Slide needle specifications for Dellorto PHVA-PHBN motorcycle carburetors (A slides): Series 13680 X 08 A
Detailed technical information regarding DellOrto motorcycle carburetors, how to tune, parts diagrams, slide specifications, needle specifications, jet specifications, and atomizer specifications.
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This information was gleaned from Eurocarb. When I originally created this page on , I meticulously recreated the table of values from a very difficult to read original image. Mistakes were definitely present as the original image was of poor quality. Here is a link to the original image in case you would like to scrutinize any particulars.
On I noted that Eurocarb had greatly improved the quality of these specifications. I've updated the specification with accurate information as provided by Eurocarb.
Photo courtesy of Eurocarb.
| Type | Value X | Characteristic expressed in millimeters | |||
|---|---|---|---|---|---|
| ØA | ØB | C | D | ||
| A02 | 02 | 2 | 0.6 | 20 | 12 |
| A07 | 07 | 2 | 1 | 18 | 14 |
| A08 | 08 | 2 | 1 | 20 | 12 |
| A10 | 10 | 2.02 | 0.6 | 18 | 14 |
| A11 | 11 | 2.02 | 0.6 | 20 | 12 |
| A12 | 12 | 2 | 1.79 | 20 | 12 |
| A13 | 13 | 2 | 1.79 | 22 | 10 |
| A14 | 14 | 2.02 | 1 | 18 | 14 |
| A15 | 15 | 1.98 | 1.77 | 20 | 12 |
| A18 | 18 | 2.04 | 0.61 | 21.9 | 10.07 |
| A19 | 19 | 1.98 | 1.77 | 20.3 | 11.7 |
| A20 | 20 | 2 | 1.6 | 20 | 12 |
| A21 | 21 | 1.99 | 1.79 | 18.1 | 13.8 |
| A23 | 23 | 1.98 | 1 | 18 | 14 |
| A24 | 24 | 1.99 | 1 | 20 | 12 |
| A25 | 25 | 2.02 | 1.4 | 20 | 12 |
| A26 | 26 | 2 | 1.9 | 20 | 12 |
| A27 | 27 | 1.98 | 1.8 | 20 | 12 |
| A28 | 28 | 1.99 | 1.8 | 20 | 12 |
| A29 | 29 | 2.02 | 1.2 | 20 | 12 |
| A30 | 30 | 1.99 | 1.40 | 20 | 12 |
| A31 | 31 | 1.98 | 1.40 | 20 | 12 |
| A33 | 33 | 2 | 1 | 21 | 11 |
| A32 | 32 | 1.98 | 1.70 | 20 | 12 |
| A34 | 34 | 2 | - | 21 | 11 |
| A35 | 35 | 2 | 1.60 | 18 | 14 |
| A36 | 36 | 2.02 | 1.60 | 18 | 14 |
| A37 | 37 | 2 | 1.20 | 18 | 14 |