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-   -   ttr600re running rich or lean? (https://www.horizonsunlimited.com/hubb/yamaha-tech/ttr600re-running-rich-or-lean-71873)

superfour1300 21 Aug 2013 22:39

ttr600re running rich or lean?
 
my 05 ttr600re since ive fitted a less restrictive silencer
when ridding hard on the road when I shut of the throttle and open it again the bike seems to lag..hesitate for a few seconds then its ok again..
airbox is standard..no mods with standard filter..jetting is factory standard..carb has never been removed in its life..i did a plug chop and plug seems whiteish..thinking of buying a sigma jet kit..
any suggestions...

*Touring Ted* 23 Aug 2013 23:53

A less restrictive exhaust usually makes the bike run a little lean..

However, bogging which clears is a tell tail sign of a rich mixture..

Isn't carburation fun ?? doh

Was it fine before the exhaust swap ??

jjrider 24 Aug 2013 00:39

I would definitely say it is lean, opening the throttle slams a bunch of air in with not enough gas till the main gets caught up(sort of). A white/ish plug is another lean indication. If you want, try raising the needle 2 grooves if possible, see if it gets better(this won't be the end all solution but will indicate mixture). A better intake is usually recomended to get the gain from the exhaust you paid for.

superfour1300 24 Aug 2013 12:33

it wasn't as bad with the standard exhaust silencer..
come the winter im stripping the bike as I want to repaint the frame possibly red with black motor..
I hear good reports about the sigma jetting kits...any of you guys use these?

1998-04 Yamaha TTR600 TT600R TTR 600 TT Custom Carburetor Carb Stage 1-3 Jet Kit | eBay

jjrider 24 Aug 2013 16:58

I use Dynajets kits but the Sigma should be just fine. It'll give you some options.

superfour1300 25 Aug 2013 21:57

filled the tank with super unleaded this evening and bike running a little better but will need bigger jets


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