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| Joined: | 03-11-2005 |
| Location: | San Anselmo, California USA |
| Posts: | 983 |
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Since no oxygen sensors were in general use when the JH was built tuning was done using Co readings. The manual states 1.2 - 2% Co at idle for the 4 speed and .2 - .3 % for the 5 speed as emissions were further regulated, (sounds kind of lean).
Judson has used exhaust gas temperature readings to tune Dellortos.
I prefer the seat of the pants method.
Kurt