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By PeteF
#40572
It's a bit pointless not grinding the valves if you have the head off so you will need a valve compressor. A torque wrench is pretty handy replacing the head as well.
By zippy
#40574
Might be an idea to invest in a set of the thick headbolt washers from off here while the had is off, as the originals have a habit of squishing and galling in the nut bores, making the head difficult to remove - and there aren't many places you can safely tap a bullet head without fins flying off...
User avatar
By Scalyback
#40576

Thick headbolt washers?



Ok, and thanks for all the advice so far guys.
By zippy
#40577
Yes, thicker and harder I think. Anyway they don't deform and jam the head.I got a set for mine after it took ages to part the head because the washers had all splayed out sideways.
By zippy
#40578
These be them.. Part No 90123

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It's a set of 6 . the 2 external ones are there too.
User avatar
By Leon Novello
#40579
4895 RPM is ok for riding, but NOT for revving with no load on the engine as this can cause damage. Blipping the throttle constantly whilst the bike is stationary will always strain internal parts as they are flying around in there with no load on them. But you might be lucky, any damage might not manifest itself for years, if at all.
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By Scalyback
#40580

Thanks, I got the washers and a valve spring compressor ordered!




Will borrow a torque wrench, mine is abroad!
By PO51UHD
#40596
RPM app?

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