Drill Sizes?

[dolluper]

Hi Guys I lost my charts if someone has one handy can you tell me if I'm right or not....Well here it is
Aircraft size # 40 is .0980 decimal size right?
Aircraft size # 53 is .0595 decimal size right?
Have to drill the passages on this old Marvel Schebler carb so buddy can get his old JD 630 back working
Thanks ifin you can help here

 

[Kenneth Brown]

Re: Drill Sizes?

My box-o-bits agrees with you although mine doesn't go to the 4th point and lists #53 as .059.

 

[Major Woods]

Re: Drill Sizes?

Drill sizes are here.
http://www.saw-online.com/Tips/drill.htm

 

[dolluper]

Re: Drill Sizes?

Great thanks guy's she will be popping back on after lunch,on the mighty twin JD

 

[Bigprairie1]

Re: Drill Sizes?

Hi Guys I lost my charts if someone has one handy can you tell me if I'm right or not....Well here it is
Aircraft size # 40 is .0980 decimal size right?
Aircraft size # 53 is .0595 decimal size right?
Have to drill the passages on this old Marvel Schebler carb so buddy can get his old JD 630 back working
Thanks ifin you can help here

Dolluper, you are exactly right with the above info. Those are the correct sizes per numbered drill. Go for it.
BP

 

[dolluper]

Re: Drill Sizes?

Has been a long time since I worked on one of those old farm tractors with those prersky Marvel Schebler carbs but I cleaned out the passage ways with the drill bit and threw the carb back together and that JD 630 2 cylinder sure does run sweet now.....owner says almost like brand new.....I was only 4 when it was built

 

[External Combustion]

Re: Drill Sizes?

^^^^^^^^^^^^^^^^

Pup!

 

[dolluper]

Re: Drill Sizes?

I hear you pappie but it was new in 1959,original carb