15 replies to this topic

[VXR 43]

I am in the process of fitting a new leh lump and I am trying to cover some areas that will need sorting before I can go over 300bhp. For the fuel system I have noticed that quite a few are going the route of swirl pot and extra pump but as I have the anti surge tank I think I might be able to get away with an uprated pump as a direct replacment. Klasen-motors have a walbro pump on there web site. Are there any more manufacturers on the market or is that it? If so does anyone know the part num of the one they use? Cheers PS A MASSIVE thank you to Danger7 for helping me sort out the new unit from Vmax. Top Top bloke!

Edited by VXR 43, 02 April 2009 - 06:40 PM.

[FLD]

I'm idly looking at this one. From what I've seen some people put an additional in-line pump in series with the original (I dont like this). Some have used the original to feed a swirl pot and an external pump (I dont like this either). You can modify the pump housing sump piece to just be a fuel pick up and then use a large external pump (like an aeromotive). I'm currently drying to figure out which walbro pump is the one to look at as they are reasonably dimensionaly similar. As such you should be able to just plug and play. If you find out what walbro pump does what post it up here.

[VXR 43]

I am guessing it is similar to this one but I will need to find out before I purchase...

http://www.shop.indi...48c7c562dd15303

[FLD]

Yep, those are the ones I've been looking at. theres also one that flows over 300 lph. Have a look at escort cosworth pumps as they have a very similar set up.

[cnrandall]

Get yourself a separate swirl pot and a bosch high-flow pump. I can advise on parts if you like.

[VXR 43]

I would like to go for a straight replacement instead of using the swirl pot route if its possible. After a few searches on the AOC and MIG forums it looks like quite a few have gone down the route of uprating with a walbro replacement. Cheers

[techieboy]

Check with Courtenays for the gory detail but the Walbro drop-in replacement isn't ideal as it doesn't have quite the same return setup that the OEM pump has. Not sure it has the headroom needed for 300+bhp either. Just going through the pain myself at the moment. I've got the long range tank aswell but am having to go with a secondary pump and swirl pot setup hence the reason it's at Pro Alloy at the moment, whilst they design a plug and play kit compatible with tubbys and NA/SC's. Unfortunately Pro Alloy also do a version of the tank with an integrated swirl pot that will take a motorsport pump direct at an extra £40 which would have solved all of the problems.

[Exmantaa]

What about the eliseparts pump?
http://www.elisepart...php?product=620

[techieboy]

What about the eliseparts pump?
http://www.elisepart...php?product=620

I think it's exactly the same Walbro pump. Note, they say they can rebuild the assembly with a further uprated pump which might be a better option but still not sure if it will support whatever this return problem is. At the time, I kind of vaguely understood Jon's explanation and he sort of vaguely understood the explanation he got from Germany about why it wasn't ideal. He sent a pump off to Glencoe the UK fuel pump specialists to see if they could come up with a drop-in solution but nothing as yet.

[MAXR]

Check with Courtenays for the gory detail but the Walbro drop-in replacement isn't ideal as it doesn't have quite the same return setup that the OEM pump has. Not sure it has the headroom needed for 300+bhp either. Just going through the pain myself at the moment. I've got the long range tank aswell but am having to go with a secondary pump and swirl pot setup hence the reason it's at Pro Alloy at the moment, whilst they design a plug and play kit compatible with tubbys and NA/SC's.

Unfortunately Pro Alloy also do a version of the tank with an integrated swirl pot that will take a motorsport pump direct at an extra £40 which would have solved all of the problems.

I'm having the Pro Alloy tank with intergrated swirl pot & motorsport pump fitted at the moment by Courtenay's...It's not a cheap fix!

[Duncan VXR]

Seen your pump yesterday Max car is running also I gave up on the in tank solution due to the issues stated - Regal say they can upgrade it if you send them the pump but not sure of specs Swirl pot works with inline is more than fine - only thing is you have 2 pumps rather than 1 lol The std pump is more than upto keeping that swirl pot full and certainly had not problems on the roller over 2 days If I had time I would have poss taken the tank out and got it to wayne to mod but the Bosch 044 pump I used with swirl pot and all conections was sub £230 so prob the cheap option also especially with such a good pump

[cheeky_chops]

iirc the walbro wont fit - there is plenty of info on seloc and no solution (last time i looked) except the external swirl and inline bosch jobbie

edit: just found this http://forums.seloc....d=196137&page=1

edit again: seems walboro 255 model 342 fits, though this maybe only the toyota engined tanks?

http://www.monkeytun...c...?f=4&t=1137

Edited by cheeky_chops, 03 April 2009 - 09:22 AM.

[alanoo]

Unfortunately Pro Alloy also do a version of the tank with an integrated swirl pot that will take a motorsport pump direct at an extra £40 which would have solved all of the problems.

Ah seen it on their crazy Audi Elise, but didn't knew they are now selling it

[cnrandall]

It's up to you but you will likely till get fuel surge on track with a drop in pump. Extra cost of a reliable fueling setup far out weighs the risk of your engine going lean.

[alanoo]

Yep, but another thing I don't like is having the swirl pot fed by the OE (high) pressure pump. In an ideal word I'd like a setup with an intank LOW pressure pump feeding the swirl pot then a Bosch one... I have not seen this kind of setup yet

[VXR 43]

It's up to you but you will likely till get fuel surge on track with a drop in pump. Extra cost of a reliable fueling setup far out weighs the risk of your engine going lean.

Even with the Pro Alloy anti surge tank?