Transmission tail shaft bushing (s) and seal for 64 with TH400 - 63/64 Cadillac Website2024-03-28T18:34:45Zhttps://6364cadillac.ning.com/forum/topics/transmission-tail-shaft-bushing-s-and-seal-for-64-with-th400?commentId=6543066%3AComment%3A270671&xg_source=activity&feed=yes&xn_auth=noThank you!!
tag:6364cadillac.ning.com,2021-04-03:6543066:Comment:2709342021-04-03T01:27:39.779ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 18pt;">Thank you!!</span></p>
<p></p>
<p><span style="font-size: 18pt;">Thank you!!</span></p>
<p></p> After thinking it through a b…tag:6364cadillac.ning.com,2021-04-02:6543066:Comment:2706722021-04-02T16:14:19.940ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">After thinking it through a bit more carefully, I believe whatever was the original source of vibration is still there but because the drive-line "anchorage" has been tightened and strengthened, the manner in which the vibration is now experienced has changed. Just for "shitz and giggles" do you know where I can buy the bushing (s) ? Thanks! </span></p>
<p><span style="font-size: 12pt;">After thinking it through a bit more carefully, I believe whatever was the original source of vibration is still there but because the drive-line "anchorage" has been tightened and strengthened, the manner in which the vibration is now experienced has changed. Just for "shitz and giggles" do you know where I can buy the bushing (s) ? Thanks! </span></p> Interesting-the tech who work…tag:6364cadillac.ning.com,2021-04-02:6543066:Comment:2708352021-04-02T14:24:36.696ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">Interesting-the tech who worked on the car mentioned wanting to check that when he did his test drive. I guess it was good. The remaining vibration is speed sensitive and feels rotational. That said, however, I'm going to ask if that inspection was actually done. </span></p>
<p><span style="font-size: 12pt;">Thanks, Russ!</span></p>
<p></p>
<p><span style="font-size: 12pt;">Interesting-the tech who worked on the car mentioned wanting to check that when he did his test drive. I guess it was good. The remaining vibration is speed sensitive and feels rotational. That said, however, I'm going to ask if that inspection was actually done. </span></p>
<p><span style="font-size: 12pt;">Thanks, Russ!</span></p>
<p></p> Norman, I would consider repl…tag:6364cadillac.ning.com,2021-04-02:6543066:Comment:2706712021-04-02T11:48:18.036Z3ft7bqmb7dryohttps://6364cadillac.ning.com/xn/detail/u_3ft7bqmb7dryo
<p>Norman, I would consider replacing the rear lower trailing arm, forward bushing with the insert and poly bushing. It has cured several vibration issues. </p>
<p><span>dan.mcnarry@telus.net Contact Dan, as he has new trailing arms and the inserts. </span></p>
<p>Norman, I would consider replacing the rear lower trailing arm, forward bushing with the insert and poly bushing. It has cured several vibration issues. </p>
<p><span>dan.mcnarry@telus.net Contact Dan, as he has new trailing arms and the inserts. </span></p> UPDATE:
I had a new transmiss…tag:6364cadillac.ning.com,2021-04-02:6543066:Comment:2709322021-04-02T00:35:57.508ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">UPDATE:</span></p>
<p><span style="font-size: 12pt;">I had a new transmission mount installed and a modulator (wasn't getting half throttle downshifts) and a tail shaft bushing (very worn) and a rear seal. Vibration has improved considerably and tranny tech says any remaining vibration is all in the drive shaft. I can live with the level being produced as it is very minor and goes away at higher speeds of 70 to 75 (the pace of traffic in and around San Diego's…</span></p>
<p><span style="font-size: 12pt;">UPDATE:</span></p>
<p><span style="font-size: 12pt;">I had a new transmission mount installed and a modulator (wasn't getting half throttle downshifts) and a tail shaft bushing (very worn) and a rear seal. Vibration has improved considerably and tranny tech says any remaining vibration is all in the drive shaft. I can live with the level being produced as it is very minor and goes away at higher speeds of 70 to 75 (the pace of traffic in and around San Diego's freeways). Thanks to all for inputs. PS-the whole thing came to $250, which is considerably less than what I had expected to pay. Mira Mar transmissions was the shop on Silverton Ave in San Diego (near Mira Mar air base). 858 549 3777. Careful, competent and reasonable.</span></p>
<p></p> When installing the front yok…tag:6364cadillac.ning.com,2021-03-14:6543066:Comment:2702102021-03-14T14:10:31.617Z24ro8f5mbs2jchttps://6364cadillac.ning.com/xn/detail/u_24ro8f5mbs2jc
<p>When installing the front yoke into the transmission housing seal you apply some trans-fluid to make it easier to push it in. You can fit the yoke without any extra trans-fluid, but it can be difficult and in worst case do some damage. When the yoke is in place the trans-fluid inside the gearbox will lubricate and keep the seal in good condition. As you were able to fit the front yoke you did have enough trans-fluid applied. You will not get any vibration from the front yoke.</p>
<p>From…</p>
<p>When installing the front yoke into the transmission housing seal you apply some trans-fluid to make it easier to push it in. You can fit the yoke without any extra trans-fluid, but it can be difficult and in worst case do some damage. When the yoke is in place the trans-fluid inside the gearbox will lubricate and keep the seal in good condition. As you were able to fit the front yoke you did have enough trans-fluid applied. You will not get any vibration from the front yoke.</p>
<p>From what you say you did some overhauling on the propeller shaft. I'm guessing you also checked Jasons video on C/V joints. However this is a lot more tricky than most car guys would think. If you have been able to rule out wheel bearings and the rear axle as cause of vibrations your only option is the propeller shaft.</p>
<p>Your vibration most likely comes from the propeller shaft being imbalanced, the universal joints worn, center bearings damaged or the C/V joints not up to spec (a 55+ old car <span style="text-decoration: underline;">will</span> have worn springs and most likely a deformed ball in the C/V joints).</p>
<p>Do consider the weight of the car, the horse power and the length of the split shaft and you realize these cars are more difficult to sort than your average Ford/Chevy. Take the shaft to a reputable shop and get is balanced. I know one in Stockholm that will get the shaft including C/V-joints to 100%. Shipping ain't gonna be cheap but you get it right.</p> A story with a happy ending!…tag:6364cadillac.ning.com,2021-03-13:6543066:Comment:2699002021-03-13T21:57:35.124ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">A story with a happy ending! Sorry for the confusion, I meant the very front yoke that goes in to the transmission. Not sure if I gave it enough trans fluid lubrication when I put it back in after swapping out the driveshaft and new center bearing and support.</span></p>
<p><span style="font-size: 12pt;">A story with a happy ending! Sorry for the confusion, I meant the very front yoke that goes in to the transmission. Not sure if I gave it enough trans fluid lubrication when I put it back in after swapping out the driveshaft and new center bearing and support.</span></p> Don't think you would get any…tag:6364cadillac.ning.com,2021-03-13:6543066:Comment:2698942021-03-13T19:41:55.654Z24ro8f5mbs2jchttps://6364cadillac.ning.com/xn/detail/u_24ro8f5mbs2jc
<p>Don't think you would get any vibration from that. But not sure what part you are referring to.</p>
<p>I had problems with vibrations. Fixed/replaced the C/V joints. Replaced the center bearing. Replaced the rear wheel bearings. Even replaced the rear axle and overhauled the transmission. Still this loud "scraping" sound and vibrations. Nearly gave up, but was looking on an episode of Car SOS and they had a similar problem. Their solution was to balance the propeller shaft. I removed mine.…</p>
<p>Don't think you would get any vibration from that. But not sure what part you are referring to.</p>
<p>I had problems with vibrations. Fixed/replaced the C/V joints. Replaced the center bearing. Replaced the rear wheel bearings. Even replaced the rear axle and overhauled the transmission. Still this loud "scraping" sound and vibrations. Nearly gave up, but was looking on an episode of Car SOS and they had a similar problem. Their solution was to balance the propeller shaft. I removed mine. Took it to a <a href="http://www.sveabil.se/start.asp?page=8" target="_blank" rel="noopener">shop</a>. The guy that owns the shop and only does propeller shafts sorted it out in a few days. Got it back. Refitted. And took the car for a spin. Not any sound or vibration. Nothing except the music from the original 429. Everything like new!!! This was last summer. Just before midsummer. Was very well spent money. All 600USD...</p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/8663239082?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/8663239082?profile=RESIZE_710x" class="align-full"/></a></p> Can lack of adequate lubrican…tag:6364cadillac.ning.com,2021-03-13:6543066:Comment:2700292021-03-13T06:50:52.275ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">Can lack of adequate lubricant (tranny fluid) on/in the yoke cause a vibration?</span></p>
<p><span style="font-size: 12pt;">Can lack of adequate lubricant (tranny fluid) on/in the yoke cause a vibration?</span></p> Noted with abundant appreciat…tag:6364cadillac.ning.com,2021-03-13:6543066:Comment:2701192021-03-13T06:49:27.078ZNorman Silvermanhttps://6364cadillac.ning.com/profile/NormanSilverman
<p><span style="font-size: 12pt;">Noted with abundant appreciation. This is likely something I am not prepared to do myself, but armed with this knowledge I can select a shop that I can have confidence in. Any chance you live close to San Diego as I'd be inclined to try it with supervision. </span></p>
<p><span style="font-size: 12pt;">Thanks!</span></p>
<p><span style="font-size: 12pt;">Norm</span></p>
<p><span style="font-size: 12pt;">Noted with abundant appreciation. This is likely something I am not prepared to do myself, but armed with this knowledge I can select a shop that I can have confidence in. Any chance you live close to San Diego as I'd be inclined to try it with supervision. </span></p>
<p><span style="font-size: 12pt;">Thanks!</span></p>
<p><span style="font-size: 12pt;">Norm</span></p>