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 Post subject: Piped S2 jetting?
PostPosted: Fri Mar 16, 2012 5:19 pm 
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Joined: Sun Jul 17, 2011 4:14 pm
Posts: 161
Location: Syracuse,NY
Hi all,
Let me start by saying that I'm Not looking for jetting specs due to the obvious countless variables but I am wondering about where folks have ended up after Jim's chambers have been installed... or am I the only guy on earth putting pipes on a 350 :think:
Using Stock airbox.
Thanks

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 Post subject: Re: Piped S2 jetting?
PostPosted: Fri Mar 16, 2012 5:38 pm 
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Joined: Wed Jun 08, 2011 11:34 pm
Posts: 10020
Location: North Central NC
There's a 350 with Dencos in the "Jetting Examples" section of the resource site: https://docs.google.com/spreadsheet/ccc?key=0AnD68ZypdH9McGQ3RmRkeF91RkZycm9DTFE3dmlhUXc#gid=0

I doubt if the fact that the carbs in the example are 26mm makes much difference, but I bet some guys here know.

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 Post subject: Re: Piped S2 jetting?
PostPosted: Sat Mar 17, 2012 12:40 am 
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Joined: Wed Jun 08, 2011 10:12 pm
Posts: 2169
yup. i would say start at 95's with stock 24's.and the 26's make it better. incidentally the bike is still running awesome. Rode it last week and almost flipped it in first. One thing, I shimmed the needles a bit at the gap so they are now 1/2 richer than in the list jim posted. :D

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 Post subject: Re: Piped S2 jetting?
PostPosted: Sat Mar 17, 2012 1:15 am 
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Joined: Sun Jul 17, 2011 4:14 pm
Posts: 161
Location: Syracuse,NY
m in sc wrote:
yup. i would say start at 95's with stock 24's.and the 26's make it better. incidentally the bike is still running awesome. Rode it last week and almost flipped it in first. One thing, I shimmed the needles a bit at the gap so they are now 1/2 richer than in the list jim posted. :D

Image


Nyce bike! and thanks for the recipe'. Thats about where I figured I'd wind up. A few differences though... I'll be using UFO's and a stock airbox with new aftermarket "stock" airfilter.
As of now, I have #10 pilots, 92.5 mains and stock needles on #3, and I do have a set of .020" washers to get a half needle clip position if/as needed.

I haven't run it yet as it's in the final stages of it's post wreck resto. Another week or 2 :thumbup: :clap:

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1974 S1
Yamaha RZ350
...and a smelly Honda CB350-Four


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 Post subject: Re: Piped S2 jetting?
PostPosted: Sat Mar 17, 2012 1:19 am 
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Joined: Wed Jun 08, 2011 10:12 pm
Posts: 2169
thanks... im eventually going to 26mm keihin pwks. you might want to consider fitting an H1 ignition. makes it much better. Yes, theres one under the stock S2 points cover ;)
btw, those are the FIRST S series 'jims dencos' ever. :e11


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