DIY alcohol injection. - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
Go Back   Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums > Cobalt SS Discussion > How To: is the premier Chevrolet Cobalt Forum on the internet. Registered Users do not see the above ads.
LinkBack Thread Tools
Display Modes
Old 06-18-2007, 04:35 PM   #1 (permalink)
Join Date: Jun 2007
Posts: 4
DIY alcohol injection.

DIY alcohol injection


-Pump- The pump comes from Part # 2687. It flows 1.02gpm @60psi and is capable over 100psi (adjustable screw on top/bypassing the pressure switch). 3/8 inlet and outlets (female), with no fittings supplied. $69.99

-Nozzles- has the nozzles you need. Search for ďmisting nozzlesĒ . They are just the standard cone spray (not hollow) brass nozzles. They come in sizes m1-m15 (@100psi) and are (I believe) 1/8" NPT male connector (barbed fitting needed). $3.81 each.

-Gauge- The same place as above sells a 0-160psi gauge. You donít need the gauge but it helps with tuning the pressure of the pump. Part # 3793K13. $9.33

-Check valve/solenoid- There are 2 choices here. You can either get the check valve from (Best), which is a 1/4" NPT female (no barbed fittings supplied). It has a 22psi cracking pressure so it will never open under vacuum, and itís brass. $29.99. Or you can get a solenoid from them for $39.99.

-Boost switch- Adjustable one from coolingmist again. Itís adjustable from 1-25psi, normally open. $24.99

-Reservoir- Go to the local auto parts store and get yourself a radiator overflow. The biggest you can fit the better. ~15 bucks.

-Lines/fittings/misc- Auto store for the lines. 1/4" fuel injection line is best. The total length depends on how you set it up. I like the keep the lines short as possible. A bunch of small hose clamps. The fittings can be bought at home depot (1/4"npt barbed can be found there, but the 1/8"npt will probably have to be bought at the auto store or possibly from . Youíll also need some wire. For the pump 10 gauge, and some thinner stuff for the relay/led etc.

-LED- Radioshack. Get whatever color you like. Youíll also need an LED holder from there too.

-Relay/fuse holder- Just a regular 5 terminal automotive relay and a fuse holder. 10-15 amp fuse (blade or tube style both fine).


Refer to the diagram for installation. Some things to remember:
- Keep the solenoid or COOLINGMIST check valve within 12" of the nozzle

-Use teflon tape or pipe dope on the fitting. SOLDER your wires. The last thing you need is a wire falling off while on the ragged edge of detonation.

-Donít take apart the nozzle. If you do and the pill falls out the slotted face faces up. Just donít do it

-Terminal 87A on the relay is NOT used.

-To test the system (after itís hooked up of course), turn the ignition on and ground terminal 85.

-Adjusting it is pretty easy. Run the car and build boost slowly. Watch for the led to go on (I believe they are sent out at 10psi closed) and note what psi itís at. Youíll have to find out how early to turn it on depending on what your car likes. If it bogs itís too early, or too much pressure, or too big of a nozzle or a combination of those. It you turn it on too late, or have too small of a nozzle, or not enough pressure, or a combination of those you will detonate. Youíll have to research about alcohol on your car to find whatís the best starting combo (what size nozzle, starting psi, and pump psi) for you and go from there.

-I used the rubbing alcohol. You can get it in 90/10 mix, and I think 50/50. Youíll have to look at them at the store. Wal-Mart has the cheap big bottles of it. If you use denatured (home depot) or methanol should use Klotz lube in your pump.

-Keep it clean too; you donít want clogs in your lines.

To run a dual stage system, measure the resistance across the terminals on the pump and get a power resistor that is Ĺ of that reading. It has to be at least a 10 watt resistor too or it will fry. Install it according to the RED in the diagram.
blueta is offline   Reply With Quote Quick reply to this message
Sponsored Links
Old 06-18-2007, 08:34 PM   #2 (permalink)
Join Date: Aug 2006
Posts: 2,649
and this is not going to fuck my car?!? any proof, or backup for this? Im not flaming you or anything, just very cautious
JohnsRallyYellowSS is offline   Reply With Quote Quick reply to this message
Old 06-19-2007, 07:26 PM   #3 (permalink)
Join Date: May 2005
Posts: 93
Pics would be nice...

and where did you install your nozzle? I'm guessing before the TB...
smartmts123 is offline   Reply With Quote Quick reply to this message
Old 06-20-2007, 09:00 PM   #4 (permalink)
Join Date: May 2007
Posts: 23
ive seen his kits he has made on his gn's. and he made me one i had on my supercharged mustang. very nice kits
SuperSlow07 is offline   Reply With Quote Quick reply to this message
Old 06-21-2007, 04:28 PM   #5 (permalink)
Join Date: Jun 2007
Posts: 4
I don't have one on my car currently. I just have a stage 2 so I really don't need it. Just like anything you can mess up your car with it, so you should have something to scan/tune your car. Alcohol injections is used for a couple reasons. Cools down your intake charge (think liquid intercooler) without any pressure drop like air/air intercoolers. Also a great addition to our cars with our current air/water intercooler. It adds fuel, so it can be used to help max out your combo. Octane is also a great benefit of this. Most alcohols have high octane (have to look them up to get exact #'s). So more fuel, octane, and cooling makes it a great mod when tuning for more power. I've installed them before the tb (buick grand national), and after it (pontiac gtp), and had no real difference in either. I don't have any pics either since I don't have one on my car right now, but it'll look pretty much like any of the other kits out there. This isn't really a mounting how to, but a build plan for anyone to make their own for any car. I will help with any mounting questions I can answer though.
blueta is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Alcohol/Water?Methanol Injection Q&A... ultimate cc Performance Modifications 58 04-10-2009 12:04 PM
Alcohol Injection Nozzle size calculator Devilsown Performance Modifications 0 09-28-2006 06:41 PM
2.0 direct injection jonsstockrocket General Discussion 4 07-03-2006 01:52 PM
Methanol injection (SS) with a SS Performance Modifications 0 09-01-2005 06:45 PM

» Recent Discussions
FS(10Pieces) MacBook Pro...
Today 10:15 AM
Last post by laqbnfgsyue
Today 10:15 AM
0 Replies, 13 Views
FS(5Pieces) MacBook Pro...
11-08-2019 12:27 AM
Last post by laqbnfgsyue
11-08-2019 12:27 AM
0 Replies, 18 Views
Buy (50Pieces) Apple...
11-05-2019 12:10 AM
Last post by laqbnfgsyue
11-05-2019 12:10 AM
0 Replies, 20 Views
New here
11-02-2019 11:54 PM
Last post by Justin Detwiler
11-02-2019 11:54 PM
0 Replies, 19 Views
Buy (30Pieces) Apple...
10-30-2019 09:16 PM
Last post by laqbnfgsyue
10-30-2019 09:16 PM
0 Replies, 47 Views
Buy (20Pieces) Apple...
10-28-2019 01:32 AM
Last post by laqbnfgsyue
10-28-2019 01:32 AM
0 Replies, 41 Views
Buy (10Pieces) Apple...
10-24-2019 09:13 PM
Last post by laqbnfgsyue
10-24-2019 09:13 PM
0 Replies, 41 Views
Buy (10Pieces) Apple...
10-22-2019 08:35 PM
Last post by laqbnfgsyue
10-22-2019 08:35 PM
0 Replies, 47 Views
victory_red_SS RWD...
11-25-2007 12:35 PM
Last post by victory_red_SS
10-22-2019 04:52 PM
166 Replies, 48,538 Views
Buy (5Pieces) Apple...
10-20-2019 07:47 AM
Last post by laqbnfgsyue
10-20-2019 07:47 AM
0 Replies, 37 Views
Powered by vBadvanced CMPS v3.2.3

All times are GMT -6. The time now is 11:14 PM.

Powered by vBulletin®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
© AutoGuide