motor & transmission mounts

[Harbilly]

There is confusion at the parts house. Does anyone know if motor/transmission mounts (toyota calls them front and rear?) are the same 4WD=2WD or if any truck or other units fit? All the rubber is gone from one of mine and the manual tranny flops up and down.
I've got some thumping if I work the gas on and off, shift hard etc. I need to look at some other stuff like the front dif mounts too as I get a noise (like the front drive shaft U clipping body member) if I drive with hubs locked - not there if actually in 4WD or if the hubs are unlocked. It is triggered by uneven road and bumps. I can change the pitch and loudness of the noise if not in 4WD and I start to pull on and then release the 4WD selector.
Any and all hints, tips or finger pointing will be greatly appreciated!!!
Cheers, and Happy New Year!

[Harbilly]

Just looked. The front drive shaft is really close to a control arm (?) and has worn through the rubber around the radiator line (?) heater line (?) rad cooler line(?) but doesn't seem to have touched the metal pipe. This sounds like the missing rubber in the tranny mount, or something, is letting the drive train sag.
Sure does.

[timsrv]

There are different transmission mount configurations depending on year and what transmission you have. The part that breaks is almost always the engine mount on the driver's side. This is because the engine torque tends to pull it apart where-as the one on the passenger side gets pushed together. Toyota calls the engine mounts front insulators. The right and left sides are interchangeable. For 2nd generation vans (4y) these are Toyota part #12361-71020 (3y vans use a different part number and there are some possible exceptions on 86 vans).

If I remember right all the 4wd's only have the one transmission mount and that usually doesn't break. It's mounted on top in the middle. It's got a metal loop with rubber inside. The transmission basically hangs from this mount via a bolt that goes right through the middle. It is pretty much just there for vertical support (won't prevent rocking if you have a broken motor mount). Sometimes on removal the center support bolt gets stuck in the metal sleeve and can be a real PITA to remove, but other than that I've never had problems with these. The photo below was taken from the EPC for an 87 automatic 4wd. Tim

[Harbilly]

Thanks Tim. I know I broke a new shock once that led to this noise before so I'll check those and the mounts. There has to be a reason for a sagging drive train. at least putting it in 4wd, for now, gets rid of the noise.

[Harbilly]

Driver's motor mount was replaced 6 weeks ago. I'll look again to see if it is broken again. The mount was aftermarket so I just ordered one from Titus-Will in Seattle. And I'll check the driver's shock. I'm thinking the missing rubber from the transmission mount is letting the whole drive train sag but maybe it's something else. Really my mechanic will do all this. I don't tackle drive train stuff. I suppose we had better look at the front axle/peanut mounts and stops while we are at it.
I wonder if the replacement shocks were too wimpy and letting stuff sag?
Lots of variables but a competent mechanic should be able to raise the drive train now that I know that is the problem.
I wish I was a competent mechanic. I DID do the fuel injectors and lots of other stuff so I'm not a complete buffoon!!

[Harbilly]

The torsion bar is maybe twisted. That let's the van sag I think. Next week we'll see if anything else is going on.

[timsrv]

For 2nd generation vans (4y) these are Toyota part #12361-71020 (3y vans use a different part number and there are some possible exceptions on 86 vans).

For aftermarket there's Anchor #9029 & Beck Arnley #1041332

[RawbSpear]

oh, thanks! Missed that

[NickP]

Hi!

I've got an 87 4x4 (5-speed) and when I accelerate hard from a dead stop I get a strong rumble/vibration under the driver's seat. Feels like the valve cover vibrating against the underside of driver side access hatch. I'm thinking it's the left motor mount but was wondering if there might be something else I should check before replacing. Thanks!

[Speach]

I have done a lot of maintenance work to my van this year. After installing new motor mounts the van and steering wheel shake worse than before. Any recommendations?

[Speach]

Fixed the problem. One was moved sideways

[MyToy]

Will be ready to re-install the trusty 4Y back into my 86 LE. I forgot that when it was removed we found this transmission mount that I could not find anywhere. None of my docks nor TVT has any threads on this.
Can anyone point me in the right direction for a part number or parts outlet that may have this?

Thank you

[VanCo]

I wasn't able to locate a replacement for mine either. I bought a similar round shapped motor mount from some front wheel drive. AutoZone let me go back and open boxes until I found one that would work. I the cut the old mount off the trans mounting bracket, and welded the new mount on. I went slow to make sure I didn't burn the rubber in the new mount. That's been going strong for 10 years.

[MyToy]

Thanks for the comeback. Wow, couldn't find it huh?

So are you saying you cut off the donut and the steel that surround it and welded on the replacement to the same mount?

Were you are all concerned that the elevation of the back of the transmission was not in line with the meat ball?

[VanCo]

I just found this on eBay:

https://rover.ebay.com/rover/0/0/0?m...2F122571705306

But the pics aren't quite right?

Yeah, I cut the round part off and welded the new round part on. When I made mine, I made sure the dimensions were right for the replacement so everything was aligned. I spent a long while opening motor mounts at AutoZone until I found the right one. I should have made note of the part number, but I didn't.

Someone else might have more information regarding this. I made one because it was easier than searching and waiting.

[MyToy]

Yea, I see what you mean. I did find this but again I am not sure of the dims.

I may inquire to see if the dims are available then compare it to the old one.

Crap, I thought this would be a no brainer.

Bummer

MT
https://www.amazon.com/gp/product/B0...KIKX0DER&psc=1

[nikifix]

Will be ready to re-install the trusty 4Y back into my 86 LE. I forgot that when it was removed we found this transmission mount that I could not find anywhere. None of my docks nor TVT has any threads on this.
Can anyone point me in the right direction for a part number or parts outlet that may have this?

Thank you

https://www.thewrenchmonkey.ca/produ...westar/em5749/

[Maxisback]

I just went through all this , if you can find my thread on it , somebody in canada sent me a link for a new one , I finaly found a good used one , meanwhile I have a partsvan sitting in a farmers feild that has one , but I cant get to it .

[MyToy]

Thanks for the link nikifix but this ones mounting bolts look very wide to fit the stock mount. But thanks for the help for sure.

Max, thanks for the the thought on the used one. No worries, the one I have is not really bad, the rubber is cracked in three places but it has no problem holding up the trans. Just that now that the engine is almost done and the transmission is out is the time to change this puppy. I noticed before the engine came out that when I drive the van in over riding conditions all is well however when I accelerate, like to pass another car, I hear this low frequency hum from under the middle of the van. I thought maybe it is a muffler issue. But when I dropped the trans I saw this and thought maybe this is the problem.
When I had a new LE back in 86 I don't remember this low hum noise.

So that is why I am pushing for a new one. So you have a thread from some guy in Canada huh?
Man I tore appart TVT on google search and could not find much on this. I will look more and maybe I can find it. Will keep you posted. At least I know I am not the only one

Thanks again to all.

MT

[MyToy]

I may have found the OEM for this part. They are researching my vin and will respond some time this week.
Will keep you posted.

MT