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<div dir="ltr" data-setdir="false">You know where this is going. Pull it.</div><div dir="ltr" data-setdir="false">Mike MacLean<br></div><div><br></div>
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On Sunday, August 23, 2020, 12:05:05 PM PDT, Roger Grace via Healeys <healeys@autox.team.net> wrote:
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<div><div id="yiv2787218348"><style>#yiv2787218348 body {min-height:100%;color:#000000;font-size:12pt;font-family:arial, helvetica, sans-serif;}</style><div><div>M - thank you for your interest and ideas.<br clear="none"></div><div><br clear="none"></div><div>Ok have just done another test session.<br clear="none"></div><div>All listening with one of those stethoscope things.<br clear="none"></div><div>Seems worst at rear area of GB.<br clear="none"></div><div><br clear="none"></div><div>(a) Prop shaft connected.<br clear="none"></div><div>Both rear wheels free and wheels mounted.<br clear="none"></div><div>Same results for single wheel free.<br clear="none"></div><div>Noise is distinct when start in 4th at about 20 MPH; OD out; shift to neutral and cut ignition.<br clear="none"></div><div>As wheels slow down the noise becomes more pronounced and don't rally need scope to hear the beat - particularly as it approaches zero speed.<br clear="none"></div><div>At higher speed the the fast repetitions makes the sound of the individual beats blend together.<br clear="none"></div><div><br clear="none"></div><div>(b) Prop shaft not connected and engine running<br clear="none"></div><div>In this mode not possible to do the shift to neutral and cut ignition routine as engine slows down too quickly.<br clear="none"></div><div>So run at as slow a speed as possible in the different gears.<br clear="none"></div><div>OD out<br clear="none"></div><div>all 3 gears similar.<br clear="none"></div><div>the beat sound not as loud as at (a) but do believe that is because of the background engine noise.</div><div>So in 2nd was able to control speed best and at low speed could hear the individual beats at low speed.<br clear="none"></div><div>Could also hear the problem in 3rd and 4th but speed higher so not as distinct because of the increased RPM.<br clear="none"></div><div>1st just too noisy for testing.<br clear="none"></div><div><br clear="none"></div><div>Getting close to biting the bullet pulling it out ... grr !!<br clear="none"></div><div><br clear="none"></div><div>rg<br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div><div><br clear="none"></div><div class="yiv2787218348yqt0408910911" id="yiv2787218348yqtfd51475"><div>----- Original Message -----<br clear="none">From: Michael Salter via Healeys <healeys@autox.team.net><br clear="none">To: John Harper <ah100register@gmail.com><br clear="none">Cc: healeys@autox team. net <healeys@autox.team.net><br clear="none">Sent: Sun, 23 Aug 2020 06:21:18 -0600 (MDT)<br clear="none">Subject: Re: [Healeys] Mystery noise - Update<br clear="none"></div><div><br clear="none"></div><div>The fact that you report : <div>"<span style="font-family:sans-serif;font-size:12.8px;">With propshaft disconnected, am able hear noise in 2nd or 4th when slipping clutch (reduces speed)"</span><div><span style="font-family:sans-serif;font-size:12.8px;">Is probably significant. I would be making every effort to determine that 3rd gear eliminates the noise completely before going any further.</span></div><div><span style="font-family:sans-serif;font-size:12.8px;">Then carefully considering what is different in 2nd and 4th.</span></div><div><span style="font-family:sans-serif;font-size:12.8px;"><br clear="none"></span></div><div><span style="font-family:sans-serif;font-size:12.8px;">M</span></div><div><span style="font-family:sans-serif;font-size:12.8px;"><br clear="none"></span></div></div></div><div><br clear="none"></div><div class="yiv2787218348gmail_quote"><div class="yiv2787218348gmail_attr" dir="ltr">On Sun., Aug. 23, 2020, 5:41 a.m. John Harper via Healeys, <<a rel="nofollow" shape="rect" ymailto="mailto:healeys@autox.team.net" target="_blank" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br clear="none"></div><blockquote class="yiv2787218348gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div dir="ltr">David<div><br clear="none"></div><div>Is your fan belt in good order. I had one that was 'lumpy' with some cross sections being different to others. I had great difficulty working out where the vibration came from. In the event it was the car that told me by fracturing the dynamo bracket</div></div><br clear="none"><div class="yiv2787218348gmail_quote"><div class="yiv2787218348gmail_attr" dir="ltr">On Sun, 23 Aug 2020 at 03:54, David Porter <<a rel="nofollow" shape="rect" ymailto="mailto:frogeye@porterscustom.com" target="_blank" href="mailto:frogeye@porterscustom.com">frogeye@porterscustom.com</a>> wrote:<br clear="none"></div><blockquote class="yiv2787218348gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid #cccccc;padding-left:1ex;"><p dir="ltr">Well, then it is rotational for sure, not a bearing that is failing but perhaps already failed, perhaps allowing the O/D annulus to scrape the surrounding housing...though it did not sound like steel on aluminum to me. You have moved the noise from rear to midway.. perhaps if you haven't, check for a failed motor mount and the crank pulley scraping the cross member?? DP</p><span style="font-family:Calibri;"><span style="font-family:Calibri;"><br clear="none"></span></span><div><br clear="none"></div><span style="font-family:Calibri;"><span style="font-family:Calibri;">On August 22, 2020, at 6:46 PM, Roger Grace via Healeys <<a rel="nofollow" shape="rect" ymailto="mailto:healeys@autox.team.net" target="_blank" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>> wrote:<br clear="none"></span></span><div><br clear="none"></div><div><div><div>Not a lot of progress...<br clear="none"></div><div><br clear="none"></div><div>Brake cable is well clear of propshaft and securely clipped.</div><div><br clear="none"></div><div>Universal U joint/spline phasing is correct.</div><div><br clear="none"></div><div>Been doing lots of listening with stethoscope.<br clear="none"></div><div>With propshaft disconnected, am able hear noise in 2nd or 4th when slipping clutch (reduces speed)<br clear="none"></div><div>Assume is the same noise and less distinct because of the engine noise.<br clear="none"></div><div>Not nearly as distinct as when shaft is connected and rear wheels freewheeling in neutral and engine off.<br clear="none"></div><div>Loudest area seems to be rear GB casing near rear bearing.<br clear="none"></div><div>This still does not sound like a bearing to my ears ?<br clear="none"></div><div><br clear="none"></div><div>Plan to try to get a 2nd expert opinion with younger ears !<br clear="none"></div><div><br clear="none"></div><div>rg</div></div><div><br clear="none"></div><div>----- Original Message -----<br clear="none">From: David Nock <<a rel="nofollow" shape="rect" ymailto="mailto:healeydoc@gmail.com" target="_blank" href="mailto:healeydoc@gmail.com">healeydoc@gmail.com</a>><br clear="none">To: Roger Grace <<a rel="nofollow" shape="rect" ymailto="mailto:roggrace@telus.net" target="_blank" href="mailto:roggrace@telus.net">roggrace@telus.net</a>>, 'healeylist' <<a rel="nofollow" shape="rect" ymailto="mailto:healeys@autox.team.net" target="_blank" href="mailto:healeys@autox.team.net">healeys@autox.team.net</a>><br clear="none">Sent: Thu, 20 Aug 2020 12:47:51 -0600 (MDT)<br clear="none">Subject: Re: [Healeys] Mystery noise<br clear="none"></div><div><br clear="none"></div><div dir="ltr"><div style="font-size:12pt;font-family:Century;color:#000000;"><div>Drive shaft hitting the handbrake cable when the car is jacked up. Probably <br clear="none">will go away when sitting on the ground.</div><div> </div><div> </div><div style="font-size:12pt;font-family:Century;color:#000000;">David <br clear="none">Nock<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:healeydoc@sbcglobal.net" target="_blank" href="mailto:healeydoc@sbcglobal.net">healeydoc@sbcglobal.net</a><br clear="none">209 948 <br clear="none">8767<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.britishcarspecialists.com">www.britishcarspecialists.com</a><br clear="none"><div><br clear="none"></div>Help us have our Founder Norman <br clear="none">Nock inducteed into the <br clear="none">British Sportscar Hall of Fame, You can vote for <br clear="none">your favorites <br clear="none">by visiting the site <br clear="none">at.<br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.britishsportscarhalloffame.org">www.britishsportscarhalloffame.org</a><br clear="none"></div><div 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;"><div> </div><div style="background:#f5f5f5;"><div><b>From:</b><a rel="nofollow" shape="rect" title="healeys@autox.team.net">Roger Grace via Healeys</a><br clear="none"></div><div><b>Sent:</b> Thursday, August 20, 2020 10:27 AM</div><div><b>To:</b><a rel="nofollow" shape="rect" title="healeys@autox.team.net">'healeylist'</a><br clear="none"></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;"><div><div>AH people - fighting a noise in my BJ8 that may or may not be <br clear="none">serious.</div><div>Reluctant to tear out the tranny unnecessarily and then to find it was <br clear="none">something simple !<br clear="none"></div><div> </div><div>Notice it at low speed (probably exists at driving speed but too much wind <br clear="none">and engine <br clear="none">noise) if shift to neutral and cut ignition to minimize engine <br clear="none">and exhaust noise.</div><div>Noise is pulsating - like a tire with a bad spot but seems to be at <br clear="none"><div><br clear="none"></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 clear="none">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 clear="none">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 clear="none">cut engine. Tunnel cover off.<br clear="none"></div><div> </div><div>Able to replicate noise with engine on axle stands but not by turning a <br clear="none">rear wheel by hand or with an e motor.<br clear="none"></div><div> </div><div>Noise does appear to come from transmission.<br clear="none"></div><div><div> </div><div>To verify is not diff removed one of the rear seats and noise doesn't <br clear="none">appear to be coming from diff area.<br clear="none"></div><div>Disconnecting prop shaft to isolate diff not possible as need the inertia <br clear="none">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 clear="none"><div><br clear="none"></div>Moss ... ?) in the OD.</div><div>OD works fine and transmission shifts and works OK without unusual <br clear="none"><div><br clear="none"></div>noises.</div><div> </div><div>The pulsating/cyclical nature of the noise baffles me and not consistent <br clear="none"><div><br clear="none"></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 clear="none">bad gear tooth etc.<br clear="none"></div><div>OD not engaged so it is locked so not likely there.<br clear="none"></div><div>Removed gearbox top cover and did inspection - nothing obvious.<br clear="none"></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 clear="none">external to gearbox ?<br clear="none"></div><div>or half shaft ?<br clear="none"></div><div> </div>Any comments/thoughts appreciated from the more experienced <br clear="none">among us. <br clear="none"><div>Tkx</div><div>rg<br clear="none"></div></div><hr><p><br clear="none">_______________________________________________<br clear="none">Support <a rel="nofollow" shape="rect" target="_blank" href="http://Team.Net">Team.Net</a><br clear="none"><a 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shape="rect" target="_blank" href="http://autox.team.net/mailman/options/healeys/healeydoc@gmail.com">http://autox.team.net/mailman/options/healeys/healeydoc@gmail.com</a><br clear="none"></p><div><br clear="none"></div></div></div></div><div><br clear="none"></div><div><br clear="none"></div></div>_______________________________________________<br clear="none"><div><br clear="none"></div>Support Team.Net <a rel="nofollow" shape="rect" target="_blank" href="http://www.team.net/donate.html">http://www.team.net/donate.html</a><br clear="none"><div><br clear="none"></div>Suggested annual donation $12.75<br clear="none"><div><br clear="none"></div><br clear="none">Archive: <a rel="nofollow" shape="rect" target="_blank" href="http://www.team.net/pipermail/healeys">http://www.team.net/pipermail/healeys</a><a rel="nofollow" shape="rect" target="_blank" href="http://autox.team.net/archive">http://autox.team.net/archive</a><br clear="none"><div><br clear="none"></div><a rel="nofollow" shape="rect" ymailto="mailto:Healeys@autox.team.net" target="_blank" href="mailto:Healeys@autox.team.net">Healeys@autox.team.net</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://autox.team.net/mailman/listinfo/healeys">http://autox.team.net/mailman/listinfo/healeys</a><br clear="none"><div><br clear="none"></div><br clear="none">Unsubscribe/Manage: <a rel="nofollow" shape="rect" target="_blank" href="http://autox.team.net/mailman/options/healeys/ah100register@gmail.com">http://autox.team.net/mailman/options/healeys/ah100register@gmail.com</a><br clear="none"><div><br clear="none"></div></blockquote></div><br clear="all"><div><br clear="none"></div>-- <br clear="none"><div dir="ltr"><div dir="ltr">Best wishes<div><br clear="none"></div><div>John Harper</div><div><br clear="none"></div><div>AHC UK 100 Register Secretary</div></div></div><br clear="none">_______________________________________________<br clear="none"><div><br clear="none"></div>Support 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