I'm looking into Propane Injection for gas 12.4:1 LS/VTEC it would raise the gas oct level to 117 or 110 right? I'm just trying to find out if it's something that would help my setup out or it's only for like diesel setups

 

Propane Injection is for turbo cars only as far as I know... Propane is injected only when it is needed ( read: boost!)...the rest of the time the propane injection is turned off. On an all-motor setup you would have to run propane all the time as the strain of compression is constant, not only when in boost...

I wonder if you could run less propane all the time, and perhaps just increase octane to 105 equivalent so I could run 13.5:1 daily...that would be great...

Regardless you do NOT need propane to run 12.4:1.

If you want to increase octane with less headaches, look into using Xylene or Toulene as a gasoline addidive that will increase your effective octane ratio but up to 15%..you can buy this stuff at paint stores, and chemical warehouses, and it's relatively cheap too!

 

ive only heard for propane shooting for diesel trucks. i might jus not know any better tho..

 

propane is actually used to cool down air as well in the cylinders but is most effective when used on engines that have diesel-like compression and high boost... 12:1 is too low to use it effectively, maybe 14:1 and you will see minor gains...

 

I believe u can use propane injection with nitrous also.

 

I didn't know propane did anything more than raise octane level. Sure it cools stuff down?? I was reading some guy only spending $10 a month on propane bills running on his DSM. I think that's alot cheaper than additives

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FastAssEG &raquo;</TD></TR><TR><TD CLASS="quote">I believe u can use propane injection with nitrous also.</TD></TR></TABLE>
you are correct sir!!! propane can be used to raise octane level and reduce detonation when spraying the **** outta something. i met a guy at the track one night spraying no2 AND propane in his viper.......9.5 was his highest run of the night. think he hi 9.10 at one point!!!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cletus &raquo;</TD></TR><TR><TD CLASS="quote">
you are correct sir!!! propane can be used to raise octane level and reduce detonation when spraying the **** outta something. i met a guy at the track one night spraying no2 AND propane in his viper.......9.5 was his highest run of the night. think he hi 9.10 at one point!!!!</TD></TR></TABLE>

I am considering doing this for my high compression nos setup, but it is not currently in my motor build budget. I am gonna spray 100 shot and if I get it I want to do around 150 shot or higher. Hopefully I don't blow up without it.

 

How does propane injection work? Any links would be great.

 

There are several threads on propane injection, search.
-PHiZ

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MaxBoost &raquo;</TD></TR><TR><TD CLASS="quote">Propane Injection is for turbo cars only as far as I know... Propane is injected only when it is needed ( read: boost!)...the rest of the time the propane injection is turned off. On an all-motor setup you would have to run propane all the time as the strain of compression is constant, not only when in boost...

I wonder if you could run less propane all the time, and perhaps just increase octane to 105 equivalent so I could run 13.5:1 daily...that would be great...

Regardless you do NOT need propane to run 12.4:1.

If you want to increase octane with less headaches, look into using Xylene or Toulene as a gasoline addidive that will increase your effective octane ratio but up to 15%..you can buy this stuff at paint stores, and chemical warehouses, and it's relatively cheap too!</TD></TR></TABLE>

Actually propane injection can be used on High comp motors. Propane injection raises your octane level to about 110-110 depending on your pump gas ocatne. You would have to use a window switch or an RPM activated switch to activate the propane but it can be done and I know some people who use it. You might want to look into water injection also. It might also help you out.

Chris R

 

If the propane leak out, it could be dangerous. And does race tracks allow propane? I think you should just run a small amount of water/alcohol mix, that way you get clean cylinders, and a little octane boost (from the alcohol).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MugenAccordSE &raquo;</TD></TR><TR><TD CLASS="quote">If the propane leak out, it could be dangerous. And does race tracks allow propane? I think you should just run a small amount of water/alcohol mix, that way you get clean cylinders, and a little octane boost (from the alcohol).</TD></TR></TABLE>

If gasoline leaks its just as dangerous

 

Yes, but when you inject propane it's infront of the TB, so it has a greater chance of leaking. I'm just say water/alcohol injection is a better (safer) idea.

 

Would any of you guys be interested in a cheap but quality octane booster for trackdays to run at like 100-105RON
?

I'm thinking of buying a hundred and selling them off on my company website im building still.
1 Can of Silkolene (Silkolene racing lubricants now owned by Fuchs) will increase octane by around 4 RON aand give much better throttle response.

I should be able to get them cheap in a batch, I have to buy them all the time anyway so if i bought a load it would be cheap and great for trackdays

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by OTT &raquo;</TD></TR><TR><TD CLASS="quote">Would any of you guys be interested in a cheap but quality octane booster for trackdays to run at like 100-105RON
?

I'm thinking of buying a hundred and selling them off on my company website im building still.
1 Can of Silkolene (Silkolene racing lubricants now owned by Fuchs) will increase octane by around 4 RON aand give much better throttle response.

I should be able to get them cheap in a batch, I have to buy them all the time anyway so if i bought a load it would be cheap and great for trackdays</TD></TR></TABLE>

we need more info do you have a link to the product?
Chris R

oh and nice HIjack

 

i would like to know also^

 

Hook us up man, I might need one

 

Hrmmm...interesting.... so running propane would permit more aggressive timing when your high CR ?

If so, I believe where I am, we have supportive funding to convert your car to run on LNG/CNG... would that mean I could run LNG/CNG and bump my timing significantly ? (I would be running it 24/7, btw)

X2 (Thread-jacker)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by X2BOARD &raquo;</TD></TR><TR><TD CLASS="quote">Hrmmm...interesting.... so running propane would permit more aggressive timing when your high CR ?

If so, I believe where I am, we have supportive funding to convert your car to run on LNG/CNG... would that mean I could run LNG/CNG and bump my timing significantly ? (I would be running it 24/7, btw)

X2 (Thread-jacker)</TD></TR></TABLE>

Yes propane will allow you to run a more aggresive timing curve with a high Comp NA car. You will have to use a very small amount of propane but it can be done. It will be very important to datalog the car if you can or get it tuned on the dyno.

Chris

 

What the propane does as well is spread to the areas in the combustion chamber where the fuel/air mix is lower thus promoting more even combustion.

 

Propane is a very cool fuel. I know of some very very fast propane+boost cars. They used to be gas engines, but they had propane forklift carbs thrown on them. Propane has an advantage of exellent atmozation, this helps it keep knock down, and make more power.

Propane =

 

Lately I have been testing an oxygenated race gas but its expensive depending on which grade...one is rated to 114 octane and the other says 120plus so its prob higher
you also need to run almost alcohol like levels of fuel...
tough to tune but when you get it right
its really right
gotta love the V8 circle track guys I deal with

 

Propane will probably not work well (as far as a power booster) on a n/a setup because it displaces air (your oxygen) in the combustion chamber. In a turbo or nitrous setup this is not important because you are chemically or mechanically forcing more oxygen into the engine anyway.

Propane does not have a noticable effect on combustion temperature because it is injected as a vapor, not a liquid like n2o is. Also the pressure is much lower (100-150psi vs. 800-1000psi), and you will inject less of it as it is a fuel (remember engines like @@1:13 fuel:air).

You may be able to run higher compression and/or more timing to compensate for the loss of the oxygen. This may or may not get you right back to where you started from, with gasoline- as far as horsepower goes.

I'm not saying you cannot run propane on an n/a setup. It is done all the time on non-race engines, in non-US countries just to save money. In some countries regular gas costs more than race gas costs in the US. The converted cars may lose 5-15% of their power after converting, but they save tons of money so the trade off is worth it. Many forklifts use propane for fuel, and their parts are use sometimes in converting cars over. If you google you will find lots of neat info.

The viper that was mentioned previously was probably running a commercially available 'kit' as there are a few out there. Mostly for domestic cars.

All this crap I've just spewed is from my own research. I'm just posting to try to share some info. If anything needs to be corrected, go for it yo.

 

ill be doing a propane/nitrous set up in my vr6 soon.we are scheduling a dyno day to do the testing.

as of now,im using a 75 shot....dry.i will be addinga propane tank/line/fuel solinoid and fogger nozzle to the setup and starting with a small jet till i get it up where id like the mixture.