Dyno'd yesterday with water/meth.

[Woodenhead]

I finally had my truck dynod on Friday. Did a couple of runs with just #2 (blended winter fuel) and a couple of runs with the water/meth (wiper fluid) injection going. Dyno was a DynoJet with heavy (7400lb I think) rollers at Dynomite Diesel Performance in Monroe Wa.



Here’s the results.



Straight #2

Actual (uncorrected) = 425hp/895ft-lbs

SAE (corrected) = 413hp/871ft-lbs



With water/meth (-40F wiper fluid = 50/50)

Actual (uncorrected) = 459hp/945ft-lbs

SAE (corrected) = 447hp/920ft-lbs



I have copies of the charts on my computer, just need to figure out how to get em up here.



Conclusion

Water Meth injection made a difference of about 30hp/50ft-lbs but with lower EGT’s



Interesting Note:

When running with the water meth. injection, as soon as it hit 3kRPM it sounded like somebody threw a handful of fire crackers in my exhaust pipe, the smoke cleared up instantly and the motor started sputtering (combustion quench). When I first installed the system I experienced combustion quenching at lower RPMs when not running enough fuel with the water/H2O, basically just not enough pedal in it. This time it was from the governor cutting the fuel at WOT. I generally shift or let off before it starts de-fueling on it’s own but during the dyno run they run it through to the end. When it happened I just about **** myself, It’s a little spooky when your trucks screaming away then starts it’s own internal firworks show (can’t be good for the turbo). I made sure Mike understood he needed to keep er down once the pump was going (not an issue on a Dyno run) but never thought about when it started de-fueling at the top end. Probably also had something to do with the lower engine load on the Dyno vs load on the road.



All is well.



Mike

 

[Bob Wagner]

Great numbers, skip the pm

 

[csevers]

Interesting

Has any one dynoed with just water?or tried different mixes of meth and water so see the affects. How much water were you pushing?? cc per min or gal per min



Thanks

Craig

 

[Jim Fulmer]

With your setup of a #10 and a HX-40 you should be running (2) 625 nozzles and the high pressure pump as I have this setup on a stock turbo'd truck, also if your going to dyno you should have at least a 40%meth-60%water mix..... this is if your chasing numbers, other than that your not going to see a big improvement. All the dyno test I've ever done were with a 50/50 mix.



Jim

 

[Chipstien]

I believe the rollers at DDP are 10,000 pounds. Will someone correct me?

 

[Sticks]

Those were the same #'s (increase) that jrandol got with his kit on plain ol' washer fluid.



We have a dyno day next weekend in Fort Collins, and I am looking forward to running mine. I already have the 50/50 mix so we'll see how I do.

 

[jrandol]

Sticks is right on the numbers for my truck. I still need to loosen up the fittings around the filter and injector for this setup. Have had no time or a garage to do it in, it may not happen before the Dyno Day in Indy Feb 28th

 

[csevers]

So how many cc's to the gallon? How much gal/per min are you pushing?



Craig

 

[Woodenhead]

With your setup of a #10 and a HX-40 you should be running (2) 625 nozzles and the high pressure pump as I have this setup on a stock turbo'd truck, also if your going to dyno you should have at least a 40%meth-60%water mix..... this is if your chasing numbers, other than that your not going to see a big improvement. All the dyno test I've ever done were with a 50/50 mix.

That's what I'm running, the bigger pump with 2 x 625ml nozzles. At the moment I still have the pump set at about 100psi (Matt said 4 turns on the screw would be about 100psi).



According to the chart at the Snow Performance web site a 625ml nozzle at 100 psi = 720 ml/min/nozzle. So two nozzles would be 1440 ml/min. As mentioned before, the fluid I'm using is about 50/50.



Any thoughts on using a hydrometer to check the alcohol content of the fluid. Maybe one used for checking alcohol content on homebrewed wine. (Just thinking out loud here)





Mike

 

[Sticks]

Does the washer fluid bottle have a freeze point on it? Someone posted a chart of the water/meth freeze points according to mixture. I think it was in the "Water Methanol installed" thread

 

[Jim Fulmer]

The stock turbo numbers I talked about were with the high pressure pump wide open and (2) 625 nozzles and 50/50 mix of real methanol and water not a factory mix. The EGT drop was 200 degrees on the dyno with a 70hp-110T/Q gain!



Jim

 

[Woodenhead]

Does the washer fluid bottle have a freeze point on it? Someone posted a chart of the water/meth freeze points according to mixture. I think it was in the "Water Methanol installed" thread

mdivincentis posted the chart here part way down page five. I'm still using the -40 fluid I posted on that page.

The stock turbo numbers I talked about were with the high pressure pump wide open and (2) 625 nozzles and 50/50 mix of real methanol and water not a factory mix. The EGT drop was 200 degrees on the dyno with a 70hp-110T/Q gain!

Thanks Jim,

I got the high pressure pump just in case I wanted to go further than I could with the smaller pump. I'm still at the initial setting recommended by Matt as a starting point. Looks like it's time to crank it up a little. I think I need to ditch this variable controller first and install a hobbs switch so it'll come on at higher pressure and come off sooner.



Mike

 

[Jim Fulmer]

Mike that is the way mine works on a hobbs switch, I have it come on at 30 psi and have not had any trouble with it doing so as long as your on it, I have tried it in valet holding it at 35 psi and after 5-6 seconds it loads up with water but at WOT it does just fine.



Jim

 

[Sticks]

Originally posted by Jim Fulmer

Mike that is the way mine works on a hobbs switch, I have it come on at 30 psi and have not had any trouble with it doing so as long as your on it, I have tried it in valet holding it at 35 psi and after 5-6 seconds it loads up with water but at WOT it does just fine.



Jim

I have experienced the same thing with mine (stage 1, 2- 375ml injectors, 140 psi pump, variable controller 8 psi start ~ 25psi full on). While running at highway speeds, the small hills force the boost up to about 10 - 12 psi and the engine starts to flood/miss. Same thing with the steeper hills at even 25psi. If you are not WOT it floods the system. I am going to probably upgrade to stage two variable controller (25psi start, full on @35) later this spring and try that. This flooding the motor is kind of killing my plans of EGT control for mountain towing/hauling.