Posted by Jeff Broom
on 12/4/2009, 6:45 pm, in reply to "Re: Pete Finn"
82.32.145.240
Thanks Pete, I have had the engine for about 2 years, bought as so say reconditioned its very clean, gaskets look new and obviously has been worked on, ( I have never had it running yet) the pistons look ok and cannot see any damage anywhere, just with a test with petrol it poured through all ex valves, so maybe was assembled wrong whoever done it, but I will thoroughly check all parts involved.
Regards Jeff.
--Previous Message--
: Jeff,
:
: Sounds like your CAMCHAIN TENSIONER has
: failed and allowed the camchain to jump the
: cam sprockets......allowing your valve
: timing to go all to hell, or someone did not
: put the cams back into the head correctly.
:
: You will need to find 6 replacement
: valves....I suggest new.....and grind them
: into the existing seats.
:
: I would then definitly buy a ZZR1100
: Camchain Tensioner before rebuilding and use
: that.
:
: The only other damage you could have done is
: to the CROWN of your pistons. Look at all of
: these with a magnifying glass for holes or
: scars, as these will get white hot when
: running and cause a siezure. The piston
: crowns must be very smooth and undamaged.
: Depending on the speed you were doing when
: the damage occured, you may have damaged a
: small end or bent a conrod. The only way to
: check this is visibly, so it would mean
: cylinder block removal too.
:
: Also check the area where the valves
: contacted the heads surface itself, as if
: thats scarred, you need a replacement head.
:
: Hope that helps ?
:
: Pete F
: Up North
:
:
:
: --Previous Message--
: Hi Pete, took head off a z1300 engine as it
: was reading 0 comp on all 6, found all 6 ex
: valves & 1 in valve sticking, what cause
: this & how do i sort it, should i be
: looking at anything else. regards Jeff
:
:
:
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