steve2286w
Well-Known Member
t was past my bedtime
steve2286w
Well-Known Member
Just listened to video on 1/4 Speed
I heard 36 Taps in 30 secs
72 in one minute At 1/4
=288 in one minute
Assume 500rpm tickover
then this about half tickover speed which points to one cam lobe/ tappet noise every 2 crank revs
I heard 36 Taps in 30 secs
72 in one minute At 1/4
=288 in one minute
Assume 500rpm tickover
then this about half tickover speed which points to one cam lobe/ tappet noise every 2 crank revs
Wildefalcon
Well-Known Member
It's a petrol, no pre combustion chambers.
steve2286w
Well-Known Member
It could be a flat spot on cam lobe or some wear in the bits above as in pic below
Round roller , the tappet guide steel ( this is located by bolts in block seen in second pic ) if bolt was loose it could move when not supposed to
The the brass sliding part where the bottom of push rod sits could be damaged
Are you sure no head leaks around cylinder head joint
I bought a new rocker from turners on my rebuild and that had discolouration , I think this will be due to the heat treatment for hardening the rocker
Round roller , the tappet guide steel ( this is located by bolts in block seen in second pic ) if bolt was loose it could move when not supposed to
The the brass sliding part where the bottom of push rod sits could be damaged
Are you sure no head leaks around cylinder head joint
I bought a new rocker from turners on my rebuild and that had discolouration , I think this will be due to the heat treatment for hardening the rocker
Not sure which bit you mean
Attachments
Wildefalcon
Well-Known Member
I wonder, could it be the rocker shaft itself in trouble? The series engine has a good strong pedestal for the rocker, but there are clamp bolts to tighten the shaft.
Pop the rocker cover off again, and check the 5 pedestals. Make sure the shaft isn't broken or loose.
Pop the rocker cover off again, and check the 5 pedestals. Make sure the shaft isn't broken or loose.
steve2286w
Well-Known Member
Depending how far you want to go the shaft could be dismantled carefully to check for wear
May be possible to detect smoothness of cams with finger on end of pushrod while rotating engine by hand
May be possible to detect smoothness of cams with finger on end of pushrod while rotating engine by hand
Wildefalcon
Well-Known Member
Interesting. Any photos? That's held on with a cylinder head bolt, which should be torqued to 70 ish feet pounds.
steve2286w
Well-Known Member
Have a search on here for tapping noise too
steve2286w
Well-Known Member
That’s comforting, did they say what was causing the noise problem
Its probably just a landrover thing
