Hi all,
I am building a locost which will be a road going car. I will probably take it on track days maybe 3/4 times a year at most.
It is going to have a 1.8 zetec, EFI. The question I have is do i really need a swirl pot?
i don't want to run the risk of damaging the engine but don't want to install unecesasry parts.
Cheers,
Yes you do, unless your tank has one built in.
Some people run without them and seem to get on okay but I think it's a cheap insurance to have. Blatting round a high speed corner at full chat and going all lean might be an expensive problem compared to a cheap swirl pot. Just make sure you don't recirculate back into the swirl pot otherwise you risk making toasty warm fuel and vapour locks etc etc. Best to feed the return back from the fuel reg to the tank.
Hi there. My friend has a factory built Zetec engined Westfield that suffers awfully from fuel starvation if its tank is less than half full. He is going to mod the tank. I would advise you to do the same.
quote:
Originally posted by BenB
Some people run without them and seem to get on okay but I think it's a cheap insurance to have. Blatting round a high speed corner at full chat and going all lean might be an expensive problem compared to a cheap swirl pot. Just make sure you don't recirculate back into the swirl pot otherwise you risk making toasty warm fuel and vapour locks etc etc. Best to feed the return back from the fuel reg to the tank.
I always ran with the HP return to the swirl pot. No problems.
If you do run the return back to your tank, make sure your LP pump can supply at least the flow rate of the HP pump.
and i would use a LP filter before the LP pump to ceap it nice and clean
quote:
Originally posted by l0rd
and i would use a LP filter before the LP pump to ceap it nice and clean
ive fitted one, my tank was baffled but i had fuel stavation less than 1/2 a tank on roundabouts
In hot climate overheating fuel is a definite problem that causes fuel pump failure amongst other things, so in hot climate definitely return feed
into tank and not into swirl tank. Also in hot climates run with your tank as full as possible and top up as often as possible. (by hot I mean >
38C). (Doubt if that's a problem in England). How do I know this - I have paid the price of expensive fuel pumps a couple of times on the
tintops. Insulation between tank and hot road plus fuel cooler also helps in these circumstances.
If you have good baffling in the tank I really don't see the need for a swirl tank, but then I am no expert.
make sure the Lp pump pumps at a higher rate than the Hp pump or the swirl tank will run dry. Guess how I know
If you fit a Landy pump in the tank you get the pump, swirl pot and sender all in one - much easier IMO
i hadnt considered a swirl pot.
what is required to use them, ie swirl pot?
how much will it all cost roughly?
is it cheaper to put something in the tank and if so what?
sorry for all the questions
steve
quote:
Originally posted by steve8274
i hadnt considered a swirl pot.
what is required to use them, ie swirl pot?
how much will it all cost roughly?
is it cheaper to put something in the tank and if so what?
sorry for all the questions
steve
RazMan,
Do you know the part number of the landrover fuel pump system. ANy idea of dimension, interested in fitting one to an MK 6gallon fuel tank.
Cheers
I used this one
RANGE ROVER P38 V8 IN-TANK FUEL PUMP`94-`98 on eBay (end time 23-Dec-10 14:56:39 GMT)
PART Nş: STC4344
It has a telescopic sender which sits on the bottom of the tank - quite a neat little system really. Pump gives me 3 bar and plenty of flow.