I just bought the Shurflo Pump...$69 A lot cheaper than a race pump.

 

did u get it at northern hyd? its on sale for 49.99

 

Must be doing it by region. It's still $69 here! The rest is probably freight to get it here!

 

http://www.northerntool.com/webapp/w...-1&search=2687 ???????

 

nevermind this link doesnt work for some reason

 

copy and past it....worked for me

 

go to the site and click on the search bar and type 2687 and it will take u to the pump. guess they figure all u rich texans dont need the sale price!

control-c to copy and control-v to paste, right?

 

The higher efficiency of the diesel engine (better MPG) as compared to gasoline is that it is a "lean burn" engine. The air is not throttled and there is way more oxygen then necessary to burn the fuel. Gasoline engines are controlled very close to "just enough" oxygen to burn the fuel. You get more power from a diesel by virtue of the higher mass flow through the engine for the same fuel value when it all expands. Water injection further increases the mass flow due to the water mass and the cooler temperatures of the inlet charge. Furthermore, it also adds expansion due to vaporization. The down sides are increased peak cylinder (or firing) pressures, and the increased flow through the exhaust side of the turbo. This can create excessive turbo speeds, boost pressures and boosted air temperatures (before intercooler). This is all further compounded by the the complexity of control for the EGR system. Unless you have a way of measuring firing pressure, the effects won't be apparent until you blow a head gasket. I think the first thing that will happen is you will blow the hose off the pipe from turbo to intercooler due to the higher boost pressures. It will definitely be interesting to see what happens.

Don't forget that you have an EGR engine - that extra moisture in the exhaust will recirculate along with sulfur oxides from the sulfur in the fuel forming sulfuric acid. Sulfuric acid condensation in the intake will be a powerful corrosive.

 

thanks 4 the vote of confidence!!!!

 

right click on the link and copy...throw it in your address bar and off you go...deleat the first part of it that FTE puts in there

 

hmm, i thought it was becuase diesel fuel has more "energy" per ounce than does gasoline, and the fact they run ~18:1-20:1 compression ratios, plus 20-40 lbs of boost.

however, i must admit, i have no idea what a/f ratio a diesel runs...

as for water injection, be careful....

a good freind ran W/I on his ~650hp 5.0 stang. was ALWAYS a PITA to get right, had to replace the tank numerous times, never got what was advertised out of it. finally threw it in the trash and added an intercooler, problem solved!

the brand he used was a snow performance........
also, i want to know how straight water adds hp!!!! (to a diesel that is)
the ONLY reason water injection adds power on a gas engine, is it allows you to run more ignition timing....for example:

we will use my 540rwhp 89 5.0 with 13lbs of boost, AND 10:1 compression, on pump gas.
i ran 12* intial timing, and 91 octane fuel. through my eec tuner, i allowed 10* of advance by 2800 rpm, so a total of 22* of timing. this would destroy a gasser on 91 octane in a heartbeat, so at 2900 rpm, it was backed down to 20*, and then 3*/500 rpm till it was finally at 12* total @ max boost. a vortech supercharger does not give much in the way of boost untill ~3500 on my setup, therefore i was fine....the curve was actually a bit more complicated than that, but you get the idea.
had i run water injection tho, i could have had a pretty much stock timing curve, and would have been running 32-34* timing at max boost due to the higher octane of meth, and lower intake temps due to both water and meth....this is why water injection allows more power, more ignition advance with pump gas.... i could have done the same timing setup with say 117 octane xylene (in fact, i did...) instead of w/i....

in other words, i have no idea how it COULD increase power on a diesel engine, since there is no ignition timing....i can see how it could allow for modifications that would normally increase the egt's to extreme levels to now be safe, thus you would have more power, but injecting water alone, very minimal increases do to a denser air charge, like say... 5hp?


anyhoo, my buck fitty

 

Will definetly pay to unhook the EGR before you start burning the stuff....

 

u r right, as long as u arent overfueling. straight water wont help a thing on my stock tuned engine, but for these guys w/ the black smoke rollin in hp mode, the water does two things. it cools down the intake charge, allowing more O2 in, and it steam cleans the combustion chamber. more O2 burns more of the fuel in the chamber, making alot more power. when they add alky to it, it cools even more. also the faster burn rate of alc acts like a timing advance, giving more time to burn what might not have before, and making higher cyl press where it is needed (the second 1/4 of the power stroke). and meth is that much more go-juice in the hole

btw, diesels dont run by a/f like gas, it always takes a full breath of air. could b 2000:1 a/f if u wanted

 

I guess. But the trip back to northern wouldn't be worth the 20 bucks. I guess they just got me. It won't be the first or the last.

 

That makes sense...that is why Ken at DPS told me not to run propane or doublestacked chips with a high percent mixture of alchohol in the system. Very straightforward explanation we have been looking for here. Thank you very much. Any danger of running TOO high cylinder pressure if burning only at a moderate level?