The Diesel Stop banner

DIY Water/Meth kit

38562 Views 11 Replies 5 Participants Last post by  323flint
Thought I would throw a post together for the “do it yourselfer.”
Here is my DIY 2 stage Water/Methanol kit I put together for around $382.00

*If you just want a simple 1 stage kit this setup would cost about $280

Pump- (1) Shurflo 150-180PSI/1.5GPM purchased on “Ebay” from seller “Alcohol injection” $89.00
Water Tank- (1) Snyder Industries Horizontal Sprayer Tank 8 Gallon Capacity, Model# 10282 $59.99

Water Solenoids- (2) part # 7876K12 $41.24each

Filter- (1) 3/8” fuel filter “Autozone” $4.00

Hobbs Switch- (2) Picked up two of these at local automotive store. $30each

Brass fittings-

(9) 3/8” thread to 3/8” brass barb fittings

(2) 3/8” brass “T” fittings

(2) 1/8” brass 90* fittings

(2) 1/8” thread to 5/16” brass barb fittings

(1) 90* plastic 3/8” barb fitting for tank feed

Total- $40.00

Nozzles- $4.65each

I wasn't sure which nozzles to buy so I bought almost all of them to try different ones out.
(1)Part # 3178K61 [email protected] *This is my low boost​
(1)Part # 3178K62 [email protected]

(1)Part # 3178K75 [email protected]

(1)Part # 3178K76 [email protected] *This is my high boost

(1)Part # 3178K77 [email protected]
Total- $23.25

Hose- 3/8” ID 220PSI hose from LOWES $.55per/ft got about 20ft Total- $11.00
(1) Automotive relay SPST “Radioshack” Model: 275-001 Catalog #: 275-001 $6.00
(1)Green led “Radioshack” Model: 276-271 Catalog #: 276-271 $1.99
(1)Red led “Radioshack” Model: 276-270 Catalog #: 276-270 $1.99
(2) SPST Submini toggle switch “Radioshack” Model: 275-612 Catalog #: 275-612 $2.99each
12 gauge wire for pump
14-16 gauge wire for switches, lights and solenoids.
Assorted electrical connectors, fuse holder
Total about $30.00

Here is the schematic I drew up.

The two switches and two lights above my 4x4 cutout are for the Water/Meth.
Left to Right-

System on for low boost, Low boost active light, System on for high boost, High boost active light.

8Gal Tank in toolbox.

Pump placement under passenger side door on frame.
See less See more
1 - 5 of 12 Posts

T fitting in engine compartment.

Solenoid valves. Back-Low boost, Front-High boost.

Output of solenoids into intake.

Low boost bottom, High boost top.
See less See more

Hobbs switches. Low boost bottom, High boost top.

I would also like to find out what everyone else is running for nozzle size "flow per hour @ specific PSI" on their kits? Currently I am running my pump at 140PSI and seem to be getting a good fine mist from both nozzles. How do you know when you are spraying too much? I am still new to this and would like as much input as possible.

I have been running about 30% Meth with no plans to go any higher. I defiantly notice a difference when the Water/Meth is spraying.

*Please let me know if you would like any more information or if you have information please post up.
See less See more
Nice job. How long does the 8 Gallons last you? So the low boost side sprays at 5 lbs of boost?
Not sure how long the 8 gallons are going to last yet. Yes, I have the first stage spraying at 5PSI. I haven't had any issues spraying that low yet like engine rattling or power loss.
So is there a noticeable difference while driving around town at the 5lbs of boost? Smoother? Quiter? More Power? I also hear some guys running 100% water to just lower egt's and some have also said the 6.0 can't take as much methanol as some of the other motors.


p.s. My race boat runs on 100% Methanol :D
I defiantly notice a difference here at 4000'. Off the line I have better throttle response and it does feel like it pulls harder once I lock the converter. Right now with a 32% meth mix egt's seem to hold and not climb.

I will probably run 100% water and see if I notice any difference in the next couple weeks.
1 - 5 of 12 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.