Results 1 to 18 of 18

Car vibrates after new Tranny mount

This is a discussion on Car vibrates after new Tranny mount within the Manual Transmission forums, part of the Drivetrain category; ok, this is weird.... i installed a new Prothane, polyurethane tranny mount from LM Performance. Anyway, the shifting is a ...

  1. #1
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    Exclamation Car vibrates after new Tranny mount

    ok, this is weird....

    i installed a new Prothane, polyurethane tranny mount from LM Performance. Anyway, the shifting is a lot smoother but the super-dense mount now dissapates all the tranny movement throughout the WHOLE CAR!!! i'm talkin' seat, steering wheel, floor-feels like i have 500 horses but i know i don't....it sucks man??!?! will this shit go away??

  2. #2
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    So to answer my own quesion, i went to LS1Tech.com and found the following:

    Quote Originally Posted by ls1tech
    Prothane (Poly)- hardest - more Noise and Vibration - alot of guys can't take it and swap it out, die hard guys LOVE IT. Best performing, but very harsh, remember it is a performance car, not a Cadillac. Maybe not for a daily driver.

    Energy Suspension (Poly) - Middle of the road - not as harsh as Prothane, but not as soft as stock. Firm enough to get rid of the banging and clunking, but not hard enough to transfer ALL of the Vibrations and noises in to the car.
    Good for a daily driver.

    Stock (rubber) - soft and mushy, quiet ride and no vibrations, great for NORMAL driving, but....Lots of banging and clunking on hard shifts and hard acceleration in lower gears. Lots of shifter movement. The rubber often tears, plan on replacing often. Even then you will still get some banging and clunking.
    oh well...i wish this info was here, but i guess i'm the guinepig for it. Hopefully this will help someone in the future.

    i really am thinking about swapping out my Prothane transmission mount for an Energy Suspension transmission mount

  3. #3
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    OK-Does the harder tranny mount help keep the tranny from moving around when shifting? When I go to shift from 2nd to 3rd the tranny moves and then the shiftgate isn't where it should be-it's a moving target!At least that's what I think is going on-any ideas.I think the tranny mount being stiffer would help but does anybody make stiffer motor mounts also.It's a daily driver but I can live with a little vibration.Who carries the Energy Suspension stuff?

  4. #4
    Senior Member 02z28ls1's Avatar
    Join Date
    Sep 2005
    Location
    near St. Louis
    Posts
    1,205

    navy blue
    2002 Z-28 Camaro M6

    I wanted to move this back up front to see if maybe someone could respond to my last post -yeah-that one!

  5. #5
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    ha! this thread is sooo old...sorry i've not looked here for quite sometime....

    yeah, i had major shift-gate problems that seemed to go away a bit with the install of the new mount. The one i got is rediculous stiff though, i'd suggest the "Energy Suspension" one as i've read it's the "middle ground" compared to mine and GM's stock mount.

    I still have a few shift gate problems, and you mentioned motor mount-it might be worth putting a new one of those in too and i bet the whole drive train would link up perfectly.

  6. #6
    Junior Member
    Join Date
    Aug 2005
    Location
    NOVA
    Age
    42
    Posts
    79

    Black
    2004 Grand Prix GTP

    I just ordered an Energy Suspension mount from lmperformance.com. They seem to have better prices. I'm going to shave off the two "bumps" on top of the mount before I install it. Also there's a seperate plate (can't remember the name) that's included with the kit. I won't be installing this since I figure the bushing will be hard enough as it is. There's a post over at camaroz28.com concerning this.

  7. #7
    Junior Member
    Join Date
    Aug 2005
    Location
    NOVA
    Age
    42
    Posts
    79

    Black
    2004 Grand Prix GTP

    Posted my experience with it at the Mod Review Forum. There's a link to a helpful thread at camaroz28.com. To sum it up, yes there is more noise. No louder than an average aftermarket catback though. If you're experiencing a ton of vibration like in the first post than you may have more problems and the old mount may have just been masking them.

  8. #8
    Tech Junkie hammertime's Avatar
    Join Date
    Nov 2005
    Location
    Belleville, IL
    Posts
    400

    Pewter Metallic
    2001 Camaro SS

    I broke my stock mount during a dreaded 3-2 shift at WOT. I never had any banging or slapping before that, but I certainly did after. I could push the clutch in and coast, then let the clutch out abruptly and get it to slap one direction, then accelerate hard to get it to go back in the other. I got under the car and could lift the tranny and move it around.

    I ordered an Energy Suspension mount from summit and have been very happy with it for over three years. Never a peep from it since.
    Hammer - hammertime.us
    2001 Light Pewter Metallic Camaro SS, 6 speed
    K&N, SLP Lid, SLP y-pipe, GMMG cat-back, Lou's Short Stick - more to come!

  9. #9
    Detailing + Design third_shift|studios's Avatar
    Join Date
    Aug 2005
    Location
    Pittsburgh, PA
    Age
    36
    Posts
    21,719

    My life is a
    Ben Stiller movie.

    wow! i dont' think my tranny mount was that bad! I know for a fact that i'd been driving on a bad one for a while though...i jsut figured it was another of those "it's just how they are things" anyway...the vibes are basically gone now, i can't really feel them, pretty much got used to them

  10. #10
    Junior Member
    Join Date
    Aug 2005
    Location
    NOVA
    Age
    42
    Posts
    79

    Black
    2004 Grand Prix GTP

    That's good to hear! It's funny though...I tried to read every post I could find on poly trans mounts before I got mine. The one thing I noticed was the wide variety of experiences. Some say hardly any noise increase, while other say it's crazy loud.

    I'm considering getting an older 1LE mount I found and trying that. That part is discontinued now, but I think my mount may be getting little quieter. Maybe it's just me and I'm getting used to it. Others report the same experience though.

    I wonder if the temperature makes a difference as well....summer vs. winter driving.

  11. #11
    SUPREME member-oderator oneBADDz's Avatar
    Join Date
    Nov 2005
    Location
    Lost in Texas
    Age
    34
    Posts
    2,683

    Custom Slate Blue
    99 B4C

    Ahhhhhh hammertime. . .i feel for you and the 3-2 at WOT, my best friend did that three times and i don't think he has learned his lesson yet. I'm not putting any more pushrods in for him though. He did it racing a mach one right after they came out and all those stang guys were so cocky about those things and the guy STILL never passed him. 3-2 at WTO back to 3 then to 4, I wanted to cry for his '99 Z, I've never seen a tach jump so high so fast

  12. #12
    Go Vols! x10-wakerider's Avatar
    Join Date
    Aug 2005
    Location
    Memphis
    Age
    33
    Posts
    257

    Black
    SLP Camaro SS

    I have a polyurethane tranny mount and i hate it!

  13. #13
    Story of My Life!! BIG D's SS's Avatar
    Join Date
    Aug 2005
    Location
    Commerce Ga
    Age
    40
    Posts
    4,995

    Black, Blue
    07 TBSS, 07 GSXR1000

    I had the same problem bought a new stock mount and now it is smooth as a Cadillac. Polyurethane mounts suck ass.

  14. #14
    Junior Member 98tadriver's Avatar
    Join Date
    Aug 2005
    Location
    South NJ
    Age
    34
    Posts
    51

    silver metallic
    1998 Pontiac Trans AM

    ive got the energy suspension mount. you can still hear engine vibration and stuff, but it doesnt bother me. it sounds cool actually. almost sounds like i got a different exhaust on it. i snapped my old stock one after i installed spec stage 3

  15. #15
    Tech Junkie hammertime's Avatar
    Join Date
    Nov 2005
    Location
    Belleville, IL
    Posts
    400

    Pewter Metallic
    2001 Camaro SS

    Quote Originally Posted by z_driver1
    Ahhhhhh hammertime. . .i feel for you and the 3-2 at WOT, my best friend did that three times and i don't think he has learned his lesson yet. I'm not putting any more pushrods in for him though. He did it racing a mach one right after they came out and all those stang guys were so cocky about those things and the guy STILL never passed him. 3-2 at WTO back to 3 then to 4, I wanted to cry for his '99 Z, I've never seen a tach jump so high so fast

    I got very lucky. It has happened to me twice, and both times I was able to get the clutch back in before I did any damage. That happened right after I got my car and I was racing my friends 70 Chevelle with .030" over 454 and Edelbrock heads. I still managed to pull him though!

  16. #16
    rgvouter
    Guest

    Question

    Quote Originally Posted by BIG D's SS
    I had the same problem bought a new stock mount and now it is smooth as a Cadillac. Polyurethane mounts suck ass.
    where can you buy a stock mount? been looking all over and cant find the stock rubber one?

  17. #17
    SUPREME member-oderator oneBADDz's Avatar
    Join Date
    Nov 2005
    Location
    Lost in Texas
    Age
    34
    Posts
    2,683

    Custom Slate Blue
    99 B4C

    any parts store

  18. #18
    Member
    Join Date
    Aug 2005
    Location
    Maryland; USA
    Posts
    133
    See signature.

    the strength of a prothane poly mount is well worth any noise / vibration increase. i plan to get on for my 4th gen, have one of my 3rd gen for 2+ years. i couldnt stand my auto tranny flopping around and hitting my tranny tunnel and making my console move around everytime i got on it. for the 3rd gens at least maybe the 4th gens as well, the prothane goes right in and doesnt have any extra pieces, the plate on the es one i think had caused issues with noise and such; not sure if they got rid of the plate or not but u cant go wrong with the prothane one.
    Pontiac Firebird's: 91 Formula 350, 01 Trans Am WS6, Suzuki's: 09 SX4 Crossover, GSX-R's: 06 600 & 07 1K.
    F-Quick Garage & Car Domain

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. new tranny mount
    By JadedBird in forum Drivetrain
    Replies: 18
    Last Post: 07-18-2013, 06:27 AM
  2. tranny mount
    By 10xowner in forum General Help
    Replies: 10
    Last Post: 12-28-2010, 10:54 AM
  3. Clutch/Tranny Vibrates Then Slips
    By Acceleration Junky in forum Manual Transmission
    Replies: 1
    Last Post: 05-29-2008, 04:35 AM
  4. Need a good T56 (LS1) Stock Tranny mount & Torque arm mount..
    By 1slosnake in forum Parts Wanted / Trade
    Replies: 2
    Last Post: 06-19-2006, 04:04 PM
  5. Need a good T56 (LS1) Stock Tranny mount & Torque arm mount..
    By 1slosnake in forum Parts Wanted / Trade
    Replies: 1
    Last Post: 06-13-2006, 06:24 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •