10V head mod qustion (seat)

[JShadzi at aol.com]

NO, the 40mm valve requires a new, bigger seat in the 38mm head
Javad


<< 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. >>