Timing problem???

[wence]

Riding last week we were about 800 to 1000 ft above sea level (maybe), I did not re jet but jetting seemed ok as weather was cooler than normal.
A mate rode the bike and happened to have a go where there was a lot of flowing corners and managed to get high in the revs in top gear on the summer setting.
While doing this the motor started pinging .
A good mate said this was a timing problem as on the rain setting it was ok, which it was.
My question ( without checking), is whether or not the timing is adjustable and whether or not this is trhe problem.
Has anyone had the same problem?
Cheers Mark

 

[gasgasman]

Mine would do the same thing.

Ron @ RB-Designs advised me to go to a bigger main jet.
I had a 180 main.
Went to a 182 and the pinging went away

 

[wence]

OK,
Thanks for that I will try it Gas gas man.
I too have a 180 main.
Cheers Mark

 

[wence]

Also, When I was riding at about 1/3rd throttle and cracked it wide open it would bog or die until I wound it back and fed it on slowly.
Same prob or not, seemed like it was almost too rich( like riding with choke on).
I will get a jetting kit anyway as I want to have a bit of a play but am still interested to know whether the timing is adjustable or not.
Thanks again guys,
Mark

 

[jostby]

yes, the stator plate has elongated holes to adjust the timing. You might try moving it the same as the crank rotation a small bit in order to retard the timing. Let us know the result as I have been wanting to do it to my bike (minor pinging when really hot and being worked hard) but have been too lazy to pull the flywheel to try it.

 

[iancp5]

Good luck if you can adjust it on the stator plate. I tried this on mine and could only get about a 2 deg of movement in retard. Forget what stopped it now. There was a special elongated washer that I had to remove to get any movement.

 

[wence]

So what did you end up doing?

 

[iancp5]

So what did you end up doing?

Retarded by 2 deg only!
To get more would've required drilling the casings or some elaborate fabrication. But I wasn't doing it to stop pinking, I just wanted to soften the response. You should check yours, mine was an 03 motor - yours may be different.

 

[wence]

I will mate, thanks for the heads up though.
Cheers Mark