Topic: drilling jets

[tmht]

Anyone know where to get jet drills? Sudco doesn't list them in their catalog and google has turned up nada.

[TwoTired]

You can get jet reamers here:

http://www.cbperformance.com/catalog.asp?ProductID=525


Probably only good for the mains, though.  They have the measuring tools, too.

Cheers,

[tmht]

You can get jet reamers here:

http://www.cbperformance.com/catalog.asp?ProductID=525


Probably only good for the mains, though.  They have the measuring tools, too.

Cheers,

TwoTired to the rescue once again! Thanks!

[Jim F]

you can also go to MSC.........................http://www1.mscdirect.com/CGI/NNSRHM

Its a huge catalogue for the machining industry
they have micro drills that I have used even for poilot jets
but be very carfull as they do brake

Jim

[masonryman]

how does the # on the jet relate to size of the hole, in mm?

The main jets are simple, they would be easy to make. I have adjusted the grove in several sets to accept a thicker, easer to find O-ring, it is quicker and cheaper than a trip to the honda shop.

Mark

[Jim F]

It depends on the carb but if its a 1.25 main then its a 1.25mm dia.
If its the pilot, and its a number 25, then it measures .25mm and so on

Jim

[TwoTired]

The main jets are simple, they would be easy to make.

Maybe, but the design of the orifice is another matter.  While in a Keihin jet, the number indicates the orifice diameter (#100 =1.00mm), there is a bit more going on that simply a hole size.  If you take a very magnified look at the jet orifice, you'll find the approach and exit to the orifice restriction are ramped and contoured.  These ramps have fluid dynamic principles applied so that flow is more predictable over a speed range of the fuel flow, reducing turbulence.

Cheers,

[dusterdude]

snap-on tools,where i got mine