DIY Alcohol Injection. Impressions?

[BuickMike]

Since I have a baby on the way I am un a tight budget and really do not have the $$$ to fork out for a top of the line alky kit. I'm also not going to push more than 22psi with my current combo.

Considering this, would building a DIY system (from Steve Monro's article) be a good way to get started with alky injection? I could always add a progressive controller later, right?

Thanks in advance for any replies.

 

[turbot2112]

well from what red says and a lot of other people say you cant go wrong for the money. probably the biggest expense is the pump and its a moster.if i was going to do it over id get that .

 

[salvageV6]

No downsides to DIY if you can turn a wrench and install stuff on your car.

22 psi. should be easy to achieve.

You can set the whole system up on a bench if you have a spare battery available for testing and some regulated air available for "boost".

 

[BuickMike]

I'll have no problems with the installation.

Quick question, what is the major advantage to using a progressive controller?

 

[turbot2112]

smooth, and not as much transitional knock. set it and pretty much forget about it. if you have the alky set to kick on at low boost like 5 pounds and say your passing someone on the highway you will bog with out a progressive kit cause you will be dumping to much alky.also, do a search, lots of info.

 

[Razor]

You dont necessarily have to follow SteveM's wiring instructions. And the nozzle doesnt have to be the NOS style either. I've helped quite a few do basic kits that use a pressure switch, and relay to drive the pump. You can tune the pump in via its pressure screw. Thats the majic of DIY.

I dont stock or sell hobbs switches. That you'll have to source out.

Anything I can help with.. be here.

Julio

 

[BuickMike]

More questions...

Thanks for all the good info folks! I really apreciate it.

I have some new questions now.

Am I correct is saying that Steve Monroe's DIY system is only good with moderate timing like in a street chip since it doesn't come on until 15psi?

Julio, would I want to use stainless steel plumbing nozzles instead of Nitrous nozzles?

For more agressive timing, could I make a dual nozzle setup with the pump wired to a hobbs switch at 5psi and another nozzle going through a solenoid at 15psi? (Maybe I should hold out for a PAC)

 

[Razor]

Mike, many ways to skin a cat.

The nozzle is actually brass and stainless. And the pressure switch you can adjust to come-on at any desired pressure. Typically around the 8-12 PSI range. If it comes on at 15 PSI.. your going to see a lot of knock.

There are some guys running multi-stage setups. They say they have great results. I just like keeping things simple. The less bells and whistles, the more back and forth getting it figured out.

hth

 

[salvageV6]

I use a staged system, easy to get nozzles from McMaster-Carr, all they are is misting nozzles.

Search feature here will yield the part numbers.

I turn them on at 10, 18 and 24 psi. Run about 27 psi. boost with 23* timing in gears 1+2 and 21* timing in 3rd and 4th.

DIY means experimentation, depends on the cars setup such as heads and cam and turbo etc. as to how much alky. you need.

Mines all stock with heads and cam, needs boost to run good.

Lots of ways to do things.

 

[BuickMike]

SalvageV6, what size nozzles are you running?

 

[salvageV6]

One M10 and two M15 nozzles staged.

About 70-80 psi. pressure from SMC kit type pumps.

Shurflo pump is higher output pressure so fewer nozzles are needed.

Car number 2 my GN runs two nozzles an M10 and a M15 staged to turn on at 22psi. Simpler setup and easy to do.