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MY ALCOHOL INJECTION SYSTEM

My alcohol injection system was inspired by Steve Monroe's DIY system.  If you need details on the parts needed for the system I suggest you check out his website.  I decided to go to the extreme and try to hide the system components so only knowledgeable TR enthusiasts would notice anything out of the ordinary.  I think I have succeeded with this project as you can hardly detect that the system is there!  

The pump itself is hidden under the passenger side headlights, the pressure switch that activates the system is behind the A/C accumulator and the relay is located next to the alcohol reservoir which is a converted coolant overflow reservoir.  The nozzle for injecting the alcohol is located in the intercooler outlet neck.  I like this location better than mounting it in the up pipe and there is more metal to tap into.  I even hooked up a bulb in the dash with the existing POWER INJECTION  and WATER LEVEL lenses.  Not everyone knows those are there and I thought it would look pretty cool having the factory lights come on when using the system.  The water level light is hooked up to the float that was installed in the reservoir for the alcohol.  I used factory type dash light sockets in the holes that were already there and ground out some clearance so I could bend the tabs back.  I did this so the tabs wouldn't connect with the printed circuit on the back of the dash.  I then soldered wires to the tabs and ran the wires to the pump motor wire and the float.  A toggle switch in the ashtray plate can turn the system off if needed.

Initial testing saw boost levels of 20 lbs with stale 94 octane Sunoco gas.  I brought the GN from a stop up to 95 MPH with absolutely no knock retard on the couple of test runs I did.  I was getting plenty at the same settings before the alky kit was installed.  I will be adding to this page as time allows with the details of how I put the kit together.  Click on the pictures for a more detailed view.

The nozzle is attached to the outlet neck of the intercooler Another view view of the nozzle, I will be covering this with wire conduit to hide it even more! I ran the alky line inside the area in front of the radiator support and it is hidden from view. I also put it inside wire conduit.
This pic shows the coolant reservoir that has been converted to hold the alcohol. If you look closely you can also see the relay for the system! The new coolant overflow tank fits nicely between the battery and the radiator support Overall view of the motor. Where's the alky system?
This view shows how the pressure switch is not noticeable when looking in the motor compartment from the front I mounted the pressure switch behind the A/C accumulator, I have also covered these wires with conduit since these pics were taken Side view of motor
Overall motor pic The alcohol pump as seen from under the car. Another view of the pump, it bolts underneath the passenger side headlights
pumpmounting2.jpg (79025 bytes) Another pump pic I recently changed over to aluminum bumper supports and took the opportunity to take more pictures of the system while the bumper was off. This is a good shot of the check valve and the fuel filter I used.


UPDATE!

 I recently had the intercooler out of the car so I could install an aluminum crank pulley.  While moving the intercooler to the workbench to blow out the fins I heard a sloshing noise. Lo and behold I poured about a half cup of alcohol out of it!  Since my nozzle is located below the tank that holds the alcohol it apparently was slowly siphoning into the intercooler!  Needless to say I had to come up with a solution and quick.  I ended up buying an NOS alky solenoid and mounted it to the driver's side frame.  I then ran a 12" length of braided line up to the nozzle.  The solenoid is wired to the pump so whenever the pump comes on the solenoid opens.  The solenoid wasn't cheap at $112 from Jegs but it is rated for nitromethane and alcohol. Problem solved.  Below are the pics of the solenoid installation. I plan on covering the line with black plastic wire loom to hide the fact that there is more there then meets the eye.  To learn more about alcohol injection I suggest going to this website by Chad Schwartz. 

Alky solenoid from NOS Cost of solenoid was $112 from Jegs

KNOCK DETECTOR

This shows the gauge cup mounted in my Grand National on top of the dash pad

I am using the gauge cup for my knock detector

Another view, you can mount this cup just about anywhere!

I have wanted to add a knock detector gauge to supplement my Scanmaster ever since I put the alcohol injection system on my Grand National.  I already have a dual gauge pod on the windshield pillar and one on the console, too.  After much searching I have found some plastic gauge cups that do the trick perfectly.  It even perfectly matches the fuel pressure gauge cup that came with the fuel pressure gauge I have mounted on my hood.  I wanted to mount my knock gauge in my face so I could see immediately if I had a problem.  Running high boost with the alcohol system doesn't allow for mistakes if there is a system failure.  Now I have my gauge right where I want it.  I attached it with the supplied double sided tape to the top of the dash and it works fine.  If you loosen the instrument panel pad you can even sneak the wires behind it for a clean installation.  The Casper knock gauge is an interference fit into this cup with some special rubber ribbed bands that are included.  It also comes with screws if you want to permanently mount it. This cup is available from www.jcwhitney.com 

[ Home ] [ Up ] [ OUR GN'S HISTORY ] [ FEATURES ] [ MOTOR PAGE ] [ ENGINE & COMPUTER CONTROL ] [ THROTTLE BODY MODS ] [ COLD AIR INDUCTION SYSTEM ] [ MY ALCOHOL INJECTION SYSTEM ] [ INTERIOR ] [ OLDER PHOTOS ] [ WELD WHEEL PHOTO PAGE ] [ TORQUE THRUST WHEEL PICS ] [ MISCELLANEOUS MODIFICATIONS ] [ EXHAUST SYSTEM PAGE ] [ OUR 1966 PRO STREET CHEVELLE ]