I just tried to measure my valves in my 2013 103" TC stock heads without removing them from the heads and come up with a 1.90/1.61.. Is this correct for Stock heads? Thanks..

 

No

 

Can you state the stock size please??

 

1.8 1.575

 

Are you sure they're stock? Cuz1.90 and 1.615 are actual valve sizes for those heads.

 

No they are not..

 

I always sent my heads out and do not have the ability to machine.. When measuring a valve diameter, where to you actually take it.. Do you measure the diameter at the margin?

 

Yes at the margin.. The sizes you state are pretty standard oversized valves for those heads.

 

That's what I said. I asked if he was sure the heads were stock because those are actual valve sizes that can be used in those heads.

 

Not sure I understand. If you were intending to say "oversized valves for those heads" It would have made more cents.