Both of my Haynes' manuals gives a formula for calculating the correct valve shim for hot and cold engines.
T= Thickness of old shim
A= Valve clearance measured
N= Thickness of new shim required
If measured on a cold engine the formula is: N= T+(A-0.018 inch)
If measured on a hot engine the formula is: N= T+(A-0.016 inch)
The Haynes manual did not say anything more about what the measured clearance range should be.
In my Chilton's manual, although it doesn't give a precise formula it does say that valve clearance should be set between 0.014 to 0.016" for a cold engine and 0.016-0.018 inch for a hot engine (above 176 degrees)
My question is: Is this the correct formula to use that is in the Haynes manual? I used the cold formula when I computed the new valve thickness, and was wondering if the Bentley manual said the same thing for calculating valve shim thickness.
Thanks for any clarification as it is greatly needed!
T= Thickness of old shim
A= Valve clearance measured
N= Thickness of new shim required
If measured on a cold engine the formula is: N= T+(A-0.018 inch)
If measured on a hot engine the formula is: N= T+(A-0.016 inch)
The Haynes manual did not say anything more about what the measured clearance range should be.
In my Chilton's manual, although it doesn't give a precise formula it does say that valve clearance should be set between 0.014 to 0.016" for a cold engine and 0.016-0.018 inch for a hot engine (above 176 degrees)
My question is: Is this the correct formula to use that is in the Haynes manual? I used the cold formula when I computed the new valve thickness, and was wondering if the Bentley manual said the same thing for calculating valve shim thickness.
Thanks for any clarification as it is greatly needed!