Rear Engine Motor mounts!!

[lightingwhite32008.5]

Just asking, how can u tell if your stock oem mount fails,and also are the CS inserts placed differntly, than the rear engine motor mount...??any insight on this!!

[Gizzmo_jr]

Not sure on the failure part but I can mention about the Corksport inserts.
The stock mount isn't fully filled rubber at all, and the Corksport inserts take up the gap. A full rear mount is new metal and filled rubber (with a different durothane value), making it stiffer then stock.

[cinder88]

Get the inserts - or go with a new mount - you will not look back.... especially if you have a 5 speed manual ------ The OEM mounts are incredibly soft and mushy, most automatics wont notice this........ but as a manual driver you can feel the trans jumping around when engaging 1st gear and sometimes even 2nd........
I bought the inserts------- and my 04 hatch is finally driving like it should.

Check under your car first to see that mazda did not actually change the mount---- you have an 08 right?

[lightingwhite32008.5]

yah i mine i an 08,but i get like vibes when braking and like also when like i'm at 60 i try pushing harder the car makes like a cruching metal noise just curious wut that could be but, mine is an 08, does the inserts and or new mount also help, the car when u braking and also the vibration from the wheels less or more? thanks guys

[Gizzmo_jr]

I feel everything the car is doing with the engine mount.

Edit: That just sounds dirty:chuckle

[nitsuji]

yah i mine i an 08,but i get like vibes when braking and like also when like i'm at 60 i try pushing harder the car makes like a cruching metal noise just curious wut that could be but, mine is an 08, does the inserts and or new mount also help, the car when u braking and also the vibration from the wheels less or more? thanks guys

I have an 08.5 as well but I don't get vibrations when I brake. Is this under hard breaking? And are you driving MT? I've never heard a crunching sound accelerating past 60 before. Might wanna get that checked out bro. =S
BTW my mounts are all stock.

[darkstarmotorsports]

Do not get the inserts, just get a complete set of new aftermarket mounts

[condor888000]

Explain why. Both do the same basic job.

[baymoe]

Maybe cause he doesn't sell the inserts, at least from what I can gather from the site.

[condor888000]

I was trying to be discreet about it but I suspect you're right.:bana

[darkstarmotorsports]

Explain why. Both do the same basic job.

A complete solid mount like the Medieval one we carry will completely tighten up the drivetrain and eliminate wheel hop.


As for inserts, you're still using the stock mount and the inserts vibrate freely within the OEM rubber. As they might eliminate some of the wheel hop, because they take up the free space within the OEM mount. But it's still not solid

[condor888000]

Solid? From what I understand your mounts still have give in them as well. And the very reason the inserts are attractive is because they slot in below a full mount. They're not only cheaper, but from what I've gathered they're more livable on the street.

Not everyone wants their car to vibrate like a SOB at idle.

[darkstarmotorsports]

Solid? From what I understand your mounts still have give in them as well. And the very reason the inserts are attractive is because they slot in below a full mount. They're not only cheaper, but from what I've gathered they're more livable on the street.

Not everyone wants their car to vibrate like a SOB at idle.

The Medieval mounts only "give" to absorb the vibrations. If you believe that the inserts will produce less vibrations at idle than the Medieval mount, i suggest you do a search on the reviews of the medieval Mount before you make your purchase.

And as for the price, the Medieval rear mount is only $69 USD shipped to you.

[5_Alive]

Just go with a mount. The factory mounts are weak as it is, adding the inserts will help, but if your factory mount is hanging on by a thread, it will break whether you have inserts or not.

Also, I'm also going to be purchasing the Medieval mount as well, well worth it from the reviews that have been being shared across the M3/MS3 community.

[wikdslo]

And as for the price, the Medieval rear mount is only $69 USD shipped to you.

Wow, I thought it was actually more than that! Very decent price.

I know there is the group buy going on for the Passenger/Tranny moutn as well.

[darkstarmotorsports]

Wow, I thought it was actually more than that! Very decent price.

I know there is the group buy going on for the Passenger/Tranny moutn as well.

http://www.torontomazda3.ca/forum/showthread.php?t=32097

[cinder88]

I have been using the inserts and could not be happier - $50CAD and I had them in a week....:)

For street only cars, the inserts should suffice.

Before the inserts - when the clutch was engaged around 1,000rpm the trans would shimmy and shake all through the car - the inserts eliminated this - which was my goal.

I see no benefit to getting a whole new mount, unless you auto cross.

Someone who only offers <sells> one kind of product is coming off a little bias, if you ask me.

For 90% of the people on this forum, the inserts would suffice.
The original problem is the OEM mounts are too soft, not failing at an alarming rate.

[5_Alive]

Again, if your factory mount is nearly broken, adding the inserts will not help cure the actual problem, it will only mask it, as sooner rather than later, the stock mount will break.
For an extra few dollars, you have piece of mind.

(Just ONE scenario of what MAY happen)...
Think of it this way; you have inserts installed, and your factory mount breaks. You have the car towed to a Mazda dealer to have it fixed under warranty. They see that the factory mount has been tampered with, and they make you pay for a new mount because they blame the mount breaking on the inserts.

With the aftermarket mounts, your at least able to check it from time to time to make sure it isn't going to let go.

If the factory mount is hanging on for dear life with the inserts in place, it could be one missed or bad shift and its all over for it.

At least you have some give with the aftermarket.
Maybe try getting a new mount and then compare? I don't know the difference, that's why I'm going to buy the mount straight and skip buying the inserts.

[baymoe]

At least you have some give with the aftermarket.
Maybe try getting a new mount and then compare? I don't know the difference, that's why I'm going to buy the mount straight and skip buying the inserts.

Tell us how it goes with the mount.

I had the CPE Mount with the upgraded rubber and it vibrated my dash to sh!ts. Couldn't stand the vibrations and sold it to a Speed3 member.

[cinder88]

If the factory mount is hanging on for dear life with the inserts in place, it could be one
missed or bad shift and its all over for it.

Please explain this - the factory mount is very simple - 2 large bolts - how could any mechanic know if this part is going to fail.

I dont see how any stock mazda3 could crack the OEM lower engine mount off - if you are Auto crossing or treating your car like a POS - nothing is going to prevent damage.

The OEM mount is perfectly safe and the inserts are a fine everyday solution to the OEM gaps.
A whole new mount is entirely unnecessary.

[wikdslo]

Please explain this - the factory mount is very simple - 2 large bolts - how could any mechanic know if this part is going to fail.

I dont see how any stock mazda3 could crack the OEM lower engine mount off - if you are Auto crossing or treating your car like a POS - nothing is going to prevent damage.

The nature of a motor mount is to connect 2 large items with a rubber insert to absorb the shock (in this case, .. trans/motor to the chassis).
The rubber is the part that connects the 2 (using bolts, metal frame). When that rubber wears, dries, etc, it can crack, tear, fall apart.

Visually inspecting a mount for signs of dryness, cracks, tears, etc can allow any mechanic to know if it's overall healthy looking or not. Obviously, a perfectly healthy mount CAN still crack or break down very quickly, but if you see it's worn out and about ready to go, you'll know to replace it BEFORE that happens!

[cinder88]

Rubber mounts under normal conditions will last 10+ years.........
Even on 2004 Mazda3's the odds of finding cracked rubber mounts- is ridiculous.

The only failing mount on the non-mazdaspeeds is the #3 or passenger side mount<liquid filled>.

The lower mount- is so simple this thing should last a decade or two-
The performance is lack luster but it should last.

Now if you are autocrossing or abusing the vehicle - yes even bolts will crack.
But c'mon the car was not designed for this.

I called all 6 of the mazda dealers in my area and not one mazda3 has come in for a failed lower engine mount.

My original point was not to justify getting a new mount because the one on your car could be ready to fail. The car is only 6 years old.

[Fobio]

apples and oranges...

MS3's needs mounts to complete the handling pkg, as the MS3's power and front traction (or lack thereof due to shitty OEM mounts) easily induces wheel hop...I've swapped out my mounts (SU rear, Medieval tranny mount) and wheel hop is 80 - 90% gone...also, more solid tranny mount have lessened some of the twisting of the tranny and allowed for smoother 1st gear engagement and 1 -2 shifts. this is also in light of the fact that I have heard of multiple MS3's with failed mounts and dropped engines.

I don't have a MZ3 so I can't say, but the wheel hop issue, and tranny engagement are NOT issues being experienced by MZ3's. Furthermore, I haven't personally noticed any MZ3 with failed mounts like the MS3...

When I bought my SU rear mount, it was from a member who had it in his MZ3. He couldn't stand the vibes either, even after 5000km. It's not the mount's fault. I don't think the regular MZ3 has enough drvietrain hardware to properly load the engine mounts that are designed for the MS3...less weight in the MZ3 prolly calls for less stiff mounts. Obviously, I do not experience the same level of noise/vibes he described to me when I bought it from him.

Having said that, if you drive your car aggressively, you WILL benefit from improved mounts because they will improve chassis response, but at the expense of increase NVH (noise, vibration, harshness)...despite the increased NVH, I can not imagine driving my MS3 without the mounts I have...it'd be like rowing a boat with a hole in the oar for me...

[5_Alive]

If the factory mount is hanging on for dear life with the inserts in place, it could be one
missed or bad shift and its all over for it.

Please explain this - the factory mount is very simple - 2 large bolts - how could any mechanic know if this part is going to fail.

I dont see how any stock mazda3 could crack the OEM lower engine mount off - if you are Auto crossing or treating your car like a POS - nothing is going to prevent damage.

The OEM mount is perfectly safe and the inserts are a fine everyday solution to the OEM gaps.
A whole new mount is entirely unnecessary.


Sorry, didn't realize you guys were talking about the normal M3.
The drivetrain has way too much lash and give for the power of the MS3, and I cannot stand having the feeling of shifting in a spirited manner, only to feel the clunk and rock of my drivetrain.

Once I get my new mount in (already ordered through Darkstar), I'll let you guys know how it is.
I drive a lot, so within' the week, it should be broken in once I receive and install it.

[5_Alive]

Um, so yea. Put it in today, and not a whole lot of vibrations like everyone says there is. I noticed a LITTLE bit more, but nothing "oh my god I can't handle this"..
the car feels solid, I can tell its helped me improve with my shifting, and the steering a bit heavier, no clue why? but yea, its good, buy it..

[darkstarmotorsports]

Thats good to hear!