all the bits i didn,t need,this is fitted to my WB statsman 1 tonner,so the same can be done in a torrie.
muncie 4 speed,got a speed sensor from castle auto electrics

cheers craig

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#6 _mumstaxi_

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Posted 26 February 2010 - 02:11 PM

I think you guys must mean a "surge tank", a swirl pot is a un-sealed container (sometimes shaped just like a pot) that goes inside or is part of a fuel tank, the swirl pot helps to retain a certain amount of fuel around the fuel pick-up area at all times, especially important under hard cornering/acceleration etc.

A Surge tank also retains fuel at all times, but is a totally seperate sealed tank, it acts as a (lean proof) primary fuel supply/tank to the high pressure fuel pump/engine, thus negating the need to split open your fuel tank and fit a swirl pot.

Now the problem with having a surge tank in the boot,is not to do with the tank itself ,its the fact that the fuel lines that travel to the tank (inside the boot area) will "bleed" fuel vapours into the boot, and so in turn, fuel vapours will also travel into the cabin area (where all the humans are).

I have a surge tank in my boot that is 100% approved in QLD, i designed a tank with 4 tubes of different hights that exit through the boot floor (see pic) allowing all the fume bleeding rubber fuel hose to remain outside the boot/cabin area.

You could also build a enclosure around surge tank rubber lines,if it is sealed from the cabin and allows fume bleed venting to atmosphere it should be approvable.

Teflon coated hose may not bleed the fuel vapours, but not sure if this has been approved for this type of application yet.

You should really be talking to your engineer about every step to confirm what they "will" approve and what wont pass, this is the only way you can be assured of any engineer issuing the modification blue plate at the time of inspection.

,

MT

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#7 Statler

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Name:Col
Location:Mackay Qld. Whitsundays for all you back packers!
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Posted 26 February 2010 - 03:01 PM

You should really be talking to your engineer about every step to confirm what they "will" approve and what wont pass, this is the only way you can be assured of any engineer issuing the modification blue plate at the time of inspection.

Exactly what i intend to do....when i can find one!

Thanks for clearing that up MT.