Water Knock

[KBaucom]

I have the snow performance water/meth system on my truck and when sled pulling i have a knock and it sounds lik a gas motor spark knocking but when i turn the water off i don't knock. I just would like your opinions on what causes this?

 

[ThrottleJockey]

Too much d@*m water. Your injectors aren't big enough.

 

[wildmanben]

are you running methanol/water mix? If so how much? We had to mix a 40% meth and 60% water to get the knock gone on my buddy's 12v. And he has about the same setup that you do.

 

[KBaucom]

Well i have tried stright water and it was not bad as when I was runnng 25%.

 

[dsherman]

I have the snow performance water/meth system on my truck and when sled pulling i have a knock and it sounds lik a gas motor spark knocking but when i turn the water off i don't knock. I just would like your opinions on what causes this?

You are running to much water. Back it off a little and the knock will stop

 

[boydo]

I agree, too much water.

 

[KBaucom]

I did back it off as much as i can but still there

 

[dsherman]

I did back it off as much as i can but still there

Are you running two nozzles or one, if two run the smaller nozzles or one lg and one small if you a already tryed running this combo then go down to one nozzle. Try the smaller one first then if every thing is ok then go to one lg nozzle and see if that runs ok if so you are done. You may not be able to run two nozzles of any size

David

 

[pwerwagn]

What nozzles are you running? the 325's or the 625's??

do you have the variable controller or just on/off?



-Jeff

 

[KBaucom]

1-325

1-635

I was going to try 1 nozzle next pull

thanks for all the help

 

[ThrottleJockey]

Try some Mach 8 injectors. The fuel/water ratio is just wrong.