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43 to 44 valves

Started by Norm, September 07, 2009, 06:52:57 AM

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Norm

September 07, 2009, 06:52:57 AM
For those of you who cut your own valve seats, is there enough meat in the older 900 series with the 43mm intake to recut it to 44mm (or 45), or do you have to install a new seat?

ducpainter

#1
September 07, 2009, 02:52:47 PM
Norm,

ducvet will know.

pm him.
"Once you accept that a child on the autistic spectrum experiences the world in
 a completely different way than you, you will be open to understand how that
 perspective
    is even more amazing than yours."
    To realize the value of nine  months:
    Ask a mother who gave birth to a stillborn.
"Don't piss off old people The older we get, the less 'Life in Prison' is a deterrent."


brad black

#2
September 08, 2009, 04:43:17 AM
we've done a few without issue.
Brad The Bike Boy

http://www.bikeboy.org

Norm

#3
September 08, 2009, 07:36:01 AM
Thanks. Brad: do you know if the stock seats are iron? I like to run Ti valves and would like to have copper or bronze seats.

Rock Store

#4
September 08, 2009, 01:50:38 PM
Valve seats are Steel,till Ducati came in with Bronze Beryllium with the SBK and 2 valver,starting with the 749r series. Use Bronze Beryllium for the exhaust ,Its composition draws out the heat from the TI valve & is softer for longevity,use Bronze for the intake side as the temperatures are a bit coller & this still cushes the Ti valve. later..RS

Norm

#5
September 09, 2009, 06:54:36 AM
It's nice to hear from you Rock Store, I wasn't sure you were around anymore.

Howie

#6
September 09, 2009, 08:00:05 AM
I hope we hear from Rock Store more often [thumbsup]

2001cromo

#7
September 09, 2009, 10:59:26 AM
Quote from: howie on September 09, 2009, 08:00:05 AM
I hope we hear from Rock Store more often [thumbsup]

Serious +1

Rock Store

#8
September 09, 2009, 10:52:31 PM
Thanks for the invite..later...RS
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