When valve clearance cannot be arrived at with thinnest shim ....

[chuck hahn]

Some do and some dont.

[Big Jay]

When doing the head rebuilds, upon disassembly, pick a valve that is in the middle of the shim range. Measure fron the tip of the valve to tjhe bottom of the shim bore where the base sits. Write that number down. After you finish your work, tip the valves all to that dimension. You will find that most are back in the middle of the shim range,

[ukjules]

That is a good idea .. but can you explain for me where you are measuring :
(I can see that as long as you take a valve in the middle range as long as you measure at the same points it will be ok but
where are you measuring ?

"Measure from the tip of the valve" -
to tjhe
" bottom of the shim bore where the base sits"

the total / overall length is just fine ?
(I attach a picture so we are signing from the same hymnsheet)

[chuck hahn]

Total length...."L"

[Fjbj40]

When doing the head rebuilds, upon disassembly, pick a valve that is in the middle of the shim range. Measure fron the tip of the valve to tjhe bottom of the shim bore where the base sits. Write that number down. After you finish your work, tip the valves all to that dimension. You will find that most are back in the middle of the shim range,

What I am interpreting is, measure from the tip of the valve, installed, to the bottom of the shim bucket bore, for a valve which has the mid range shim installed prior to disassembly. Measure the overall length of that valve, then machine all valves to that length, as in dimension "L", as chuck said.

is this what you mean Jay?

[ukjules]

Understood and thanks.

[qcktvr]

Hi again,
After seats have been cleaned up and valve faces reground it is unlikely that you can just make all of the valves the same overall length, that is the problem that you are struggling with now.
I believe that they should be measured individually, in their specific position, and then ground to be the same as one that is in the mid range of shim thicknesses. You should measure from any common machined face on the head.
In an earlier post I said:
I would expect Suzuki to give a dimension from the spring seat to the top of the valve stem as a reference for machine shops to adjust valve lengths after grinding valve seat and valve faces..
That is what I was trying to say, and I think that is what the previous poster was also saying?
My apologies if I am wrong, again; at least this is not a panic job..
Regards to all

[Fjbj40]

Hi again,
After seats have been cleaned up and valve faces reground it is unlikely that you can just make all of the valves the same overall length, that is the problem that you are struggling with now.
I believe that they should be measured individually, in their specific position, and then ground to be the same as one that is in the mid range of shim thicknesses. You should measure from any common machined face on the head.
In an earlier post I said:
I would expect Suzuki to give a dimension from the spring seat to the top of the valve stem as a reference for machine shops to adjust valve lengths after grinding valve seat and valve faces..
That is what I was trying to say, and I think that is what the previous poster was also saying?
My apologies if I am wrong, again; at least this is not a panic job..
Regards to all

I agree. My post was my interpretation of what Big Jay posted.

After the seats are machined then valve height should be checked and valves machined to bring into mid shim range. However, if there was extreme stretch then the valve would need replacement because you would cut below the top of the keepers.

Hope Big Jay chimes in here.