alky or propane?

[UnderdogGN]

I know this should be in the alky section, but i want to know which is better for hotair's. Which one has worked better for you?

 

[TType84]

the reasons i like propane:
propane comes out of the nozzle at -60dF, a very nice intercooling effect
1 tank fill = $3.00
1 tank fill = 2-3 weeks
propane is 110 octane

 

[UnderdogGN]

thanks... i was planning on propane anyway, but i wanted to make sure it was good for a hotair.

 

[boostmaster]

Alky or Propane!!

The reason I like Alky.
1. Has just as good a cooling effect and octane as propane.
2. I don't have to worry about being detained by the homeland security police for having a bomb in my trunk.

 

[turbobooster]

how do u get propane in our cars ? does someone sell a setup kit for propane or something this is all new news to me someone wanna update me to how this is done and how much $$$?

 

[Jerryl]

Great thread.
Hear from the experts.


http://www.t6p.com/forums/showthread.php?t=4163&highlight=propane

 

[BRAD_PADGETT]

I have really enjoyed this thread. I agree that a propane tank on a car is a bomb unless you have one disigned for automobile use. My goal for the decision for alky or propane is six steps away which will be a methodical approach of my goal of a 13.0 car. Thanks- Brad

 

[TType84]

the propane tank is a bomb?

dude you run around with SIXTEEN GALLONS OF GASOLINE RIGHT UNDER YOUR TRUNK



if you get in a wreck severe enough to crack open a propane bottle, you are ALREADY DEAD.

 

[BRAD_PADGETT]

I will say again that I really have enjoyed this thread alot. My only point about propane tanks is that you use one that is designed for automobile use. The gas grill tanks will become a bomb on an automobile in an accident. The tank is not designed for impact. Why do they tell you to store gas grill propane tank outside? Why do they build new house garages with a gas stop? Propane is heavier than air an collects close to the ground and can ignite and blow up. Just my two cents. Brad

 

[boostmaster]

Propane!!

To each his own, It was just a joke. Just trying to have a little fun with this thread. Both have there strong points, I just stated my personal opinion. TType 84 you've had your propane kit for over a year now and those "easy 12's" haven't come yet. While many other hot airs have been there with alky already.

 

[Turbo T/A 1543]

I know this is a hot air conversation, but having done propane for a while and then switching to alky...I'll never look back. Maybe I didn't spend enough time "tuning" on my '86 to truly give it a fair shake, but in comparison there pretty much isn't one. My major problem with the propane was bottle pressure drop with temperature. When it got cool outside the bottle pressure dropped pretty quickly and you really can't "see" how much is in the bottle. The alcohol doesn't care if it's hot or cold out...it just works. The boost levels on alcohol are higher on my car and it's consistent. With a progressive controller alcohol is progressive - propane isn't. Another thing to think about is the amount of general discussion between alcohol & propane - alcohol has vendors standing in line to make better products constantly - propane doesn't appear to any longer. Like I said, just my comparison between the two. If you are interested, I'd sell my like new propane kit for $350 + shipping with two bottles (didn't want to wait for fillups - second bottle was purchased new also). Honestly, I'd probably have gotten nearly as much entertainment lighting the $650+ on fire one dollar at a time . Good Luck!

 

[UnderdogGN]

Its not really an issue but i heard that alky sometimes boggs the engine??? Anyway, im looking to run between 18-20 #'s (maxing out stock turbo.) Can propane get me there?

 

[Jerryl]

Originally posted by BRAD_PADGETT
............ My only point about propane tanks is that you use one that is designed for automobile use.

Brad,
To your point.
This is where you get into DOT approved cylinders.

I am sure std cylinders are fine to a point. DOT cylinders are manufactured under different design criteria resulting from more stringent regulatory compliance requirements.

 

[Dwayne]

alky......hands down

 

[6SENSE]

Originally posted by UnderdogGN
Its not really an issue but i heard that alky sometimes boggs the engine??? ...

Only if you have it come on too early and/or too much (tuning issue), and thats only a possibility if you dont have a progressive system. When Razor stepped to the plate and brought the idea of progressive injection that the rest of us were only talking about to reality the alky/h20 injection world LEAPED ahead. Now only smooth operation like it was meant to come with the car. There is no limit with it.
Progressive alky even saved the engine in my brothers '87 T-LTD from massive breakage when his tranny blew up, vac lines popped off and boost shot up probably over 30psi. You could see the alky drown the motor by the black (rich) smoke exiting his tail pipes as he went down the track. No damage whatsoever to the motor after checking things out later.

I have no experience with propain, so just my 2cents about alky/h2o injection which has more than proven its effectiveness in various apps for about 60+ years now?

 

[Mike70gtx]

If you go alky, find someone who is having success with it on a hot air. I did not work for me on my 84 but works great on the 87. I had the nozzle below the turbo in the adapter. I pretty sure Lee has two nozzles in the intake which is a lot better.

 

[UnderdogGN]

so your saying that its better to spray it in the intake pipe before the throttle body?

 

[buickpower]

No, he means that some people have drilled actual holes in the intake manifold, at the rear where it begins to slope down, check out the thompson intake thread in this forum for pics of what i mean.

 

[UnderdogGN]

thanks, thats what i thought. It wouldnt make sense for it to run better with the nozzles farther away from the intake manifold.

 

[UnderdogGN]

So, to do a propain injection the turbo has to come off so you can drill your hole correct? How much worse (performance wise) is it to put the nozzle in the inlet pipe by the t-body than in the turbo?