DIY WI

[the-dubster]

Is it feasible to utilise a fuel injection inline pump - running at 5.2 - 5.9 Bar ( Bosch K-Jet system for example) for WI? They should be cheap as chips from a scrappy and if it wears out in 6-12 months (and it probably will) I can just get a new one. The control unit, water level sensing, boost switching and possible 2 stage jetting is easy for me to sort out (once I figure out the sizes of jets to use), but I'm wondering if the system would still work with a fuel pump? The system is for a 306 Turbo Diesel which will eventually be running about 18-20 PSI of boost and I'm looking to cobble up an equivalent to the 1S system, but with water level sensing and boost cutting (back to 14-15PSI) in the event of water outages.

PS. The system will be running 12.5% meth/water max (as recommended for diesel by Richard L), would the pump handle this?

Thanks

Andy

[Richard L]

Is it feasible to utilise a fuel injection inline pump - running at 5.2 - 5.9 Bar ( Bosch K-Jet system for example) for WI? They should be cheap as chips from a scrappy and if it wears out in 6-12 months (and it probably will) I can just get a new one. The control unit, water level sensing, boost switching and possible 2 stage jetting is easy for me to sort out (once I figure out the sizes of jets to use), but I'm wondering if the system would still work with a fuel pump? The system is for a 306 Turbo Diesel which will eventually be running about 18-20 PSI of boost and I'm looking to cobble up an equivalent to the 1S system, but with water level sensing and boost cutting (back to 14-15PSI) in the event of water outages.

PS. The system will be running 12.5% meth/water max (as recommended for diesel by Richard L), would the pump handle this?

Thanks

Andy

I wouldn't recommend you to use a fuel pump for water or water/methanol mix. One part inside the fuel pump is a motor, made up with iron. The water will attack the iron and form rust. I also think the bearings are iron based.

YOu can get yourself a shourflo or flojet pump, they are relatively low cost.

[the-dubster]

Cheers for the gen Richard

Good point - well presented, rusting pumps may fail a bit too quick! :lol: Have to check out the shurflo and flojet pumps, if I can't find suppliers and costs you just know I'll be coming right back here to hassle you again!

Ta for now

Andy

Edit.

Found some suppliers
Flojet 2130-112 (5.9 Bar 12v dc) ?130 +carriage & vat (http://www.dualpumps.co.uk/)
Flojet 100psi ?118 + carriage & vat
Aquatec 90psi ?95 + carriage & vat (both from http://www.reachandclean.co.uk/water_pumps.htm window washers!!)

Still searching for Shurflo though

Andy

[Prometeus]

Well, it is official.

I produce the mixture Water Methanol 50/50 in Italy for all clients that are in need... :lol: expecially the turbo diesel car with Aquamist!!! :lol:

Regards. Daniele

[Richard L]

Cheers for the gen Richard

Good point - well presented, rusting pumps may fail a bit too quick! :lol: Have to check out the shurflo and flojet pumps, if I can't find suppliers and costs you just know I'll be coming right back here to hassle you again!

Ta for now

Andy

Edit.

Found some suppliers
Flojet 2130-112 (5.9 Bar 12v dc) ?130 +carriage & vat (http://www.dualpumps.co.uk/)
Flojet 100psi ?118 + carriage & vat
Aquatec 90psi ?95 + carriage & vat (both from http://www.reachandclean.co.uk/water_pumps.htm window washers!!)

Still searching for Shurflo though

Andy

Try www.shurflo.com or 01293 424050

[the-dubster]

Cheers Richard, you are the oracle :D . I should have guessed the site URL for Shurflo though :oops: :lol: ..............ah, I remember why I hadn't tried that site yet, the content won't display on our work computers, bugger :mad: - best I try at home instead - what am I going to do at work all day now :? ??

(Nobody need answer that.............. :lol: )

[Prometeus]

Hi dub... came here sorry for last night but it was 1 year i was blaming to get in the forum and just last night I was able to


Well about the pressure... it depends on which engine are you working on.

[the-dubster]

Don't apologise, it's me who hi-jacked the thread, not you.

The engine is a 1.9 Ltr turbo diesel in a peugeot 306
It currently runs 14 PSI of boost, but will be wound up to 18-20 PSI for the Water injection.

I'm trying to keep the cost down as nearly ?400 for a system is way too much - the cheapest 100 PSI pumps I can find are about ?150

If you can run an effective system at lower pressure I can sort out a cheaper pump.

Building a simple control system is quite easy too.

Is this enough information for you?

[Prometeus]

I work in bars... but I think that this is a common trouble to every diesel engine.. I think you're talking about 0.9 Bar... aren't you?

WI is currently working only when the boost is on.
Be lower than boost pressure is impossible... even 18 - 20 PSI of WI boost is too little... at least 3 or 4 times the Turbo boost pressure, probably even more. Need to "atomize" the water in something that seems gas.

I'm sorry but I don't know UK prices... I live in Italy... :sad:

[the-dubster]

1 Bar = 14.50377 PSI so yes, 14 PSI is about 0.95 Bar

The boost is to be raised to around 1.3 or 1.4 Bar, so the pump needs to be 4.1 - 5.5 Bar (60-80PSI)

It seems like I still need an good pump, but at least the 4-5 Bar pumps are cheaper than the 7 Bar ones (around 100PSI)


Do you use a similar setup to the aquamist system '1S', just a pump, nozzle and boost switch - only pumping water when the boost is on (accelerating) with a fixed output (not changed to match fuel) and how do you get away with using 50/50 methanol to water if you still pump at 4-5 Bar when the aquamist pumps at 6 Bar and must use less than 20% meth to stop detonation?

Grazie per la vostra assistenza

(If that makes no sense then I had better keep to English :lol: )

the-dubster


And there is no reason to be :sad: when you live in Italy :D

[Prometeus]

Yes... that's the reason that I don't know english prices :D

Yes it is so.

You may ask Richard L to make you a System 2S for a DIESEL car... he knows... but always on acceleration...

We don't ratherly have detonations in the diesel engines we prepared... and we still use Aquamist 1S and 50/50 methanol...

I don't remember where I posted it... but if you have a 0.9 bar of pressure should be useful to have a nozzle of 0.8 mm and you might won't have troubles... :D

This way we prepared an Alfa GT 1.9 JTD and jumped to 207 HP from 150 HP, of cours also with electronics... veeeeeeeeeeeery goooooooood :D

But the Italian Style is so... not all power but all you have immediatly.

[the-dubster]

Thank you for that, i'll experiment when i've either got enough money for the Aquamist system :? or got a cheap enough pump for my own system :smile: . Regulating the water flow from acceleration won't be hard, either a potentiometer on the throttle linkage or a pressure sensor and not boost switch would enable me to produce a flow rate proportional to demand.

I'm still trying to modify the spray nozzles I've got for the intercooler sprayer i'm building - so this'll have to join the queue. :roll:

Plus I think it's now time to wind up the boost to about 1.3 Bar :shock:
Wish me luck :lol:

Thank you again :D :D :D

Andy

[the-dubster]

Managed to get a Shurflo 100PSI of Fleabay USA - brand new and shipped for $101 (about ?57) now I call that cheap. Time to start building the DIY WI. Quick question though, one of the DIY sites on the 'Tinternet advocates the use of a water hammer to smooth out pressure fluctuations. Is this necessary and where can you get them from/what are they called over here in good old blighty?

Cheers in anticipation.

[AndrewC]

Water Hammer is just a type of Accumulator Tank or Anti-Surge Accumulator.

Aquamist do a 30cc one for about ?35, and a 100cc for about ?45 not sure how they work on Shurflo pumps although I suspect it's more to do with the overall throughput of the system so 30cc is probably fine.

http://www.aquamist.co.uk/sl/plist/pic3/806-410/806-410.html

Larger ones (~2 Litre) for marine use are about ?30 also.

Andrew...

[the-dubster]

Now THAT is a quick reply! Thanks for that, much appreciated.

Andy

[Prometeus]

Hi dubster,

How preparations are going on the Peugeot??

You may visit also www.canmarine.com for water and W/M tanks. They're italian of course... :wink: They're in Eltex...

[the-dubster]

They're on hold at the moment, all my spare time is on getting the house ready for our Halloween party! Finishing those 'little' jobs like tiling the kitchen floor, plastering the bathroom walls and then getting all the props and scares sorted for our guests.

Soon as I get 5 minutes to myself i'll crack on with fitting the new turbo and plumbing up the WI.

I'll keep you posted

Andy

[Prometeus]

I think we're running high with the Alfa 1.9 Mj... 15.77 on quarter of mile... :shock: