quote:

Originally posted by Bucky:
Mine is only from experience and what I have witnessed. The vast majority of bracket engines I have seen go to alky go faster. Most pick up again going to injection.

It seems that the less refined a combo is, the more the gain. The more refined, or closer to using up the cylinder heads potential a combo is, the less alky is a benefit.

quote:

Originally posted by Strange Magic:
Gas is faster on all motors when the components are matched properly and everything is optimized. Just as an example: an engine with 13.8 to 14.1 is not considered optimized for gas, and would fall into the moderate category, and that is due to the fact, that if you increase the compression higher, it will make more torque and hp. Hence the words "optimized" as used below. When you classify an engine by (good, moderate or poor) for it's hp per cubic inch, the engines that fall into the "good" category will see losses from alky. The engines that fall into the moderate will typically wash, or have a slight loss when compared and the engines that fall into the "poor" category will make for power increases. It's why alky had become so popular, and it's popularity also was driven for those seeking a cheap method or alternate to race fuel.

Ambiant temps play a large part when it comes to hp losses on gas, and as the ambiant temps rise, raising the DA, the hp losses will show up on gas and yet alky doesn't see those losses because alky will reduce the combustion temps promoting hp during the higher temp days. It's why alky does so well in applications which produce heat naturally without ambient temps, such as a blown, supercharged or turbo application. The cooling affects promote power, and from it offsets the natural loss in an efficient "good" engine. The gas losses can be tightened up during the high da months without sacrificing consistency, and that's done with chip and timing.

Carbs where not designed to deliver fluid such as alky, and even with all the gurus out there, gas will always shear better through a carb then alky can. With a carb or even mechanical injection, it's a tuning detail that is only based upon an average, and yet will never be optimized from 0 to 1320. It's averaged for best results and therefor gives the assumption that it's optimized. You understand this by tuning the front half of the track, and then tuning the back half, and then tuning the whole track, and you'll never be able to half the front half tuned without compromise of the back half, and visa versa as well. The best delivery device for alky would be electronic injection, because it's programmable and you can tune it properly at different intervals down the race track. Mechanical injection is crude and primitive, but on higher hp levels (over 750), I would take mechanical over carb any day.

quote:

Originally posted by TOP38:
I believe after considering the difference in AFR between gas and alky, that gas contains more BTU's so alky is not more powerful than gas.

quote:

Originally posted by TOP38:
...the total BTU's in an alky combo is higher than a gas combo (adjusted for AFR) soooo if you can burn it, alky would make more power.

quote:

Originally posted by Lenny5160:

quote:

Originally posted by TOP38:
I believe after considering the difference in AFR between gas and alky, that gas contains more BTU's so alky is not more powerful than gas.

quote:

Originally posted by TOP38:
...the total BTU's in an alky combo is higher than a gas combo (adjusted for AFR) soooo if you can burn it, alky would make more power.

quote:

Originally posted by TOP38:
[ QUOTE]
Strange, one of your better posts,,, but.. the total BTU's in an alky combo is higher than a gas combo (adjusted for AFR) soooo if you can burn it, alky would make more power.. At least that's what the science says.. Something like 27000 BTUs for alky vs 19000 for gas.
Just some food for thought...

quote:

Originally posted by 1320racer:

it is and I will put my cars against a similar car on alky any day and it will be just as consistent.

ΜΟΛΩΝ ΛΑΒΕ

quote:

Originally posted by TOP38:
If you have two motors that make the same power, one on gas and one on alky, the alky combo will be faster.

Mike Greene

quote:

Originally posted by sc4087:

quote:

Originally posted by TOP38:
If you have two motors that make the same power, one on gas and one on alky, the alky combo will be faster.

I disagree. He's talking big engines with big cylinder heads. No way it's faster on alcohol. Been there, done that, proved it.

quote:

Originally posted by sc4087:

quote:

Originally posted by TOP38:
If you have two motors that make the same power, one on gas and one on alky, the alky combo will be faster.

I disagree. He's talking big engines with big cylinder heads. No way it's faster on alcohol. Been there, done that, proved it.

quote:

Originally posted by sc4087:

quote:

Originally posted by TOP38:
If you have two motors that make the same power, one on gas and one on alky, the alky combo will be faster.

I disagree. He's talking big engines with big cylinder heads. No way it's faster on alcohol. Been there, done that, proved it.

quote:

Originally posted by Roger McGinnis:
Most people don't take into consideration the difference in the cam that is necessary to make a big alky motor efficient. With the right cam, gas has no advantage other than needing a smaller fuel jug.