|
Re: Going to alky.....how much difference?
[Re: 408strokerdart]
#879755
12/14/10 12:44 PM
12/14/10 12:44 PM
|
Joined: Feb 2004
Posts: 2,073
Tulsa, Ok
WadeMetzinger
top fuel
|
top fuel
Joined: Feb 2004
Posts: 2,073
Tulsa, Ok
|
From what I've seen, alcohol can pick you up between 2 and 4 tenths. It seems to pick up lower compression motors up more than higher. So if your at 11:1 and go alcohol, I would expect 4 tenths, if your at 13:1, I would expect 2 tenths. (in 1/4 mile)
Injection is worth some on it's own, so I would look for somewhere around 2 tenths in the 1/4 with injection.
Everyone see different results, this is just what I've seen over the years and with my experience.
Wade Metzinger 918-809-0987 71 Cuda 9.28@145 -1s, Pglide 68 Cuda 10.64@124 1.45 60's 318->390 eddys Moparts discount code on WIX - moparts www.Filter1.com
|
|
|
Re: Going to alky.....how much difference?
[Re: DavidDean]
#879757
12/14/10 01:42 PM
12/14/10 01:42 PM
|
Joined: Feb 2003
Posts: 3,456
Out West
408strokerdart
OP
master
|
OP
master
Joined: Feb 2003
Posts: 3,456
Out West
|
Quote:
I've changed to methanol(pro systems SV-1) picked up close to 2 tenths 12.5:1 CR.The only draw backs are hard starting in cold weather and a little more fuel system maintenance.I can purchase methanol locally for about $150.00/drum.So far I really like it.
.2 in the 1/8th mile or 1/4?
|
|
|
Re: Going to alky.....how much difference?
[Re: 408strokerdart]
#879758
12/14/10 02:23 PM
12/14/10 02:23 PM
|
Joined: Jan 2003
Posts: 16,924
NC
440Jim
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 16,924
NC
|
I only have limited experience, so FWIW my opinion. Typically in hot weather you can see 0.3 tenths in the 1/4 mile, so maybe .2 in the 1/8th mile. The torque improvement can show more improvement in the 1st half of the track. In cold weather, the ET difference will be less. And in mineshaft air it might be too close to call. But people have reported different results in different combos. I also am a firm believer that alcohol can make a car more consistant from less change with weather changes. But some gas combos are very consistant too. If you go alcohol injection, give serious thought to a gas primer/idle system. This helps put/keep heat in the motor, easier cool weather starting, saves fuel, etc. Recommended, but not required ! 
|
|
|
Re: Going to alky.....how much difference?
[Re: 408strokerdart]
#879764
12/14/10 05:12 PM
12/14/10 05:12 PM
|
Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
|
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
|
Quote:
and also need to know what to do with all of this compression if I make the switch.
? What do you mean?
|
|
|
Re: Going to alky.....how much difference?
[Re: 440Jim]
#879765
12/14/10 05:21 PM
12/14/10 05:21 PM
|
Joined: Jan 2003
Posts: 5,406
Diego-Town, CA
Diego_Ted
master
|
master
Joined: Jan 2003
Posts: 5,406
Diego-Town, CA
|
Quote:
I only have limited experience, so FWIW my opinion.
Typically in hot weather you can see 0.3 tenths in the 1/4 mile, so maybe .2 in the 1/8th mile. The torque improvement can show more improvement in the 1st half of the track.
In cold weather, the ET difference will be less. And in mineshaft air it might be too close to call. But people have reported different results in different combos.
I also am a firm believer that alcohol can make a car more consistant from less change with weather changes. But some gas combos are very consistant too.
If you go alcohol injection, give serious thought to a gas primer/idle system. This helps put/keep heat in the motor, easier cool weather starting, saves fuel, etc. Recommended, but not required !
 and A+ for the primer plus gas system. It sure makes my life better. I'm with Ryan J. What do you mean? Alky loves compression.
Diego
|
|
|
Re: Going to alky.....how much difference?
[Re: RyanJ]
#879768
12/14/10 06:35 PM
12/14/10 06:35 PM
|
Joined: Feb 2003
Posts: 3,456
Out West
408strokerdart
OP
master
|
OP
master
Joined: Feb 2003
Posts: 3,456
Out West
|
Quote:
Quote:
and also need to know what to do with all of this compression if I make the switch.
? What do you mean?
Just thought I was on the high side for going alky? 
|
|
|
Re: Going to alky.....how much difference?
[Re: 408strokerdart]
#879769
12/14/10 06:47 PM
12/14/10 06:47 PM
|
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
|
top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
|
I have always heard alcohol runs better with a higher CR. You can also run VP M5 if regular alcohol is not enought. We just bumped the CR ratio up from 14.2-1 to 15.2-1 because I changed over to alcohol.
Last edited by MRMOPAR570; 12/14/10 06:51 PM.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
|
|
|
Re: Going to alky.....how much difference?
[Re: DavidDean]
#879772
12/14/10 07:57 PM
12/14/10 07:57 PM
|
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
MRMOPAR622
top fuel
|
top fuel
Joined: Sep 2003
Posts: 2,008
Sweet Home Alabama
|
If you go with a Ron's the throttle response is unreal.Also I can do a hard burn-out(dragster)jam on the brakes back it up & stage,never have to clean it out. Your days of over heating issues will be a thing of the past. At the 1st of the season I brought 3 drums 162 gallons of 99.9% alcohol for $314.76 with tax. That's a little more info. to help you deceide  PS have not run mine a lot,but every oil change the oil has been clear.
"To Be The Man'You Have Got To Beat The Man"
"T/D and Pro-Bracket Racer"
|
|
|
Re: Going to alky.....how much difference?
[Re: 408strokerdart]
#879773
12/14/10 08:36 PM
12/14/10 08:36 PM
|
Joined: Jan 2003
Posts: 8,547
State College, PA
RyanJ
moparts member
|
moparts member
Joined: Jan 2003
Posts: 8,547
State College, PA
|
Quote:
Quote:
Quote:
and also need to know what to do with all of this compression if I make the switch.
? What do you mean?
Just thought I was on the high side for going alky?
It's a high static #, but with wide LSA & alot of duration, I'm sure the cranking pressure & dynamic is'nt that radical.
Methanol is unusual stuff from my limited research on it, it has a really high RON # like in the low 130's, but a low MON # in low 100's. I just know alot of turbo cars especially 4 cyl stuff with really high boost (30+) are going to it. & if it lives in those apps, it will be more than fine in yours.
I'd start out on cheap M1 VP & then try their new M5 stuff... I talked to one guy @ track last fall who was running the M5 in his BB GM Dragster & was real happy with it. I've never tried it, but if I was running meth I certainly would. I'm injecting M1 into my turbo motor, M5 is not recommended for pre-compressor due to it's increased volitility...
|
|
|
|
|
