Have been advised that I'm likely to max my Walbro 255 pump with the mods I'm carrying out. Do walbro do a larger in-tank pump? Can you install a Bosch 044 in-line without a swirltank to boost the 255 (i.e. fit it in-line under the car)? A mate of mine tried this on a evo but his car started missfiring stright away (may just have been a coincidence tho).

Don't really want to install a swirl tank, but don't want to compromise safe running of the car.

Sorry if this question has been asked before but it seems most people either chance the 255 or fit a 044 and swirlpot set up, is there a in between?

 

Ask Rick at RE Motorsport on 01904 - 607774

Say I told you to ask his advice.

dunx

P.S. If you wire it separately to the o.e. pump I would expect it to be fine, add a hidden "kill" switch for added piece of mind.

 

Cheers Dunx,

Rick's only 30-40 min from me and have been meaning to call in at some point and see what he does/has (have heard a lot of good things about him). Will give him a ring tomorrow.

 

You can fit the 044 inline, you need a relay connected to the original fuel pump feed then a separate power feed for the pump itself. The relay will then start the 044 when the walbro starts. This is good for about 650-700bhp give or take

 

Don't walbro do a high flow pump?

Lateral Performance Ltd| Home | Fuel System | Fuel Pumps | Walbro Hi Flow fuel pump kit

Although....that may not be in-tank?!

 

I think that is just the 255lph pump?

 

slightly off from what the OPs asking, but would it harm the engine if you ran a bosch 044 with the swirl pot on a slightly modified engine or can you run a swirl pot with the in-tank 255lph pump?

Ricey

 

The swirl pot would work better as it prevent cavitation of the fuel, basically the swirl pot would be fed by the Walbro intank, but as it's name suggests the fuel then swirls, which means on track you do not get surge (fuel sloshing to one side of the tank and causing starvation), then the bosch takes a feed from this.

Running a bosch would cause no problem on a stock or slightly modified engine as long as the pressures are set correctly of the regulator and the fueling is checked

 

No, it's a "Hi flow" version of the 255lt, and I very much doubt you'll get 650-700bhp, or even close, out of an 044 on a Subaru.

 

Fair enough Having the swirl pot allows the use of twin pumps which can be a big help to fuelling or look to something like an Aeromotive pump

 

So Mark, could Dave run that pump in tank without the need for the Swirl Pot?

 

Cheers All ,

Had already emailed Mark about this and was quizing him about a few things. Had looked at the option of a swirl pot in the engine bay or in boot (i.e. installed 255 pumping to swirl pot with return to tank, then a bosch or simular pumping from swirl pot to injectors/regulator then return to swirlpot. However:

- Didn't want to put a swirl pot in the boot (firewall/bulkhead issues and I don't want a can full of fuel in my boot at the moment, lol.

- The second option of swirl pot in the engine bay and a second pump next to it is my preferd option but once I've had a pot made and bought the fittings, hose (Earls of cause ) and pump your looking at £250. Budget is tight at the moment so this is out the window!

Third option of a slightly higher flowing in tank pump is prefered. This also alllows me to install a swirl pot in the future if I find I require it.

Mark,

What kind of delivery (l/hr) would you expect from your hi flow pump (as a guide)?

Cheers,

Dave

 

Absolutely, but I've spoken with David, and it's a case of trying to making sure that what ever he does now, won't be redundant when he goes for the full set up.