I'm thinking about drilling out my secondary main jets on my nikki. Does anyone have any experience doing this? I know it isn't the greatest idea when I could just buy richer jets but I want to give it a try.


Thanks,
-Crispin

 

Usually I only drill as a temperary test looking for AFR's. A drilled jet won't be as accurate as a normal one. I have a bag of weber jets that I use to drill as a first test for size then I know about the size I need and only buy that one and one bigger and smaller for fine tuning.

 

That's exactly what I was thinking, do it as a temporary test.

 

I have never done it, but tell the results if it works better.

 

+1

 

Yea it works good for testing we drilled lots when we didn't have what we wanted .. FWIW. If you turn your bit a little faster than normal .. Drill the hole out and shut the drill off before removing the bit from the jet and don't ream it just shut it off and let it stop ,,, Drill bits always cut an extra groove when they are extracted from the hole when still spinning ,that's what screws the hole more than anything.. if you use numbered bits the hole will be very close

 

The only problem with drilling jets is remembering what size you drill them. To do it right buy metric drills and file the original numbers off so you know they are drilled. Another nice tool to buy is a set of jet gauges. I have started gauging all of my jets new or used because a lot of the time they aren't the right size. I have found this on both weber and dellorto.

 

true that, not remembering the size or # lol