Vlad
XS400 Enthusiast
I'm pretty sure this isn't what my pilot jets are suppose to look like. They look a lot like main jets to me. Anyone else?
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Is it just me or does this look like an odd pilot jet
- Thread starter Vlad
- Start date
Vlad
XS400 Enthusiast
Isn't the pilot jet suppose to be a 42.5 kinda like this?
Yup; that's the pilot jet you just linked above.
What you have there is the pilot AIR jet. It is confusing because on the bs34s they use a small round main jet AS a pilot AIR jet.
The terms are also a bit, well, silly. It goes here:
Bottom left, and it should be a 170 (printed on the face).
What you have there is the pilot AIR jet. It is confusing because on the bs34s they use a small round main jet AS a pilot AIR jet.
The terms are also a bit, well, silly. It goes here:
Bottom left, and it should be a 170 (printed on the face).
Vlad
XS400 Enthusiast
So if you were rejetting would that be the jet to go up a size or would it be the one in the bowl?
BS34s are pretty sweet because our pilot AIR jets are removable. If you're jetting you want to INCREASE your pilot jet for richer idle or you can decrease your pilot AIR jet to get a richer idle. It is probably safe to ignore the pilot AIR jet and simply get a larger pilot jet. From other users on here 1 size up usually works; I have 1 and 2 sizes up on order right now.
Just to confirm, yes, the one in the bowl (42.5) is the one you increase; if you increased the one on the face you'd be making your mixture leaner.
Just to confirm, yes, the one in the bowl (42.5) is the one you increase; if you increased the one on the face you'd be making your mixture leaner.
Vlad
XS400 Enthusiast
ok I got you, this is making sense now. Only thing now is that the largest I can find anywhere is 160. What I've had in since I've had the bike is a 155. The only reason I've even really considering changing it out is because my engine ate the one on the left side.
If you replace the 170s with 160s you souldn't have a problem; you'll be a tad richer at idle (compared to stock 170, but a fraction leaner than your previous 155s) and low rpms; this kind of small variation can easily be tuned out with the idle air mixture screws. I think the general consensus is that these bikes run on the leaner side in stock form anyway. I also have the 160s on order myself, but bikebandit actually has some in other oddball sizes. The only downside is that bikebandit forces you to buy jets in 4 packs.
