What happened to Propane

[Grumpy]

Yea.. You can put a ton in.

The whole propane tank thing, well, your gas tank would explode from impact before the propane tank exploded and by then you wouldnt be caring.

ya I had the tank over the rear end .. I guess if the gas tank exploded the propane explosion would be like a booster rocket blowing you up in the air

 

[Boostnitup]

I will be running the car at the track soon

We can assume if I can get my car into the low 12's... any of you other guys can get one into the 11's. :biggrin:

 

[Bill_Ritter]

Yea.. You can put a ton in.

The whole propane tank thing, well, your gas tank would explode from impact before the propane tank exploded and by then you wouldnt be caring.

Haha, you guys are worried about the 5lb tank that came with the kit. I made an upgrade so I wouldnt have to fill as often. I'm also able to maintain better consistency with bottle pressure under long WOT romps

Edit: Sorry, just noticed this thread was from a month ago

 

[DMan]

Propane isn't bad but because its a gas, it has to displace that same amount of air, which means less power. Dollar for dollar I think alky is still better. The effective octane rating of alky is very high.

 

[Boostnitup]

Interesting concept...

Perhaps this is why when you try to slam too much alchy into the cylinder "too soon" it falls on it's face? :biggrin:

Doesn't that alchy disipate into a gas form as well? :biggrin:

Propain works for me! No blown head-gaskets in over 2 years! :wink:

 

[DMan]

Perhaps this is why when you try to slam too much alchy into the cylinder "too soon" it falls on it's face? :biggrin:

Doesn't that alchy disipate into a gas form as well? :biggrin:

Propain works for me! No blown head-gaskets in over 2 years! :wink:

Hard to say. Some engineering studies out there show that droplets still make it into the cylinder. Once the valve closes and things get real hot, they evaporate in the process of removing heat. This is a factor in improving the effective octane rating. Propane is a gas from the get go.

I think there are many alky users without blown HGs...its not unique to propane, plus you're *ONLY* running 23 psi need to get that up to 28-30 like the alky brothers

 

[Grumpy]

Haha, you guys are worried about the 5lb tank that came with the kit. I made an upgrade so I wouldnt have to fill as often. I'm also able to maintain better consistency with bottle pressure under long WOT romps

Edit: Sorry, just noticed this thread was from a month ago

threads never allways die SOOO have you raced the car with your combo ???? I see a few guys still using it BUT no times at the track for the "proven" performance. BUTT dyno's don't count

 

[Boostnitup]

03 July 2009 Pueblo, Colorado Pueblo Motorsports Park Friday Night "Cheap Night"

I will be at the track. Let's get some Colorado guys to show up! :biggrin:

The GN is running exceptionally well after latest mods; fixed the leaking exhaust (this was a biggie), fixed the timing chain cover oil leak... a dreaded "drip drip drip" that just wouldn't go away without pulling the front cover off and redoing it, 70MM throttle body/housing, Crank shaft "race pulley", full flow oil filter, revised upper radiator house w/160 thermostat and aftermarket thermostat housing, and readjusted the T&D 1.65 roller rockers.

The 60-1 turbo needs to be refreshened as it has an oil leak... but it should last a few outings to the track. It boosts the car up "just fine."

As for 23 lbs boost... on 91 Octane fuel that is "SAFE."

My ET numbers will be 7 tenths off whatever you guys on the East coast and sea level are running... and a few mph as well.

 

[bsdlinux]

after "playing" with both to me ALKY is way easier to work with and performance wise. We could run 20/21#s of boost with propane with no knock.. Same car with Alky 25+#'s of boost no knock.. Alky would kill the Propane kit . Difference of night and day BUT that was years ago. I don't hear much about propane anymore.

Propane worked well for me if I kept the timing the same in all gears. Also it seems it was alot easier to run the AF ratio rich with propane vs Alky. I would also run out of propane fairly quickly because I had such a small tank. The Alky worked well BUT.... E-85 has killed both the propane and alky for me. Changed over 2 years ago and never looked back.

Having said that, the propane kit is still installed and I have been thinking about running the E-85 with a lil propane now

Jay if you come up with something new let me know :biggrin:

 

[JayC]

Right now we're concentrating on getting the ISAC to market. Testing on that piece has been going great. The boost controller is top notch and the alky delivery is very easy to set up. Basically you set up your ramp curve and then have sliders to tweak it out. We made 530 at the wheels on alky and 93 with Shane's TFS car without really going nuts with the boost. We're going to build a downpipe for the car with an external gate and put the ISAC through its paces with a 2 solenoid boost controller.

 

[bsdlinux]

Right now we're concentrating on getting the ISAC to market. Testing on that piece has been going great. The boost controller is top notch and the alky delivery is very easy to set up. Basically you set up your ramp curve and then have sliders to tweak it out. We made 530 at the wheels on alky and 93 with Shane's TFS car without really going nuts with the boost. We're going to build a downpipe for the car with an external gate and put the ISAC through its paces with a 2 solenoid boost controller.

See a controller like that for propane would be awesome but you already know that. :biggrin: Keep us updated. THE ISAC sounds like a nice piece, good work.

 

[JayC]

Im fairly certain the ISAC would drive a propane setup fine with a software tweak.

 

[Bill_Ritter]

threads never allways die SOOO have you raced the car with your combo ???? I see a few guys still using it BUT no times at the track for the "proven" performance. BUTT dyno's don't count

I've only made 4 passes at the track with the propane setup, and that was about 5 years ago. The car ran 12.3x with a 1.8 60ft. That was on 93 octane/ RA93 chip/ Ta-49/ 009's/ 22lbs of boost (2 deg knock retard in 3rd)

I have since gotten a TT adj. timing chip and am running 26psi with no knock, but I have no desire to take it back to the track to see what difference it made.

 

[at7we2]

I know this is (was) an old thread, but I was just wondering about the "Pro-Pain" kits the other day then stumbled accross this thread tonight. FWIW, I'd be interested in an updated propane injection kit also.

 

[bison]

My ET numbers will be 7 tenths off whatever you guys on the East coast and sea level are running... and a few mph as well.

I disagree that you will lose a few mph and 7 tenths. I punched my 10.29@133.4 pass into a calc adding 5000 feet to the calculated altitude on my time slip for a total of about 5600 and got 9.98@137. So on my 670+hp application i only lost .3 and 3mph. To lose .7 id have to be about half way up Mt. Everest:biggrin: . You may lose as much as you say (or more) on a naturally aspirated application with the same power but not a heavily modded forced induction application. Here you go:
DA Calculator - Density Altitude Calculator - DragTimes.com
Pueblo altitude 4668 ft

 

[Boostnitup]

You will lose more than .7 tenths on a hot day at 105 degrees outside... and raining that afternoon. Each day and conditions is different in beautiful Colorado... and it is a challenge. Your handy dandy calculator doesn't mean zip nada in the real world of Colorado thin air.

Some of you tuning guru's will always find a way to compensate and make the best of it with your skills. Kudo's to you!

7 tenths is accepted here as a norm. If you are N/A (non turbo/non blower) you can expect to lose a solid second here. :biggrin:

 

[FlaBoy]

You will lose more than .7 tenths on a hot day at 105 degrees outside... and raining that afternoon. Each day and conditions is different in beautiful Colorado... and it is a challenge. Your handy dandy calculator doesn't mean zip nada in the real world of Colorado thin air.

Some of you tuning guru's will always find a way to compensate and make the best of it with your skills. Kudo's to you!

7 tenths is accepted here as a norm. If you are N/A (non turbo/non blower) you can expect to lose a solid second here. :biggrin:

As a former Cadet at the US Air Force Academy (in Colorado Springs) I used to get to the track quite often. When I became a 2 degree (junior) and myself and my classmates were allowed to have cars out there, those of us with fast ones understandably wanted to test em out up there. My car at the time ('67 skylark with a 455 and big port 430 heads) lost a little over a second compared to my sea-level times in florida (this of course was after dicking around with the jetting on the carb to get it right). My buddies 66 chevy II (nova) with a built 383 lost a little under a second, coming from nor-cal. Another friend from texas with a turbo supra lost about 6 tenths and another from boston with a turbo last-gen rx7 lost about 5 tenths. And in case anyone thinks im guessing at these numbers, I was secretary for the Car Club at USAFA at the time, and checked our old records on my computer to find these numbers.

so basically, from my personal experience, I'm saying that Boostinitup's estimation of 7/10 correction factor fits right in line with what I've seen from other cars running at that same track compared to running at near sea-level.

 

[Boostnitup]

One of the perks of the Air Force...

I got to race at tracks all over the country. :biggrin:

"Aim High!" ... the bullets have to fall somewhere in the enemy line. :biggrin: