Help... 2012 EC 300 jetting settings...

[fr.yoav]

the powervalve works good, but stil can`t find the correct settings
Me 300 2012 (MJ 175 pilot 40 N1EF Needle 2 11/4 turn from fully closed at 0-700M max 25c - 35c)
so far i thray evry option with me sper kit

Any suggestions would be welcome

thanks
fr.yoav

[Jakobi]

The stock needle is too rich for your temps and altitude. Its very similar to where I live in Australia. Using 98RON fuel and 50:1 oil mix, 42 N3CJ#3 178 will work much much better.

Yamaha part number: Yamaha 4SR-14916-CJ-00 NEEDLE,(N3CJ) --- NEEDLE (N3CJ)
http://www.powersportsplus.com/parts...916-CJ-00.html

[brokenheadbrad]

i'm really impressed with your jetting knowledge Jak

[Jakobi]

Originally Posted by brokenheadbrad

i'm really impressed with your jetting knowledge Jak

Thanks Brad.

I'm definitely no expert in the matter though. I just found myself with a bike that wasn't running as well as it could be and was using more fuel than I deemed acceptable. From there I spent the time reading what I could to get an understanding of how everything worked, and then the time testing different settings to experience how they all work. I have a lot of notes on the topic and have also shared a lot of what worked and didn't work for me. If you asked what would work in a different bike I'd be back at square one. You should probably thank Gas Gas for making the carb so accessable

Cheers
Jake

[fr.yoav]

I ordered the needle, I'll send feedback after I install it,
It will work good for 95 octane?

[Jakobi]

Yep yep! Will work just fine

[fr.yoav]

I perform your recommended setting, the bike is respond very good, but i think that the engine running too hot
Sea level up to 600m (2000 fi )temp 20c-30c

Thx
fr.yoav

[Jakobi]

What makes you think its running hot? Discolouring the pipe? Blowing coolant? Pinging? Running weak under load? How does the plug look?

What throttle openings do you think its still lean? Try moving the needle one clip richer (lower on the needle) and then evaluating. If it feels a bit rich consider the N3EJ which is a half clip variation. This is assuming it feels lean between 1/4 and 3/4 throttle.

[fr.yoav]

smell of the engen


i will check the temp again .


Do you think that this setting will reduce fuel consumption ?

[Jakobi]

Can you smell coolant? Can you provide any more info? The spark plug should really tell you a bit of info, as will how the engine feels and responds. Try running it richer and if its an improvement you know you've gone the right way.

The needle settings I suggested will give much improved fuel economy over stock. Its all relative though so making it richer will use more fuel. Don't jet for fuel usage though. Jet for engine response and power.