three speed noise (1 Viewer)

[brian243]

My 66 has a three speed trans that really makes a loud whine or howl at certain rpms. What can I do to quiet it down. Thanks

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[Poser]

New gearboxes.

Heavier weight gear oil.

Different vehicle.

 

[reddingcruiser]

Ear plugs, bigger amp and bigger speakers.

 

[SouthBostonFJ40]

Make sure your U joints are good and tight. Sometimes driveline noise can be mistaken for tranny noise.

 

[Roboosfj40s]

Like Poser said. I used 140 wt. gear oil in my 3 speed until I replaced it now the wife and I can have a conversation without yelling. Rebuilt tranny and T-case fixed it right up. But as mentioned, check everything first. Sound travels throught these puppies as they are in no way a Lexus.

 

[brian243]

Thanks guys I will be checking u joints and changing to a heavy oil. How hard is it to do a rebuild on the trans and t case. Any special tools needed. Will I need a press to get to all the bearings. What if the gears look too worn does anyone make new gears or do I just find old ones. I don't want to change to a different type of trans because I want to keep the pto winch and ranger od unit.

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[1973Guppie]

stock 3spd tc are just loud, period. Mine was really loud for years till I installed an orion and it is so much quiter now.

 

[brian243]

Did you rebuild it or just add orion unit.

 

[1973Guppie]

we used all new stuff in the orion, my old 3spd transfer case was rebuilt awhile ago using used gears which I believe were meshing badly together, anyhow the 3spd TC IMO are just noisy units, they have a distinct whine to them.....

 

[My71FJ40]

I like Cruiser whine

 

[Fast Eddy]

Did you rebuild it or just add orion unit.

It replaces the 3-speed t-case housing and the gears. You have to buy a new output shaft and a rebuild kit. I had mine done at Mark's Off Road in Burbank.

 

[65swb45]

Do you have any sound deadening material on the floor and transmission tunnel cover?

I took over 10db off the noise level in the 45 last year with a combination of materials.

And FWIW, there are such things as NOS transfer cases as well.

Best

Mark A.