Anybody got any part numbers for external fuel pumps and filters, such as bosch ones...

Ideally with threaded fittings.. 9/16th or similar...

Porsche turbo filter??

Ideally about 200lph at 7 / 8 Bar.

David

Mark Aigin is your best bet to ask such things.

On further advice, pressure range is a bit low..

David

the highest spec bosch pumps are cica £500!

the AN11101 or whatever would only max out 824cc/min injectors at 75psi pump pressure.

1lb/hr = 0.609 L/hr

Their 11104 pump would do the trick though, maxing out 1395cc/min injectors at 75psi pump pressure.

Sounds like a good investment to me, a single pump that can do everything you need.

paul

I dont have any more info on the bosch, apart from I know it is widely used. I have a video of the rigoli racer ( white car ) and it uses a single bosch pump, as do many high power cossies.
It is also quite expensive which is why I chose to use the Aeromotive pump, which also pumps a lot more fuel for a similar pressure. It also looks good :D
The Aeromotive is the same as Paxton AFAIK, and a lot bigger than the bosch.
The SX range of pumps flow even more again.

Yeah, I know the bosch pumps are expensive..

I was going to use two bosch pumps, but after getting a price on the motorsport range I was shocked..

I can get a Group A Cossie Pump for about £170 iirc... so need to check the flow graphs for that one..

I have 2x walbaro pumps squeezed in the tank at the moment (or will do) then these will supply the surge tank..

David

2 walbro pumps should be enough, get them baffled in the tank and leave it at that for now.

That 11104 aeromotive pump will flow more fuel@75psi than a walbro one will at 0psi.

Paul

im wanting to run two pumps regardless... one per rail..

Dunno why.. but got a strange feeling I need a lot of fuel :D

Off to get specs for bosch pump..

David

david,

I dont understand why you need two warlboros in the boot ifthey are only acting as lifter pumps.

cos aigin recommended that setup... and as im running considerably more power than you :p

Because nitrous needs fuel too...

Stevie,

The problem with the 11101 pump is that for high boost, like 2bar, combined with raised fuel pressure, say 3.5 bar relative, that means total pump pressure of 5.5bar, or 80psi, and the flow graphs suggest the flow rate is significantly lower at that pressure.

Paul

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David,

check with mark as to whether he actually recommended that set up or said there was no harm in overkill!

We decided as we dont know the return pressure of the walbaro to surge tank then we dont know the flow rate of the pump (should be high still) then it was better to have two..

Besides 4 noisy fuel pumps sounds good :D :rolleyes:

David

A single low pressure pump ( although not an internal one ) will be able to flow more than the 2 walbro pumps I would think. My feed pump ( 100 gph ) cost about £80 from Real Steel. They can supply more expensive ones that wil flow up to 140gph.
4 fuel pumps is a lot to go wrong. Even 2 is bad ebough, which is why I will be getting rid of my 2 pumps, and getting a proper fuel tank made up so I can run a single pump direct from the tank.

I know.. but Ive got 2 walbaros now.. and it involves more work.. which is good :D

sad arent I?

Even fuel pressure reg will be modified :D

Hoses should arrive this week.

David

It's worth noting that the pump flow rates listed on the US sites, if in "gallons", will be US gallons, and only 80% of an imperial gallon.

1 US gallon = 3.78 lts.

I'm not suggesting that people have to have the same pump set up I do. Part of the reason for my set up, is I wanted to feed the twin fuel rails independently. Then, I had a concern, that if the surge tank were to run low, just as I was about to come onto a straight, could a single in tank pump supply enough fuel to not only feed the engine, but refill the surge tank too.

It was easier to fit another in tank pump, than try and simulate the conditions.

Mark.

i based flow calcs from pounds of petrol per hours

David

If you apply your 'overkill' logic throughout the build, I suspect you will end up with one HEAVY car !!
I prefer the minimalist approach which IMHO will win every time :D :D

Andy.. It might be heavy.. but Ill still piss on your top speed :D

Mark YHM regarding 6th Gear.. so pull your finger out and reply :D

Can you bring those other bits up next month?


Ps Andy I intend to weigh the car.. so will be interesting to see what it weighs..

Anybody got the weight for a 94 wrx wagon vs a 94 uk wagon??

David

I think you'll find that it's written "wheelbarrows". Or at least, for the amount of fuel that you're shifting I think one or two of those would be more appropriate ;)

LOL...

David

So cheap fuel filters?? with threaded inlet and outlet?

Filters?

Demon Tweeks catalogue ? Expensive but nice :)

Again I am using the Aeromotive fuel filters. They come with JIC threaded fittings, and can take either a stainless mesh element, or a paper element both of which are renewable. I cant remember how much it was, but dont think it was that expensive. The replacement elements arent dear either, and they are compact and look good. Can be used either as a pre-filter for the pump, or after the pump.

I was thinking more along the lines of an oem filter.. there must be something large.. with a decent flow rate.. and threaded fittings... similar to the old golf gti ones.

David

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Although not the prettiest in the world, Have you considered the possibilty of using an oil filter and remote housing as a fuel filter?
The fuel filter I used simply has a replaceable paper element, so it isnt so much different to an oil filter, although a lot smaller.

hmm.. think Ill pass on that one..

David