Toyota trans noise

[tinman58]

I have the HVDA toyota 5-speed trans conversion in my TR3. Yesterday after a 40 mile run on the freeway I down shift and first, second and third gear I get a whine (almost like a supercharger) it sounds cool but something is not right. Fourt and fifth gear sound ok. The shifting and operation seem normal, just the whine noise. I can get a trans for about $250
but I thought that these toyota trans were bullitt proof! Any ideas what it could be? or just swap out for another unit?

 

[alfa33047]

The Toyota trans is very durable, but if they are run very low on oil, it ruins the bearings in the transmission. I suspect that your trans may have had a bad rear seal and driven with a low oil level. Bill C. Mesa, Az.

 

[tinman58]

Bill, you are correct.
I pulled off the trans cover to get to the filler plug and wow lots of oil near the rear. I guess I did not notice the drip(s) since I have old carpeting down and the gear oil soaks in so as not to be seen. The good side is that the motor dosen't leak as much as I thought. So I added just over a quart of oil and drove around the block and the same noise is still there. So I guess I fried the bearings. I will take the TR to a tranny shop tomorrow to see about rebuilding the trans. Then I should get 100000 miles out of it before the next problem.

 

[tinman58]

Up date on the trans!
Pulled out the old trans this morning and the rear oil seal is pushed in and just dosent look right. I think the drive shaft was about 1/4 -3/8 too long and pushed into the seal. I have the new trans in place and will remeasure the drive shaft and most likely will shorten it 1/2" The new trans was only $100 (thanks Paul apos) and a day of laying under the car. Another lesson well learned.

 

[Geo Hahn]

I saved this from another list, may be pertinent:


> -------------- Original message --------------
> From: Anthony Cascio <allegrorover@mac.com>
>
>> Ok Folks,
>> I am in Durango, Co, with the TR3, it has the Toyota 5 speed.
>> I was driving towards Mesa Verde and the tranny started to whine
>> pretty loud.
>> It kinda stopped shifting so I pulled over checked for leaks and
>> clutch fluid, all ok.
>> I was able to get going again after 10 or so minutes, drove fine,
>> still whinning.
>> I took it into a local shop Dan's auto repair, nice guy and added
>> quite a bit of gear oil to the tranny!!! (not good)
>> Car runs fine still got the whine, I'm guessing the main shaft bearing
>> may have fried......(not good)
>> Any thoughts????
>
>
> As Bob Danielson has already answered, it is likely that the tranny flange
> moved too far forward and ate the rear seal. The locking collar prevents
> the driveshaft from collapsing, but it does NOT prevent the driveshaft
> from extending further than it should, which would cause the flange to be
> below the minimum distance from the seal. Bob told me about this, as I am
> in the process of doing this. After I read his report and email, I found
> that I could pull the end of the driveshaft out of the splines. After
> seeing this, it is off to the driveshaft shop for me to have one made
> without sliding splines. You only want 1 slip joint in the assembly, and
> you have 2.
> THANKS, Bob.
> Irv Korey
> 74 TR6

 

[apbos]

Glad it worked Dan! I've been looking for one for down the road for "Statler". This one was not really described very well as to its origins and years. But I thought you might be interested & looking for one after hearing about your problems.

Paul

 

[BobbyD]

Up date on the trans!
Pulled out the old trans this morning and the rear oil seal is pushed in and just dosent look right. I think the drive shaft was about 1/4 -3/8 too long and pushed into the seal. I have the new trans in place and will remeasure the drive shaft and most likely will shorten it 1/2" The new trans was only $100 (thanks Paul apos) and a day of laying under the car. Another lesson well learned.

This is why I went with a one piece solid drive shaft. I wasn't going to take the risk that the "locking collar" would hold the shaft in place. Even the drive shaft place told me that you never want two slips in a drive line.

 

[tinman58]

Bob
Your information and web site is fantastic, you should have Herman use your info as a addendem to his installation manule. I am going to have a one piece drive shaft made this week. Again thank you for the info.
P.S. How do you have the time to do the web page so well?

 

[BobbyD]

Bob
Your information and web site is fantastic, you should have Herman use your info as a addendem to his installation manule. I am going to have a one piece drive shaft made this week. Again thank you for the info.
P.S. How do you have the time to do the web page so well?

Herman and I talk frequently.....he's got a new web site about to launch!

As to my having the time......it's called retirement! Though I do have to complete a new section showing how I made all new interior panels out of leather over this past winter. I guess I'm now a seamstress too

 

[tinman58]

Up date on the trans. New trans (used) $100, new drive shaft &250, 3 quarts oil and a new rear seal and back on the road. It turns out that the drive shaft moved forward and hit the rear seal, causing the oil to drip out and cooking the bearings. The fix is a one piece or no slip drive shaft. The new yoke in Hermans kit is all you need, If you install one from HVDA look at Bobs link above (which is in my favorites) he has a lot of great info. So we were back on the road tonight. I do love the HVDA set up smooth and quiet. You can't go wrong on a $100 trans!!