Valve Adjustment Tolerance - Consensus?
#1
Valve Adjustment Tolerance - Consensus?
Specs are: .006 Intake - .012 Exhaust
2 of my Intakes are .005
1 of my Exhausts is .011
The rest are all perfect.
Would you take the time to get them perfect, or leave them?
The bike has like 34k miles on it
James
2 of my Intakes are .005
1 of my Exhausts is .011
The rest are all perfect.
Would you take the time to get them perfect, or leave them?
The bike has like 34k miles on it
James
#5
If your confident that the measurement that you have taken is accurate, as you know, are just at the spec limit. The clearance shrinks with wear. Are you thinking of opening the in spec valves?
I would, because of my ocd, make them all the same one direction or the other. What else have you got to do when it's too cold to ride?
Wouldn't a bigger gap retard the valve timing? and if so does .001mm really make any difference in torque curve?
Curious as well.
I would, because of my ocd, make them all the same one direction or the other. What else have you got to do when it's too cold to ride?
Wouldn't a bigger gap retard the valve timing? and if so does .001mm really make any difference in torque curve?
Curious as well.
Last edited by xeris; 12-16-2014 at 10:21 AM. Reason: addition
#6
What else? I'm powdercoating, polishing, changing rear brake master cylinders, changing to stainless fasteners, removing thermostat housing, changing coolant tanks, removing carb heater lines.... I'm not really that busy....
LOL
I'd like to know more about putting them all to the loose end of the spec....
James
LOL
I'd like to know more about putting them all to the loose end of the spec....
James
#8
What else? I'm powdercoating, polishing, changing rear brake master cylinders, changing to stainless fasteners, removing thermostat housing, changing coolant tanks, removing carb heater lines.... I'm not really that busy....
LOL
I'd like to know more about putting them all to the loose end of the spec....
James
LOL
I'd like to know more about putting them all to the loose end of the spec....
James
#12
The exhaust is 0.011".
Each of these measurements are 0.001" under what they are supposed to be which is 0.006". This does fit within the tolerance of + or - 0.001" just. But seeing as you are this far in I would change the shims.
The shims go up in sizes of 0.025mm which equates to 0.001" or 0.0009" to be precise. So you would have the option of going down by either one or two shim sizes. One size down would make the intakes 0.006" and the exhaust 0.012". Two sizes down would make for 0.007" for the intakes and 0.013" for the exhaust which would mean you would not then have to change the shims for a long time.
#13
Oh i realize what happened, i said two intakes are .005, and the rest are perfect (meanijg .006, so in my mind i gave two different measurements.
Anyone know more info about hawk's theory of setting them all on the loose side of the spec to get more power in a certain rpm range?
Thanks for the comments so far!
James
Anyone know more info about hawk's theory of setting them all on the loose side of the spec to get more power in a certain rpm range?
Thanks for the comments so far!
James
#15
I faced having one valve .001 too tight when I last did a check. I took the cam out and changed the shim to get the correct tolerance. If you are not going to do something about it, why bother to check? Just keep riding until something fails or you loose compression.
While you're at it, quit changing your oil. That's just preventative maintenance too.
All the other things your are doing require effort but they don't help the longevity of your bike. Get that cam out!
While you're at it, quit changing your oil. That's just preventative maintenance too.
All the other things your are doing require effort but they don't help the longevity of your bike. Get that cam out!
Thread
Thread Starter
Forum
Replies
Last Post
barncat
Modifications - Performance
136
09-15-2013 09:21 PM
CentralCoaster
Technical Discussion
14
05-16-2009 05:51 AM
AZZKIKER
Technical Discussion
4
03-21-2006 09:43 PM