WICKED vibration at 80+MPH
Launching!
Joined: Oct 2007
Posts: 295
Likes: 0
From: Modesto, Ca
and bingo. no harm in the mods tho it really firmed things up for me. of course some people have problems w/ poly mounts tho so swap them out for rubber ones only if you tried everything else. 
people use wicked more than very. ^^^^^Been there and done that! I put a new poly on mine and it vibrated like the car was coming apart. Took it off and just put a rubber one back on and problem solved. 15-20 bucks for a part you can always take back it's worth a try for as easy as they are to change.
TECH Fanatic
iTrader: (5)
Joined: Aug 2007
Posts: 1,053
Likes: 1
From: colorado springs Elevation: 6035 ft
I would have to say tranny mount to. I put a polly mount in mine because I kept breaking stockers and Now have vibration at around 80 mph. I wish I could go back to a rubber mount. i just might.
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TECH Senior Member
iTrader: (3)
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
What brand Poly is everyone having issues with? I've mentioned this oddity before (and it's came from many Camaro users and an Energy Susp. engineer) that the Camaros for whatever reason have an issue with poly trans mounts. No one really understands why though, as what you'll be thinking right now is "they're the same body!", but that engineer started a thread in the Camaro section and was gathering data to try and fix the problem. They even hooked some folks up with full poly kits if they were with in driving distance of their main shop! Then the mods got mad because Energy isn't a sponsor and put the kibosh on all of that :\ The 2 mentioned fixes were removal of that spacer plate (not a spacer, I just can't remember it's name), and another was to also get poly TA mount. Yet a couple people since have said that actually didn't help any... so who knows 
Anyways, I was thinking about putting an Energy back in mine, since I got my new tranny in there. So if no one here is using them, but all are having the problem, I might have to give it a go simply to be a guinea pig!
Anyways, I was thinking about putting an Energy back in mine, since I got my new tranny in there. So if no one here is using them, but all are having the problem, I might have to give it a go simply to be a guinea pig!
I think im using energy suspension mounts, its w/e brand byunspeed carries. I'd look it up but I have an impossible time using his website. no serious vibrations, just a very slight vib under certain driving conditions coming from the tunnel. the motor mounts and T/A mounts are new as of last summer, trans mount was from the summer before.
OP- I was just thinking you should check your LCA's to make sure their tight too
OP- I was just thinking you should check your LCA's to make sure their tight too
i had this same problem broke 3-4 stock mounts in one month so i got a poly one. you do get more vibes but i dont think it would get worse when not in gear. sounds like it would be something else
Thread Starter
Joined: Jul 2007
Posts: 2,861
Likes: 4
From: Ringoes/Flemington, New Jersey
TA bolts are tight. I'm beginning to think its this transmission i got off of ebay :O
if its the mount why would it get worse when I put the car in neutral or push the clutch pedal in? I think its something in the trans
if its the mount why would it get worse when I put the car in neutral or push the clutch pedal in? I think its something in the trans
Thread Starter
Joined: Jul 2007
Posts: 2,861
Likes: 4
From: Ringoes/Flemington, New Jersey
I bought it like 3 years ago for my formula. I damaged the formula and sold it but kept the trans that i bought. I got it off ebay the guy said he had it rebuilt. T56. the trans has a total of maybe 6k miles on it
TECH Regular
Joined: Aug 2007
Posts: 418
Likes: 0
From: Cypress, TX
up the 4L60E, and most definitely, the vibes are way up, but only at a
certain rpm/mph. Previous to the Prothane, the stock rubber mount has
broken a couple of times within a year or so. I suspect the reason the
rubber mount prematurely breaks is because of these weird vibes.
ThoR294 - did ya have the vibration before changing to a Prothane?
Teching In
Joined: Aug 2008
Posts: 38
Likes: 0
From: Central Jersey
I'm getting the same vibrations at those speeds, and just like the OP said, when i put the clutch in they get worse. Everything is stock on my drive train. I haven't check the TA or anything yet but i'll get under there soon enough.
Thread Starter
Joined: Jul 2007
Posts: 2,861
Likes: 4
From: Ringoes/Flemington, New Jersey
When I balance my wheels I don't use the fingers that go into the lug holes... if you guys know what Im talking about. I center it on the machine with the cup (so it centers on the hub). Could this maybe be an issue? I work at a toyota dealer so we do not have the correct thing to center the wheel using that finger thingie