Camshaft Changes When Using Methanol

[Walter R. Malik]

The exhaust temp will also be lower with Methanol, so you can evacuate more mass in the same amount of time(Duration). We normally just open the exhaust a little later with Methanol.

Thanks Mike so I assume just a small reduction in exhaust duration rather than a decrease in lsa OR just run the same cam as the difference between petrol and methanol cam requirements is not worth the expense

Just changing the valve lash around can usually get it right; (if that camshaft for gasoline was right).

[KnightEngines]

Cooler = denser = less volume for a given mass.

[pamotorman]

I would think increasing the CR would make more power increase than the cam going from gasoline to methanol

[nitro2]

Methanol can burn a lot slower, or a lot faster, than gas, or about the same, it all depends on the methanol AFR.

I'm not talking about ignition delay. Strictly the actual burn time.