likestrikes
10-19-2007, 02:52 PM
Is there a chart that states what the actual hole diameter is based on the jets size. For example, a 144 main jet equals .032 etc etc.
I ask because years ago when I called Sudco and spoke to someone he claimed that the best way to jet a carb when more fuel was desired was to simply drill it out until you are satisfied with the jetting. I had a 0-60 index case and did as he suggested and it worked out great. I have since jetted everything this way and had no problems, although you cannot go back down. My only concern was that a drilled hole may not be a smooth as a purchased jet and could upset the mixture. He told me not to worry but if I was overly concerned that I should get it close and then buy the jet new with the same diameter hole I created with a drill bit.
So, now I have a bag of jets that I have tinkered with and would like to know roughly what there equivalent to a jet size is in comparison to the actual hole I drilled. Has anyone seen a chart such as this? I'd like to print one out for the shop...... Thanks for any help.
I ask because years ago when I called Sudco and spoke to someone he claimed that the best way to jet a carb when more fuel was desired was to simply drill it out until you are satisfied with the jetting. I had a 0-60 index case and did as he suggested and it worked out great. I have since jetted everything this way and had no problems, although you cannot go back down. My only concern was that a drilled hole may not be a smooth as a purchased jet and could upset the mixture. He told me not to worry but if I was overly concerned that I should get it close and then buy the jet new with the same diameter hole I created with a drill bit.
So, now I have a bag of jets that I have tinkered with and would like to know roughly what there equivalent to a jet size is in comparison to the actual hole I drilled. Has anyone seen a chart such as this? I'd like to print one out for the shop...... Thanks for any help.