[Healeys] gas/alcohol

[Robert Markovich]

Thank you. Engine runs cool and timing and carburetor mixture are spot on. That leaves carbon as the likely culprit tho I may try cooler plugs as well …


Sent from the all new AOL app for iOS


On Monday, September 2, 2024, 8:25 PM, Michael Oritt <michael.oritt at gmail.com> wrote:

Running on may be the result of several different factors including incorrect timing, carbon in the combustion chamber and high engine temperature.
On Mon, Sep 2, 2024 at 4:34 PM Robert Markovich via Healeys <healeys at autox.team.net> wrote:

Wonder whether today’s ethanol fuel contributes to the run-on (dieseling) many Healey owners experience. If you’re lucky (and have set carbs and timing correctly), you can solve the problem by flooring the gas pedal after turning off the ignition and inundate the cylinders with air, especially on a BJ8 with its larger HD8 SUs. Otherwise, as on my BN7, you must stall the engine by lifting the clutch pedal in fourth to keep it from running on. Am trying Techron combustion chamber/fuel system cleaner on the chance removing built up deposits will do the trick, but we will see …


Sent from the all new AOL app for iOS


On Monday, September 2, 2024, 1:01 PM, Bob Spidell via Healeys <healeys at autox.team.net> wrote:

 Living in California, I have been running 'gasahol' in all my cars longer than some. Best we can usually get is 91-octane; I was able to buy higher-octane--93 and 100--fuel at times but, guess what: the octane was boosted with ethanol (added water to some and measured before and after; don't recall the exact mix but IIRC I figured it was 10% ethanol; standard from the pump seems to be about 8%).
 
 I have about 140K miles on my BJ8 running mostly 91-octane gasahol, and there have been no negative effects save some 'vapor lock*' on starting when hot. I replaced the hard line to carburettor flex line that had been on the car for a couple decades and, except for it being a little stiff there was no visible degradation. About 8 years ago I put a new carb jet in pure/denatured ethanol and there is also no visible degradation. Rubber components sold since the introduction of gasahol are impervious to the stuff. Theoretically, due to its oxygen content gasahol could cause an engine to run a little lean, and at least one knowledgeable person recommends changing to rich carb needles, but both my cars have long since been tuned to run on it with std. needles. The BJ8 was rebuilt to standard 9.1:1 compression ratio, the BN2 is a 100M and has the 'high compression' 8.7:1 pistons. I've been told Healeys will run fine on 91 up to about 11:1 compression, depending on the cam and timing. 
 
 Good luck trying to 'steal' from an airport--when I owned airplanes I would occasionally get some--but the fuel providers aren't likely to be enthusiastic about selling it to you. Technically, you would owe 'road tax,' and the stuff is full of TEL and highly toxic (don't breathe any of it and don't let it get on your skin). 
 
 * not technically 'vapor lock,' but the alcohol vaporizes and cavitates the fuel next to the exhaust manifold, causing some stumbling for a mile or so.
 
 Bob
 
 On 9/2/2024 7:45 AM, carl and gerry rubino via Healeys wrote:
  
 
 A message from Canada. For the last 30 years I have been running my 100/6 on 93 gas with no alcohol. In its infinite wisdom our government is going to legislate alcohol in all grades of gas. Other than stealing gas from an airport any recommendations to deal with this? 
 _______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation  $12.75

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

Healeys at autox.team.net
http://autox.team.net/mailman/listinfo/healeys

Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/rmarkovich@aol.com




_______________________________________________
Support Team.Net http://www.team.net/donate.html
Suggested annual donation  $12.75

Archive: http://www.team.net/pipermail/healeys http://autox.team.net/archive/healeys

Healeys at autox.team.net
http://autox.team.net/mailman/listinfo/healeys

Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/michael.oritt@gmail.com





-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20240903/33054fc4/attachment.htm>