10V head mod qustion

[Jay Rabe]

>The point is, if your going to rebuild the head, the
>40mm valves cost no more than the stock 38 mm. So the
>upgrade is a no brainer.

So, you put a 40mm valve in a 38mm seat?  If the 38mm seat is still in there
how will you improve flow ???  How will it seal correctly?  Seats are not
the easiest things to install, Nevermind bigger ones. it might be cheaper to
find a head w/ 40mm intakes than pay someone to cut in the new seats, then
you will have to port it to match the bigger seat.  Its more work than you'd
think.

Jay

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