Which fcr?? Jetting??

[MrDavebrit]

 I recently bought FCR carb,  does someone know how to recognize which carb it is from the numbers? 35G2T106 ?

 It has a 170 Main and 50 pilot  not sure what needle is in there.  I'm at sea level and it's for a DRZ 400, does this seem a little rich bike runs ok but maybe be better with less rich setup??? 

[William1]

45 pilot

EMN needle

155 main, perhaps larger if you have a open pipe, a lot smaller if you did not do the 3X3.

[MrDavebrit]

I understand the recommended jets are 155-160 and 45 pilot but if mine are both too big why does the bike still run and ride great? 

[MrDavebrit]

Also it has a NCYR needle which I'm led to believe is a leaner needle, is this why it works ok with bigger main? 

[William1]

The bike is very tolerant over a wide range of jetting. You have to go very rich or very lean for obvious performance impairment.

[ohiodrz400sm]

I have experimented from 142 to 170 mains in my DRZ. The average person wouldn't​ know the difference. It takes a dyno or a very sensitive person to feel the optimal size.

[MrDavebrit]

Ah I see. Thanks guys I'm new to all this carb tuning