What motor mount should I get?

[Nataphen]

OK, bottom line, if this was just my car, I would go ahead and buy one of the really stiff mounts like the TRZ dogbone or the CP-E. Since this is my wife's car that we share, she isn't going to want to deal with the vibrations that those mounts cause. I'm thinking that the CorkSport mounts would be the best compromise, definitely the cheapest fix. I just want to know if you guys have any experience with them and whether or not they work.

CORKSPORT Motor Mount Insert 2010+ Mazdaspeed 3

[Aetherfury]

I am in a similar situation where my wife rides in my car a lot and drives it for fun once in a while but I plan on getting the CP-E 60 duro.

The corksport inserts I have heard (don't know if it's true or not) after a while they need to be replaced so you might as well get a mount.

[RichieRichness]

The CP-E 60 duro was great when I had it. Very high quality, only minor changes in vibration. More expensive but worth every penny.

[Nataphen]

Originally Posted by Aetherfury I am in a similar situation where my wife rides in my car a lot and drives it for fun once in a while but I plan on getting the CP-E 60 duro. The corksport inserts I have heard (don't know if it's true or not) after a while they need to be replaced so you might as well get a mount.

That's what I figured just by looking at the pic, they seem like they would wear out. SU has this MM + shifter bushings package, do the solid shifter bushings fit the 2010?

MAZDA3 Engine Mount and Solid Shifter Spacers

Originally Posted by RichieRichness The CP-E 60 duro was great when I had it. Very high quality, only minor changes in vibration. More expensive but worth every penny.

The 60 may be OK. Street Unit RMM and CP-E RMM both show that they're out of stock, lol, so I guess I won't be getting any of them right just now.

[Nazarite]

Hey man, honestly, I've got trz mounts, vibrations are definitely noticeable for the first couple weeks, but go away (or else you just get used to them - don't really know which) by 1,000 miles.

[RichieRichness]

If you hold the CP-E mount in one hand (and any other brand in the other), it's a no brainer...the quality and size of CP-E's mounts are amazing.

[Aetherfury]

Originally Posted by Nataphen That's what I figured just by looking at the pic, they seem like they would wear out. SU has this MM + shifter bushings package, do the solid shifter bushings fit the 2010? MAZDA3 Engine Mount and Solid Shifter Spacers

I'm pretty sure the bushings will fit since they look exactly like my JBarone bushings for my 2010. I think it's pretty universal, but call StreetUnit today and ask them about that and the mount. They have great customer service and that is a good deal.

If you end up going CP-E for the mount and wait for it to be in stock, JBarone shifter bushings fit for sure on the 2nd gen: JBarone 2nd Gen Shifter Bushings

[Nataphen]

Originally Posted by Nazarite Hey man, honestly, I've got trz mounts, vibrations are definitely noticeable for the first couple weeks, but go away (or else you just get used to them - don't really know which) by 1,000 miles.

I've been trying to read as much as possible on the TRZ, and most people are saying that it gets better, but doesn't go away. I also read that you can put epoxy around the bushing on the TRZ, and it will almost completely stop vibrations. Any word on this? Sorry that I'm jumping all over the place in my questioning, I'm researching this as I'm posting.

[Nataphen]

From reading reviews and write ups, I've decided that I'll go with the CP-E rmm and JB shifter bushings. The main reason is that the more that I looked at them, the CP-E is completely redesigned, where as the SU version is based on the stock one, which is obviously flawed to begin with. I can't find any concrete info on the vibration issue being resolved on the TRZ, so CP-E just seems like the best option. When I do the exhaust later, I'll do the SU side motor mounts at the same time. That way I can tell my wife that the vibration is from the exhaust, because she wants exhaust.

I don't want power wiggling around in my engine bay when is supposed to be going down to the road.

[FridayGt]

Honestly, if vibrations are that much of a concern, I'd reccomend you at least try the Corksport inserts. Predapio has a set, unused, for $25 shipped. If it doesn't hold up after a long while, then at least it was only $25. Besides, even if it does wear out, isn't half of the fun getting to work on your car? From what I understand, there is no increased vibes from them at all, and it's a VERY cheap way to play it safe and see for yourself. What is a lot for one person may be nothing for another person. Good luck either way.

*EDIT: I was too slow on the post. My bad.

[Nataphen]

Thanks for the input, guys. I love forums!

[RichieRichness]

No sir, you love www.mazdaspeedforum.org/forum!

[Nataphen]

lol, true.

[DreamReaver]

Can't really have stiffness without sacrifice. Anyone will tell you that. If you want a softer ride, rubber is the best way; if you want performance/stiffness in your ride, you will need poly/delrin, which transfers vibrations more. I went with TRZ's RMM, poly for street, so I'll see soon enough whether or not it's going to drive me nuts. If so, I'll sell it and get the CP-E one. But either way, anything poly/delrin is going to transmit more vibration for the performance gain.

Congrats on your purchase, though, and let us know your impressions when you install.

[dachtler]

I have to say I have the CS RMM inserts on order, and will hopefully see them next week. I'm going to give them a shot, and see how they work. If they do happen to wear out after a while, then I'll go with one of the more robust mount solutions.

BTW, I just realized after reading another thread that I've experienced the engine banging issue with the stock mount. I was accelerating up a hill and shifted from 1st to 2nd. When I let out the clutch and hit the gas in 2nd, I heard this loud "BANG" come from the front of the car. I thought I had blown a tire, broken a tie-rod end, or hit a big rock. Pulled over to the side of the road and looked under the car, but couldn't see anything. Scared the living sh*t out of me! I certainly don't want that to happen again!

[Ms3speed]

Originally Posted by dachtler I have to say I have the CS RMM inserts on order, and will hopefully see them next week. I'm going to give them a shot, and see how they work. If they do happen to wear out after a while, then I'll go with one of the more robust mount solutions. BTW, I just realized after reading another thread that I've experienced the engine banging issue with the stock mount. I was accelerating up a hill and shifted from 1st to 2nd. When I let out the clutch and hit the gas in 2nd, I heard this loud "BANG" come from the front of the car. I thought I had blown a tire, broken a tie-rod end, or hit a big rock. Pulled over to the side of the road and looked under the car, but couldn't see anything. Scared the living sh*t out of me! I certainly don't want that to happen again!

I know what you mean when I was on bone stock mounts my engin used to slap back so hard going from 1st to 2nd at wot and then I tryed a street unit rear mount with the street bushing wich is a 62d thinking oh I don't want the vibes and wanted to pussy foot it but guess what it still did it! All I can say is this motor needs help and if you plan on doing anything at all to increase hp or just like driveing hard motor mounts should be your first mod. I made the mistake of going to the track with stock mounts and I had just added my catback, intake and bov. Big mistake I had to run with traction control on the whole night because my first run I had it off and got wheel hop so bad Im lucky i didn't break anything and It through my alingment off abit I ran like a 14.7 on that run coasting through the finish line cause I was so pissed I let off and the rest of the night all I ran was 15s needless to say I hated my car after that and am still embarased to go back.

So unless you dont drive the car hard at all man up and get some good stiff motor mounts, I now have the Trz dog bone rear, trz tranz mount both are poly and also stock passanger mount with a weapon r torq damper the vibes are pretty healthy but you would be amazed at what all that torq can do on the road.

[dachtler]

Originally Posted by Ms3speed So unless you dont drive the car hard at all man up and get some good stiff motor mounts...

All right, all right. Since my manhood is being called into question, I'll man up and get a decent RMM... :-)

BTW, does anyone know if the CP-E mount duro ratings are on the ASTM D2240 type A or type D scales? I would think type A, which would put the 75 duro mount at the same stiffness as a soft skateboard wheel. If it were on the D scale, it would have the same stiffness as a hardhat, which would not give any dampening at all.

[Ms3speed]

The Cpe mount comes in eather a 60duro or 75duro My old street unit mount was 62duro and it made a nice change and barely any vibes at all only when I first put it in could you realy tell and only at idle or when clutching from a stop, I could spin the tires in second gear from a roll with the street unit mount but like I said befor it wasn't enough for me. sence I have the trz rear mount in 70duro I think you may not like the 75duro cpe mount it will deff vibe pretty good but the 60 will make a good improvement over stock and still ride nice.

[Nataphen]

I ordered the 75d anyway, lol. Guess I finally grew a pair.

[FridayGt]

Dude, I just put in the 75 Duro, and I don't think you really need to worry about vibes. They were really strong and noticeable when I first put them in, but now that it's broken in a bit I get next to nothing. The only time I can really tell is when I'm idling with the A/C on and they haven't been in for 1,000 miles yet. You'll be really happy with the 75 duro, just make sure you do a really good job putting them in and get those bolts back in TIGHT!

[DreamReaver]

Got my TRZ RMM the other day and will be installing it early next week. Can't wait to feel the power hit the road instead of rocking my car between 1st and 2nd and 2nd and 3rd!

[dachtler]

So, since I already had the CS inserts, I went ahead and installed them today while I had the MS3 on my buddy's lift to change the oil. Installation was a snap, though it's a pretty snug fit for the upper left bolt into the tranny. Initial impression driving home is that vibration increase is minimal to imperceptible. Shifting felt nice and solid.

I figure I'll try these for a while, and if thing start to get sloppy again, then go for the CP-E mount.

[Ms3speed]

Originally Posted by dachtler So, since I already had the CS inserts, I went ahead and installed them today while I had the MS3 on my buddy's lift to change the oil. Installation was a snap, though it's a pretty snug fit for the upper left bolt into the tranny. Initial impression driving home is that vibration increase is minimal to imperceptible. Shifting felt nice and solid. I figure I'll try these for a while, and if thing start to get sloppy again, then go for the CP-E mount.

The cs inserts are cheap and thats the only thing good about them, performance gains are allmost nothing but they might last longer than stock, if you wan't pure performance get the Trz dogbone in delrin, if you want performance that won't rattle your teeth out get it in poly but the best rear motor mount for performance hands down is the trz dogbone. The reason why the vibes are higher than other mounts with the same duro rateing is because of the size of the bushing.

[ms3077]

The CP-E Rear Engine Motor Mount is built like a BRICK SHIT HOUSE. It's a no brainier.

Stay away from anything Nator Performance.

[phillyb]

you should get all of the rear motor mounts in the world. and tell us which one you like the best.
cause we care about your one opinion...no matter how subjective it is

[Ms3speed]

cpe is a good mount and the new Su mount is like an exact copey but I think I heard about some fitment issues with that one. I had the old Su mount it was good but the street bushing was to soft, I should of grabbed the 90 instead but I wen't with the trz dogbone and tranz mount package from Pg for $180 seemed like enough reason for me to go with trz over the other brands.

[Qtip]

Originally Posted by Ms3speed cpe is a good mount and the new Su mount is like an exact copey but I think I heard about some fitment issues with that one. I had the old Su mount it was good but the street bushing was to soft, I should of grabbed the 90 instead but I wen't with the trz dogbone and tranz mount package from Pg for $180 seemed like enough reason for me to go with trz over the other brands.

My SU one-piece mount fit just fine... I'd go with either the SU Soft bushing or the CP-e 60 durometer based on what the OP is looking for.

[Nataphen]

I changed my mind and got the CP-E 75. I'm very happy with it, I wish it was even more stiff than it is actually. I'm going to pick up the SU side MMs, and hopefully, it will be where I want it at that point.

[Kdawg207]

i have the awr mount and absulutely love it
nice and firm but not too much

if you dont car about any sort of vibes - i think the trz overall is the best mount out there - wish i got it

[Ms3speed]

Originally Posted by Kdawg207 i have the awr mount and absulutely love it nice and firm but not too much if you dont car about any sort of vibes - i think the trz overall is the best mount out there - wish i got it

TNANK YOU! like I said I too bought my first mount thinking I wan'ted something more conservative when I got the Su mount and after installing I knew right away I should have got the trz. The other mounts out there are good but nothing will give the performance and realy put down what your paying for like the trz.

Originally Posted by Nataphen I changed my mind and got the CP-E 75. I'm very happy with it, I wish it was even more stiff than it is actually. I'm going to pick up the SU side MMs, and hopefully, it will be where I want it at that point.

Don't get the Su side mounts I had them and after seeing the welds on the tranz mount I returned them right away. A few people have also had that mount break and drop there engin on the road so....... The stock tranz mount is worse than the passanger side mount and changeing out the tranz mount will also make a big improvement over stock you will deff get some vibes though but look at the TRZ trans mount from Protegegarage.com if you havn't allready.

[AZRushki]

Let me be the first to tell you, the vibes go away after 100-200 miles of driving, they are quite seriously non existent. I have the CPE 60, i wish i got the 75. Get the 60, tell the wife to give it time and make sure she knows how beneficial it is for the car.

You will NOT regret it, get the 60 if you're too worried, but seriously... my car = no vibes.. and i miss the vibes tbh.

[PapaSmurf]

Is there anywhere else to get the CP-E RMM? I see its on backorder on their website, unless thats wrong...?

[Ms3speed]

Google shopp it?

[Airick]

CP-E is the way to go. I went with the 60 duro as I often have my wife and kids in my car. Does it job perfect and not much n/v/h over stock imo. Very quality product.

[BROXN]

Well....looks like a coin toss in which one I'll get but leaning towards the 75.

[Nataphen]

Originally Posted by BROXN Well....looks like a coin toss in which one I'll get but leaning towards the 75.

I installed the 75 at a little over 2K miles, and by 3K miles, I don't even notice the vibration anymore. I think it's a combonation of the bushing getting broken in and just getting used to it.

[ptperformance]

PT-Performance.com

PT-Performance.com

Here are a few that we recommend.

[ruthless013]

CPE 60 & 70 back in stock at SU today.

[cesaros]

TRZ dogbone FTW.

[Speed3eak]

Originally Posted by ptperformance PT-Performance.com PT-Performance.com Here are a few that we recommend.

Does the kicker mount fit on to pre-existing mounting points? I like what it's doing but I don't want something that requires any fabrication/drilling.