If there is only one 'spec' gas then there is only one way to build the engine..
For the gas, either blown or unblown.. Sounds to me like you would rather be
backed into a corner than make a choice , unfortunately that same attitude backs
the rest of us into the same corner you painted for yourself... Why not gain the
knowledge of what to chose and pick wisely?
Dave
ardunbill@webtv.net wrote:
> Hi Folks, if you don't mind could we kick this topic around a little, it
> does matter to me and is "my business" because I plan to run my Ardun
> blown or unblown in the future on gas only.
>
> I am aware that a variety of approved spec gases have been available at
> Bonneville for years, and they seem to have various characteristics. In
> a race gas I imagine we want a certain octane and a good power, with no
> harmful detonation under the conditions of use. Note I said "harmful"
> because there is slight detonation that causes no harm, and severe
> detonation that breaks parts.
>
> I have heard rumors that there is sometimes confusion about what gas to
> use, from the selection available, and if people choose wrongly, they
> may wind up with detonation damage in highly stressed engines.
>
> Now it comes that VP gas will be available at ECTA, which is not a bad
> thing because honest records should be set with one definite approved
> fuel. I don't know if more than one spec VP gas will be offered at
> ECTA, but I am of the opinion that ONLY ONE should be offered, and the
> same gas should be offered from now on, to simplify tuning and engine
> prep for everybody who uses gas.
>
> I don't know if NASCAR permits more than one spec gas at their meets,
> but I think it would be best if they did.
>
> At the historic Isle of Man T.T. motorcycle races, the great tradition
> was that one fuel only would be supplied to all competitors, for many
> years it was 100 octane premium pump gas (petrol they preferred to call
> it), but it may be some spec race gas today, if so, everybody uses the
> same gas.
>
> I personally dislike the idea of a "guessing game" about choosing which
> of a range of options will work best in my engine based on what I
> "think" the fuel rep is trying to tell me and how I must tune for it.
>
> The thoughts of those experienced in dealing with this issue at
> Bonneville or elsewhere will be appreciated. Come on lads, don't ignore
> this now!! Cheers Ardun Bill
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