Does a 38 Pilot Jet sound too lean ?

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ihatefalling
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Does a 38 Pilot Jet sound too lean ?

Post by ihatefalling »

I hate to admit it but, I have never completely gone through the jetting exercise.

Finally did ! Man what a difference. My bike is running tight ! And FAST.

It had a 42 PJ in it. When I adjusted the air screw, it seemed like I had to get it about 5 turns out to get to the top of the idle. The air screw was about to fall out !

I dropped it to a 38 and I'm pretty sure it's running best at about 1.5 turns out.

I've read a bunch of jetting posts here and it didn't seem like a lot of ya'll are running 38 PJs. So I'm wondering.

220 with RB carb and head......thx
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Slick_Nick
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Post by Slick_Nick »

I run a 38. Mind you my city is at 3500' already and it only gets higher where I ride
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Post by SS109 »

Heh, I have a 38 in the 250! :mrgreen:
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Post by kdx633 »

I too run a 38 in my 220 with the RB mods,woods pipe,and v-force reeds.I normally ride 750' to 2000' asl.Thinking i was doing something incorrectly I messed around with needles and mains only to come back to the 38.Using ethanol free fuel helped clear up some confusion as well as make the results repeatable.
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Post by KarlP »

I used a 38 pilot in my 220, RB carb and head, 607 reeds.

I think I've also used a 40.

Sea level, real hot down here most of the time.
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Post by jbowens2401 »

i think ron sends the carb back with the 38 as an optional pj for our area. i run 38 in the summer and 40 in the winter
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ihatefalling
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Post by ihatefalling »

OK....thanks for the feedback guys.

Guess I'm not used to my bike hitting so hard so I was worried about it being too lean.

:supz:
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Post by Slick_Nick »

>|<>QBB<
ihatefalling wrote:OK....thanks for the feedback guys.

Guess I'm not used to my bike hitting so hard so I was worried about it being too lean.

:supz:
You'll know if the pilot is too lean. Anything 1/4 throttle and below it will bog out. Honestly, try a 40 in there and see if it's any "crisper."
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ihatefalling
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Post by ihatefalling »

Sure can.

Am I crazy or do you HAVE to take the bowl off to get to the PJ ?
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Post by Slick_Nick »

>|<>QBB<
ihatefalling wrote:Sure can.

Am I crazy or do you HAVE to take the bowl off to get to the PJ ?
Main you can do through the drain hole, PJ needs to have the bowl come off.
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ihatefalling
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Post by ihatefalling »

cool.....thx
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Post by fuzzy »

The bigger bore lends itself to smaller (than what you see as 200 jetting) pilot sometimes...esp if this is the stock 33mm.
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Post by Mr. Wibbens »

I run a 38 in my 200
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