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Witches Brew for Big Block Super Tigre?

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Witches Brew for Big Block Super Tigre?

Old 02-13-2004, 01:36 PM
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Default Witches Brew for Big Block Super Tigre?

Are there any secret formulas for a 'witches brew' of home mixed methanol that you have had good results with on big block Super Tigres in the 2500cc to 4500 cc range? Can you run without nitro with decent performance? Must you have nitro in formula? I am new to this size of engine and find these engines to be real 'stump-pullers' with a big thirst for fuel (at $15-$20 / gal. store-bought variety).
Old 02-13-2004, 01:39 PM
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Default RE: Witches Brew for Big Block Super Tigre?

eeek! I pay 8.95 for rich's brew st fuel.
Old 02-13-2004, 05:33 PM
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Default RE: Witches Brew for Big Block Super Tigre?

Except for the SuperTigre G2300, the large SuperTigre engines can use fuel with 10%-12% oil content AFTER they've been well-broken-in on a fuel with NO LESS than 15% oil content. They run best when the nitro content is kept below 10%. Actually, 5% works quite well. If you wish, though, you can run with zero nitro with no problems. The SuperTigre engines are Italian design and "like" castor oil and low nitro.

Most of the large 'Tigres out there were made before production moved to the Far East, but they are all the same in their fuel requirements. SuperTigre of Italy recommended fuel with castor oil as the only lubricant. That's all they used. A lot of people have had success with fuels that had 50% of the oil content being castor and 50% synthetic.

For a good "home brew" formula (by volume):

12% Castor Oil
5% Nitro Methane
83% Methanol

You can eliminate the nitro and save some money, so you get:

12% Castor Oil
88% Methanol.

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