 Transmission is whining |
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| adolimpio |
 Mar 22 2017, 06:35 PM
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#1
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Art  Group: Members Posts: 183 Joined: 10-March 10 From: Greenwood SC Member No.: 11,449 Region Association: South East States 
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My understanding of my recent barn find is that the transmission was rebuilt and was never driven after.
It does run great and shifts nicely, but there is a steady whine which appears to come from the transmission when cruising. At 55, while applying just enough gas to maintain speed, the whine is very annoying. It does it in all gears, the pitch increases with speed, and is quiet when coasting. Two extra transmissions came with the car, one looking like it was a donor, and the other looks untouched. I cracked the untouched one and examined things and the ring and sychros all looked pretty good, so I swapped it in. Magically, no whine, but grinds when shifting into 1st. So I cracked the one that whines and found that the pinion and ring gears are mismatched. One is marked 617 and the other 240. I opened the donor and found that they were also mismatched, but I now had gears from 4 sets, there were no two that matched. So I pulled the transmission that ran quiet and its gears matched. So I swapped the gear stack between the quiet one and the whiny one, and now had a transmission with all good synchros and rings, and matching pinion and ring gears. I was very proud of myself to have identified this issue and found a resolution. So I installed my new creation and it ran great, shifts beautifully, and still whines! By the way, all new transmission oil installed using Red Line 75W90. Any thoughts would be greatly appreciated! |
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| Chris H. |
Mar 23 2017, 08:17 AM
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#2
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Senior Member Group: Members Posts: 4,079 Joined: 2-January 03 From: Chicago 'burbs Member No.: 73 Region Association: Upper MidWest
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^^^^ Yes it probably needs to be realigned. Have to smear that grease on it and checked contact. I had this problem with my 5MT trans. Mine was missing a shim and it only whined on decel. Take a look at the bottom of the page on this link for an idea of how a trans is aligned.
Tooth contact alignment (bottom of page) Dr Evil could probably fix that for you. |
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| adolimpio |
Mar 23 2017, 07:38 PM
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#3
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Art Group: Members Posts: 183 Joined: 10-March 10 From: Greenwood SC Member No.: 11,449 Region Association: South East States
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QUOTE(Chris H. @ Mar 23 2017, 10:17 AM)  ^^^^ Yes it probably needs to be realigned. Have to smear that grease on it and checked contact. I had this problem with my 5MT trans. Mine was missing a shim and it only whined on decel. Take a look at the bottom of the page on this link for an idea of how a trans is aligned. Tooth contact alignment (bottom of page) Dr Evil could probably fix that for you. That's an interest procedure. The procedure in the factory manual involves some very special tools. I'll give this procedure a try. Thanks |
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Posts in this topic
adolimpio Transmission is whining Mar 22 2017, 06:35 PM
mark04usa Are you sure it is a noise from the transmission? ... Mar 22 2017, 07:13 PM wndsrfr It's the Ring/Pinion matchup that creates that... Mar 22 2017, 07:28 PM
adolimpio
It's the Ring/Pinion matchup that creates tha... Mar 22 2017, 07:52 PM BeatNavy
It's the Ring/Pinion matchup that creates th... Mar 23 2017, 06:52 AM rgalla9146
[quote name='adolimpio' post='2467160' date='Mar ... Mar 23 2017, 07:40 AM Ansbacher Before you get carried away with more complex solu... Mar 22 2017, 09:09 PM Jeffs9146 This is what I found when mine started whining on ... Mar 22 2017, 09:22 PM adolimpio
This is what I found when mine started whining on... Mar 22 2017, 10:06 PM r_towle Does it change tone or pitch between accel and dec... Mar 22 2017, 10:08 PM adolimpio
Does it change tone or pitch between accel and de... Mar 23 2017, 05:55 AM mgphoto Differential out of adjustment, yes gasket is shim... Mar 23 2017, 07:44 AM adolimpio
^^^^ Yes it probably needs to be realigned. Hav... Sep 10 2018, 03:21 PM ClayPerrine
^^^^ Yes it probably needs to be realigned. Ha... Sep 10 2018, 08:53 PM r_towle Check the bearing race deep in the case for the pi... Mar 23 2017, 08:43 AM falcor75 I have the same sort of whine in my gearbox and it... Sep 10 2018, 10:59 PM rjames I have the same issue post rebuild with a new bear... Sep 10 2018, 11:28 PM |
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