The Official Diff Mount Thread

[arcticfire]

I've asked TT about the bolts but I'm afraid they haven't replied. I'm happy to measure mine when they arrive, hopefully in a few days.

[arcticfire]

Here's lots of photos with some measurements.

https://www.dropbox.com/sh/e7os7byx1rhf6bx/WPFGQlVlYh

[mazda_speed_6]

Originally Posted by MS6FL Great sticky! Just want to add for those of us that have trashed our rear..... -Front Diff case-------------------------------Part#MA2727681 -Bearing--------------------------------------Part#996068206 -Oil Seal--------------------------------------Part#M05427165 -Front Diff mount bolts(the 2 that sheer off)---- Part#H26034037A (I Used 12mm 1.25 pitch Grade 8.8 bolts) -Rear Axle Seals-------------------------------Part#M0A727238A -Bolts (The ones that secure the front diff case to the rear) -------------------------------------Need 2 of Part#M05327604 (Didn't use these as mine were a lil shorter. Dunno why) ---------------------------------------and 6 of Part#907812830 (Only used 4 as the SURE mount came with 2 long ones you need) Pic of mount on the diff case:

Is this everything that is needed for this install?

[Dizzy Turbo]

You might need a couple wrenches

[mazda_speed_6]

Haha I know that.. I'm asking about parts

[KevinK2]

I guess TT did not come through with their Front Mount?

Unless someone had a problem, the Sure seems fine, and tons better than OEM. Note everyone thinks those 2 side bolts shear off ... NOT TRUE. They fail in bending fatigue, as the offset oem mount allows a prying action at the bolts during hard acceleration, and reversed prying when stopping hard. The front of the diff/coupling wants to go up when accelleratig, and down braking or letting off gas. So it's actually reversed bending fatigue.

Although the Sure bolts are a strong and tough Gr 8.8 (like US Gr 5) , do not exceed the OEM torque spec, which is likely based on the strength of the threaded hole in the case.

Fasteners, bolts, screws and more from Atlantic Fasteners | Hex cap screw strength comparison

.

[KevinK2]

In all cases, the upgraded front diff mount replaces the bubble-gum soft bushing with a hard suspension type bushing material, with relatively no give. This can makes install difficult if the rear mount has similar hard bushings.

If it were me, with the advantage of machine shop experience and access, I would jig it and drill lateral holes in the urethane with brad pt drills, evenly spaced to create about 5 "spokes" in the solid bushing. This is similar to the oem design, and softens up the stiff bushing a bit. Definately not an essential mod.

.

[KevinK2]

Originally Posted by mazda_speed_6 Is this everything that is needed for this install?

One thing I don't understand about T-Case reassembly is setting the lash at the bevel gears. This is typically done with shims, like at the rear diff. With correct lash, a bluing test would show contact at the pitch diameter of each gear.

At a minimum, there should be some type of lash specification. Hard to believe you can just bolt it together, when bevel gears are involved.

.

[Mazd1222]

Installed reae diff yesterday only took 3 hours.
It makes a huge difference car feels more grounded, and no more jerking in the first two gears
gears. My launches feels a whole lot better well worth it

[ItsNox]

Originally Posted by Mazd1222 Installed reae diff yesterday only took 3 hours. It makes a huge difference car feels more grounded, and no more jerking in the first two gears gears. My launches feels a whole lot better well worth it

Could you give some details as to how you did it so quickly? I've read it taking a lot of people 6+ hours and one of our local guys told me he almost gave up lol. Any input you have to speed it up/make it easier would be appreciated - won't be long until I get the rest of my mounts.

The jerking in the first 2 gears irritates me. I'm surprised to hear that rear diff helped that so much

Sent from my SPH-L710 using Tapatalk

[Hargarbl]

Damn, 3 hours must be a record for those mounts. I replaced mine a couple months ago due to my diff trying to twist itself out of the car since my bushings were gone. I think it took me and a buddy closer to 6 hours to do on jack stands. But I do have to say, like mazd1222 said it does feel much more planted, it's kinda hard to explain, basically it feels like you're getting a lot more power to the ground rather than losing it due to the diff moving all around.

[Mazd1222]

Nox did you get the email I sent you?

[93GTS]

Originally Posted by Mazd1222 Installed reae diff yesterday only took 3 hours. It makes a huge difference car feels more grounded, and no more jerking in the first two gears gears. My launches feels a whole lot better well worth it

Which mount you use? I'm pretty stoked to get my lift wired up this weekend and tackle my exhaust, downpipe, rsb, and both diff mounts...

[Mazd1222]

Did the rear diff mount not the front one

[Mazd1222]

Sure rear diff mount dreadnaught

[Mazd1222]

Much better mount bushings were shot.

[ItsNox]

Originally Posted by Mazd1222 Nox did you get the email I sent you?

Negative I did not. I checked my gmail and my PMs - nothing. Could you PM it to me or post it here? I'm sure others would appreciate it as well

Thanks bud!

Sent from my SPH-L710 using Tapatalk

[Mazd1222]

Nox this the order I followed. I used the corksport instructions from there website. First I pb blasted every bolt and not that needed to be removed a day before
before. Tools needed 4 jack stands 3/8 torque wrench
14mm socket 17 mm socket 17mm opened end wrench
Impact gun breaker bar propane torch
1st remove exhaust from downpipe back
2nd remove drive shaft bolts from rear diff
3rd remove drive shaft
4th remove electrical connectors
connectors
5th remove sway bar endlinks
6th remove sway bar brackets
7th remove front diff mount bolts,and support it with the jack stand
8th remove rear diff bolts and lower rear diff
9th remove rear diff mount from differential
10 reverse order

[ItsNox]

Originally Posted by Mazd1222 Nox this the order I followed. I used the corksport instructions from there website. First I pb blasted every bolt and not that needed to be removed a day before before. Tools needed 4 jack stands 3/8 torque wrench 14mm socket 17 mm socket 17mm opened end wrench Impact gun breaker bar propane torch 1st remove exhaust from downpipe back 2nd remove drive shaft bolts from rear diff 3rd remove drive shaft 4th remove electrical connectors connectors 5th remove sway bar endlinks 6th remove sway bar brackets 7th remove front diff mount bolts,and support it with the jack stand 8th remove rear diff bolts and lower rear diff 9th remove rear diff mount from differential 10 reverse order

Big thanks for this. I've got it saved for when I do this in the coming months.

Sent from my SPH-L710 using Tapatalk

[KevinK2]

Much better mount bushings were shot.[/quote]



That OEM bushing is not broken. What you see are "stops" between the 3 spokes. I think the oem rear diff mount , with 3 spoked bushings, are very much like that when new. Note the last picks of the new oem mounts on this page:

-mazdaspeed-6-diff-mounts-

For the normal, moderate driver, Mazda designed the rear diff to "float" supported by these very soft, elastic, spoked bushings. Great for low noise, and easy assembly. Durometer may be too low to measure. And when the "spokes" are fully compressed, there is hard stop to any more deflection.

But going to ~80 durometer solid "race suspension" urethane bushings is overkill, IMHO.
Sure had the right idea in offering 2 or 3 choices in mount bushing hardness, but still not soft enough.

Example, assume the bushing deflection is .4" for the oem diff bushings, on a drag strip start with 400 hp. At 80-90 duro bushings, that might drop to .04" deflection, and a large increase in shock loading on the gear train. With CP-E 60 durometer bushings on their rear diff mount, deflection may be .1 inch. This reduces noise, absorbs some energy on a hard start, and makes assembly easier.

.

[Dizzy Turbo]

I was under the impression the Cpe used rubber bushings not urethane?

[Mazd1222]

Dude I'm just glad I got rid of it car drives much better.

[KevinK2]

Originally Posted by Dizzy Turbo I was under the impression the Cpe used rubber bushings not urethane?

That could be. Both elastomers ( rubber, neoprene, etc ) and urethanes are available at 60 durometer. I didn't think CP-E says which they use.

.

[ADHDAdditiv]

After searching a bit, I couldn't find anyone who's actually installed the bushings.
Anyone using them?

[Gitcherex]

**update for 2015**
New prices/links and addition of Corksport mount
REAR DIFF REPLACEMENT BUSHINGS:

Turbine Tech Rear Diff bushings: $75.25
Turbine Tech Inc.

REAR DIFF FULL MOUNTS:
Corksport MS6: $239.99
CorkSport Mazdaspeed 6 2006-2007 Rear Differential Mount

CP-E xflex MS6: $282.45
CPE xFlex? Rear Differential Mount for Mazdaspeed 6 #MZXM00009B - Revolution Performance Motorsports!

SURE Dreadnaught MS6: $255.00
SURE Motorsports Dreadnaught Rear Differential Brace: Mazdaspeed 6


REAR DIFF (front mount)

SURE Juggernaught (front) MS6: $245.00
SURE Motorsports Juggernaught Differential Brace: Mazdaspeed 6

Turbine Tech (Front) MS6: $289.00
Turbine Tech Inc.

[odmanjd]

Update: I've been looking into a tt diff mount. Turbine tech Inc is now owned by new age auto. I've only just begun looking into them but I didn't see them on the approved "legit" dealer list for mazdaspeed parts? Can anyone confirm they are legit and have the tt mounts for the same price as befor? I dont want to drop 400 through street unit when I go to buy...

Sent from my SM-G920P using Tapatalk

[Gitcherex]

Ive worked with Nate (New Age Auto) quite a bit. Havent had any issues with him or his products. BUT a member of the forums did have an issue with him or some shit.

[odmanjd]

Originally Posted by Gitcherex Ive worked with Nate (New Age Auto) quite a bit. Havent had any issues with him or his products. BUT a member of the forums did have an issue with him or some shit.

Good to know thanks.

Sent from my SM-G920P using Tapatalk

[SpeedRebirth]

Haha this is not the place to ask about newage. They hate him but they also most probably have not dealt with him at all. It's just their opinion.
Thousands of people have good experience buying from newage. That's fact, not opinion.

I bought my SBC clutch from him, shipping and service was super quick. Ordered late Friday and it arrived Monday (note that I'm in Europe).

And the TT/Newage mount is also superior to the one sure has. I sadly have the sure mount but I would upgrade to TT any day of the week if the sure mount failed

[odmanjd]

Originally Posted by SpeedRebirth Haha this is not the place to ask about newage. They hate him but they also most probably have not dealt with him at all. It's just their opinion. Thousands of people have good experience buying from newage. That's fact, not opinion. I bought my SBC clutch from him, shipping and service was super quick. Ordered late Friday and it arrived Monday (note that I'm in Europe). And the TT/Newage mount is also superior to the one sure has. I sadly have the sure mount but I would upgrade to TT any day of the week if the sure mount failed

I didn't necessarily ask for opinion. I asked if anyone had dealt with him because I hadn't seen his business on the list of legitimate parts dealers. As for sure I'm well aware of the parts being faulty and all that. I'm saying street Unit sells the tt mounts as well as new age. New age just happens to be cheaper so I wanted to see if it was an option regardless of good or bad experiences of other members.

Also my apologies if this was not the proper section to update where you can find diff mounts from tt. Forgive my noob ish mistake!

Sent from my SM-G920P using Tapatalk