Bracket Talk
Methanol, ethanol and race gas

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https://drr.infopop.cc/eve/forums/a/tpc/f/80760912/m/7187038186

September 18, 2018, 08:13 AM
62Galaxie
Methanol, ethanol and race gas
Do these 3 fuels require different ignition timing for the same motor?
September 18, 2018, 09:54 AM
Lenny5160
Require? No. But your optimal timing will likely be different for each fuel.


Tony Leonard
September 18, 2018, 10:46 AM
FootbrakeJim
I'd love to see some A-B-C dyno testing for questions such as this, (finding optimum timing for each of the fuels). But then, optimum advance would probably be different for almost every engine combination, no matter what fuel.


Dan "Jim" Moore
Much too young to feel this damn old!!
September 18, 2018, 11:14 AM
markemark
For me, the best A-B-A testing was at the track even after being initially run on a dyno.

With MSD Grid ignition all timing changes are a simple keystroke. The data acquisition files record what timing was used for further reference when determining what actually worked best in your engine.
September 18, 2018, 11:20 AM
Roger McGinnis
Not required, but if you're changing fuel for better performance, you'd definitely want to optimize the timing as it would be different for every fuel and every octane.



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