LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Vibration above 60mph with energy tranny mount?

Thread Tools
 
Search this Thread
 
Old 08-13-2003, 01:03 PM
  #1  
Registered User
Thread Starter
 
94Zpower's Avatar
 
Join Date: Dec 2001
Location: Montreal, Canada Not Quebec
Posts: 953
Vibration above 60mph with energy tranny mount?

I swaped my stock riped tranny mount for an energy suspension poly mount and now I have a vibration above 60mph!!

I think that the tail of the tranny is now sitting too high and is causing t he drive shaft to pivot too much... does any one have this prob? and is is safe to shim it in order to correct the ds angle?

Thanks!
94Zpower is offline  
Old 08-13-2003, 01:49 PM
  #2  
Registered User
 
1994TransAm's Avatar
 
Join Date: Sep 2001
Location: port huron, michigan
Posts: 1,268
thats why enegry suspension DOESNT MAKE THESE ANYMORE!!!!!


they are too tall and cause a vibration.. if you a want a stronger than stock one that wont break. get the ls1 mount, it has these metal retiners that wont let the metal sperate and keeps the rubber in place.
1994TransAm is offline  
Old 08-13-2003, 01:57 PM
  #3  
Registered User
Thread Starter
 
94Zpower's Avatar
 
Join Date: Dec 2001
Location: Montreal, Canada Not Quebec
Posts: 953
Damnit! I didn't know that until now... but I think I can shim it make it a bit better hopefully it's enough! I hate this vibration! and it may sound stupid but I think the car has lost abi of power... maybe because the ds is pivoted to much or maybe just my Imagination??
94Zpower is offline  
Old 08-13-2003, 02:01 PM
  #4  
Registered User
 
G's Z28-LT1's Avatar
 
Join Date: Aug 2000
Location: Bay Area, Ca
Posts: 81
I think the true cause of the vibration is our wonderfully UNbalanced drive shafts. Installation of the stiffer Poly mount will tend to make the vibration more pronounced. As the mount breaks in, it does get better.
G's Z28-LT1 is offline  
Old 08-13-2003, 02:11 PM
  #5  
Registered User
 
EDS Z28's Avatar
 
Join Date: Oct 1998
Location: Southern CA
Posts: 705
Yep, I had the same problem too. I just put the stocker back on. It does raise the tranny just a little bit, not good.
Ed
EDS Z28 is offline  
Old 08-13-2003, 02:11 PM
  #6  
Registered User
 
curly's Avatar
 
Join Date: Mar 2001
Location: Eastern NC
Posts: 373
Funny this dicussion should pop up... I have the same vibration after installing a ES transmission mount. I thought it was the driveshaft so I put a 1LE on the car and it got better but is not fixed.

Time for a LS1 mount... 1994 Trans Am, you do mean a LS1 mount and not a 1LE mount, right??

One step closer to vibration-free traveling,
Stephen
curly is offline  
Old 08-13-2003, 02:13 PM
  #7  
Registered User
Thread Starter
 
94Zpower's Avatar
 
Join Date: Dec 2001
Location: Montreal, Canada Not Quebec
Posts: 953
I hope so! because I had absolutely no vibration b4 the energy bushing and now it is very bad at 60mph +
94Zpower is offline  
Old 08-13-2003, 02:33 PM
  #8  
Registered User
 
1994TransAm's Avatar
 
Join Date: Sep 2001
Location: port huron, michigan
Posts: 1,268
LS1 not 1LE, they dont make the 1le anymore......

my rebuilder (LT1DAVE) reccamends the LS1 mount
1994TransAm is offline  
Old 08-14-2003, 06:56 AM
  #9  
Registered User
 
curly's Avatar
 
Join Date: Mar 2001
Location: Eastern NC
Posts: 373
Thanks for the information... time to place an order for a LS1 mount. Bye Bye vibrations!!!
curly is offline  
Old 08-14-2003, 07:55 AM
  #10  
Registered User
 
Type_O_Negative_1320's Avatar
 
Join Date: Oct 2001
Location: Cincinnati, Ohio
Posts: 368
Hopefully this isn't the case with the Prothane tranny mount too...I have one sitting in the car, waiting to go on. I have enough vibes as it is with just the stock mount (could be attributed to crappy motor mounts though...they're getting replaced too).
Type_O_Negative_1320 is offline  
Old 08-14-2003, 08:05 AM
  #11  
Registered User
 
ZZtop's Avatar
 
Join Date: Jan 2003
Location: Greenville, SC
Posts: 1,217
I have heard that some people run the ES tranny mount with the metal plate and some without it. Anyone have any experience with this, should the plate be used or not?
ZZtop is offline  
Old 08-14-2003, 06:18 PM
  #12  
Registered User
 
curly's Avatar
 
Join Date: Mar 2001
Location: Eastern NC
Posts: 373
Ordered the LS1 mount this afternoon... will post again once I get it installed if the problem is gone. CROSSING FINGERS!!!
curly is offline  
Old 08-14-2003, 06:44 PM
  #13  
Registered User
 
G's Z28-LT1's Avatar
 
Join Date: Aug 2000
Location: Bay Area, Ca
Posts: 81
Originally posted by ZZtop
I have heard that some people run the ES tranny mount with the metal plate and some without it. Anyone have any experience with this, should the plate be used or not?
I'm running my without the plate. I too had the vibration that everyone is complaining about but it went away as the mount broke in.
G's Z28-LT1 is offline  
Old 08-14-2003, 07:21 PM
  #14  
Registered User
 
94blackz14.2's Avatar
 
Join Date: Jul 2003
Location: Gainesville, FL
Posts: 242
I have the same problem that everyone is talking about, I too put the ES mount on my tranny, and that is when I started to feel a vibration. The only thing is that I don't think that it has to do with the driveline. The reason I say this is because mine occurs at around 2500 rpm in all the gears. I can be crusing down the highway at 70 and put it into nuetral and everything is as smooth as can be. I am leaning on the possiblility that it is my motor mounts, and I am just feeling more vibration because the ES mount is a little stiffer than the stock mount. What do you guys think?
94blackz14.2 is offline  
Old 02-18-2004, 10:49 AM
  #15  
Registered User
 
abarus's Avatar
 
Join Date: Mar 2001
Posts: 141
TTT
abarus is offline  


Quick Reply: Vibration above 60mph with energy tranny mount?



All times are GMT -5. The time now is 05:23 AM.