Wow, thats a great improvement doc. Keep us posted with future mods too.

 

What newbies.

The point of using acetone is that acetone is infinitely miscible with water and lipids.

This means, in theory, you can mix water in your gasoline and not have it fall out of solution.

I do not know the numbers as far as how much/etc. Surely these can be found, or determined via simple experimentation.

 

The results are in for my Acetone testing on the truck.
The 1st initial try was a short hop via freeway and back(50 miles).Then some in town driving some more stop and go and then another short trip.
Overall on that test I got 11MPG. I had used the 3 OZ per 10 gallon.
I figured this was going to be bad since that was unloaded.
Since I was towing the 7 and had the car filled and the bed of the truck filled. I estimated that I would be adding approx 3300 LBS of weight to the equation.

Being that I was driving 700 miles this was going to hurt.
11 MPG is what I got once towing a 7 140 miles one way. That was a empty vehicle and nothing in my truck either.

The second stop I checked my mileage and I was up to 13MPG. Average speed of approx 60 MPH.

The third stop my mileage was 15 MPG. This was with adding only 2 OZ per 10 gallons of fuel.

My best regular mileage in the truck unloaded was 15.5 and dipped down to 12 in city driving.
The next run included all the climbing going up Interstate 5 and thru Shasta. This was with taking it out of overdrive most of the time and with the A/C on. Alot of the times my foot was past 1/2 throttle to full. When I filled up after 210 miles since the last time the mileage was 15.

The last check was from Klamath falls to here and with Oregon fuel. Even with the climbing from there to here and my foot into it alot of the times, I managed to get a full 16 MPG.
Now the best I have ever pulled out of the truck was 17MPG. And that was empty.
So I would have to say that it works. Because my average towing mileage of vehicles before this was around 10MPG.
Now I am going to run thru this tank, record the mileage then not add anymore and see where the mileage goes. Then I will again add the Acetone and recheck.
I can go to sleep tonight with the knowledge that I spent almost $100.00 less on fuel because of the improved mileage.
Next will be the testing of the RX-7 with Oregon fuel and the higher altitude. Then I will add the Acetone and see what happens from there.
For the $8.00 that I spent on the 32 OZ of pure Acetone, I believe I got more than my moneys worth. I still have enough left over for retesting in the truck and testing of the 7.

 

Just an update on mileage with the truck and the acetone.
My last long trip from home out 58 and to Eugene and back. It consisted of stop and go driving while site seeing. All of the climbing up and down highway 58 which is alot.
I pulled a full 20MPG.
Have not continued with the 7 yet as I have just recently had it registered in Oregon and want to check the mileage without the acetone first.

 

I always liked the idea:

They say acetone allows for much better atomization of the gas which is great for the carb systems. Somewhere about 6 months to 9 months ago I did a search and only came up with a thumbs down report for this working. I just did a new search now and could not find the thread but found other positive reporting threads.

Any body care to comment nonsarcastically on an internet search where I found one guy who heats ( Yea..... H E A T S ) his gas up to about 180 deg F with heat from his coolant and claims great gas mileage improvements My interpretation is that at the moment this 180 deg F or so fuel mixes with air it will atomize better. Then afterwards it cools down too from the incoming air.

I wonder what the gas temp normally is in the float bowl anyway with a hot exhaust manifold underneath.

Doesn’t this whole thread then start to sound like we would be better off with fuel injectors for the 12a in regards to mileage improvements as the purpose of the acetone to to better atomize the fuel into the air.

Anybody care to come up with an idea on converting 12a irons to accept fuel injectors. Then raid a donor for throttle body and various sensors and add management with say a megasquirt then add acetone then heat the fuel. I wonder what the results would be? I know Japan soil had a 12a fuel injected, I don’t know if it also had a turbo. It put out about 140 hp. I wanted to advance these ideas here for the purpose of attempts to create conditions for a better more complete and earlier advancing flame front in the combustion cycle. There is a lot of work that can be done here, not only for better gas mileage but also it is realistic to look for improvements in the power band too.

With the ideas of the last two paragraphs a bit off topic for this thread I will take this part to a new thread for the sake of not wanting to hijack.

 

i have to go on a road trip tomorrow. im guessing ill break 30 MPG in the GSL

 

Post up the results.
I am shooting for 32MPG on the SE.

 

i got 27 with the GSL with the wrong intake manifold gasket and no acetone. we will see the results tomorrow

 

I got a best of 27.1 while still in Ca without the Acetone. That's why I optimistic about hitting over 30MPG in oregon with the higher altitude and then using the acetone. :-)

 

Curiously, I just got exactly 27.103 MPG on a round trip to Seattle and back this weekend in my 85 GSL-SE. 360.5 miles on 13.301 gallons. That was a bit better than the 24-25 MPG I usually get on the trip. All windows-down driving, for those who think Mythbusters is more than just entertainment. I did spend about an hour in stop-and-go rush hour driving on the trip up there (damn you Tacoma!) and perhaps 15 minutes of it on the way back, through Seattle. No semi-drafting or any other tricks. No A/C and no CC.

I think one of the reasons you may see better mileage up here, comparred to Califonia is that we don't have oxygenated gas in the summer months. Just a possibility. I have not noticed any difference in mileage myself, between the two states. Or it could just be that your driving reflects the drivers aound you, so you no longer drive 15+ MPH over the limit constantly. With 2nd gens at least, I have noticed a big reduction in fuel economy when exceeding 85 MPH, due to the car constantly running open-loop (no AFR feedback)...I don't speed as much in my GSL-SE, so I don't know if the ECU goes open-loop at some point, like the 2nd gens do.

 

i didnt get to go on the road trip this past weekend. ill have to do it soon though. so ill post stats as soon as i do.

 

The oxygenated fuel is supposed to be only in the winter months only in Ca. I had always seen a drop in fuel economy during winter months in Ca. I had theorized that because of the higher altitude here in Central Oregon, (4200ft) I was getting better mileage. The last posted mileage of 25.4 with mainly in town driving really shocked me. I was expecting maybe the 19MPG as a good gain over stop and go driving in Ca which was around the 16-17MPG range. I think I'll make an excuse to go to the nearest Casino tomorrow night and see what the Freeway mileage goes up to without the Acetone. Then I can make the same excuse the following night to go to the Casino with Acetone. :-)

 

i did a short freeway/mountain cruise in the SA, 25mpg.... car is 100% stock, even the points ignition. it usually gets about 19-20

 

it does go open loop, but its not really a set rpm, seems more like airflow meter angle vs rpm or something. it will stay in closed loop closer to 4000rpm than the fc, and go out of closed loop a lot sooner than the fc

 

i went on the trip today it was 136 miles. i only got 26 MPG. i was around 70-80 the majority of the time. i also had to do a good bit of driving in the gainesville city.

my car was acting weird, or maybe its just me. it felt weak down low. that would also be why my numbers were off. oh well. time to inspect everything, again.

 

PJ did 30mpg... i'm hoping to follow with mine

 

Hey Guys,

I'm in the middle of a trip to the east coast. So far I've put 2,000km (1,250mi) on the car and I still have another 700mi to get home.

I'm doing at least (in silly american measurements) "23.5mpg"

Since that number means nothing to me, I'm still doing about 10km/L, better in some places.

So I'm pretty happy with it. Though this is with a stock carb, intake and airbox. My Sterling, with the ported mani and the ISCRacing airbox would get substantially less, but be MUCH more powerful. The stock carb/mani/airbox has absolutely no "get up and go". I can't pass people on the highway without some serious downshifting, and even then it's slower than I'm used to with my Sterling.

I'll do an update with specific numbers when I get home, I have the feeling that it'll be higher than that, but even that I'm happy with. My Sunfire winter beater gets that for gas mileage.

Jon

 

I hear you. MPG and KM/L are both pretty meaningless to me. My preferred metric is Furlongs Per Quart (FPQ). Why? Because I get 54.2 FPQs; not a lame 27.1 MPG or even lamer 11.5 KM/L. When people hear I get 54.2 somethings per something, they are impressed yet not overly skeptical. Now, if I told them I got 216.8 somethings per something (Furlongs per Gallon), they might start asking awkward questions instead of reflecting on my personal effort to free us from foreign oil dependence and save the environment and other noble things that make me more attractive to women of the liberal variety and no less attractive to women who like fast sports cars.

 

Yes those quantitative conversions do make u look atractive.


but
adjusting the tps 2 turns can take you from 10 to 20mpg on a gslse lol

 

my GSL felt week and today i did a little testing apparently since ive been driving my car after getting it back together ive been running trailing only, no leaning. so i got 25 MPG without leading ignition. ill do more testing tomorrow.

 

Did a drive last night. Approx 100 miles straight then stopped for about an hour, drove back 93 miles and filled up. This was highway driving up 97 towards Klamath falls which climbs about 1000 ft from here to Chemult. Then goes down, then you have to climb back up to 5200 Ft. So it is up and down driving over a period of miles, not straight flat land.
Locked cruise control in at 55 MPH. Some short slow down periods of 35-45MPH when going thru the small towns.
193 miles, 6.59 Gal = 29.2 MPG. I am confident that on level highway driving that I will be a solid 30 MPG. When I use the Acetone I am hoping that it will be around the 32-33 MPG :-)

 

My last tank of mainly in town driving with alot of spirited shifting to the upper RPM range I figured that the mileage would drop substantially especially since the Se generally does not like the lower speeds.

The good thing about where I now live and I'm sure it has alot to do with it. Is that the speed limit between home and work is 45 MPH. There are only 2 stop signs in the 6 mile one way trip to work. I have the car in 5th gear when I reach 45 MPH and lock the cruise in.

Well with all the spirited driving I did on this last tank, Not high speed but higher RPM shifiting. I filled up at 354 miles with the fuel light on. I thought that I was just about out of fuel. I still had over 2 gallons left in the tank. I got 24.5 MPG. With a best of 29.1 MPG on the highway so far.

Now I am going to finally put the Acetone in and see where it goes. I figured if it could get my Full size Dodge truck with that 360 CID engine to 20 MPG on the highway that the Car results should be favorable.

 

Latest update on the Se.

Took a 160.5 mile one way trip. Drove at 55MPH with cruise locked on with only about 9-10 miles of that at 45 MPH.

Used total of 3 OZ of acetone. Have been using Acetone for the last 3 tanks and the mileage had started to come back up with the winter fuel.

Got 30.5 MPG. Trip included some hill climbing.
Return trip driving 170.3 miles with the first 12.5 miles in stop and go at the 35 MPH range. On the way back I locked the cruise in at 60 MPH. Had about 9.10 miles also at the 45 MPH range. Hit 29.6 MPG. Could of been at the 30 plus range but it's hard to tell when I instructed the guys to top off each one did it differently.

Not bad for a vehicle that came from the factory with a Estimated mileage of 24 for highway driving. :-)

 

I think the K&N helped my gas mileage, I get about 28 miles to the Canadian Gallon, RB header, no cat and a muffler off a Ford something or other, I just got my local muffler shop to make me up a system so I could ditch the PO's Mind Train exhaust system which was so noisy it drew a lot of unwanted attention.
Mike

 

I have got to get my RX-7 fuel-injected...that is some amazing stuff you're doing, doc! Thanks for the update!

Mario III