just rebuilt my 22r .30 over pistons and comp cam 260s. put a new weber carburetor on it with all the new parts but having problem tuning it in. weber sent me new jets for it, idle jets .050 .040 main jets .130. air corrector jets .180 and .170. running stock mechanical fuel pump with a pressure regulator at 3lbs. runs ok untill i mash the secondaries then it chokes and sputers till the higher rps the air mixture screw is about 4 turns out till it starts running smooth. can anyone help me? im at around 5000 feet in elevation by the way.

 

You know, those jets sound a little small, even for your elevation. I had a stock bottom end, never rebuilt to my knowledge, stock head, just a header and Weber, running at about 4,000' elevation. 4 turns out is too much(means jets too small, running lean). Follow the tuning instructions in the first post here to a T
https://www.yotatech.com/forums/f115...b-info-241818/

This is more for the synchronous modification I did after I had it tuned progressive, but it should still apply somewhat as far as what jets you should expect to run
https://www.yotatech.com/forums/f114...talled-225236/

 

well i think i have my main jets figured out im not real sure what i need to do with the air corrector jets. do i need to go smaller and them?

 

Which jets have you changed from the sizes listed in your first post? Just the mains, or idles and mains? List the jets that came in the carb, then each configuration you've tried since then.

My general experience running it progressive was if I changed 1 fueling jet, I needed to change all of them. Then the air correctors is more of a fine tuning and mostly makes a difference at higher rpms. Unless you've really built the bottom end for a higher redline, your 180/170 air correctors should be fine. These carbs aren't really designed for a large(relatively) and low revving engine like a 22r, so even though you're at high elevation, don't be surprised if you have to go richer than the stock jets that came in it.