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unless you are trying to roast marshmellows... why?

Posted by: WJM on 2006-05-26 06:14:18
Account #: 1846

In Reply to: Who knows the difference in heat content (BTU/gal) between 87 and 93 octane pump gas? TIA posted by VonK :: Retired on 2006-05-23 08:17:59

The difference in heat content isnt as much of a player in internal combustion dynamics, as its flame speed, pre-detonation characteristics, and the car's ignition timing

-WJM

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Thread:

Who knows the difference in heat content (BTU/gal) between 87 and 93 octane pump gas? TIA - VonK :: Retired 2006-05-23 08:17:59 (129 views)

Here are two charts I came across that appear to answer my question. ---> - VonK :: Retired 2006-06-12 09:00:59 (219 views)

I thought Octane was basicaly... - Justin517 2006-06-09 08:19:21 (141 views)

(Edited) Actually, two fuel properties play a significant role in knock/ping prevention: ..... - VonK :: Retired 2006-06-10 09:48:28 (128 views)

I've read that today, typically less expensive additives like ethanol and mtbe are added - Yippers® 2006-06-10 19:29:25 (121 views)

It's obvious that I'm not a chemist. ;) ---> - VonK :: Retired 2006-06-11 20:55:37 (89 views)

little or none. octane rating is not a measure of energy content or burning temp. - Morgoth 2006-05-26 13:03:42 (100 views)

I know that, but however little, there's still a difference. - VonK :: Retired 2006-05-26 19:40:19 (94 views)

here are some although i've seen regular listed at 124K in other places.... - Morgoth 2006-05-27 00:26:48 (112 views)

I think they transposed the values for the octanes. Most everything I've read shows a - Yippers® 2006-06-01 21:09:01 (103 views)

your link only deals with rfg. looks like they're using regular as their base...... - Morgoth 2006-06-02 22:51:54 (80 views)

The regular (conventional) energy / gallon is what I was addressing. That was just one of the first - Yippers® 2006-06-03 00:16:11 (104 views)

Just what the doctor ordered! Thanks. :) - VonK :: Retired 2006-05-27 07:57:00 (127 views)

i've never found any increase with higher octane number.... - Morgoth 2006-05-27 10:55:36 (118 views)

Better SO2 than HS2. :) Did you have a new cat? - VonK :: Retired 2006-05-27 12:25:18 (83 views)

could have been that too. no new cat and this happened several times. - Morgoth 2006-05-27 18:16:51 (71 views)

unless you are trying to roast marshmellows... why? - WJM 2006-05-26 06:14:18 (114 views)

I'm well aware of the influence factors you mentioned, but I guess my question still stands. - VonK :: Retired 2006-05-26 07:41:37 (119 views)

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