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Old 03-14-2011, 04:04 PM   #1 (permalink)
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leanburn, on other engines?

Is there anything special about the honda leanburn engines internally? I mean, why do they not suffer from lean run condition that ruins other engines?

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Old 03-16-2011, 12:44 PM   #2 (permalink)
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Lean burn can be done on other motors, just not quite a lean as Hondas. I run mine around 16.5:1 without any problems so far, although I only do this while cruising.
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Old 03-16-2011, 04:05 PM   #3 (permalink)
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combustion chamber shape and size play a big roll in being able to have lean burn.
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Old 03-19-2011, 09:06 AM   #4 (permalink)
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Wards Auto Logo Mercedes Says Dirty Fuel Problematic in U.S.

Mercedes Says Dirty Fuel Problematic in U.S.


Looks like sulfur content may play a part in why we don't have more lean burn engines in the US.
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Old 03-19-2011, 06:17 PM   #5 (permalink)
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Home made lean cruise

I'm into the second tank of testing a very basic lean cruise setup on BoB.
I use a digital vacuum sensor on the distributor vacuum advance line to switch a solenoid valve that allows some air to bypass the carburettor at cruise. I also run a basic water induction setup to keep temperatures down.
I don't have EGT or AFR gauges so I'm taking small steps until I get some useful figures to work with.

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