I am going to try my best to make this THE LAST post on jetting as so far I have taken up the bandwidth limit for this site on my boring jetting posts alone.
so here goes:
I tried my incredibly lean settings of:
top clip on needle jet.
380 main
35 pilot and two and half turns on air screw.
32:1 fuel mix
the bike was a little better however the brand new BR9EIX plug i put in for the day started to foul up. I took it out at the end of the day and saw it was pretty black although during my riding it perfromed reasonably well and I wouldn't have known it was fouling if i hadn't have taken it out.
However, i noticed that if I reved the bike very quickly (short sharp revs) it goes all boggy a kind of bwoooooaaaaaaaag noise until i stop reving when it then comes back to normal. :ugg:
I have been told that this usually means too lean somewhere on the jetting but how can this be if my plug is still starting to foul up.
It would make more sense to me obviously if it was too lean as the jetting is as lean as you can pretty much get but still the plug is going black.
It can't be my riding because even thought the track was a very tight, slow track I always keep it in the high revs even if that means me being in 1st gear for much part of the track (basically it is only very occasionaly when I am in the bottom end of the revs)
So, once again, I am still lost.
I am wondering if it is perhaps unburnt oil in the chamber. one thing I haven't done after break in is take the cylinder head off and give it a good clean out. I noticed quite a few times that the grey pipe which comes out of the front of the engine where the cylinder is was spewing out a bit of thick black oil. Not lots but whenever i stopped the bike for 20 mins i would notice there was a couple or three big droplets of black oil coming out.
could that signify anything or is that normal.
would giveing the chamber a good clean out help things or sticking in the 8 plug i bought to really burn it all off.
any ideas?
(once again, I am sorry for these mind numbing jetting questions and all I can say is that i have been overwhelmed by the replies I ahve had from previous posts so far, to take time out to try and answer my questions is massively appreciated and if it wasn't for this site and you guys i wouldn't have a bike that runs. Thankyou) :cool:
so here goes:
I tried my incredibly lean settings of:
top clip on needle jet.
380 main
35 pilot and two and half turns on air screw.
32:1 fuel mix
the bike was a little better however the brand new BR9EIX plug i put in for the day started to foul up. I took it out at the end of the day and saw it was pretty black although during my riding it perfromed reasonably well and I wouldn't have known it was fouling if i hadn't have taken it out.
However, i noticed that if I reved the bike very quickly (short sharp revs) it goes all boggy a kind of bwoooooaaaaaaaag noise until i stop reving when it then comes back to normal. :ugg:
I have been told that this usually means too lean somewhere on the jetting but how can this be if my plug is still starting to foul up.
It would make more sense to me obviously if it was too lean as the jetting is as lean as you can pretty much get but still the plug is going black.
It can't be my riding because even thought the track was a very tight, slow track I always keep it in the high revs even if that means me being in 1st gear for much part of the track (basically it is only very occasionaly when I am in the bottom end of the revs)
So, once again, I am still lost.
I am wondering if it is perhaps unburnt oil in the chamber. one thing I haven't done after break in is take the cylinder head off and give it a good clean out. I noticed quite a few times that the grey pipe which comes out of the front of the engine where the cylinder is was spewing out a bit of thick black oil. Not lots but whenever i stopped the bike for 20 mins i would notice there was a couple or three big droplets of black oil coming out.
could that signify anything or is that normal.
would giveing the chamber a good clean out help things or sticking in the 8 plug i bought to really burn it all off.
any ideas?
(once again, I am sorry for these mind numbing jetting questions and all I can say is that i have been overwhelmed by the replies I ahve had from previous posts so far, to take time out to try and answer my questions is massively appreciated and if it wasn't for this site and you guys i wouldn't have a bike that runs. Thankyou) :cool: