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-   -   MMR diff mount install (https://www.miataturbo.net/suspension-brakes-drivetrain-49/mmr-diff-mount-install-46686/)

falcon 04-25-2010 08:53 PM

MMR diff mount install
 
When installing the new mounts, do they get tapped in from the top of the diff or the bottom? Basically the disk area that stays visible like in the photo... does it go betweent he diff and the floor of the car or the diff and the clamp on the bottom.

Can't quite figure it from this picture.

http://www.mmr-direct.com/Tech/Differential/diff4.JPG

Savington 04-25-2010 10:46 PM

Top. The little donut bit that's separate goes on the bottom.

falcon 04-25-2010 11:14 PM

thanks.

Nagase 04-26-2010 05:01 PM

Have a set of those mounts, about to install them, have no doughnut bit. Is that supposed to come with the mounts or is it on the car already?

falcon 04-26-2010 07:52 PM

You re-use the one that's on the car.

It's not like the Tein ones that come with a new poly one.

BTW... have fun getting the old bushing out. ;) I like having a 5 ton press at work.

Nagase 04-26-2010 09:28 PM


Originally Posted by falcon (Post 563120)
You re-use the one that's on the car.

It's not like the Tein ones that come with a new poly one.

BTW... have fun getting the old bushing out. ;) I like having a 5 ton press at work.

And i like having a 12 ton press at home. ^_-

Thank you!

Savington 04-26-2010 10:06 PM


Originally Posted by Nagase (Post 562999)
Have a set of those mounts, about to install them, have no doughnut bit. Is that supposed to come with the mounts or is it on the car already?

Half and half. There's the little bottom piece that you scrape the rubber off of, and then there's a polyurethane donut that goes in between the bottom of the diff and those lower mounts.

Nagase 04-26-2010 10:14 PM

Well damn, if there's a part i'm missing (just got the two "top hat" looking things), i guess i'll need to contact mmr.

tann3r 04-26-2010 10:34 PM

I think Savington is thinking about the energy suspension set that comes with the lower part. IIRC the MMR one only comes with the "top hat" looking thing, and you reuse the stock lower.

94miatared 04-29-2010 01:55 PM

949racing bushings come with top and bottom parts, MMR bushings only come with top part and you reuse old bottom mount.

Savington 04-30-2010 04:59 PM

oops, yeah. I saw diff mount and thought ES.

mrtbon 06-07-2010 01:18 PM

I'm trying to install me MMR diff mounts and have ran into some questions. Is there a metal sleeve that goes between the bolt and bushing itself? When installing mine I noticed a lot of wiggle room and my bushing retainer plate doesn't fit correctly. After reading, I thought I had the bushing assembly understood, but the instal is proving me wrong. Assembly goes: read subframe>MMR Bushing (bigger diameter on top when installed on the car)>read end>retaining plate>nut?

falcon 06-07-2010 01:22 PM

Yes.

That's how I ended up doing mine. You re-use the stock round plate on the bottom.

mrtbon 06-07-2010 01:49 PM

Was there wiggle room between the bushing and the bolt? There's about an 1/16" clearance between the concentric bolt and ID of bushing.

mrtbon 06-08-2010 08:55 AM

That stock round plate that you are mentioning is the one with the tab with two bolt holes?

RyanLewo 06-08-2010 10:51 AM

ES kit re-uses the bottom metal plate as well (after you burn all of the old rubber off).

chpmnsws6 06-08-2010 12:57 PM

Does anyone sell lower donuts, or do I need to make them? My MMR's make the lower bracket sit to high up, so they can't attach to the tab with the two bolt holes. Needs lowered a 1/4 inch or more.

mrtbon 06-08-2010 01:21 PM

Thats the same problem I have. Again though, is there supposed to be a metal sleeve that goes between the bushing and the main bolt?

chpmnsws6 06-08-2010 02:40 PM

Can someone measure either the top of the MMR bushing, or the ES donut? I'm going to make a few spacers if someone wants to help offset the cost.....

mrtbon 06-08-2010 03:55 PM

I'll probably be interested. What are you going to machine it out of?


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