yep , same thing here on a freshly rebulit v160 . alpha mentioned to me hes seen this quite often on rebuilt units

 

yep , same thing here on a freshly rebulit v160 ...

+2

best person to talk to is s/n: swing lo he rebuilds them regularly and would have a answer for you.

+1

Has the noise ever been pinpointed? Seems like the noise always goes away in 5th from what i read.

INput shaft bearing.. 1-4 ride that shaft..

yep. 5th is quiet because it's 1:1 and doesn't apply a lateral torque to the input shaft (to my understanding).


craig

 

One of my customers V160 did the same thing after rebuilt. I guess he got used to it.

But if they said it was quiet when they pulled it, i call BS.

 

best person to talk to is s/n: swing lo he rebuilds them regularly and would have a answer for you.

 

Has the noise ever been pinpointed? Seems like the noise always goes away in 5th from what i read.

 

INput shaft bearing.. 1-4 ride that shaft..

 

Wow sorry to here that. you should call swing lo and see what he has to say. and the shop that said it was quiet when they pulled it i am thinking that's BS, you should say which shop it was so i could stay far from them...

 

These are the only two bearings, and one shim located on the input shaft/5th gear. Based on my research, and talking to other gear heads, there's a possibility of those being bad (probably not, though). There's also a possibility of too much play between the output/input shaft, or misalignment. If the input shaft was hit before installing into the car, that could have potentially caused an issue within the intermediate plate bearing. Also, if you're having a 1-4 issue, and no 5th/6th, there could be a chipped gear tooth issue. If you have a whine in all gears except 5th, the race on the counter gear may be the issue. I've only ever ran into this issue once and am working it out. Once I diag and replace the parts, I'm going to run this trans in my personal car to verify the replacement parts are what cured the issue. I'm going to start with the parts shown below first, run the box in my car, and see if that's what solves the issue. If that doesn't solve the issue, I'll pull the trans and continue problem ID and resolution. I always tell people its hard to say what the true issue is without opening a box, but with this particular issue, there seems to be one common culprit, and I intend to find out what it is in order to be able to better diag in the future, faster. I get my experience with these boxes as they come in, and so far, I've dealt with almost everything but this until recently.

As an example, the race shown below on the counter gear to the right could be the culprit if it were to be defective. I plan to find out.

EDIT: I have a friend who bought a transmission from a known drag racer on this forum. The box was said to be brand new, in 100% working order, never rebuilt, with only 500 miles on it. If this was the case, why does the tranny WHINE like a bitch in heat in every gear except 5th? That said, I can safely bet that at least 1200whp was thrown at this trans, and with all other drive-train components being aftermarket on this drag car, the next weakest link WILL be the trans if nothing else fails first.

I'd like to add that when you guys rebuild a box, you cannot expect that box to last like it would if OEM horse power was being ran through it. If you make big power, and beat the shit out of your box, it will fail again. That's just the nature of the beast. 98% of the time, the life expectancy of your box is solely determined by how you treat that box.

 

EDIT: I have a friend who bought a transmission from a known drag racer on this forum. The box was said to be brand new, in 100% working order, never rebuilt, with only 500 miles on it. If this was the case, why does the tranny WHINE like a bitch in heat in every gear except 5th? That said, I'm can safely bet that at least 1200whp was thrown at this trans, and with all other drive-train components being aftermarket on this drag car, the next weakest link WILL be the trans if nothing else fails first.

i remember seeing a tranny with similar milage in the for sale section from someone like ryan woon, and i was like "pfft lol yea right low miles, 500 miles at the drag strip is 2000 passes of just pure shifting rape"

i would rather have my 180,000 kilometer v160 than a 2000 pass "only 500mile" 1000hp trans.

mine whines a lot aswell 1-4, mostly in 1st though, else 1-3k rpm approx, only noticeable if you listen for it.

 

This transmission is supposed to be brand new only used for a few hundred miles. The transmission shifts nice, no issues with that. I dont want to name the shop because I am not certain that they are not telling me the truth about this transmission yet. He insists that it was in perfect working order with no noises. I was told that during install the input shaft did not go into the pilot bearing, putting pressure on the input shaft causing stress on the bearing. I hope this is the case although I can not see how since mating the transmission was effortless. There was no tention at all! Im going to give it the benefit of the doubt and uninstall everything and install a new throw out bearing.

 

This transmission is supposed to be brand new only used for a few hundred miles.

You don't know what those few hundred miles entailed. A lot can happen to a trans in just a couple miles.

 

Swing, I have done a few R154 and one had a whine. The box that had the whine came from the bearings on the input shaft being bad. They had play and the needle bearings were done as well. I replaced those two things only and that was the problem, no more whine.

I never did a V160 but the pictures are enough to tell me its a whole different animal. I give you a lot of respect, not that it should matter to you anytway, on doing what you are doing to get to the source of this issue. Many owners have paid Toyota the premium for new gearboxes and they had issues right after install such as the whinning noise.

 

Good to know, and thanks.

 

Swing low speaks the truth!!!

Otarantino, sent you a pm

 

SWING LO is the man to talk to about the all mighty GETRAG...

 

Was this trans from Majestic Motorsports?

 

Update:

After a recent rebuild on a very high horsepower v160 that came in with a whine in every gear but 5th, the tranny still whined after I rebuilt it per the factory service manual. This was the first time I've experienced something like this, so I went ahead and rebuilt it with the following parts:

-New synchros
-ALL new bearings
-Gears 2nd/3rd


Before sending the unit I rebuilt back to a friend, I installed it in my car, and it still whined in every gear but 5th. It only whines during acceleration, and not in decel.

I am posting this to let you guy's know that it's NOT a bearing issue as every bearing was replaced. This is a gear issue. This is an issue that is not covered in the factory service manual. The only clearance to measure is the gear radial clearance, which all were good. I'm going through the trans now with marking paint to see the mesh pattern on the gear faces.

I'll keep this thread updated to let you guys know what the solution was.

 

......((Wizzzzzzzzzz)).. Click*...(puts barrel in mouth)

 

The whine could be a deformation of teeth. The geometric mesh of the teeth are engineered for whine reduction. For instance dog cut gears or straight cut gears do not have any such design, and are made for strength only, thus will whine very loudly.

 

Beau, I was thinking about that the other day.

 

You're both correct. The gears are helical cut which allow three teeth to be in contact at all times vs. a straight cut gear allowing only one tooth to make contact at a time, thus causing a whine.

 

I hope you find the Issue..

 

My Starlet Glanza transmission has been whining since 2001. i like that sound

 

You have a free dogbox sound

 

as a toyota tech i have rebuilt many diffrent transmissions, i recently did my r154 as i have done many times before. I was trying different things to get it to live with what i do to it. I always reuse the parts i did not modify and never had any noise problems. Recently i replaced third gear with a new one upon the first test drive 1st and 2nd gear would whine. This was caused by the mesh of the teeth not being perfect because the counter shaft was reused. After two weeks of driving the whine is gone. It's like replacing a ring gear and not the pinion it will make noise however it does not always mean there is a problem.

 

^ Yep.
Drive it till it breaks. Unless it's unbearably loud.
Just as some of us were thinking. It doesn't need to be off by much to whine, and with such hardened pieces of steel like the gears in the V160 it may be a long time because those gears wear a pattern that's less noisey.

It again could also have been caused by deformation. It may be able to hold 1000+whp, but that doesn't mean the part has to stay geometrically identical every time we put it through such paces.

 

I don't think you guys understand. This is a very loud whine that is not "the norm." These boxes don't whine from the factory, and they don't whine when new gears are replaced while still using original counter gears. Yes, each gear makes its own wear pattern with its respective counter gear, but one component has to be WAYYY off for this to happen in all gears but 5th.

Remember that the counter gear (shaft) in the v160 is always in contact with each gear while its running, so in order for me to identify the failed piece, I'm going to have to take out one piece, and replace with a known working piece until I can get the whine to go away.

I've just replaced a lot of individual gears with as many as I've rebuilt that didn't result in a whine. That's not to say that the whine won't go away after two weeks of driving on this particular tranny, but I'm going to find out.

 

Update:

The past few days have been a nightmare.

After rebuilding this v160 with all new bearings, a new 2, 3, and 4th gear, I installed it into a car to test it. The tranny still whined in all gears but 5th (1:1), and neutral.

I then put the car back on the rack, dropped the trans, and broke it down again. Then I broke down my personal v160 (a whine free unit), and took my counter shaft, counter 5th, counter 6th, 1st gear, input shaft (5th gear) reverse idler gear, and installed them into the box that was whining. I then reinstalled the tranny into the car, and the howling whine went away.

I post this to say that if any of you HIGH HP guys develop a whine, it is my opinion that you may be better off selling your v160 with a known issue for around 3k, and forking out the cash to buy a brand new one. As it sits, the synchros, bearings, seals, and gears 2, 3, and 4 came out to around $1,388.00. Now add a new input shaft, counter shaft, 5/6 counter gears, 1st gear, and the bill will probably go up another 1200 or so, not including the labor someone is going to charge you to rebuild the unit, and install it.


I want to say that the counter shaft may be the main culprit along with the counter 5th/6th gears, but it would be a total pain in the ass to test one part at a time till the problem was solved.

 

thanks for the update and knowledge Van.

^If you replaced 2, 3, and 4, I would guess that 1st might have been the problem?

I recently rebuilt a V160 that had a noise problem. Everything checked out 100%, all runout and clearances perfect. Couldn't figure it out so I checked the gear mesh patterns and first gear didn't have a nice pattern like 2-3-4. Nothing I could see by eye though. Replaced 1st and counter shaft and no more noise

edit: I don't think the counter was the problem in my case because it would be fairly obvious if there was wear or deformation on the 1st counter splines, although I did replace it anyway

did that tranny have a 1-4 whine?


craig

 

^If you replaced 2, 3, and 4, I would guess that 1st might have been the problem?

I recently rebuilt a V160 that had a noise problem. Everything checked out 100%, all runout and clearances perfect. Couldn't figure it out so I checked the gear mesh patterns and first gear didn't have a nice pattern like 2-3-4. Nothing I could see by eye though. Replaced 1st and counter shaft and no more noise

edit: I don't think the counter was the problem in my case because it would be fairly obvious if there was wear or deformation on the 1st counter splines, although I did replace it anyway

 

I replaced 1-4 new, Counter gear shaft, Counter 5th & 6th, My GETRAG whines 1-4th..... this turd has cost me the price of a new getrag...

 

Any updates on this?

I recently broke my V160 input shaft because of a missing pilot bearing (stupid mistake, I know). The input shaft was changed to a brand new one with new bearings but I still get a dreadful whine on 1st-4th gears. All that was taken apart was the input shaft part, nothing else was touched. The noise remained, or it's now actually alot worse than before with the broken input shaft, almost 10 times worse. It almost sounds like straight cut gears. We now took the transmission apart all together and every bearing is perfect. So it must be something in the gears.

The noise cant come from a wrongly shimmed input shaft, right? It must be something else?

What should I do?

 

I think I solved my problem.. My trans guy had forgotten to put the input shaft shim.. duh.