waynem Posted May 28, 2004 Posted May 28, 2004 I know many pepople advocate the use of a low pressure/high pressure fuel system with swirl-pot for injection engines which , I guess, guarantees a consistent fuel supply to the high pressure system. Whilst a good, idea, is one strictly neccessary ? The Westfield system is just a single HP pump and filter... I am contemplating a LP/HP system, but two fuel pumps, two fuel filters and a swirl pot being added to the rear of the car will make fitting them all in a bit of a conundrum... Can anyone suggest good yet small swirl pots and filters Ta, Wayne Quote
thos Posted May 28, 2004 Posted May 28, 2004 I dont have a swirl pot, and while I'm on track, I just keep the tank topped up after each session. I do plan on sorting it out though. My problem was that I only had an in-tank HP pump and you need to start off from the tank with a low-pressure pump. But, I've now found an in-tank low-pressure pump to get the fuel out with. I have a Mk2 GTI fuel pump at home now to feed from this, this fuel pump has an integral swirl-pot. It is however, quite a chunky item, so I'm just looking at a few other options before going ahead with it. Quote
waynem Posted May 28, 2004 Author Posted May 28, 2004 Hi, At least my fuel tank does not have an integrated pump ( that would be a problem...). It is one of those things that I could leave for the future I guess. It just seems easier to do now ( before the bodywork is on) rather than later. The thing is, you end up tweaking so much that your budget and build time grows enormously... Wayne Quote
Dave Eastwood (Gadgetman) - Club Chairman Posted May 28, 2004 Posted May 28, 2004 The Westfield system is just a single HP pump and filter... How old's your tank, I bought mine last week, and WF told me the swirl pot is built in now - it's at the bottom left under the tank. Quote
waynem Posted May 28, 2004 Author Posted May 28, 2004 Oh its a new tank alright, and it does have the fuel pick up point in the lower left corner where there is a smaller boxlike construction. This isn't a swirl-pot par se. It will still leave the fuel system suceptible to surging when low on fuel/tearing around corners. A swirl pot has pumped fuel swirling around it and slightly pressurised which will (theoretically) eliminate any fuel surge in the HP system when the tank is low.. You are right though. The newer fuel tank has partly addressed the issue of fuel surge and is probably alright for everyday driving. Trackdays/sprints are another matter were the limits of this static fuel pick-up point may be found. Tear into a nice sweeper hoping to embarass the exotic sportscar (temporarily) in front and have the engine lose power and splutter.. I'm trying to weight up how necessary this system is as trackdays are hopefully going to be frequent.... Wayne M Quote
Dave Eastwood (Gadgetman) - Club Chairman Posted May 28, 2004 Posted May 28, 2004 This isn't a swirl-pot par se. It will still leave the fuel system suceptible to surging when low on fuel/tearing around corners hmm. Using carbs at the mo, so not a issue for me yet, but does annoy me when people, (esp. manufacturers) only tell you half the story. Still, at least when I eventually fit injection, I'll know I do need to get aswirl pot before I get rid of the existing fuel pump. Quote
waynem Posted May 28, 2004 Author Posted May 28, 2004 but does annoy me when people, (esp. manufacturers) only tell you half the story. I'd cut them a little slack. As with most things Westy, there isn't always a right or wrong answer and everybodys requirements are as different as their cars. Thats what makes them great. It also creates a minefield of choices........ Wayne M Quote
Dave Eastwood (Gadgetman) - Club Chairman Posted May 28, 2004 Posted May 28, 2004 I know what you mean, but the swirl pot and the return feed connection were two things I particularly asked about when I ordered the tank. Still, no probs, I know what I'll need now. Quote
moomin Posted May 28, 2004 Posted May 28, 2004 Gadgetman, The small sump on the Westfield fuel tank is generally sufficient on the road - I've never had a problem, and you do more right handers than left handers (hence it being on the nearside end). WayneM, You're right, if you are going to be tracking or arguably more significantly sprinting (where you don't want the carry excess weight of fuel), you will be needing additional surge protection - as soon as I blasted mine around a long left hander with half a tank of fuel, I got a surge problem. A separate pump and swirl pot is the only real solution unfortunately This is a pending job on my car. Would be interested to see a pic / dimensions / weight of the Golf pump with integrated swirl if anyone has any... moomin Quote
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