Front motor mount?

[serega12]

Ok, you have a point.. now i have to look for some polyurethane 94A stuff... another thing i read on one of those forums is that i should use brand new mounts 'cause the ones that are worn can keep engine off balance since they're off balance themselves and they'll stay that way if I fill them? not sure how true that is... can you shed some light on that too?

And I just looked through subachad's how-to on another site and he used windshield glue, which is supposed to be softer and not very heat resistant ( as in the heat will damage it prematurely or something of that sort) according to another how-to.

[Daox]

Off balance sounds like a load of crock. All mounts do is hold the engine in place.

94 is pretty hard, I'd rather go with something a little softer. You're already going to stiffen it up a fair amount by making it solid. Of course, I don't like vibration in the car...

[petrified.rabbit]

I think it's lost in Internet speak. Like who's going to "fix" a mount that's not broken? But if it's broken the bolt center is out of place so if you fill it you'll reinforce it in the wrong position.

See what I am saying?

[Daox]

Yeah, that makes more sense.

[serega12]

Thank you for clarifying that. As far as hardness, they won't be solid, per se, they'll be just much stiffer if I understand correctly.

[subachad]

subachad has done this. i personally feel a redesign is necessary, the single horizontal bolt is always a pivot point, and transfers all the torque to the dogbone mount underneath.

I used 3m Window Weld, similar but a little different. I agree about the redesign, I have had so many issues with my motor mounts. If I filled them when I bought the car I think I would have avoided most of my issues.

> Mounting plate above the transmission which holds the transmission to the car mount broke, sheering off a bolt.
> Rubber was torn on Passenger side mount
> Rubber was torn on Driver side mount
> Transmission casing that the bracket for the dogbone mount broke.
> Two bolts fell out of the dog bone mount bracket. (they are 12mm X 1.25 X 90mm by the way)
> The third gets incredibly tight when I try to remove it so I was unable to take it out to figure out the bolt size which made for a simple bolt replacement being an order it, get the wrong part then order the right size process.


What I have done to address this
> 3m Window weld in all 3 mounts, definitely a much better feel, shifter barely moves. Slight increase in NVH, though not much.
> Customized the bracket for the trans mount using a smaller grade 8 bolt, not ideal but car was not driveable, if it breaks again I'll replace that piece.
> Added a smaller triangulated bracket to the trans to dog bone, you can see it in my building a brace brace article.
> Replace the 2 Bolts that fell out

[serega12]

I used 3m Window Weld, similar but a little different. I agree about the redesign, I have had so many issues with my motor mounts. If I filled them when I bought the car I think I would have avoided most of my issues.



What I have done to address this
> 3m Window weld in all 3 mounts, definitely a much better feel, shifter barely moves. Slight increase in NVH, though not much.
> Customized the bracket for the trans mount using a smaller grade 8 bolt, not ideal but car was not driveable, if it breaks again I'll replace that piece.
> Added a smaller triangulated bracket to the trans to dog bone, you can see it in my building a brace brace article.
> Replace the 2 Bolts that fell out

Would you do it with 94A stuff if you were to re-do it? If so, why/why not? I'm deciding whether I wanna buy new mounts or not for this...

[subachad]

I thought about using the polyurethane stuff but the window weld is only $15 from a local autoparts store and I needed it for some hood and roof glueing too. Next time I do it, I'll use the window weld again. I wouldn't mess around with the versions that don't require a caulking gun though as they are too runny. Also leave some air gaps for a little movement to keep noise levels down. If you don't there is still more give than the harder, likely louder, polyurethane.

That said, if you want to make a mold and produce polyurethane inserts to resale then polyurethane is the way to go.

[petrified.rabbit]

you could try one of these:

http://cgi.ebay.com/ebaymotors/PROTHANE ... 1860wt_962



even if it doesnt fit, you can cut it down on a lathe. but if its too small.. not much you can do.

[subachad]

you could try one of these:

http://cgi.ebay.com/ebaymotors/PROTHANE ... 1860wt_962



even if it doesnt fit, you can cut it down on a lathe. but if its too small.. not much you can do.

Use it where? How? This is not at all close to the current setup.