Any hose that need to take a vaccum has to be specially constructed and reinforced as basically its being subjected to forces in the other direction (suction rather than expansion). I'm sure you know all this anyway, but just thought I'd mention it.
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fitting bosch 044 fuel pump
- Thread starter h17och
- Start date
it may not need it but i guess the supply to the pump may be under a vaccum!? depends how well my s3 pump copes on getting it to the bosch in time
No point in scrimping on something like that, if its ever under vaccum your underfueling which is nae good
Best of with vaccum rated stuff though. especially after your spent so much time and effort over the rest
Best of with vaccum rated stuff though. especially after your spent so much time and effort over the rest
too true but where would i get 13mm id hose thats reinforced? struggled to find 13mm id normal stuff lol
Well the 044 is a cossie pump so look at cossie parts are rallying suppliers. The S3 pump has a swirl pot like our standard ones which should act as a resouvoir so your 044 pump shouldnt starve. However I was led to believe that the line running to the 044 pump must be one size and not a reducer as then there would be a possibility it could starve.
thats a good point pj, but that means complete new fuel lines and also that i can run the s3 pump!! which i know doesnt have to be the way as jbs just added one into cupra_matts original setup.
i think what you are saying is true if the bosch is the only pump and its gravity fed....
wheres badger when you need him..........(long wait)
....... Badger!!
(another long wait)
BADGERRRRRR!!!!!
i think what you are saying is true if the bosch is the only pump and its gravity fed....
wheres badger when you need him..........(long wait)
....... Badger!!
(another long wait)
BADGERRRRRR!!!!!
I can't see there being a starvation prob when you're running an inline pump after the stock pump if using good quality hose.
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Hello
Been busy.. soz.
The ability to deliver the high flow fuel/pressure from the 044 pump will need good input delivery and hose else the suction side of the pump *could* collapse as it tries to scavenge more flow from the 044 than the S3 can deliver.. I know Dans A3 had a problem on the hose connecting intank pump to the in line pump that the hose collapsed on suction (inline obviously suk'd more than the intank could blow - ohhh errr
)My setup is S3 in tank feeding an inline MK1 Golf GTi (K-Jet pump), but mine also has the mk1 accumulator which will act as a resevior store of sorts. Not been an issue since Oct2005 when installed by elton.
http://www.pirtek.co.uk/pdf/catalogue_sections/cat_section03.pdf
Try page 2 and 3 see what you think
Try page 2 and 3 see what you think
Possibly. I was told to think of it like a straw that has a larger hole on the end you are sucking on than the hole that is in the liquid if that makes sense. Takes more effort to fill the straw as it has the be sucked through a smaller hole and less fluid can go through the inlet than can go through the outlet. Dont think I explained that anywhere near as well as when it was explained to me! lol
With a genuine pump ie standard cupra or S3 they all have swirl pots so this should act as a resourvoir and as long as that intank pump stays working the 044 inline should never empty it as long as the pipe between them is right. If the intank pump fails the inline one should be able to get enough fuel through the intank pump to run still but not on boost etc.
I'll try pulling the power on my std pump and see how the car runs on just the inline (sometime)..
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From what Im told it will just about run and any type of remotely heavy right foot action will cause lots of nasty damage!
relying on suck past from the intankpump?
be an interesting test for someone (else) to check.
Logging a/f graphically whilst doing so?
relying on suck past from the intankpump?
be an interesting test for someone (else) to check.
I was told it would fuel enough to get you home type thing and that if the intank pump went you would definately notice it.
Don't misunderstand me, I'm not looking to disagree.
Maybe I'm missing something...I've fitted an inline pump on the understanding that if I get sudden failure of my in-tank pump whilst under serious load, my inline would supply the fuel to prevent sudden lean-ness, detonation and loss of piston crowns /valves etc.
If it isn't going to supply the goods at that crucial moment, I don't quite see the point of having it........
got everything in gates reinforced high pressure fuel hose
up to 10mm in stock
(takes up to 10bar pressure but iirc that drops a bit if using 10mm)
only got up to 3/8 (9.52mm) in copper+nickel tubing too
if you are worried about that 13mm stuff look at the end should look like 2 pipes in one with a sort of string braiding in between.
saying that 13mm you need it that large a bore ?
only running 16mm on the dragster and that shifts fuel as fast as a petrol station pump
up to 10mm in stock
(takes up to 10bar pressure but iirc that drops a bit if using 10mm)
only got up to 3/8 (9.52mm) in copper+nickel tubing too
if you are worried about that 13mm stuff look at the end should look like 2 pipes in one with a sort of string braiding in between.
saying that 13mm you need it that large a bore ?
only running 16mm on the dragster and that shifts fuel as fast as a petrol station pump
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Dont know about it going in an on boost scenario. Would imagine that it would be the same and supply enough fuel to just about keep you safe until you were off load aslong as you didnt try to go on boost again. Surely the point in having the inline pump is to give enough supply generally not just incase of failure of the intank pump although it should act as a back up if it did give up.
its not really supply as demanded like a carburettor setup its pressuring and holding a fuel line system at either 3/4 bar
looking at the 044 specs if you regulated it up to higher psi/bar the 044 handles 200lph @ 5 bar which covers nearly 700bhp if you are running it on a 4bar pressure regulator you'd be fairly covered on its own
worth looking at what pressure your going to run as see other sources saying 270lph @ 3bar
if not using a 4 bar regulator minimum i'd consider an external adjustable regulator or even a swirl tank from the standard pump before the feed to the 044
get it how u want it then
looking at the 044 specs if you regulated it up to higher psi/bar the 044 handles 200lph @ 5 bar which covers nearly 700bhp if you are running it on a 4bar pressure regulator you'd be fairly covered on its own
worth looking at what pressure your going to run as see other sources saying 270lph @ 3bar
if not using a 4 bar regulator minimum i'd consider an external adjustable regulator or even a swirl tank from the standard pump before the feed to the 044
get it how u want it then
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A Walbro inline will produce up to 10 bar
http://www.inlinefuelpumps.com/images/gsl392-psi.jpg
Bosch
http://www.lucasinjection.com/580 254 044 flow chart.jpg
http://www.inlinefuelpumps.com/images/gsl392-psi.jpg
Bosch
http://www.lucasinjection.com/580 254 044 flow chart.jpg
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