Mixed main jet sizes in Webers

[356robo]

Can anyone think of any practical reason that my Weber IDTP carbs have a combination of main jet sizes? The engine is a 2.2 with an E cam and S pistons & Cylinders. #3 and #4 have main jets marked 105. The others are all marked 120. Shouldn't they all be 125? They could have been reemed to size, but I have no way to tell, 'cus I don't have the measureing tool.

BTW, all of the idles are now 55, but the old ones were also mixed in size.

Thanks,

Rob
805-801-5848

[356robo]

Question answered. I decided to put in 6 all new 125's.

Rob

[CamBiscuit]

Rob - perhaps they had been drilled to be all the same size?

[chiroracer]

Funny story,how'd it work out? usually if they are drilled you grind off the size markings too.

[356robo]

I decided to replace all main jets with new 125's. No all I have to do is figure out why #3 is apparently not firing and the resulting fact that I can get it to idle at 1100-1200 but cannot get it to idle at 900. When I try to lower the idle speed, it falls through to 600-700.

Rob