Difference between revisions of "Drilling jets"

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<nowiki>*</nowiki>For gauge and other drill bit sizing info, check [http://en.wikipedia.org/wiki/Drill_bit_sizes the wikipedia article].
 
<nowiki>*</nowiki>For gauge and other drill bit sizing info, check [http://en.wikipedia.org/wiki/Drill_bit_sizes the wikipedia article].
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Also, from scooterforum.net, it's reported that Dell'orto jets go up 5 for every 1 gauge down (approximately), i.e. jet 50 - gauge 75, jet 55 - gauge 74, jet 60 - gauge 73, etc.
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[[Category: Performance Tuning]]
 
[[Category: Performance Tuning]]
 
[[Category: Modification Tutorials]]
 
[[Category: Modification Tutorials]]

Revision as of 20:50, 28 September 2010

Drill sizes per jet.jpg

Since it seems a lot easier to drill a jet out than to pay $6.95 and wait for it to be shipped if you don't have a local store, I am posting this chart that relates bit sizes to jets for both the Dellorto and the Bing.

Here is a link to jet reamers made just for this.

Here is a link to jet gauges so you can tell what size you got.

Original chart (right)
Copied wikified chart (below)

Bing jet sizes Dellorto jet sizes Millimeters Gauge* Inches (fraction) Inches (decimal)
. . . 80 . .0135
. . 0.35 . . .0138
. . . 79 . .0145
. . .038 . . .0150
. . . . 1/64 .0156
. . 0.40 . . .0157
. . . 78 . .0160
. . 0.42 . . .0165
. . 0.45 . . .0177
. 43 . 77 . .0180
. . 0.48 . . .0189
. . 0.50 . . .0197
. . . 76 . .0200
52 (.0207") 48 . 75 . .0210
. . 0.55 . . .0217
54 53 . 74 . .0225
56 . 0.60 . . .0236
. 57 . 73 . .0240
76 63 . 72 . .0250
. . .065 . . .0256
. 66 . 71 . .0260
. . 0.70 . . .0276
. . . 70 . .0280
. . . 69 . .0292
. . 0.75 . . .0295
. . . 68 . .0310
. . . . 1/32 .0313
. . 0.80 . . .0315
. . . 67 . .0320
. . . 66 . .0330
. . 0.85 . . .0335
. . . 65 . .0350
. . 0.90 . . .0354
. . . 64 . .0360
. . . 63 . .0370
. . 0.95 . . .0374
. . . 62 . .0380
. . . 61 . .0390
. . 1.00 . . .0394
. . . 60 . .0400
Note: This chart is not guaranteed to be an accurate reproduction of the original. Feel free to add more jet sizes and measurements to the table (or if you don't want to figure the table out, add them to the talk page and they will be added for you).

*For gauge and other drill bit sizing info, check the wikipedia article.

Also, from scooterforum.net, it's reported that Dell'orto jets go up 5 for every 1 gauge down (approximately), i.e. jet 50 - gauge 75, jet 55 - gauge 74, jet 60 - gauge 73, etc.