Exjarhead Posted March 29, 2020 Report Share Posted March 29, 2020 Hi new to the forum, and was hoping to get some input on trying to dial in my fresh build. I have stock bore and stroke. Cylinders are sport trail ported, ( ken o'connor sport port), boyesen power reeds, 4 degree timing, air pods, total box delete, boost bottle, vitos hemi head 21cc domes, e-3 plugs, 93 pump gas. I started with 340 mains, and 30 pilots. Couldnt dial it in, needed more pilot jet, so installed a 32.5 and air srew is 1/4 turn from bottomed out. I have a 35 pilot ordered, but I feel this is very large and something else may be the problem. I was thinking I'm way rich, was going down to a 320 main, and try a plug chop. Any help or suggestions?? Thanks Quote Link to comment Share on other sites More sharing options...
Exjarhead Posted March 29, 2020 Author Report Share Posted March 29, 2020 I am 250 ft elevation, 50 degrees outside Quote Link to comment Share on other sites More sharing options...
hoppedupandcutdown Posted March 29, 2020 Report Share Posted March 29, 2020 That's a lot of fuel, sure you're not compensating for an air leak? Quote Link to comment Share on other sites More sharing options...
Exjarhead Posted March 29, 2020 Author Report Share Posted March 29, 2020 I never did a leak down test, as I did not rebuild the lower end. Changed the oil, clutch and water pump. It ran fine before the build. Quote Link to comment Share on other sites More sharing options...
Exjarhead Posted March 29, 2020 Author Report Share Posted March 29, 2020 I will do a leak down on it. Now I'm curious.... Quote Link to comment Share on other sites More sharing options...
Exjarhead Posted March 29, 2020 Author Report Share Posted March 29, 2020 Ok, leak down was good. I noticed oil spray from the pipes and the jugs, after a short ride, so jetting must be very rich. Right now with 340 mains, and 32.5 pilots it's running alright, but rich and has a small bog when you hit the gas from idle. I am 1/4 of a turn from bottoming out on the air screws. The carbs are synched and slide pull is also synched. I was planning on dropping my main, and going to a 35 pilot. Any suggestions? Comments? Quote Link to comment Share on other sites More sharing options...
Exjarhead Posted March 29, 2020 Author Report Share Posted March 29, 2020 I also mixed my gas initially 32 to 1 with 93 octane gasoline. Should I be at this ratio? Thanks Quote Link to comment Share on other sites More sharing options...
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