Originally Posted by
B17overhead
Thanks Cory, but what brand and model is that: VP110?
.. and is that 110 rating you say you use the (R+M)/2 average or is it ROM 110?
I'm interested in actual race gas brand and model number vs. user experience (Hopefully track as well as dyno).
Mixed pump gas with race or straight pump gas is not under consideration.
Aviation gas is another I won't use.
I've researched the lead aspect and there is no evidence 2-strokes like lead. Some have theorized it helps lubricate the rings, but that's what the oil is for. Lead is just one approach to get anti-knock performance versus using more of some other chemicals.
In the end, the mfg. anti-knock rating of the gas and specific heat is about all that matters. If it is rated 91 leaded or 91 unleaded, it makes no difference.