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David,
Thank you. Yes sounds quite feasible; will check and report backrg
----- Original Message -----
From: David Nock <healeydoc@gmail.com>
To: Roger Grace <roggrace@telus.net>, 'healeylist' <healeys@autox.team.net>
Sent: Thu, 20 Aug 2020 12:47:51 -0600 (MDT)
Subject: Re: [Healeys] Mystery noise
body {height: 100%; color:#000000; font-size:12pt;
font-family:arial,helvetica,sans-serif;}Drive shaft hitting the handbrake cable
when the car is jacked up. Probably
will go away when sitting on the ground. David
Nock
healeydoc@sbcglobal.net
209 948
8767
www.britishcarspecialists.com
Help us have our Founder Norman
Nock inducteed into the
British Sportscar Hall of Fame, You can vote for
your favorites
by visiting the site
at.
www.britishsportscarhalloffame.org
From:Roger Grace via HealeysSent: Thursday, August 20, 2020 10:27
AMTo:'healeylist'Subject: [Healeys] Mystery noise AH people - fighting a noise
in my BJ8 that may or may not be
serious.Reluctant to tear out the tranny unnecessarily and then to find it was
something simple !
Notice it at low speed (probably exists at driving speed but too much wind
and engine
noise) if shift to neutral and cut ignition to minimize engine
and exhaust noise.Noise is pulsating - like a tire with a bad spot but seems to
be at
prop shaft speed. At first thought that it was at wheel speed and from R
side.So changed out the R wheel bearing.No improvement Then while looking below
noted that universals had some play.So changed out both universals.Rear brakes
not dragging and no binding of wheels.No improvement. Did listening on hoist
with others listening too. Consensus was that there
was a noise at rear OD area as well as the pulsating one. So pulled annulus in
situ and replaced both rear bearings. Quieter but
still the pulsating noise while coasting in N. Sound file enclosed is a road
test from about 15 MPH then shift to N and
cut engine. Tunnel cover off.
Able to replicate noise with engine on axle stands but not by turning a
rear wheel by hand or with an e motor.
Noise does appear to come from transmission.
To verify is not diff removed one of the rear seats and noise doesn't
appear to be coming from diff area.
Disconnecting prop shaft to isolate diff not possible as need the inertia
of the rear wheels to produce the pulsing. About 5k miles ago I changed out the
larger OD front bearing (sourced from
Moss ... ?) in the OD.OD works fine and transmission shifts and works OK
without unusual
noises. The pulsating/cyclical nature of the noise baffles me and not
consistent
with a bearing failure ? Given that it occurs in neutral with no gears meshing
it surely is not a
bad gear tooth etc.
OD not engaged so it is locked so not likely there.
Removed gearbox top cover and did inspection - nothing obvious.
So to my mind this only leaves the GB rear bearing ?Or maybe a broken circlip
or thrust washer and probably on main shaft
external to gearbox ?
or half shaft ?
Any comments/thoughts appreciated from the more experienced
among us.
Tkxrg
_______________________________________________
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<html><head><style> body {height: 100%; color:#000000; font-size:12pt; font=
-family:arial,helvetica,sans-serif;}</style></head><body><div>David,<br></d=
iv><div>Thank you. Yes sounds quite feasible; will check and report back<br=
data-mce-bogus=3D"1"></div><div>rg<br data-mce-bogus=3D"1"></div><div><br>=
</div><div>----- Original Message -----<br>From: David Nock <healeydoc@g=
mail.com><br>To: Roger Grace <roggrace@telus.net>, 'healeylist' &l=
t;healeys@autox.team.net><br>Sent: Thu, 20 Aug 2020 12:47:51 -0600 (MDT)=
<br>Subject: Re: [Healeys] Mystery noise<br></div><div><br></div><style> bo=
dy {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetic=
a,sans-serif;}</style><div dir=3D"ltr"><div style=3D"font-size: 12pt; font-=
family: 'Century'; color: #000000;" data-mce-style=3D"font-size: 12pt; font=
-family: 'Century'; color: #000000;"><div>Drive shaft hitting the handbrake=
cable when the car is jacked up. Probably <br>will go away when sitting on=
the ground.</div><div> </div><div> </div><div style=3D"font-size=
: 12pt; font-family: 'Century'; color: #000000;" data-mce-style=3D"font-siz=
e: 12pt; font-family: 'Century'; color: #000000;">David <br>Nock<br>healeyd=
oc@sbcglobal.net<br>209 948 <br>8767<br>www.britishcarspecialists.com<br><d=
iv><br></div>Help us have our Founder Norman <br>Nock inducteed into the <b=
r>British Sportscar Hall of Fame, You can vote for <br>your favorites <br>b=
y visiting the site <br>at.<br>www.britishsportscarhalloffame.org<br></div>=
<div style=3D"font-size: small; text-decoration: none; font-family: 'Calibr=
i'; font-weight: normal; color: #000000; font-style: normal; display: inlin=
e;" data-mce-style=3D"font-size: small; text-decoration: none; font-family:=
'Calibri'; font-weight: normal; color: #000000; font-style: normal; displa=
y: inline;"><div style=3D"font: 10pt tahoma;" data-mce-style=3D"font: 10pt =
tahoma;"><div> </div><div style=3D"background: #f5f5f5;" data-mce-styl=
e=3D"background: #f5f5f5;"><div style=3D"font-color: black;" data-mce-style=
=3D"font-color: black;"><b>From:</b><a title=3D"healeys@autox.team.net">Rog=
er Grace via Healeys</a><br data-mce-bogus=3D"1"></div><div><b>Sent:</b> Th=
ursday, August 20, 2020 10:27 AM</div><div><b>To:</b><a title=3D"healeys@au=
tox.team.net">'healeylist'</a><br data-mce-bogus=3D"1"></div><div><b>Subjec=
t:</b> [Healeys] Mystery noise</div></div></div><div> </div></div><div=
style=3D"font-size: small; text-decoration: none; font-family: 'Calibri'; =
font-weight: normal; color: #000000; font-style: normal; display: inline;" =
data-mce-style=3D"font-size: small; text-decoration: none; font-family: 'Ca=
libri'; font-weight: normal; color: #000000; font-style: normal; display: i=
nline;"><div><div>AH people - fighting a noise in my BJ8 that may or may no=
t be <br>serious.</div><div>Reluctant to tear out the tranny unnecessarily =
and then to find it was <br>something simple !<br></div><div> </div><d=
iv>Notice it at low speed (probably exists at driving speed but too much wi=
nd <br>and engine <br>noise) if shift to neutral and cut ignition to minimi=
ze engine <br>and exhaust noise.</div><div>Noise is pulsating - like a tire=
with a bad spot but seems to be at <br><div><br></div>prop shaft speed.</d=
iv><div> </div><div>At first thought that it was at wheel speed and fr=
om R side.</div><div>So changed out the R wheel bearing.</div><div>No impro=
vement</div><div> </div><div>Then while looking below noted that unive=
rsals had some play.</div><div>So changed out both universals.</div><div>Re=
ar brakes not dragging and no binding of wheels.</div><div>No improvement.<=
/div><div> </div><div>Did listening on hoist with others listening too=
. Consensus was that there <br>was a noise at rear OD area as well as the p=
ulsating one.</div><div> </div><div>So pulled annulus in situ and repl=
aced both rear bearings. Quieter but <br>still the pulsating noise while co=
asting in N.</div><div> </div><div>Sound file enclosed is a road test =
from about 15 MPH then shift to N and <br>cut engine. Tunnel cover off.<br>=
</div><div> </div><div>Able to replicate noise with engine on axle sta=
nds but not by turning a <br>rear wheel by hand or with an e motor.<br></di=
v><div> </div><div>Noise does appear to come from transmission.<br></d=
iv><div><div> </div><div>To verify is not diff removed one of the rear=
seats and noise doesn't <br>appear to be coming from diff area.<br></div><=
div>Disconnecting prop shaft to isolate diff not possible as need the inert=
ia <br>of the rear wheels to produce the pulsing.</div></div><div> </d=
iv><div>About 5k miles ago I changed out the larger OD front bearing (sourc=
ed from <br><div><br></div>Moss ... ?) in the OD.</div><div>OD works fine a=
nd transmission shifts and works OK without unusual <br><div><br></div>nois=
es.</div><div> </div><div>The pulsating/cyclical nature of the noise b=
affles me and not consistent <br><div><br></div>with a bearing failure ?</d=
iv><div> </div><div>Given that it occurs in neutral with no gears mesh=
ing it surely is not a <br>bad gear tooth etc.<br></div><div>OD not engaged=
so it is locked so not likely there.<br></div><div>Removed gearbox top cov=
er and did inspection - nothing obvious.<br></div><div>So to my mind this o=
nly leaves the GB rear bearing ?</div><div>Or maybe a broken circlip or thr=
ust washer and probably on main shaft <br>external to gearbox ?<br></div><d=
iv>or half shaft ?<br></div><div> </div>Any comments/thoughts apprecia=
ted from the more experienced <br>among us. <br><div>Tkx</div><div>rg<br></=
div></div><hr><p><br>_______________________________________________<br>Sup=
port Team.Net <br>http://www.team.net/donate.html<br>Suggested annual donat=
ion <br>$12.75<br></p><div><br></div><p>Archive: http://www.team.net/=
pipermail/healeys <br>http://autox.team.net/archive<br></p><div><br></div><=
p>Healeys@autox.team.net<br>http://autox.team.net/mailman/listinfo/healeys<=
br></p><div><br></div><p>Unsubscribe/Manage: <br>http://autox.team.net/mail=
man/options/healeys/healeydoc@gmail.com<br></p><div><br></div></div></div><=
/div><div><br></div><div><br></div></body></html>
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