Main Menu

New to Forum, Valve clearances way out of spec

Started by Shatrat, October 10, 2012, 08:14:11 AM

Previous topic - Next topic
Print
Go Down Pages 1 2
User actions

Shatrat

#15
October 13, 2012, 01:48:27 PM
I already ordered one opener shim and the closer measuring tool from emsduc yesterday.
I had just planned to order enough half rings to replace any broken ones.
Per the desmotimes manual, older retainers are work hardened and wear less than new ones.

ducpainter

#16
October 13, 2012, 06:49:31 PM
Quote from: Shatrat on October 13, 2012, 01:48:27 PM
I already ordered one opener shim and the closer measuring tool from emsduc yesterday.
I had just planned to order enough half rings to replace any broken ones.
Per the desmotimes manual, older retainers are work hardened and wear less than new ones.
That is true.

Make sure you put them back in in the same orientation....top/bottom.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Shatrat

#17
October 14, 2012, 12:47:22 PM
Well, I've run into something else that's got me confused.

When checking the loaded/unloaded gaps I get different results depending on whether or not the retaining clip has been installed that keeps the opener arm from sliding side to side.

I get tighter results with the clip installed. 
IE on the vertical intake I get .0015" with the clip installed but .004" with the clip removed.

The belts are off and I spun the cam all the way around trying to find the loosest position.

Everything I have seen has shown the clearances being checked with the clips still installed, so it seems like those are the values I should use.
But, Im confused as to why installing that clip would throw off the measurements at all, since it should only be restricting side by side motion.

If I put my finger under the rocker arm with the clip installed and pull up on the rocker arm, I can fit the larger feeler in without binding.
However, I haven't seen anyone measuring their clearance while lifting up on the rocker arm so that seems wrong as well.

I don't want to sand any more off the shim until I'm sure it's too tight.  Man I sure do love hydraulic lifters now.

ducpainter

#18
October 14, 2012, 04:02:25 PM
The clip changing the clearance is normal. I don't know why, but that's the way it is.

Keep sanding. [thumbsup]

"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Shatrat

#19
October 14, 2012, 05:05:46 PM
Ok, so ignore the clipless and/or lifted rocker clearance and use the smaller numbers?
I'll commence sanding tomorrow.

ducpainter

#20
October 14, 2012, 05:16:41 PM
Quote from: Shatrat on October 14, 2012, 05:05:46 PM
Ok, so ignore the clipless and/or lifted rocker clearance and use the smaller numbers?
I'll commence sanding tomorrow.
You want the correct feeler to enter easily and slide without bending/binding
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


Print
Go Up Pages 1 2
User actions