front motor mount

[jeg]

I just recently broke my front motor mount bolt. I plan on fixing it but i was wondering if this is a common problem for mtx's? And what do you guy recomend just getting a better mount?

 

[SnickterP]

two of my front motor mount bolts keep loosening themselves up on me, and its getting annoying. i think im going to locktight them. i have the shonut reinforced mount, so im not terribly worried about breaking it. my stock one however did break. i'd say go reinforced.

 

[Fine89]

Broken mounts are common and like other SHo parts - expensive! You can get reinforced mounts from www.shonutperformance.com

 

[93nighthawk]

Here are the Pioneer part #'s for the SHO. They are about 1/3 the price of OEM.

MTX

Front - 602971
Rear - 601173(solid) 611173(liquid filled)
Tranny- 621038

courtesy of lb-sho

Eric

 

[RStalveyARFF]

the MTX has NO liquid filled mounts. Use only Ford OEM or Sho-Nut reinforced mounts. When you replace the bolt btw, make sure it's a shouldered bolt, instead of one threaded all the way. Use grade 10.9 metric or higher. I've snapped 2 mounts personally, and about 3 or 4 bolts. The mounts in my car now will be virtually impossible for me to snap.....

 

[SHOLESS4NOW]

I broke my front motor mount bolt doing a burnout once. I had just had the mount replaced two days before. I pretty much concluded that they had over tightened it, and all the tourque that I put on it broke it. But I fixed it with a grade 5 nut and bolt from a local hardware store, and it cost like a dollar. Its a bit of a bitch to put in, its easiest to just go in through the plastic in the fender.

 

[LaTechSHO]

correct...the MTX does not have liquid filled motor mounts OE... however.... pioneer makes a liquid filled motor mount for the MTX and i have posted a picture of it on the forum before... as well as a picture of hte tranny mount.... both pictures were of PIONEER parts sitting on the floor of o'reilly auto parts. (work there)

pioneer offers a liquid filled version of our rear mount.... not a big deal... lots of aftermarket vendors offer variations on OE parts.. our front sway bar end links are an example... moog vs. trw.

at any rate.... on a previous thread... i posted the motor mount pictures... look at them and you tell me... is that it??

Louis

 

[SHOZ123]

I have my V8 chained to the subframe.

 

[RStalveyARFF]

SHOLESS4NOW:
I broke my front motor mount bolt doing a burnout once. I had just had the mount replaced two days before. I pretty much concluded that they had over tightened it, and all the tourque that I put on it broke it. But I fixed it with a grade 5 nut and bolt from a local hardware store, and it cost like a dollar. Its a bit of a bitch to put in, its easiest to just go in through the plastic in the fender.

I'd go and replace it with a grade 8 SAE or grade 10.9 metric bolt, or you're going to have to replace that bolt again. A grade 5 simply can't handle the stress the mount puts on it. The 3 bolts I snapped were 8.8 metrics (grade 5 SAE equivalent) FWIW.

 

[LaTechSHO]

the thread i was speaking of

http://www.shoforum.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=17;t=003590

 

[projectSHO89]

lb-sho:

Want to ask that Pioneer rep if they offer any sub frame bushings for the SHO?

Steve

 

[DougLee25]

Just so everyone knows... A higher grade bolt is only stronger in tension. When the bolt is put through the motor mount, and the motor is torqued up, the bolt is experiencing shear stresses. Buying a higher grade bolt does not necessarily increase the ability to resist shear.

Doug

 

[LaTechSHO]

i'm fairly sure i know the answer to that question.... as i have never seen anywhere where pioneer handles subframe bushings at all.... but at your request..i'll call and ask

don't quote me on this...but i believe that moog actually makes a "subframe kit"......nextime i'm at work i'll look into it

Louis

 

[RStalveyARFF]

DougLee25:
Just so everyone knows... A higher grade bolt is only stronger in tension. When the bolt is put through the motor mount, and the motor is torqued up, the bolt is experiencing shear stresses. Buying a higher grade bolt does not necessarily increase the ability to resist shear.

Doug

It doesn't necessarily increase the ability, but it's cheap insurance. The bolts from the factory were 10.9, why replace with less?