I drive a 71 TR6 on the street - absolutely bone stock, 8 deg advance, some
of the emissions stuff disabled but in place, maybe 5000 miles on rebuild.
I run regular gas and have no pinging, no detonation, and get 22 - 28 miles
/ gallon.
Probably unrelated to this discussion, I changed to plugs one range hotter
and made a nice improvement for here in northern Illinois with quite a bit
of in-town driving. The plugs always looked sooty and this has cleared that
up nicely.
At 02:37 PM 5/12/2004, Arakelian, Peter wrote:
>I would like to start an on-list discussion of octane, timing and performance.
>I have a stock 1971 TR6. I currently run premium gas, which is what is
>recommended. With all the vacuums, etc attached I time it at 8 BTDC. No
>ping, runs great.
>My understanding is that lower octane gas burns faster and a little
>hotter, but at 20 cents/gallon cheaper it is tempting to switch to the
>lower octane and retard the timing until it doesn't ping.
>Any thoughts? What are the down sides? Has anyone done this? Am I
>missing something?
>
>Peter Arakelian
>Domestic Buyer
>Moss Motors, Ltd.
>(805) 679-7214
>(805) 692-2510 Fax
>arakelianp@mossmotors.com
uncle jack
|