HOW TO: Install TRZ DogBone Rear MotorMount

[ZooMIN3]

I've searched, and could only come up with the how to EPOXY ones rear motor mount, and haven't come across one how to on the rear motor mount.
If I over looked it, and posted another how to, bite me... lol j/k

This install was a breeze; took at least 15 minutes to get it in once you have your car on jackstands. So easy, a caveman can do it!!!

On with the install.

Tools You'll Need:
Ratchet
17mm socket
Jackstands
Floor jack
wheel chocks
Lock-Tite
20-30 minutes of nothing important to do! lol
Optional:
Mechanix Gloves
Eyeball Protector READ: Goggles

Last Minute Info:
Torque Specs: 65-80ftlbs Thanks to redrocketz at ProtegeGarage for the info! (headbang)

On with the install.... for real this time!

First, you'll need to chock your wheels in the rear. SAFETY IS PARAMOUNT
Don't mind the brake dust, I haven't washed my car yet.....(hand)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3283.jpg

Next you'll want to get your car up on jackstands, do that to both sides as pictured here... you'll need the ground clearance to get underneath your car if you're wondering why. (yes)
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3284.jpg

After that, you'll need to crawl underneath, with your ratcheting tool, and socket in hand... and undo this bolt,
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3289.jpg
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3291.jpg
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3294.jpg


then undo this next bolt.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3293.jpg
Pop them out, and voila, you're halfway finished with the uninstall of the stock mount.


Don't worry about supporting the engine, or the tranny portion where the mount is attached to. The engine will not fall from the mount, I've checked, I even used my floor jack to make sure it doesn't fall when I took out both of the bolts that held the mount in place. I moved the jack when I was pretty sure it wouldn't fall on my grape, so for that added insurance, use it; then when you're sure it won't fall; you can move it. (You can skip this part altogether if you want, the using of the floor jack to hold the engine up.) I will not be held liable if your engine falls and makes a pancake out of your head though....)

Ok, now that you have the bolts removed, you'll want to pull the tranny towards the front of the car as much as it'll go, while pulling on the mount at the SAME time, yank it out of its perch.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3305.jpg
(same pic used further below since my camera died here..got fresh batteries now though!)

Pull the mount at a downward angle, maybe 45 degree angle.... or somewhere along those lines, and wiggle it out.... be careful, don't pinch a finger or anything. This is where the mechanix gloves come in handy, so you don't get all banged up. lol
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3296.jpg


Here are the mounts side by side. Nice, eh?
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3300.jpg


Ok, on with the show.

Remember when you pulled that mount out? The perch where the STOCK motor mount sat will be the starting point of inserting the TRZ Dog Bone mount.

First, you'll want to insert the mount ALL THE way into the perch. That'll give you enough clearance to push the rest of the mount into position where the bolts will be inserted into. I'm pointing at it here, it's hard to see since its all black and dark in there, but you'll see it when you're under your car.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3307.jpg

See the way I'm pointing? That's the direction you'll want to pull the tranny in order to get the DogBone in there with enough clearance.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3305.jpg

Now pull.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3304.jpg

And you should have enough clearance to feed the mount into position here.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3302.jpg

almost in.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3310.jpg

There, now it'll go in perfectly. Good job!
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3306.jpg


Now once you have the mount in; this is where you'll want to put lock-tite on your bolts before inserting them back into their resting place.

If you look on the bolts when you took them off, you'll see some risidue where "lock-tite" was put on from the factory. I just cleaned off what I could, and put on some new lock-tite in those areas. Then insert, and tighten. Like so.
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3311.jpg

With fresh lock-tite:
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3313.jpg

I'm not sure exactly what the torque specs are for this bolt, but I tightened it as tight as it was when I took them off. You'll be able to figure this out on your own when you do this.

Here is the finished install!! If you made it this far, congraulations!!!

http://i61.photobucket.com/albums/h69/Focusondz/DSCF3314.jpg
http://i61.photobucket.com/albums/h69/Focusondz/DSCF3315.jpg

The last step is to clean up, and take your car off its jacks.... don't forget the wheel chocks when you back up!! lol

Take your ride for a spin, and enjoy the new found torque that was lost with the stock motor mount!!!(headbang)


Hope this helps anyone else who was wondering if this is easy, or what not.

On a scale of 1-10, 10 being hard, I rate this a 0, 0 being So easy, a caveman can do it. lol

If I forgot anything, or anyone have any questions, let me know!! I'll be posting another post soon on how the ride is.... By the way, I have the stiffest mount offered by TRZ....lol

-J

[Hirudin]

...
On a scale of 1-10, 10 being hard, I rate this a 0, 0 being So easy, a caveman can do it. lol
...
HAHA! Nice writeup, thanks a ton! (My mount, the softer TRZ dogbone, just came today.)

[Captain KRM P5]

good write up :)

[ZooMIN3]

Thanks, guys! Hope it helps you out Hirudin.

By the way Ken, if you want; you can print out these steps, and send them out with each Dog Bone you send out! lol or just direct them to this post lol

-J

[Vindikacione]

Great install!

Dumb questions:

1) Is this the mount that required the recall?
2) Does anyone know the correct torque wrench setting?
3) Has anyone rechecked theirs to see if the delrin cracked or bolts got loosened? I would think that once the delrin has settled, the bolt might need to be tightened.
4) What effect does it have on the other mounts, if any?

Thanks in advance!

[ZooMIN3]

Great install!

Dumb questions:

1) Is this the mount that required the recall?
2) Does anyone know the correct torque wrench setting?
3) Has anyone rechecked theirs to see if the delrin cracked or bolts got loosened? I would think that once the delrin has settled, the bolt might need to be tightened.
4) What effect does it have on the other mounts, if any?

Thanks in advance!

Thanks for the props. :-)

As for your questions, there's no such thing as dumb questions. lol

1) I believe the motor mount recall was for the one under the battery box.
2) I wish I knew, "search" is useless..... I just guesstimated.
3) I'll be doing that undercarriage check next weekend, maybe a good week wil be enough to let things settle.
4) I'd imagine it doesn't put much stress on the other mounts since it holds the motor pretty much still just about. Granted there are vibrations when starting, and downshifting. Regular driving doesn't seem to be affected however. I could be wrong though. Let's hope not! (boom06)

Give me a few, and I'll post some info under my other link with the reviews so far.

-J

[ZooMIN3]

Click Here for the review.

"The Review" (http://www.mazdas247.com/forum/showthread.php?t=123688149)

[MS38449]

No the recall was on the other side of the car. Mazda Had pictures of the break. After blah blah date ther is no recall. They said they did mine but I can't see any deferents or dot on the new 1

[ZooMIN3]

No the recall was on the other side of the car. Mazda Had pictures of the break. After blah blah date ther is no recall. They said they did mine but I can't see any deferents or dot on the new 1

w3rd. thanks for the clarifaction. :-)

[subparpunk03]

So I also just got done putting in my delrin TRZ....

I dunno man, mine is sort of making some clunking noises in addition to vibrations, I'm not too happy about that. Maybe I didn't tighten things as much as I should have, or switched the bolts around or something.

I'm gonna get back under there and see if I can get it fixed up, but otherwise I think this thing might only be going on during track days :(

[Nutari]

So I also just got done putting in my delrin TRZ....

I dunno man, mine is sort of making some clunking noises in addition to vibrations, I'm not too happy about that. Maybe I didn't tighten things as much as I should have, or switched the bolts around or something.

I'm gonna get back under there and see if I can get it fixed up, but otherwise I think this thing might only be going on during track days :(

turn it over. :)

[ZooMIN3]

So I also just got done putting in my delrin TRZ....

I dunno man, mine is sort of making some clunking noises in addition to vibrations, I'm not too happy about that. Maybe I didn't tighten things as much as I should have, or switched the bolts around or something.

I'm gonna get back under there and see if I can get it fixed up, but otherwise I think this thing might only be going on during track days :(

Your's make clunking noise at start up, and shifting into first?

I'm sure it'll gradually decrease as you drive more with it installed. I don't hear that clunking noise much anymore, just barely when I turn on my car. It'll just vibrate a tad when I shift into first. If anything, do the epoxy mod with your stock mount, and like you said; throw on the delrin when you hit the tracks. As for mine, I'm happy with it.

-J

[redrocketz]

well you need to torque the thing to between 65-80 ft/lbs when installing it. I would check that first if you have any other problems please feel free to call us
(847) 247-5090 (10-8 central)

[sleeper3]

Nice write up!!!

I hope you washed your car after the install kekekekekeeee

also, as for the torque setting, judging by the hardware, I'd say the torque is not overly critical. The tendency would be to over tighten, and since there is locktite on the bolts, you really don't need to flex your huge manly muscles on this one. as long as you're nice and snug and tight, you're fine. no need to break out the torque wrench. that's for clutches and head bolts and stuff that actually needs to be on spec with tension.

my two cents

[ZooMIN3]

thanks dude!

oh yeah, i def. washed my car!! it's black mica again, and not charcoal colored.. lol

[sleeper3]

no problem. I spun wrenches for a land rover dealership for a while, and the only thing we really torqued down to spec were the wheels and the occasional "more in depth" job. if we weren't going deep, you get to the point where you can gauge just about all of the bolts. even the plugs came with crush washers and you could feel when they were tightened down properly. Like I said, overtightening is usually the problem, so as long as you don't go nuts, everything should be gravy. I'm sure when I start modding the speed, I'll be making many threads like this. again, good job on the explanation and the plethora of pictures. you can never have too many!

[ZooMIN3]

lol i agree with the pix!! i hope to read up on your installs soon!

perhaps a turbo upgrade or something? lol

[Jays07MS3]

Thanks for the write up ZooMIN! I should be getting my mount in about a week so I'll definitely be using your guide.

[ZooMIN3]

Thanks for the write up ZooMIN! I should be getting my mount in about a week so I'll definitely be using your guide.



cool!! if you need help, let me know, i can help you install...you'd just have to drive down to miramar from escondido...lol a few beers, and we'd be good to go! lol

-J

[Jays07MS3]

cool!! if you need help, let me know, i can help you install...you'd just have to drive down to miramar from escondido...lol a few beers, and we'd be good to go! lol

-J

Thanks man, I appreciate it. But it looks so damn easy that I'll probably just knock it out at home. But maybe the next mod I'll have to stop by ;) There's also Ballast Point Brewery right near you so I can stop by and get some of the good shit as well :)

[ZooMIN3]

Thanks man, I appreciate it. But it looks so damn easy that I'll probably just knock it out at home. But maybe the next mod I'll have to stop by ;) There's also Ballast Point Brewery right near you so I can stop by and get some of the good shit as well :)

lol yeah, it is E-Z... I just wanted to do the install again...lol

everyone knows, So easy a caveman can do it...lol

Hey by the by, you goin to the autocross at Qualcomm on the 9th? I think there is a practice session on the 8th too... no entirely sure. I should be going, let me know bro.

-J

[TRSpeed3]

installed it last night it took me about 15-20 min...it was a cake walk...no heres the review....Car is noisier inside the cabin, i get vibes on idle and when i let the motor down shift...car hooks like its on a train track and pulls insanely hard...

[ZooMIN3]

installed it last night it took me about 15-20 min...it was a cake walk...no heres the review....Car is noisier inside the cabin, i get vibes on idle and when i let the motor down shift...car hooks like its on a train track and pulls insanely hard...

NICE!

[Jays07MS3]

lol yeah, it is E-Z... I just wanted to do the install again...lol

everyone knows, So easy a caveman can do it...lol

Hey by the by, you goin to the autocross at Qualcomm on the 9th? I think there is a practice session on the 8th too... no entirely sure. I should be going, let me know bro.

-J

Hey sorry about not getting back to you about the autocross. I didn't see this post til now :( Did you go? If so, how was it?

And I install the mount this morning. Thing is awesome! Install was a breeze. Barely any additional vibes but the car feels a lot more "raw" for lack of a better term. I love it. I can barely tell the difference between AC on/off. I still miss the occasional 2-3 shift when WOT. Guess I'll have to invest in a short shifter.

Thanks for the write up and pics!!! Happy Zoomin!

[ZooMIN3]

Hey sorry about not getting back to you about the autocross. I didn't see this post til now :( Did you go? If so, how was it?

And I install the mount this morning. Thing is awesome! Install was a breeze. Barely any additional vibes but the car feels a lot more "raw" for lack of a better term. I love it. I can barely tell the difference between AC on/off. I still miss the occasional 2-3 shift when WOT. Guess I'll have to invest in a short shifter.

Thanks for the write up and pics!!! Happy Zoomin!

Sup dude, congrats on the install. I just saw this post..lol I don't know why the posts don't stay bold when you check them out from the forum thread section. hmm....

In any case, glad you're enjoying the new mount. Delrin or poly?

As for the autocross, nah didn't make it due to the rains... But i did end up going to the Car and Coffee shin dig at the Mazda HQ. It was a nice turn out. About 8 Mazda3s (two of them were Speeds), and a red P5. We were able to see the DG MotorSport Speed3. So yeah, there should be another meet this Saturday, would you like to hit this meet up? It's about a 70- 80 mile shot from San Diego, and maybe, maybe 50-65 mile shot from Escondido, i think. If you haven't been, going once wouldn't hurt. Have to leave in the morning though, like 530ish. PM me if you're interested.

-J

[discharmingman]

Where the heck did this thread go? It's not in the How To section anymore. I had to find it through my subscribed threads...what's up with that?

[ZooMIN3]

Where the heck did this thread go? It's not in the How To section anymore. I had to find it through my subscribed threads...what's up with that?

lmao! It tends to find its way through the other pages since other threads/posts come up (rei)

[MS3077]

I'm picking up my SU rear motor mount tonight. Thanks for the write up!

[thanotosq]

Thanks for the write up ZooMIN! I should be getting my mount in about a week so I'll definitely be using your guide.

Holy crap! I just came to this thread to say the same thing... so... bump for great minds thinking similarly...(boom07)

[fructus]

Installed my TRZ poly mount today. Before I took the bolts off I checked the torque on them, and it was somewhere in between 85 and 90 lb/ft.

[Cookim6]

Install from start to finish was about 10 minutes. AS far as work goes this was the easiest thing I have done. I couldn't believe it.

For $100 and 10 minutes of my time, this is the best mod ever!

[SPEED305]

excellent write up...
install like you said was a breeze, 10 minutes tops.

[ShadowSolution]

just finished my install of my TRZ poly mount.
awsome product!
the vibrations feel great in my opinion!
i swear when i first start the car it feels like my car has 700whp under the hood!
(i can dream cant I?)
it just makes the car feel meaner and more aggressive.
great mod!
thanks for the write up!

[ZooMIN3]

nice job everyone! glad you all could use this write up! lol

[turbo23]

Installed mine today, easy install as all have said. I dont feel the vibes at idle, unless the AC is one. Viber are felt around 1900rpm or so, and you can slightly feel them around 3k, but just normal. There is alot more vibes then stock, but it does what I expected it to do, and im sure once it breaks in alittle the vibes will be less. BTW I have the poly, personally I wouldnt recommend the derlin to street drivers, and this is from a solid mount FC RX7 driver.

[CWPspeed3]

I just installed my TRZ poly mount, your writeup was very helpful and install was a breeze, didnt take more than 20min. Helpful hint, dont replace the motor mount when the trans is hot...

[AjaxUSA]

can those vibes you guys are talking about damage the car any? I take it that as long as we can handle the vibes, we can also use the mounts for everyday driving....yes?

thanks for the write up.

[CWPspeed3]

The vibrations are really minimal, they aren't going to rattle your car so much that every screw comes undone and your car falls apart. I would be more worried about damage to the car by not having a stronger motor mount.

[turbo23]

just a update. As I said the vibes when first installed were very noticable. Now that ive driven 500-1000miles and things are fine, the mount is broken in, and the vibes are very very low. This again is with the poly mount, for anyone who has woes about replacing their mount, shifting is improved 100%

[Speed3Rookie]

Just installed mine too... (nana)
Vibes...what vibes? :)

[AjaxUSA]

so even after the vibes go away.....how about when the a/c goes on?

[CWPspeed3]

I never really noticed extra vibes with the ac to begin with, I've only had mine in a week and maybe 100 miles so its not even broken in yet.

[clos561]

delrin makes the car seem like it can go 9sec quarter mile, fun to drive

[CosmicBlue71]

I know this is supposed to be an easy install, but i can't for the life of me get the new mount back in. I have tried for an hour and there is not enough clearance to get the new mount in. I need some help

[Speed3Rookie]

You just have to push the tranny/engine back some. Try it...it'll work.

[CWPspeed3]

Its kind of hard to explain but its not too difficult, try pushing the mount in and push the fork shape off to the driver side then push the trans toward the front of the car and tilt the mount in. Hopefully that makes sense.

[lestat13]

Hey, I installed inserts a while ago but didn't use locktite, do I need to jack it up immediately and redo.... is my motor in danger of dropping? I torques both bolts to 70 ft/lbs.

[ZooMIN3]

You may just want to take a look at the bolts after several hundred miles of driving...just to be safe, to see if they haven't backed out or anything. If you feel you should locktite it, then go for it, I'd recommend it though.

-J

[kgb]

Would you guys recommend putting the frame bolt on first before the tranny bolt?

[lestat13]

I put lock-tite on my bolt..... but it was ALOT easier to get out the second time. It was still at 80 ft/lbs, but instead of wiggling the motor around to get the bolt to slide out, I just ratched until it came out. Anything to be worried about??

[ZooMIN3]

To KGB: I put in the the frame bolt in first, then just guided the tranny side in next.

To Lestat: There shouldn't be anything to worry about. Ratcheting the bolt out is just another method without using a regular box end/crecent wrench. =) Besides, ratcheting tends to be faster sometimes.

[ZooMIN3]

lol

oops talk about bad grammer... where's the edit button? =\

[kgb]

To KGB: I put in the the frame bolt in first, then just guided the tranny side in next.

To Lestat: There shouldn't be anything to worry about. Ratcheting the bolt out is just another method without using a regular box end/crecent wrench. =) Besides, ratcheting tends to be faster sometimes.



Thank you...I did the opposite and with all I have read and the feel of my car, I will probably redo the order of things....even if it just makes me feel better (2thumbs)

[lestat13]

To me it just reasons that if it is easier to get it out the second time, I messed something up and my motor is going to fall out. I know it probably won't, but this is the first car I am paying more than about 2 grand for and I wanna make sure it lasts!!!!! By easier, I not only mean ratcheting, but I could ratchet the bolt out, last time I had to ratched and push the motor forward to get it to drop out. Thoughts?

Thanks for the vote of confidence!

[ZooMIN3]

No Prob kgb. =)

Lestat, if it came out easier the second time, you may want to ensure that the loc-tite covered the threaded portion that actually stays in contact with the actual threading of the frame. I know some of the threading of the bolt actually goes past the frame's threading. Or it could be that you didn't use enough loc-tite? Not entirely sure, but it should take some umph to "break" it loose, and then ratcheting it out shouldn't take much effort.

[lestat13]

I took it out a second time because I didn't put lock-tite on the first time. The second time was to put the lock-tite on. I am just trying to cover my ass.

[ZooMIN3]

oh...lmao now I see.. =\

[Zimmer]

installed today thanks for the write up. The most difficult part was moving the tranny fwd. I used a long slender piece of wood just to gain some leverage with one hand to move it forward while maneuvering the mount out with the other a little unconventional but it worked. It seemed easier to get the dog bone in this way too. Didn't use loctite instead I used anti-seize compound on the threads so I can remove it if needed. I've seen others before snap bolt heads trying to remove. I plan on checking the bolts to make sure nothing relaxed and became loose.

Immediate impressions. First at start up ... I now know what you all mean ... its like I woke her up. Seconds shifting 1st to 2nd was like spreading butter. I almost felt like I was driving my accord again.

[souper]

Use a jack to rotate the engine. If you want to rotate downward - position the jack towards the front of the car (between the front bumper and the oil filter). This will make the uninstall and reinstall of your mounts much easier.

[speedsports]

Great write up! We used the write up on Sunday at it was definetly a breeze. If you have a friend, the best way to get it out is one pulls on the transmission while the other pushes the stock mount out.


Thanks again!

[ZooMIN3]

^^ Thank u! and your welcome! Glad you found it useful! What are your thoughts on the mount?? Let us know!!

=)

[Abilor]

Just to be certain, could this be done just as easily with ramps instead of jacks?

[twowings]

Yes, I installed mine using ramps....15-20 minutes and you're done...

[ZooMIN3]

^^ what twowings said! =D

[almberg32]

nice write up. i plan on doing this within the next month. (cool)

[ZooMIN3]

^AWESOME^

have fun, and good luck with the install! report back in when you get'er done!

[Jasnall]

Spot on! Used this to do my CS inserts. I used scissor jack method cause I didn't wanna mess with the bolts on the tranny. Either way super easy, great write up!

[DaleNixon]

installed today thanks for the write up. The most difficult part was moving the tranny fwd. I used a long slender piece of wood just to gain some leverage with one hand to move it forward while maneuvering the mount out with the other a little unconventional but it worked. It seemed easier to get the dog bone in this way too. Didn't use loctite instead I used anti-seize compound on the threads so I can remove it if needed. I've seen others before snap bolt heads trying to remove. I plan on checking the bolts to make sure nothing relaxed and became loose.

Immediate impressions. First at start up ... I now know what you all mean ... its like I woke her up. Seconds shifting 1st to 2nd was like spreading butter. I almost felt like I was driving my accord again.

This is pretty comforting because I didn't use loctite when I installed my CS MM inserts. I torqued the bolts to 70 ft. lbs. I'll just give them a check when I do my oil in about 1000 miles. It still feels really solid.

[dandydaniel]

dude, OP, how the hell did you get your car on the jack stands? for the love of god I can't even get the damn car up...

[ZooMIN3]

you need to jack up your car, and put the jack stands on the steel lip that juts out. the jacking points i use are right near the front of the vehicle. if you look where my jack stand is located on the picture on the front page, that's the general area you want to jack up from. oh yeah, make sure you place chock blocks on the back of your car... ;-)

[Sport6]

This is pretty comforting because I didn't use loctite when I installed my CS MM inserts. I torqued the bolts to 70 ft. lbs. I'll just give them a check when I do my oil in about 1000 miles. It still feels really solid.

I didn't use loctite either.. but will keep an eye on it everytime I am under the car.

[speed3guy]

I was amazed at how easy this install was! Took me like 20 mins with jacking up the car, doing the install and lowering the car back down.