<html><head><style> body {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetica,sans-serif;}</style></head><body><div>David,<br></div><div>Thank you. Yes sounds quite feasible; will check and report back<br data-mce-bogus="1"></div><div>rg<br data-mce-bogus="1"></div><div><br></div><div>----- Original Message -----<br>From: David Nock <healeydoc@gmail.com><br>To: Roger Grace <roggrace@telus.net>, 'healeylist' <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> body {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetica,sans-serif;}</style><div dir="ltr"><div style="font-size: 12pt; font-family: 'Century'; color: #000000;" data-mce-style="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="font-size: 12pt; font-family: 'Century'; color: #000000;" data-mce-style="font-size: 12pt; font-family: 'Century'; color: #000000;">David <br>Nock<br>healeydoc@sbcglobal.net<br>209 948 <br>8767<br>www.britishcarspecialists.com<br><div><br></div>Help us have our Founder Norman <br>Nock inducteed into the <br>British Sportscar Hall of Fame, You can vote for <br>your favorites <br>by visiting the site <br>at.<br>www.britishsportscarhalloffame.org<br></div><div style="font-size: small; text-decoration: none; font-family: 'Calibri'; font-weight: normal; color: #000000; font-style: normal; display: inline;" data-mce-style="font-size: small; text-decoration: none; font-family: 'Calibri'; font-weight: normal; color: #000000; font-style: normal; display: inline;"><div style="font: 10pt tahoma;" data-mce-style="font: 10pt tahoma;"><div> </div><div style="background: #f5f5f5;" data-mce-style="background: #f5f5f5;"><div style="font-color: black;" data-mce-style="font-color: black;"><b>From:</b><a title="healeys@autox.team.net">Roger Grace via Healeys</a><br data-mce-bogus="1"></div><div><b>Sent:</b> Thursday, August 20, 2020 10:27 AM</div><div><b>To:</b><a title="healeys@autox.team.net">'healeylist'</a><br data-mce-bogus="1"></div><div><b>Subject:</b> [Healeys] Mystery noise</div></div></div><div> </div></div><div style="font-size: small; text-decoration: none; font-family: 'Calibri'; font-weight: normal; color: #000000; font-style: normal; display: inline;" data-mce-style="font-size: small; text-decoration: none; font-family: 'Calibri'; font-weight: normal; color: #000000; font-style: normal; display: inline;"><div><div>AH people - fighting a noise in my BJ8 that may or may not 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><div>Notice it at low speed (probably exists at driving speed but too much wind <br>and engine <br>noise) if shift to neutral and cut ignition to minimize 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.</div><div> </div><div>At first thought that it was at wheel speed and from R side.</div><div>So changed out the R wheel bearing.</div><div>No improvement</div><div> </div><div>Then while looking below noted that universals had some play.</div><div>So changed out both universals.</div><div>Rear 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 pulsating one.</div><div> </div><div>So pulled annulus in situ and replaced both rear bearings. Quieter but <br>still the pulsating noise while coasting 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 stands but not by turning a <br>rear wheel by hand or with an e motor.<br></div><div> </div><div>Noise does appear to come from transmission.<br></div><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 inertia <br>of the rear wheels to produce the pulsing.</div></div><div> </div><div>About 5k miles ago I changed out the larger OD front bearing (sourced from <br><div><br></div>Moss ... ?) in the OD.</div><div>OD works fine and transmission shifts and works OK without unusual <br><div><br></div>noises.</div><div> </div><div>The pulsating/cyclical nature of the noise baffles me and not consistent <br><div><br></div>with a bearing failure ?</div><div> </div><div>Given that it occurs in neutral with no gears meshing 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 cover and did inspection - nothing obvious.<br></div><div>So to my mind this only leaves the GB rear bearing ?</div><div>Or maybe a broken circlip or thrust washer and probably on main shaft <br>external to gearbox ?<br></div><div>or half shaft ?<br></div><div> </div>Any comments/thoughts appreciated from the more experienced <br>among us. <br><div>Tkx</div><div>rg<br></div></div><hr><p><br>_______________________________________________<br>Support Team.Net <br>http://www.team.net/donate.html<br>Suggested annual donation <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/mailman/options/healeys/healeydoc@gmail.com<br></p><div><br></div></div></div></div><div><br></div><div><br></div></body></html>