2 stroke Stella, exhaust and jetting
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- Joined: Thu Mar 31, 2016 7:05 am
- Location: Phoenix, AZ
2 stroke Stella, exhaust and jetting
Hi all. New here with a 2009 Stella, completely stock. I have owned it for just over 2 years, and it has just over 5000 miles on it. I want to install a Sito+ exhaust for a little more sound and to get rid of the cat con. I live in Phoenix, AZ where it is HOT. I believe the carb is jetted a bit lean already. The altitude is 1200 feet. What would be a good jet combination for an otherwise stock scooter with the Sito+ exhaust? I seem to be having trouble finding any advice about this. It wouldn't hurt if the jetting were just slightly on the rich side. I'm not looking for performance. I run my 4 stroke bikes a bit rich to help protect them from the 115 degree heat. I would appreciate any suggestions. Thanks, Jeff.
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- Joined: Thu Mar 31, 2016 7:05 am
- Location: Phoenix, AZ
- az_slynch
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Bald John was based out of Tucson when he worked up that jetting. We're at 2500ft, so it'll be pretty close for you.2strokeluvr wrote:Thanks. Already been doing that. Found a little controversy. I just want some place to start that will not be lean. If it is too rich, I can always go leaner. Seems a lot safer than starting out too lean. Jeff
I jetted my P for Tucson and she runs fine in Phoenix.
At what point does a hobby become an addiction? I'm uncertain, but after the twelfth scooter, it sorta feels like the latter...
Seriously...I've lost count...
Seven mopeds ...that's still manageable...
Seriously...I've lost count...
Seven mopeds ...that's still manageable...
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When I swapped out my 09 Stella's stock exhaust and filter, my mid-range temps rose even after I upjetted the main. I had to increase the stock 55/160 (2.9) SI Pilot/idle jet to richer 52/140 (2.7). Note that larger SI#s are leaner, lower ones richer. Resulted in Mid-range temps being restored to stock levels per CHT readings.