SOHC.co.uk Forums > CB350/400

400F valve guides in a 350F

<< < (6/7) > >>

rosco:
Just to throw this one in  Just stripped my 1978 400/4 head for cleaning It only has seals on the inlet.  Has someone else been in there before me and left them off?????

Bryanj:
Rosco Yes and a numptie

royhall:
They haven't been left off, the non seal guide is not capable of taking a seal they are completely different.

Orcade-Ian:
You could well be correct Bryan with your reply to Rosco,
However what Roy and I have said is that there are guides which definitely have NO provision for an exhaust seal and I have heads with both types.  I suppose it’s possible that Honda R&D specially shaped the spring end of the early guides to prevent oil finding its way in.  Presumably, either it wasn’t worth the effort of two machining setups or it just simply didn’t work.
Roger Etcell, who occasionally still writes for Old Bike Mart may remember what actually happened - all a bit academic now, Roy just wants his bike to quit smoking (have you tried patches Roy 🙈)

Ian

royhall:
I may try hypnotism.

Sent from my Pixel 3a XL using Tapatalk

Navigation

[0] Message Index

[#] Next page

[*] Previous page