motor mount questions

[typhoon noob]

Hi all,

I need new motor mounts installed on my Typhoon, I'm trying to decide on poly or solid and I have a few questions.

1. Do the stock mounts break under normal driving conditions, or when people are launching them?

2. For people that have the solid mounts installed, are there now harsh vibrations when driving?

3. Did you install a poly transmission mount in conjunction with the solid motor mounts? If so, did this eliminate any harsh vibrations caused by the solid motor mounts?

4. If I'm not launching the vehicle, will the poly mounts be a better option for driveability?

5. If I install the poly mounts, should I also install the poly transmission mount?

 

[Quickstop [UK]]

Re: motor mount questions

Hi all,

I need new motor mounts installed on my Typhoon, I'm trying to decide on poly or solid and I have a few questions.

1. Do the stock mounts break under normal driving conditions, or when people are launching them?

2. For people that have the solid mounts installed, are there now harsh vibrations when driving?

3. Did you install a poly transmission mount in conjunction with the solid motor mounts? If so, did this eliminate any harsh vibrations caused by the solid motor mounts?

4. If I'm not launching the vehicle, will the poly mounts be a better option for driveability?

5. If I install the poly mounts, should I also install the poly transmission mount?

1. If they're original, chances are they perished and will die soon - 20 years almost!!

2. I have them and no, nothing to worry about.

3. Yes, solid mounts = poly trans mount. No idea, never ran solid trans mount as it can cause a cracked trans

4.. You need the heat shields if you do install poly or they'll melt.

5. You don't need to but why not eh?

6. You never EVER want to do this job again so I suggest solids.

7. In the meantime, why not get an engine tie down strap so that if your stock mounts let go, you have the strap as insurance.

8. Seriously. You never EVER want to do this job again so I suggest solids.

 

[turbodig]

Re: motor mount questions

Depends on the type of person you are.

If you don't like vibration at all, go back to the stockers.

If you can handle a little vibration, go to the polys. As was mentioned, you need good heat shielding.

I have polys, and I don't care for them... there's way too much body vibration and steering wheel vib. Feels too much like a race car. Be advised, they also raise the motor slightly, as do the solids.

The solid mount trucks I've been in are even worse. Unless you have a glass-smooth engine balance, you're going to notice it.

A lot of guys apparently don't care, though, so If you're one of those, you have more options.

EDIT- one thing to add; I've never seen a broken stock mount with a tie-down strap on the motor. This, in my mind, is the best of both worlds.

 

[dgoodhue]

Re: motor mount questions

I did poly's they start to melt even with heatshielding, I now have solids. If you do use rubber mount, buy the GM originals. I know alocal that bought the local part store rubber mounts and they failed within a month (I think a couple boost launches), the motor mounts are too hard to be doing regularly.

 

[typhoon noob]

Re: motor mount questions

I'm paying my local shop to do this install, because of how much of a pain I've heard this is to do. For the heat sheilding, is there stock heat sheilding to be reused or is this something that I need to buy in addition?

Dave, did your solid mounts give the same harsh vibrations as your previously installed poly ones?

 

[wildphil]

Re: motor mount questions

I have solids right now on one of my tys and will be keeping them. I can barely feel the vibration.

But on my other Ty it has a tie down with rubber mounts. I should have done this to the other one. No vibration at all. I don't see why you could not place a tiedown and just leave the broken mount in place.

I have not done this myself. But maybe others can tell you if this is ok.

 

[typhoon noob]

Re: motor mount questions

This is why I wanted to get new mounts. Currently the alternator has a piece of metal with a ratcheting strap going through it and holding it down on the frame. I wanted to get rid of the unsightly ratchet strap and get the solids installed until I heard about the inherent vibrations. Right now it's idling pretty rough, so I imagine if I put on new mounts first this thing is going to rattle like crazy until I get it running much smoother.

It sounds like I should get the datamaster scan tool and get the motor running in top shape before I even get the new mounts. Really something I never would have thought of until getting this info. Thanks so much you guys, you have no idea how much this helps me prioritize my spending.

 

[nallj92]

Re: motor mount questions

stock motor mounts and tiedown club here, but of course i am biased

 

[bezerk]

Re: motor mount questions

why not upgrade your turbo side to solid, and leave the otherone untouched.
i have solids on mine, no real vibration isseus.

 

[bezerk]

Re: motor mount questions

for stock motormounts being really great..i had atleast 4 trucks, and all of them mounts were ****ed.

 

[wildphil]

Re: motor mount questions

Probably not. Stock mounts last about 7-10 years. So they have probably been replaced at least once.



Engine mounts last longer than engines do. Chances of having to replace a mount with the engine in the truck is very slim. I've replace many mounts when the engine is out of the truck for other repairs. But only a couple with the engine installed and serviceable. And these weren't SyTy's.

And solids break too. It's called metal fatigue. Mounts, mountings, bolts, blocks. Lots of stuff. And you have to live with the vibration. IMO, solids are pretty dumb in a street-driven truck when the OEM rubber mounts last longer than the engine does.

You must be hard on engines Dave if your mounts are outlasting them. Just kidding. I know you really do drive your truck and put a few miles on it.

While I hardly feel any vibration with the solids. I would not use them now and use the strap on the alt to the frame. You can get one with a turn buckle instead of a ratchet. It does the job and is so much easier. But if you are can not live with the clamp then I would do the solids. But I tend to over due things.

But Dave is right. Most of the time these engines don't stay in these trucks very long and the rubber mounts far out last the engine.

 

[BigBadSmoosh]

Re: motor mount questions

i went through this recently..

i went to solids and the vibration was fine around town on the highway it felt like the truck was falling apart..

I put in a new tranny mount (rubber) didn't make a difference..

i then replaced just the drivers side solid with a poly, it now idles/rides very very smooth, all the time and i'm happy.

of course i haven't checked on the poly mount yet to see if it has started to mount, but i do plan on putting heat shielding around it.

the job itself is quite difficult, but once you have done it, doing it again isn't nearly as hard.

 

[turbodig]

Re: motor mount questions

Pic of my motor mount shielding with poly mounts.

These are Renz's stainless sheilds with aluminized fiberglass cloth doubled over and used for a bit extra protection.

 

[Ty 1885]

Re: motor mount questions

Pic of my motor mount shielding with poly mounts.

These are Renz's stainless sheilds with aluminized fiberglass cloth doubled over and used for a bit extra protection.

That is a GREAT idea ! Thanks:tup:

 

[typhoon noob]

Re: motor mount questions

That poly setup looks nice. Does this sheilding prevent the mounts from melting whatsoever? What is the difference between the Renzfab heat sheild and the stock one? Does the stock one not fit with the poly mounts?

 

[d80229]

Re: motor mount questions

i just bought a 93 ty it needs the motor mount on the driver side done based on all your conversations i think im just gonna do the stock mount with the strap as insurance is there any suggestions on how to do this ???