YZ Timing and Valve Check
Posted October 31, 2001 - 10:29 PM
Posted November 01, 2001 - 11:06 AM
Posted November 01, 2001 - 11:17 AM
While you are at it you should check your valve clearance. Just be very very careful when you remove the cam - there is a half moon circlip that can fall into the engine.
Also this site has great instructions/pictures for doing this: http://www.400thumpe...00/yztiming.htm
Posted November 01, 2001 - 04:33 PM
I realize that TDC still needs to be checked by the flywheel. Changing to YZ timing would rotate the exhaust cam lobes. Would this change the measurement to check the valves on the exhaust side. Or is the rotation so slight and the fact that the measurement is taken under the round portion of the lobe the specs remain the same?
I will give B.D. a call.
I have not made any jetting changes since the BK mod as I was running pretty rich before it. The bike is in the basement for the winter. I was able to start it up though. It started much eaiser but when I wacked the throttle the bike would die. It may be that it wasn't warmed up enough. The house was starting to fill up from the exhaust. If I get all my projects done on it. If my son's football team ever looses ending his season and giving me some time w/good weather. I will take it out for some real tests.
[ November 01, 2001: Message edited by: finglan ]
Posted November 01, 2001 - 04:37 PM
Posted November 02, 2001 - 04:24 AM
I had a heck of a time getting the chain off of the cam to rotate it ( one tooth clock wise w/12 pins between the punch marks )
Even w/the chain tensioner off there was not allot of slack in the chain.
Posted November 02, 2001 - 04:30 AM
Take care, please work patiently.
Posted November 02, 2001 - 02:28 PM
Just curious, what will happen if you overtighten the cam bolts??
Mu toruqe wrench does not go below 10ft/lb and the spec calles for 7.2.
I have a tendancy to overtighten things to point shearing the bolts.
Posted November 02, 2001 - 03:20 PM
If your T-wrench only goes down to ten ft lbs it is time to get an inch pounder...
Posted November 02, 2001 - 06:53 PM