Prothane MM Insert Vibration Madness !

nerox · Post by **nerox** » Wed Apr 06, 2011 3:43 pm

I Bought a set of the red prothane motor mount inserts and have installed them easily, my oem motor mounts looked in perfect condition and the inserts slid in quite easily with the help of a little grease

I read all the posts about them before especially the increase in vibration but most people on here said that the vibration was minimal.

now when the car is stationary / on idle the steering wheel vibrates like MAD !!! i cant even hold it still it looks like its about to shake itself off. occasionally when i stop at a set of lights etc it will be perfectly still but will soon start shaking again.

if i increase the revs a little then it stops and it dosen't vibrate at all when driving, only when its on idle.

is this normal or have i done something wrong?

i dont really wanna take them out as it seems a waste of money but i cant live with this kind of vibration.

they've been in for like a month now so should have 'bedded in' as much as they will do

LowNSlow · Post by **LowNSlow** » Wed Apr 06, 2011 3:56 pm

Seems a little extreme.. I noticed no difference with my red inserts.

g_force58 · Post by **g_force58** » Wed Apr 06, 2011 4:33 pm

I haven't heard of vibration with the Prothane inserts as extreme as yours. If you took the mounts off to install the inserts, did you recheck the mount alignment? I get the same vibration with my AGP mounts, but that was expected since they are solid mounts. You may want to check the how to section here and verify the mounts are correctly aligned..............just sayin.

nolaneon · Post by **nolaneon** » Wed Apr 06, 2011 4:38 pm

hate to threadjack, but curious, how bad is the vibration with the agp mounts?

Danteneon · Post by **Danteneon** » Wed Apr 06, 2011 4:39 pm

viewtopic.php?t=43837

Read that

nerox · Post by **nerox** » Wed Apr 06, 2011 5:00 pm

g_force58 wrote:I haven't heard of vibration with the Prothane inserts as extreme as yours. If you took the mounts off to install the inserts, did you recheck the mount alignment? I get the same vibration with my AGP mounts, but that was expected since they are solid mounts. You may want to check the how to section here and verify the mounts are correctly aligned..............just sayin.

actually no i didnt check the alignment

i took the whole top one off to put the insert in and then just put it back but the bottom one i only took the bolt off that was necessary to put the insert in. the one which attaches to the crossmember i left alone.

i shall have a play with this at the weekend and hope it cures it

ltr450r · Post by **ltr450r** » Wed Apr 06, 2011 5:04 pm

I can barely tell a difference with mine.. and thats only at a stoplight when the motor is warm and with a low idle

esfan · Post by **esfan** » Wed Apr 06, 2011 6:00 pm

Try to align the mount to see if it still vibrates like crazy. Mine vibrates too but only during reverse, and after alignning the vibration became less.

Post by **occasional demons** » Wed Apr 06, 2011 8:30 pm

Align them, but if it still idles rough, it will vibrate regardless. You may need to figure a way to get it to idle a bit higher, or lower, in neutral to smooth it out. Easier said than done.

A higher idle is just a matter of creating just enough of a vacuum leak that the IAC cannot compensate for. Whether it is drilling a hole in the throttle plate, or a tee in a vacuum line with some kind of valve you can adjust, is up to you. But the latter would need to be filtered.

garfield3887 · Post by **garfield3887** » Wed Apr 06, 2011 8:50 pm

Check your torque strut alignment, that should fix most of the issue. Just give it sometime also. When i installed mine, plus my Tranny mount inserts i thought my entire interior was gonna vibrate itself to pieces. They will eventually break in and you won't even notice a difference, if even just barely.

My drivers side mirror still vibrates sometimes to the point i cannot see clearly in it, but that's the only thing that i notice anymore. Other than that the car is just as smooth as ever!

g_force58 · Post by **g_force58** » Thu Apr 07, 2011 8:58 am

nolaneon, the vibration with the AGP mounts is pretty severe. I keep wanting to take them off, but, then again, I like the difference in the way the car launches and a lack of play in the drivetrain. The noise level in the cabin is increased and the car drones at speed. I have to say the vibration is more pronounced at lower speeds though. The family doesn't like it so for short trips we take the wife's Kia.

nolaneon · Post by **nolaneon** » Thu Apr 07, 2011 10:03 am

yeah that was my biggest concern my neons currently my daily also, i think ill have to hold off on solid mounts untill i pick up another daily.
thanks man.

darthroush · Post by **darthroush** » Thu Apr 07, 2011 12:36 pm

nerox wrote: now when the car is stationary / on idle the steering wheel vibrates like MAD !!! i cant even hold it still it looks like its about to shake itself off. occasionally when i stop at a set of lights etc it will be perfectly still but will soon start shaking again.

if i increase the revs a little then it stops and it dosen't vibrate at all when driving, only when its on idle.

Mine does this same thing with the black inserts...I've checked torque strut alignment time and time again. It was also done most recently by the shop when my timing belt was replaced.

NickKo · Post by **NickKo** » Thu Apr 07, 2011 12:58 pm

Folks,

I have heard / read that putting motor mount inserts on WORN motor mounts, will cause excessive vibration.

- Nick

gilly02le · Post by **gilly02le** » Thu Apr 07, 2011 2:03 pm

nerox · Post by **nerox** » Thu Apr 07, 2011 3:09 pm

i've just given it a rough measure and even with a cheap plastic rule i can see that it is out!

i'd say its probably 124-126mm by eye but definately over 119mm !!!

darthroush · Post by **darthroush** » Thu Apr 07, 2011 4:20 pm

NickKo wrote:Folks,

I have heard / read that putting motor mount inserts on WORN motor mounts, will cause excessive vibration.

- Nick

Mine were brand new, which is why I put the inserts in; to help make them last longer. *shrugs*

NickKo · Post by **NickKo** » Thu Apr 07, 2011 5:22 pm

darthroush wrote:
NickKo wrote:Folks,

I have heard / read that putting motor mount inserts on WORN motor mounts, will cause excessive vibration.

- Nick
Mine were brand new, which is why I put the inserts in; to help make them last longer. *shrugs*

Cool.
I would do the same thing.

You mentioned that you had a shop do the work the last time..... Did you check the specs on the mounts, to make sure they didn't screw up the job ??

- Nick

srtjesse · Post by **srtjesse** » Thu Apr 07, 2011 8:31 pm

check the plastic bushings that hold in he steering wheel they are bad i have solid motor mounts and dont get nearly half the vibration you are describing

darthroush · Post by **darthroush** » Thu Apr 07, 2011 8:38 pm

NickKo wrote:
darthroush wrote:
NickKo wrote:Folks,

I have heard / read that putting motor mount inserts on WORN motor mounts, will cause excessive vibration.

- Nick
Mine were brand new, which is why I put the inserts in; to help make them last longer. *shrugs*
Cool.
I would do the same thing.

You mentioned that you had a shop do the work the last time..... Did you check the specs on the mounts, to make sure they didn't screw up the job ??

- Nick

It's the same amount of vibration as it was before so I wouldn't think they did. IDK, I'm going to re-check it out of paranoia now...if it stops snowing, again.

g_force58 · Post by **g_force58** » Thu Apr 07, 2011 9:08 pm

Just so you guys know, the stealership here didn't even know the torque strut alignment had to be checked after they removed them. I had to show them what the measurements were and how to do it with a Haynes Manual. I found this out after I had a new clutch installed. They also installed the upper mount cap backward and it squealed everytime you revved it or just going down the road.

Fuzzyneon · Post by **Fuzzyneon** » Fri Apr 08, 2011 8:18 am

ignore all above advice ladies like the vibration

but check to make sure you did them right LOL

ive had solid mounts,filled,half solid, and all red inserts they all vibrate different i dunno i like it at this point "i know its working" kinda thing lol

blue demon02 · Post by **blue demon02** » Fri Apr 08, 2011 10:37 am

Check to make sure your not idling to low. I have stuffed, filled, every possible way with these cars with big cams etc and never had that kind of vibration unless its idle speed is to low.

nerox · Post by **nerox** » Fri Apr 08, 2011 2:28 pm

i've adjusted the alignment and it made no difference, i checked it and adjusted it several times but the vibration is just the same.

I Took the top mount out and removed the insert and put the mount back without the insert and aligned it again and the vibration was MUCH less.

i think ill try taking the bottom one out and see if it goes back to it was before and if it does ... i guess theyll have to stay out

srtjesse · Post by **srtjesse** » Fri Apr 08, 2011 3:11 pm

the steering wheel vibration is the 4 plastic bushings that hold the steering wheel on to the dash frame they need to be readjusted in the place they should be my car was doing the same thing i have solid motor mounts and my car feels like its on stock mounts

Trappy · Post by **Trappy** » Fri Apr 08, 2011 9:14 pm

Your car is probably idling too low. Mine does the same thing just sitting there. I have to pop it in to neutral to stop it. A/C use makes it worse, also.

darthroush · Post by **darthroush** » Wed Apr 13, 2011 3:14 pm

I just checked my alignment yesterday, and if it's off, it's not more than 1MM as far as I can tell. I wish I had a damn throttle adjustment screw on my TB.

akirony · Post by **akirony** » Sat Apr 23, 2011 5:13 pm

Ok sorry to bump this BUT, I just put on the prothane race mounts (ordered street but wth). I dnt feel vibration unless the car is between 1k rpm and 1500 rpm. So pretty much at accel from a stop, but rides smooth at every other speed. Is this the vibration people are complaining about.

darthroush · Post by **darthroush** » Sat Apr 23, 2011 5:50 pm

akirony · Post by **akirony** » Sat Apr 23, 2011 9:22 pm

Guessing i should check my alignment again then. The bolt had came loose a few times before and started moving around. I'll recheck and retighten

2GN.ORG

Prothane MM Insert Vibration Madness !

Prothane MM Insert Vibration Madness !

Prothane MM inserts vibration madness

Re: Prothane MM inserts vibration madness

prothane MM insert vibration madness

Re: Prothane MM Insert Vibration Madness !

prothane MM insert vibration madness