Polyurethane Transmission Mounts
#1
Polyurethane Transmission Mounts
Hey guys I I just picked up some polyurethane transmission mounts for the HHR. I had to do a little digging but eventually found that the Cobalt has the same mounts as the HHR. I ended up ordering the TTR Cobalt 2.2/2.4 manual transmission mounts. They are not listed as a fit for the HHR, but they work perfectly. Install was simple and they come with easy to follow instructions.
I have about 20 miles on them. My wheel hop is gone so far. I was getting hop when I was just starting to roll in 1st gear and mashed it. Now I get smoother wheel spin. The car also feels like it is one solid unit now. The manual backlash is improved tremendously. Transitions between accel/decel are much smoother. I would describe the stock mounts as mushy after putting these in. The one downside is vibrations. It is a very noticeable difference at the idle range and taking off in 1st, but otherwise vibrations are really subtle. The vibs are said to lessen after a bit of break in, but if they stayed the same as the first drive I would still not complain because the car feels way better to me, but I don't mind a little NVH.
Here are a few pics of the mounts:
Stock mounts with inserts removed
TTR Bushings pressed in.
I have about 20 miles on them. My wheel hop is gone so far. I was getting hop when I was just starting to roll in 1st gear and mashed it. Now I get smoother wheel spin. The car also feels like it is one solid unit now. The manual backlash is improved tremendously. Transitions between accel/decel are much smoother. I would describe the stock mounts as mushy after putting these in. The one downside is vibrations. It is a very noticeable difference at the idle range and taking off in 1st, but otherwise vibrations are really subtle. The vibs are said to lessen after a bit of break in, but if they stayed the same as the first drive I would still not complain because the car feels way better to me, but I don't mind a little NVH.
Here are a few pics of the mounts:
Stock mounts with inserts removed
TTR Bushings pressed in.
Last edited by hhrfreek; 08-11-2011 at 08:35 PM.
#6
No never stated it did, this member looked it up, thought they were the same, ordered and tried. And it worked.
We do not have a HHR to test fit these on. No modifications needed, per the poster above. We take no credit on this fitment check, he was just sharing/passing it on.
We do not have a HHR to test fit these on. No modifications needed, per the poster above. We take no credit on this fitment check, he was just sharing/passing it on.
#8
Geez! These things have stopped my wheelhop so much. I am really happy with overall car feel performance wise. Though I will say, after putting a few more miles on the car, taking off in first gear and various low rpms (800-1100rpm) does send vibes through the car. Idle is fine. The vibes are at low rpms with an engine load. At all other rpms it feels totally stock.
I had traction bars installed with my old stock/poly mounts and they helped alot with wheelhop, but they were just clanky as hell and people always asked what that noise was(sounded like the sway links were bad). I pulled them off since I installed the TTR mounts and its nice not dealing with the jarring of the road going straight into my sub-frame. I had a chance to thrash the HHR a bit on dry and wet pavement yesterday and wheelhop is almost nonexistent. I am going to compliment the trans mounts with the TTR solid engine mount after I finish up a few other HHR projects I have in the works.
I had traction bars installed with my old stock/poly mounts and they helped alot with wheelhop, but they were just clanky as hell and people always asked what that noise was(sounded like the sway links were bad). I pulled them off since I installed the TTR mounts and its nice not dealing with the jarring of the road going straight into my sub-frame. I had a chance to thrash the HHR a bit on dry and wet pavement yesterday and wheelhop is almost nonexistent. I am going to compliment the trans mounts with the TTR solid engine mount after I finish up a few other HHR projects I have in the works.
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