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Old 03-05-2014, 05:59 PM   #1
mxrath98
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Default 2011 STI motor mounts worth it? And pulleys as well

Hey guys I've been trying to think of some little things I could do to not necessarily increase hp but maybe to wake it up and get more to the wheels with what I do have, without spending too much money.
Have a 2011 sti hatch 3" catted TBE with Perrin cold air intake and stage 2 tune from Perrin on my access port.
I'm curious what your guys thoughts are on doing motor mounts. Do you notice much of a difference in torque/response/boosting faster ect. I was looking at really any of the pitch stop mounts leaning towards agency power, Perrin, or torque solutions but open to anything I would like to see what you guys are running and your thoughts.
Also then looking at the Perrin or torque solutions motor mounts. What's your thoughts about performance gains? Worth the money? And instillation. Pretty mechanically inclined and I have access to a lift. Not trying to pull the motor though so if that's necessary for the bottom motor mounts I won't do it but any information is appreciated. Still in the early stages of thought for being a future mod.
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Old 03-05-2014, 06:03 PM   #2
mxrath98
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Oh and also forgot to as if a new crank pulley is worth it it makes sense to me to have less mass for less to turn but any thought on anyone who has done it or thinking about it it's not an expensive mod seems like one of those little things that might actually help in a few areas.
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Old 03-05-2014, 06:42 PM   #3
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simple answer is no.
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Old 03-05-2014, 07:17 PM   #4
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Worth it is a completely crap question. Have you read Unabombers Manifesto? I think you haven't.
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Old 03-05-2014, 07:25 PM   #5
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No u don't need motor mounts but I would suggest for what u r looking for is a set of whiteline rear diff inserts plus cradle bushing and also the positive shift kit.

Maybe consider the group N trans mount.
With this combination your shifts under wot or moderate load will feel much better especially going from 1st to 2nd gear.
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Old 03-05-2014, 07:25 PM   #6
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**** like mounts and bushings always sound so alluring and sexy when you read manufacturer's advertising copy and people's reviews online. Then you put them on your car and you realize that they left out what's called "NVH" because they don't care or were too embarrassed by their choice to mention it.

NVH is "noise, vibration and harshness." If you put racy mounts and bushings in your car expect your car to reward you with race-car levels of noise, vibration and harshness. Some people don't care because they've already got the catless downpipe and muffler-deletes going but others, looking for simple "upgrades", are often disappointed at how user-unfriendly the car has become as a daily driver.

Caveat emptor.
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Old 03-05-2014, 07:30 PM   #7
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Quote:
Originally Posted by Blackfin View Post
**** like mounts and bushings always sound so alluring and sexy when you read manufacturer's advertising copy and people's reviews online. Then you put them on your car and you realize that they left out what's called "NVH" because they don't care or were too embarrassed by their choice to mention it.

NVH is "noise, vibration and harshness." If you put racy mounts and bushings in your car expect your car to reward you with race-car levels of noise, vibration and harshness. Some people don't care because they've already got the catless downpipe and muffler-deletes going but others, looking for simple "upgrades", are often disappointed at how user-unfriendly the car has become as a daily driver.

Caveat emptor.
This is true.
I can personally tell you just how harsh a car can become. Nearly every single mount in my car is now a solid mount and my car is LOUD, uncomfortable, unforgiving, and the interior has completely rattled apart.

I actually drove around with no interior for a while just because the rattles were driving me pretty nuts.
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Old 03-05-2014, 07:34 PM   #8
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Quote:
Originally Posted by Kuros View Post

This is true.
I can personally tell you just how harsh a car can become. Nearly every single mount in my car is now a solid mount and my car is LOUD, uncomfortable, unforgiving, and the interior has completely rattled apart.

I actually drove around with no interior for a while just because the rattles were driving me pretty nuts.
Sheesh!! Do u have to wear a mouth guard and a kidney belt also haha!!

Any of the bushings I mentioned below will not add any nvh besides the positive shift kit in which is very subtle but everybody is different.
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Old 03-05-2014, 07:42 PM   #9
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Save your money. Motor mounts are not needed at your hp level. And unless you want to drop $400+ on a Fluidampr or ATI pulley, do not put some crappy aluminum crank pulley on your car. They are nothing but bling/snake oil.

Save your money for a more efficient turbocharger, a FMIC, Injectors and a tune.
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Old 03-05-2014, 08:18 PM   #10
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my 07 XT makes about 350 whp. With stock engine mounts making the 2-3 shift at full throttle was sometimes difficult. Going with the Group N motor mounts seems to have improved substantially, without excessive NVH. I've heard the Group N tranny mounts really firm things up, but with a greater increase in NVH, so I have not done that one. I like it the way it is. I already had a short shifter and shifter bushings, which contribute a bit of noise as well.
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Old 03-05-2014, 08:43 PM   #11
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Quote:
Originally Posted by Kuros View Post
This is true.
I can personally tell you just how harsh a car can become. Nearly every single mount in my car is now a solid mount and my car is LOUD, uncomfortable, unforgiving, and the interior has completely rattled apart.

I actually drove around with no interior for a while just because the rattles were driving me pretty nuts.
This site desperately needs a "Like" button.
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Old 03-05-2014, 11:06 PM   #12
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When I had my 07 STI I did group n motor mounts, transmission mount, kartboy cross member bushings and TIC rear differential bushings. Definitely had an increase in engine noise,mainly around 3k-redline. Also the subie wiggle was more pronounced(engine vibration at idle) I didn't really notice an increase in noise with the transmission mount/bushings or the rear differential bushings, but once in a while I could hear some driveline whine. Now that I have a 14 STI,all I will do is probably the transmission mount, rear differential bushings and shifter bushings. Like stated before, my interior rattled like a mofo all the time and it got kind of annoying. So just as a heads up,I probably wouldn't upgrade the motor mounts unless NVH doesn't bother you
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Old 03-05-2014, 11:12 PM   #13
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Quote:
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This site desperately needs a "Like" button.
The best is being "a nice, selfless guy" and giving all the chesty girls rides in my car....




Bouncy bouncy bouncy
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Old 03-05-2014, 11:40 PM   #14
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Cool guys thanks I'll definitely look in to the rear diff inserts and the cradle bushings as trev762 stated. As I said it was more of a curiosity if those mounts and pulleys actually did anything I was skeptical to begin with. Good to know that they aren't going to do much for me, and mostly just sounds not practical to do.
Good info thanks!
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Old 03-06-2014, 01:42 AM   #15
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I went stage 2 a few months after buying the car. About 50k later, the shop started showing me a few worn bushings and some fairly ugly looking stock motor mounts. I upgraded to group N motor mounts.

In hind sight, I wish I would have done it much earlier. NVH was negligible and the difference felt during launch or acceleration was significant. I also do a good amount of engine braking. My first tbe setup was turboxs. I snapped 3 different downpipe s-braces before I swapped to a different welded brace downpipe. Can't help but wonder if the upgraded mounts would have cleaned up that stock drive train slop and prevented it.

Thumbs up for me on group n. I did pulleys as well, wasn't really noticeable.
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Old 03-06-2014, 09:58 AM   #16
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I would recommend doing group n mounts for everything possible. They firm things up without really adding any NVH to your ride. What I noticed added the most NVH in terms of bushings I've done is the kart boy bushings with the short shifter. Tranny whine can be heard in first and second but I don't really notice it anymore.
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Old 03-06-2014, 01:35 PM   #17
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Quote:
Originally Posted by El Wray View Post
I went stage 2 a few months after buying the car. About 50k later, the shop started showing me a few worn bushings and some fairly ugly looking stock motor mounts. I upgraded to group N motor mounts. In hind sight, I wish I would have done it much earlier. NVH was negligible and the difference felt during launch or acceleration was significant. I also do a good amount of engine braking. My first tbe setup was turboxs. I snapped 3 different downpipe s-braces before I swapped to a different welded brace downpipe. Can't help but wonder if the upgraded mounts would have cleaned up that stock drive train slop and prevented it. Thumbs up for me on group n. I did pulleys as well, wasn't really noticeable.
thanks, good to hear from someone who has done it. I do lots of engine breaking as well I try to use my breaks as little as possible.
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Old 03-06-2014, 01:39 PM   #18
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Quote:
Originally Posted by Razgeiz View Post
I would recommend doing group n mounts for everything possible. They firm things up without really adding any NVH to your ride. What I noticed added the most NVH in terms of bushings I've done is the kart boy bushings with the short shifter. Tranny whine can be heard in first and second but I don't really notice it anymore.
My main concern with the mounts was NVH so these. But you're the second one in a row that says group n mounts are not bad so I'll look more in to those then. Only mount I don't want to do is tranny mount that I hear causes probably the most vibration and noise. And seeing as it is my daily I don't want that, maybe when and if and when I turn it in to a track car
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Old 03-06-2014, 02:18 PM   #19
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Quote:
Originally Posted by mxrath98 View Post

My main concern with the mounts was NVH so these. But you're the second one in a row that says group n mounts are not bad so I'll look more in to those then. Only mount I don't want to do is tranny mount that I hear causes probably the most vibration and noise. And seeing as it is my daily I don't want that, maybe when and if and when I turn it in to a track car
I have both group N tranny and motor mounts and the nvh is almost non existing or subtle. U will want the group N tranny mount as this will get rid of alot of sloppiness out of your drive train more than what the motor mounts will as this point.

Your shifts will feel much more clean especially 1-3.

Keep in mind the motor mounts r a b$tch with out proper tools.
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Old 03-06-2014, 05:31 PM   #20
mxrath98
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Originally Posted by trev762 View Post
I have both group N tranny and motor mounts and the nvh is almost non existing or subtle. U will want the group N tranny mount as this will get rid of alot of sloppiness out of your drive train more than what the motor mounts will as this point. Your shifts will feel much more clean especially 1-3. Keep in mind the motor mounts r a b$tch with out proper tools.
Oh ok I see that makes lots of sense. Definitely have to say under wot second is a bitch half the time it grinds even with flat foot shift or even just shifting quick normally with my foot off the gas. So the tranny mount helps with that for sure you're saying? And doing both motor and tranny mounts together would be the best way to go so they work together. Not just doing one or the other.
How about if you're cruising on the highway lets say around 3200-3500 rpms the NVH isn't bad? Still practically unnoticeable?
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Old 03-06-2014, 06:06 PM   #21
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Quote:
Originally Posted by mxrath98 View Post

Oh ok I see that makes lots of sense. Definitely have to say under wot second is a bitch half the time it grinds even with flat foot shift or even just shifting quick normally with my foot off the gas. So the tranny mount helps with that for sure you're saying? And doing both motor and tranny mounts together would be the best way to go so they work together. Not just doing one or the other.
How about if you're cruising on the highway lets say around 3200-3500 rpms the NVH isn't bad? Still practically unnoticeable?
U don't necessarily need the motor mounts at this point but if u decide to go this route u might as well get the group N pitch stop mount also and the nvh is nothing compared with what u will get with a the shifter bushing kit or the positive shift kit put it this way.

Yes 1-2 shifts were a b$tch only cuz u can't speed shift these cars and had to adjust coming from a honda so keep this in mind.
Any of the other bushings I mentioned from whiteline only go with the bushing "inserts" not the full bushings.
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Old 03-07-2014, 11:54 PM   #22
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Guess it's a good thing I never owned a honda.. Had a mustang gt actually so I still **** on Hondas lol
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Old 03-09-2014, 07:36 PM   #23
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O can't talk for the group n trans Mount as that will most likely be the next thing I do! But I have an 08' wrx, I put group n engine mounts in while engine was out (figured why not!). As well as kartboy front and rear shifter bushings. The engine mount added maybe some vibration at idle but not bad, deff worth it for the throttle response and 2nd gear is much easier to get into under wot. Shifter bushings add trans wine but not really worth noting. Defiantly worth it and I drive hundreds of miles a week so use it a lot! Go group n don't think u will regret it.
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Old 03-09-2014, 07:56 PM   #24
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I have group n tranny & motor mounts being installed within the next few days.

I currently have kartboy ss & bushings, & a perrin pitch stop. I wrote a short review in my personal build thread if anyone is interested.

Like many it's my daily driver so keeping NVH down while cleaning up slop was the goal. From what I read the Group n mounts are the answer.I'll report my findings.
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Old 03-09-2014, 08:01 PM   #25
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Quote:
Originally Posted by NBRX View Post
I have group n tranny & motor mounts being installed within the next few days.

I currently have kartboy ss & bushings, & a perrin pitch stop. I wrote a short review in my personal build thread if anyone is interested.

Like many it's my daily driver so keeping NVH down while cleaning up slop was the goal. From what I read the Group n mounts are the answer.I'll report my findings.
If anything the I would guess the Perrin pitch stop and the kart boy shifter bushings will give the most nvh.
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