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| Joined: | 03-13-2005 |
| Location: | Salt Point, New York USA |
| Posts: | 208 |
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I went through the same issues with my first set of Dellorto's a few years ago. For the stock 907 I strongly suggest using the jetting that Greg Fletcher recommended. That is:
Venuris: 33mm
Main Emulsion Tube: 7772.5
Main Air Correction Jet: 190
Main Jet: 145
Pump Jet: 45
Idle jet 55
Starter (or cold start) Emulsion Tube: 7482.1
Starter (or cold start) jet: 70
I believe the smaller chokes are critical to get the air velocity up an low rpm. I also used the same jetting on 45's and they work beautifully. I think you will be delighted at the difference.
For the 2.2 stroker with 107 cams:
Venuris: 37mm
Main Emulsion Tube: 7772.8
Main Air Correction Jet: 230
Main Jet: 160
Pump Jet: 50
Idle Jet 58
Starter (or cold start) Emulsion Tube: 7482.1
Starter (or cold start) Jet: 70
Good luck,
Jim