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snakebit
10-14-2007, 01:11 PM
How much Torco is used to raise octane from 91 to 93? I just need to keep it around for those times I can't find 93 and wondering how much to stockpile.

I know it's not cheap. Depending on the answer, I may go for a timing card instead, (costs about 3 cases of Torco).
chuckerants
10-14-2007, 07:09 PM
For me, 1/3 to 1/2 can did the trick.
99mx5
10-15-2007, 02:03 PM
Half-can for a full tank? There's a time-attack track-day this weekend, I was going to put a full can for a tank. Would a track-day be enough to need a full can per tank?

Tom, you coming?
mx3jmcb
10-15-2007, 05:01 PM
i'd just buy 2 gallons of Sonoco racefuel to 3/4 tank....116 octane, its sure to raise the octane level a few points. At about 4.50$ a liter its cheap peace of mind at the track.
Mx5-4me
10-15-2007, 08:45 PM
i'd just buy 2 gallons of Sonoco racefuel to 3/4 tank....116 octane, its sure to raise the octane level a few points. At about 4.50$ a liter its cheap peace of mind at the track.

If you have a wideband make sure you use unleaded race fuels unless your wideband can handle leaded fuels..

I believe Sonoco 260 GT Plus is unleaded 104 Octane
chuckerants
10-15-2007, 09:59 PM
Half-can for a full tank? There's a time-attack track-day this weekend, I was going to put a full can for a tank. Would a track-day be enough to need a full can per tank?

Tom, you coming?

When I first got some Torco from Tom, I added the entire can to a full tank. Then as I got to 1/2 tank of gas left, I'd fill up and it ran fine. So I waited til it got to 1/2 tank of fuel again and it still ran great. So from then on, I'd only add about 3 or 4 glug-glug-glugs of Torco.

For a track day, a full can is definitely called for (as cheap insurance) unless you're already running race gas.