PERRIN MOTOR MOUNTS FR-S & BRZ Just arrived PICTURES
 

Nope, not mounted for a few more weeks, but here they are.
I would say they are a must have for anyone tracking their 86s
Tune required, not for stockers!


Sorry about the big pics! Shot with my ipad while eating dinner...
The urethane bushing is stamped Energy Suspension

Nice LARGE pics. ;)

Hrm. Not digging the spacers. I was hoping Perrin would make an FA20-specific mount but it looks like a spacer added to the EJ mounts will make 'em work. :iono:

Curious... on the face that mounts against the engine... is there a seat on each of those holes for the spacer to sit into? Or, is it just flush against the face?

Thanks

Hey Gem, these look good but educate me, what do these do for you?

Well, I'm not the engineer who made them Jeff Perrin is, so he's better off answering this but I will try

Inside the Energy suspension bushing is a molded in steel insert, that has the inner workings of -well, the best analogy would be a ball and socket.

See pictures, million words..

-Then, realize the factory design is like a hockey puck sized rubber of softer durometer, rather than urethane, and its not captive internally, its just bonded on both sides to metal plates. These bonds are the failure points. Sure its got a level of captivity to its design as well, but not the same. Its been known to both fail and give to excessive movement under high loads, especially when they get hot, and where I live, it does get pretty hot, then you add the way I drive, more power and catering to my pleasure as a lab rat for FI, it made sense to buy these and benefit their added bonuses. Set it and forget it type of build, buy the stuff that will make you enjoy it the most.

-The Perrin mount is not only captive, but also of stiffer material than stock, and of more robust design overall. Ideal for anyone exceeding the stock vehicle power specs, and I'd say essential for folks adding FI as far as having a mount thats more stout than stock. Safety with greater MTBF and load capacity.

-Like any hardened motor mount, it will help reduce the entire drivetrain movement under acceleration and deceleration, which assists in more efficiently transmiting more power to the ground.

-improved reliability under racing and other extreme conditions that can tear apart OEM mounts, which can make for a bad day at the track.

-Differences-like any car mounts on a Subaru absorb the vibration from the engine and keep the engine in place while it is running, but you can feel more NVH, while havent put this on my BRZ yet, I have HD mounts on other vehicles in my garage, so I'm pretty familiar with the added NVH, and as Perrins blog points out, its mostly at idle, and mostly for folks who arent on a stock tune, so the rpms can be raised 100-150 to get out of that idle where the motor's "resonant operational frequency" is low enough to be felt. Just a little should do the trick. I like how they feel, I can 'read' my motor better.

if youre bone stock you may enjoy it, but I doubt its at all justifiable unless youre like drag racing your stock car, but who does that?

hope that helps

It did help, as in now I know WTF it is when before I did not. :)

So do you think these will be worth while for the Perrin/Vortech kit for solely street driving? I am waiting on shipping for the kit now. Maybe I'm crazy but a bit more NVH could be a good thing after the sound tube is gone.

Edit: and won't I have to lift the engine to get the overpipe on anyway?

yah thats not a bad time to do this
yeah, i think you'd benefit it even on a street car too if youre going FI
I dont think OE is up to the task

Finally, my cabin could use a little vibration.

Nope, not mounted for a few more weeks, but here they are.
I would say they are a must have for anyone tracking their 86s
Tune required, not for stockers!

Im confused why would you need to tune for mounts??

let me know how you like em I have the cusco trans mount brace and I love it best mod so far.

tune raises the rpms a little...smooths it out.
I too have tranny mount, went with whiteline for this one

Thanks for this. One of my favorite mods on past cars as well. (:

Cool that's what I figured gonna have to get me a set later

And that's why I'll wait for an FA20 specific mount from TIC/MAW or the like...if I even want them. I didn't even go aftermarket on the WRX, just Group-N because they added the least NVH.

You probably wanna see what the user experience here is before you determine its not for you, tho I'm curious what other vendors bring to the market.

True...but TIC/MAW always has good shit. Though like I said, I went Group-N because it was still rubber and didn't change NVH except start-up. I needed new mounts anyway and it was a cheap solution that provided the least cons for me.

Regardless of user experience I would always prefer tailor-made rather than adapted parts. While the use of a spacer may not be entirely deleterious to the design/use of the part, it says something to me.

How much do these run? Are they available right this second, because my car is technically in a perfect situation to get these on since it's just in pieces waiting for my damn turbo to arrive in the mail...

I dont have my car now, so you can have these so long as you order a 2nd set for me-did the ups truck bring you the turbo friday?

do they cause unbearable vibrations in the cockpit that will loosen the already loosened car?

No turbo yet...I am a walking frowny face right now. Just PM the cost and whenever you can come over we'll install them should be cake since the headers are off!

Got these on the way for our build as well. Good for the track guys. DD people stick with the stock mounts. ;)

lets talk monday AM...

We are gonna install these on the BRZ at the same time as the turbo, already noticed a lot more engine movement on the dyno after installing stiffer tranny mount.

Without having them on the car it will be hard to say how bad NVH will increase, but you can be sure it will increase.

Sent from my Nexus 7 using Tapatalk HD

maybe perrin can chime in?

Which shift mount are you using?

When you say movement what do you mean?

Cusco. It's just a normal lateral engine movement caused by sudden change in rotational force of the flywheel/drive line but it's exaggerated now since the engine is still soft oem mounts and transmission is stiffer.

This question is directed to Jeff:

With Group-N mounts on a WRX or STI, most notice after a few hundred miles that the mounts "break in" and the vibration at idle is NO where near as bad as it was initially. My question is.....do you think this ENERGY bushing you use, ..will "break in" and mellow out some of the initial vibration?

Myles Williams
RCE
ps: Love my exhaust on the BRZ.

And I hope Jeff answers, but I will add what I can:

I have urethane motor mounts on other cars, and yes, there is some break in over time. Not alot, not like rubber mounts.

But alot more time, not two weeks lor just a few hundred miles ilke rubber. Seems heat is key for the breakin, normal use will do it, in time.

Wait for Group N for DD.

have you ever owned poly mounts?

its not a big deal at all

done commonly and often, using this kind of bushing with interlocking internals

I DD my other urethane mounts, no issue at all, no extra NVH, except at startup, while cranking, its a bit more palpable thru the frame

most cars doing mounts already have a lil extra NVH from exhausts and such, so the fractional incremental amount of extra or added NVH is truly negligible.

perhaps if you were adding these mounts to a bone stock car, with bone stock exh, you may better be able to find those key differences

polyurethane is sex for cars.

Is there a Group N BRZ? No there isn't. There won't be Group N mounts because they needed to produce those for PWRC homologation as far as I understand. There's no homologated BRZ race car in the WRC as Subaru isn't in the WRC...and now we're talking in circles.

Google Isle of man BRZ.

IF there is profit to be had people will make a part to sell.

STi/SPT are making parts for it and it is not a "rally" car.

The BRZ is NOT in ANY homologated series right now. Group-N is related to FIA's WRC. Subaru is NOT in WRC. Subaru will NOT produce so called "Group-N" bits for the BRZ. SPT has NOTHING to do with anything at all. SPT does not make bushings or parts even.

I just ordered a set of these with a rear shifter bushing and some other swag. Can't wait to get this kit in my car.

It does seem to mellow out, but it still has some vibrations. I really don't find it that annoying on this engine compared to the EJ engine with these mounts. I think the engine is much smoother and there are less things that rattle in the BRZ compared to the STI!

I daily drove the STI this way for 2 years and it wasn't that bad. But its all relative to what you like. After driving the BRZ with them for a while, I think that people will find them very appealing in the BRZ because it really makes the drivetrain solid and even more responsive.

Oh and yes, they will feel the same in an FR-S :)

Thank you sir !

Just waiting for Oil cooler and header !

Myles

Those are my next planned mods. Really looking forward to the header....hint hint jeff.

:respekt:

I love Perrin stuff, but OMG the back orders... I guess everyone else loves Perrin products too.

Does this help with the shifter vibrating?