Valve seat cutter sizes

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Cuda416

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Question for those who do their own valve work. What are the correct cutter diameters to get? Looking at the neway guide, I get ...

Intake: 48.77+3.18 mm = ~52mm ~ 2.05 in
Exhaust: 40.64 + 3.175 = ~44mm ~ 1.73 in

Do those seem about right?
 
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