Evo exhaust gaskets
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
It doesn't help to talk about octane ratings, as North America uses a different system to Europe. Your 95 octane should be fine, which is what I use here in the UK, also when riding in Europe. In addition their fuels have different additives to ours, so it is not easy to make comparisons.
I currently have an S&S motor, which was set up by the manufacturer for their fuels. I had it dyno tuned after it was fitted and broken in, and ignition timing and fuelling were both adjusted slightly, to make it run better on our fuel.
I currently have an S&S motor, which was set up by the manufacturer for their fuels. I had it dyno tuned after it was fitted and broken in, and ignition timing and fuelling were both adjusted slightly, to make it run better on our fuel.
Stellar HDF Member
Joined: Aug 2012
Posts: 2,664
Likes: 184
From: Indiana, USA
The EVO combustion chamber is radically different than the Shovel it replaced which had a hemispherical combustion chamber. The then new EVO bathtub combustion chamber included squish area to facilitate complete burn of fuel. That said I would still not run anything less than 91 octane US in an EVO. Some people do, I never did....
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