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Will reassemble the power valve and give it a try. I'm skepticle but we'll see, nothing to loose at this point.
In reinstalling the power valve I noticed that bushing #5 from the diagram was installed on the wrong side! It had been wrong for a while because I could see where the spring had been wearing into it. Not sure if it was that or the slide but it sure seems good now!
Thanks everyone!
dtl210, glad it’s running better. Also make sure your floats are adjusted properly. I’ve seen a 2 bikes bog between jumps in a rhythm section (oddly enough it was the same section) from the float being not properly adjusted.
The Shop
The bog is completely gone though, revs clean and smooth all the way through the rpm range. The F1 arms are in the mail, not sure if I'll keep them or just try to sell them on ebay.
Just happy it's ride-able now after 3 weeks of frustration.
Hoping to hit the track on Thursday. It's normally pretty deep and wide open so I plan to start a little rich and then lean it out as needed.
Only issue was the radiator cap, it fell off after 2 laps. Apparently drilling and putting a pin in these things is critical!
Pit Row
I spoke with the previous owner again when I was trying to get it running. He said they're running a 47.5 pilot with a 510 main, needle in the 3rd position main with our weather right now. He swears by the app on his phone that gave him those specs.
- These bikes like to stay warm. You might try blocking a radiator off a little bit to keep the temps up in the 120-130 range where the bike seems happy.
- Research the "Jarvis" mods. There are situations where the float bowl can actually run out of fuel after long pulls, these mods help fuel get into the main jet cavity quicker.
- If these issues just started, it's possible your top end is wearing out. A compression check never hurts.
On mine it was ok but still super finiky after doing everything described in this thread. I did the Jarvis mods and put in a JD jet kit. I haven't had to touch the carb since.
https://technologyelevated.com/product/36mm-sc2-smartcarb/
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