Boats For Sale:
transmission whine |
Post Reply 
|
| Author | |
tarpon32 
Newbie 
Joined: April-11-2019 Location: Alabama Status: Offline Points: 37 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: transmission whinePosted: April-12-2019 at 5:39pm |
|
1990 Nautique 351 PCM transmission 550 hours.. Read all the threads about the whine due single exhaust,. type of oil, maybe adding more soundproofing ect. . The trans has red oil with the placard about 20 weight. Can anything be done to quite the whine under 2500 rpm, would you suggest changing the oil to 20 wt? I can live with the noise with ear plugs, requesting some info from the forum who corrected this problem. Randy
|
|
|
Randy
|
|
 |
|
|
Orlando76
Grand Poobah 
Joined: May-21-2013 Location: Mount Dora, FL Status: Offline Points: 3108 |
Post Options
Thanks(0)
Quote Reply
Posted: April-12-2019 at 5:58pm |
|
Transmission fluid comes in weights? Did I miss something here? The whine 90% probability is coming from the reduction gear. It is what it is. Now back to the fluid.....
|
|
|
Please support The Cystic Fibrosis Foundation
1976 Ski Nautique 351 Escort 1993 Ski Nautique purple and black 351 HO PCM |
|
|
|
|
phatsat67
Grand Poobah
Joined: March-13-2006 Location: Indiana Status: Offline Points: 6157 |
Post Options
Thanks(0)
Quote Reply
Posted: April-12-2019 at 6:06pm |
|
1.23 Transmissions originally called for 20W oil not trans fluid. Dex/Merc is a perfectly fine substitute and I believe factory offering as of late.
|
|
|
|
|
SNobsessed
Grand Poobah
Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
Post Options
Thanks(0)
Quote Reply
Posted: April-12-2019 at 8:14pm |
|
The whine is from the straight cut gears. No oil is going to silence it. Nature of the beast.
Edit - The PO of my old '89 told me he had the transmission reduction gears replaced, due to noise. The trans shop owner later told me that the gears were badly eroded. As I recall, he thought they were made from powdered metal. |
|
|
“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
|
|
|
|
8122pbrainard
Grand Poobah
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
Post Options
Thanks(0)
Quote Reply
Posted: April-12-2019 at 8:56pm |
|
The old used car lot trick was to put sawdust in worn whining Trans's and differentials!!
|
|
|
|
|
SNobsessed
Grand Poobah
Joined: October-21-2007 Location: IA Status: Offline Points: 7102 |
Post Options
Thanks(0)
Quote Reply
Posted: April-12-2019 at 9:33pm |
Pete - this is what the (crooked) church lady did to Barney! Just saw that episode a few weeks ago! |
|
|
“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin |
|
|
|
|
Post Reply
|
|
Tweet
|
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
8122pbrainard wrote: