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#Post#: 97954--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Finmeg Date: June 13, 2015, 2:01 am
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The hi/low lever in my 80" was so loose it was catching on the
UJ I cured it by making two 'top hat' type brass bushes for the
pivot which made the pin a good fit & filled the gaps either
side of the lever, it feels probably better than new now!
#Post#: 97960--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Gozo_Joseph Date: June 13, 2015, 7:36 am
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:giddy:
vibration gone - well short 10 mile drive and not present. i am
catching on different and new squeals that were hidden by that
vibration :)
it was the rubber damper for the timing chain. it wore off 3mm
of rubber coat plus slit 3 groves in its steel each 2mm deep no
wonder it was making that annoying rattle/vibration at idle.
pressure drops and tensioner eases off letting the chain loosen
up and vibrate i hope it did not disturb the timing.
joseph
#Post#: 97965--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: kev Date: June 13, 2015, 11:31 am
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Glad it's sorted. :thumbs:
#Post#: 97988--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Gozo_Joseph Date: June 14, 2015, 6:31 am
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Dmmy spit
engine again sounds lovely until it reaches running temps.
(bottom end of the N) then a new tap appears. it is like a metal
to metal sound. like rattle. today i stopped at a military club
meet and one guy has several land rovers and he straight away
said it might be a tappet after probing at it with a long screw
driver.
at home loosened injector pipes while hot and on each one the
engine started to struggle so they are fine?
took a 3 foot long 10mm rod and started probing myself with it
against my ear. injector bodies made the zik zik sound on one
instance i noticed the clear sound of the valve gear when placed
near the temp. sender part of the head. i placed it almost every
where around the engine and the only noisy/rattly thing was the
distributor pump. but the sound i could pick was more like a
continuous rattle rather then then metal to metal noise.
:(
i know i shouldnot be obsessed cos it is not healthy at all but
i hate to hear this newly discovered sound.
joseph
#Post#: 97989--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Serious Series Date: June 14, 2015, 7:49 am
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Take the rocker cover off with engine warm puts some rags around
the edges of head and start engine a little oil will splash
about.
Get a thin feeler gauge and slide it between each rocker and
valve in turn to see if you can find one that is noisy , might
be a bit of wear in rocker face which will not show up when your
setting tappets.[ie the thicker gauge spans the wear section and
masks it.]
#Post#: 97990--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Serious Series Date: June 14, 2015, 7:51 am
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Take the rocker cover off with engine warm puts some rags around
the edges of head and start engine a little oil will splash
about.
Get a thin feeler gauge[preferably an old set as it will get
dented] and slide it between each rocker and valve in turn to
see if you can find one that is noisy , might be a bit of wear
in rocker face which will not show up when your setting
tappets.[ie the thicker gauge spans the wear section and masks
it.]
#Post#: 98054--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Gozo_Joseph Date: June 18, 2015, 12:41 pm
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hello guys
so after four days of fettling about. managed to prepare the
newish imperial 2.25 head and lay it down on the 5main bearing
block. parts of the same age as the head are pushrods, rocker
assembly new and no wear at bottom and rather tight on the
rocker shaft. new valves but old springs :( since the new ones
installed on head were single items and dont know if they are
good items or not. :\
new composite gasket and reconditioned injectors, new fuel
filter new lift pump - diesel item
start up and runs not that bad. sounds like misfires and emits a
bit of white puffs but when warmed up (just beyond the white
patch on the dial) the misfires and white puffs vanish but at
accelleration some exhaust is generated. grey/white. but did not
over rev since it is sort of a small rebuild.
on some other forums or this one i forgot i came across
possibilty that the followers in cam are causing the noise?
Valve no7 is a bit noisy - does click a bit when rotating the
engine for valve adjustment. when valve is climbing up the
rocker kind of springs back. every two upward strokes it clicks
once only. cant explain the pattern well sorry. on engine
running i could not hear funny noises or scary noises from the
inlet port of manifold - with no hose on.
but that small vibrating noise is still there. only thing to
replace now is distributor pump. and perhaps skew gear? but
where on earth will i get it on time now?
joseph
#Post#: 98204--------------------------------------------------
Re: Annoying vibrating/fine tapping - hotspots?
By: Gozo_Joseph Date: June 29, 2015, 6:54 am
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After unbolting around 70% of the motor some parts twice in a
week and upsetting a bit the valve timing with new chain fitment
(slightly retarded by 2 or 3 degrees.) i eliminated the problem!
it was none other than oil pump. that would start rattling at
hot oil temperatures. yestreday gave it a nice hard drive around
the island - two hours including lots of stop and goes and hill
climbs (oil cooler stat fully open too :))
and oil pressure always above 40 even at idle (20/50 in there
but anyhow)
The gears on the old pump were out of tellerance badly grooved
above the alu gear too. new imitation part i think but well as
long as pressure is up for the time being i am happy especially
now that rattle is gone !!! :D
joseph
now then, lets focus on the other rattles rofl
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