View Full Version : HHO on a carbureted engine
humbug
07-25-2008, 05:50 PM
What do I have to do to a carbureted engine so that I can benefit from HHO?
Like the air to fuel mixture, do I have to adjust it or will it self adjust?
Which vacuum line?
Painless
07-25-2008, 06:00 PM
I would think that with a carburetor engine you would have, by far, the easiest job of all of us. The fuel/air ratio is set by the size of the jets, so you won't need to adjust for the computer playing with the mixture. From what I've read, you may need to adjust the ignition timing.
humbug
07-25-2008, 06:35 PM
that sound complicated? where do i start?
Stratous
07-25-2008, 06:56 PM
To be safe, you need to be able to monitor your exaust gas temperature. When you start decreasing the amount of fuel, your engine will run hot, but the addition of hydrogen will offset that effect. So basically, you need to lean your fuel down probably by 10% or so, then add Hydrogen and measure the EGT. If its still safe, then you can attempt to lean the fuel a little more. and so on. You need to know how to put smaller jets on your carb and know the safe parameters on your engine. I am sure someone else in these boards has better more detailed information than I do.
mario brito
07-25-2008, 08:26 PM
just don't forget one detail : if you are running too lean, because your HHO is balacing that, and your HHO unit stops working for some reason, and you keep your engine running, you can destroy your engine ! so, keep it in safe levels ! :)
humbug
07-25-2008, 08:47 PM
good point, i just want to know what screw to turn what spring to pull
cougar gt-e
07-25-2008, 09:01 PM
There are about 358 different carburator designs. What car, engine, carburator?
The only thing you can easily adjust is the idle fuel. Normally tightening the screws 1/8 to 1/4 turn will help with the idle air fuel. The main fuel system is controlled by a jet (exactly sized hole in a brass screw) and some have rods that go thru the hole. Then there is the transition circuit to enrich the air when you are slightly accellerating. Some have extra venturies that are used for full power. Your best bet is to get a manual. Some carbs are easy, some moderately hard and some are pure distilled evil.
humbug
07-25-2008, 09:20 PM
thanks ill look at a manual but i think ill probably just go to a mechanic :)
by the way its a 1982 chevy c20 v8 5.7 liitre
Stratous
07-25-2008, 09:45 PM
thanks ill look at a manual but i think ill probably just go to a mechanic :)
by the way its a 1982 chevy c20 v8 5.7 liitre
It either a quadra junk or holly, unless an aftermarket was installed.
thanks ill look at a manual but i think ill probably just go to a mechanic :)
by the way its a 1982 chevy c20 v8 5.7 liitre
still have the Q-jet on it ??? thats what i need to try
Stratous
07-25-2008, 11:31 PM
still have the Q-jet on it ??? thats what i need to try
Its been several years, but alot of the 70's and 80's had holly and q-jet. My ole 80 elcamino had a q-jet. Hated that thing, rebuilt the engine in 1996 and had it bored and stroked to a 393. I put an edelbrock 750 on it and took it to the track a few times. Could never get below 13.5 in the quarter. Wish I still had that car/truck...lol
Its been several years, but alot of the 70's and 80's had holly and q-jet. My ole 80 elcamino had a q-jet. Hated that thing, rebuilt the engine in 1996 and had it bored and stroked to a 393. I put an edelbrock 750 on it and took it to the track a few times. Could never get below 13.5 in the quarter. Wish I still had that car/truck...lol
a Good Q-jet is very hard to beat