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main jet size help


rx7500hpt2

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Ok mods are fmf fattys and no air box lid. The reeds and cages are off an rz350(used to have boyesen power reeds). The carbs have 290 mains in them right now. The reed change obviously made it to rich. Im at sea level, 40:1 mix. I not sure what size mains to swap in. Any suggestions?

Edited by rx7500hpt2
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I found some 260s and put them in. Doesn't seem much better. Boggy, loaded up and smokey. I checked the clip its at the top the leanest position. The float level is correct. I'll keep trouble shooting.

 

Funny thing is the 28mm pwks off my rz banshee work perfect with both bikes. Takes one loose kick to start up and throttle response is real peppy. The rz has the power reeds, thats the only difference.

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Three dumb questions about the stockers you put back on.

 

1. Is the choke tube connected between both carbs?

2. Did you put the right bowl on the correct carb?

3. Did you accidentally put the slides in backwards?

 

What have you done to the bike since the last time it ran good?

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yes, yes and oops. upon closer inspection the slides are backwards. Thats how they were stored for 2 years, didn't think they would have been mixed up.

 

Its been 2 years since ive used the stockers. Then I had fmfs, power reeds and a toomey 2into1. With 290 mains, 30 pilots, clip in the leanest position. Now its the fmfs, stock rz reeds and cut apart airbox. Now I'll see how it runs with the 260 mains.

Edited by rx7500hpt2
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