|
100 Ll Avgas
We in Calif. have only 91 octane as a maximum choice at the pump. Has anyone had any experience with 100 LL avgas?
Pros, cons, thoughts. |
Rodger,
You may wish to look at these sites. Some fairly good information on Avgas. Avgas Avgas2 There are major differences in Avgas and autogas. Vapor pressures, specific gravity, etc. If it were my car I would go to the race fuel folks and mix if I was having a problem with detonation based on low octane ratings. I share your problem. My 928 does not like the current offerings in California. The engine management system is constantly backing off the timing and going rich to avoid detonation. It loses in the area of 75 hp. with the current available fuel over 25% race fuel/ 91 Shell mixture. (This on a chassis dyno.) |
I was told that avgas should be avoided because among the other reasons listed in that nice link(thanks Richard) there are additives to keep the fuel from freezing at high altitudes. A friend swore by avgas until the back of his pristine black GTO became discolored. We asked engine builder and aviation enthusiast Lee Bandrow and he quickly knew what it was. He scolded us like disobedient puppys and sent us on our way.:CRY:
|
But...
...AVGAS is not legal to put in cars! No road tax collected or paid!
But don't let that stop you..... Rick:rolleyes: |
You know everyone has a story, but a knowledgable engine builder and plane owner in Birmingham told me that 100ll actually burns slower than car gas. His recomendation was to mix at 20%avgas with 80% 93 pump gas to increase octane rating. But at that rate it would not slow the fuel burn down any. As I said, it's all Greek to me, just reporting what a self proclaimed expert said.
Richard Memphis |
| All times are GMT -7. The time now is 12:14 AM. |
Powered by vBulletin® Version 3.8.0
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
The representations expressed are the representations and opinions of the clubcobra.com forum members and do not necessarily reflect the opinions and viewpoints of the site owners, moderators, Shelby American, any other replica manufacturer, Ford Motor Company. This website has been planned and developed by clubcobra.com and its forum members and should not be construed as being endorsed by Ford Motor Company, or Shelby American or any other manufacturer unless expressly noted by that entity. "Cobra" and the Cobra logo are registered trademarks for Ford Motor Co., Inc. clubcobra.com forum members agree not to post any copyrighted material unless the copyrighted material is owned by you. Although we do not and cannot review the messages posted and are not responsible for the content of any of these messages, we reserve the right to delete any message for any reason whatsoever. You remain solely responsible for the content of your messages, and you agree to indemnify and hold us harmless with respect to any claim based upon transmission of your message(s). Thank you for visiting clubcobra.com. For full policy documentation refer to the following link: