On former cars Ive used the UUC transmission mounts and enforcers with very good results, mainly much better shift feel and drivetrain efficiency. Obviously there is an increase in cabin noise and vibration. In two cars the in cabin exhaust note got louder.
Just for the hell of it, I bought the UUC transmission mounts to try on the 318 and installed them during my lunch break. On the 318 its a direct bolt in, the ONLY difference is that the new mounts are 2.5mm taller than the squishy, tired, 13 year old ones they replaced. Onr thing that can NOT be used are the transmission mount enforcers as they will make the whole assembly much too thick.
How does it feel? Well, there is a LOT more vibration at any speed. Defintaely can hear the driveshaft spin, increase in cabin exhaust tone and best of all, the car sounds real mean and lound under hard accleration. Will probably go under the car tonight to slightly reduce the torque on some of the mount nuts ( there tends to be some extra vibration if slightly overtorqued).
I will say that the mounts have made my driveline much more efficient to the point of making weaknesses much more obvious - the clutch. It feels as if my clutch is slipping just enough to affect acceleration. Keep in mind that my prior experience with these mounts have been with cars whose clutches had less than 30k miles on them, not 100600 miles.
I do have a concern. Does anyone know how much of a deflecion upward the driveshaft can handle? I know it is customary for the rubber components to compress with age so I figured that my real height difference would only be
1-1.5mm.
I suppose if the driveshaft deflection angle is an issue I could make two metal plate shims to place under the transmission crossbrace where it bolts into the bottom of the car, thus effectivley lowering the transmission to where it was approximately with the stock mounts.
Just for the hell of it, I bought the UUC transmission mounts to try on the 318 and installed them during my lunch break. On the 318 its a direct bolt in, the ONLY difference is that the new mounts are 2.5mm taller than the squishy, tired, 13 year old ones they replaced. Onr thing that can NOT be used are the transmission mount enforcers as they will make the whole assembly much too thick.
How does it feel? Well, there is a LOT more vibration at any speed. Defintaely can hear the driveshaft spin, increase in cabin exhaust tone and best of all, the car sounds real mean and lound under hard accleration. Will probably go under the car tonight to slightly reduce the torque on some of the mount nuts ( there tends to be some extra vibration if slightly overtorqued).
I will say that the mounts have made my driveline much more efficient to the point of making weaknesses much more obvious - the clutch. It feels as if my clutch is slipping just enough to affect acceleration. Keep in mind that my prior experience with these mounts have been with cars whose clutches had less than 30k miles on them, not 100600 miles.
I do have a concern. Does anyone know how much of a deflecion upward the driveshaft can handle? I know it is customary for the rubber components to compress with age so I figured that my real height difference would only be
1-1.5mm.
I suppose if the driveshaft deflection angle is an issue I could make two metal plate shims to place under the transmission crossbrace where it bolts into the bottom of the car, thus effectivley lowering the transmission to where it was approximately with the stock mounts.
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