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Discussion Starter · #1 ·
Just got my H1 snorkeled using 2" pipe. Now it's obviously running lean. Took it for a spin down the road and the plug was white.

What main and pilot jet do you think I should start with?

I don't know what jet was in there from factory but it was tiny. I put a 137.5 keihin jet in it, and the hole is alot bigger than the factory one was. I have a 142.5 keihin jet too and you can't tell the difference by looking at the hole between the 137 and the 142. So the factory one must have been very small. The only thing I can tell by the stock jet is it says 85 on the side of it.

Anyhow, back to the story. I put the 137.5 in it and it didn't make much of a difference, still running pretty white. Get a couple lean pops. So I doubt putting the 142.5 in it is gonna make much of a difference.

Any suggestions on what sizes to start with?

Thanks
 

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Discussion Starter · #2 ·
Thanks wyo. You are referring to the keihin jets correct? Maybe I'll go pick up a 148 keihin and try that. I do have a couple of #4 washers but haven't tried them yet.
 

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Discussion Starter · #3 ·
Can anybody tell me what the stock pilot jet is in an 07 h1?

Thanks
 
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