Bad transmission mount?
#1
Bad transmission mount?
I was making my third run in an autocross on Saturday and shift from 2nd the 3rd in a fast left hand corner. I ended up finding first and spinning off the track backwards. I never let the clutch all the way out and didn't appear to damage my engine. On my next run, I paid close attention to my shifting in the same spot and the car tried to going into first again. The was my second shift to third on each run, with the first being in a straight. I checked my transmission mounts today and they don't appear to be cracked but, I can move the transmission easily with my fingers. Are transmission mounts supposed to be that soft or are mine worn out? My motor mounts appear to still be very firm.
#3
#4
An engine damper helped
#6
Community Organizer
Motor mounts and a trans mount. Remember, the trans is attached to the motor, where one goes, the other follows.
#7
I'm considering getting an ETD to help my mounts out now. Might just take the plunge and get Spoon engine and trans mount set. Pretty much get the set for the price of one OEM mount...and it's Spoon Sports so no qualms about quality and fitment there.
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#8
Same here...
I was making my third run in an autocross on Saturday and shift from 2nd the 3rd in a fast left hand corner. I ended up finding first and spinning off the track backwards. I never let the clutch all the way out and didn't appear to damage my engine. On my next run, I paid close attention to my shifting in the same spot and the car tried to going into first again. The was my second shift to third on each run, with the first being in a straight. I checked my transmission mounts today and they don't appear to be cracked but, I can move the transmission easily with my fingers. Are transmission mounts supposed to be that soft or are mine worn out? My motor mounts appear to still be very firm.
So without taking it to a garage I notice brown around the black rubber engine mount on the passenger side. Is the brown the internal fluid? If so I found at least one of my problems.
Anyone with advice or similar personal experiences with solutions (just replace motor and transmission mounts)?
Thanks!
#9
Registered User
Older thread but does anyone know the solution this member found (hopefully)? I have literally the exact same issue in higher speed autocross courses where it won’t go 2nd to 3rd sometimes or worse misaligns to the point that I go into 1st for a split second (spun once last summer hitting 1st - ruining my day w/cone damage - then nearly spun again last week going 2nd to 1st - barely getting into 1st).
So without taking it to a garage I notice brown around the black rubber engine mount on the passenger side. Is the brown the internal fluid? If so I found at least one of my problems.
Anyone with advice or similar personal experiences with solutions (just replace motor and transmission mounts)?
Thanks!
So without taking it to a garage I notice brown around the black rubber engine mount on the passenger side. Is the brown the internal fluid? If so I found at least one of my problems.
Anyone with advice or similar personal experiences with solutions (just replace motor and transmission mounts)?
Thanks!
#10
Yes, brown residue is the internal damping fluid from the mount. A sure sign of mount failure.
I highly recommend adding an engine torque damper, ETD, once you replace the engine mounts. This will protect the mounts and give them a much increased lifespan (they ain't cheap), as well as greatly reduced overall engine motion, without increasing vibes or harshness by much at all.
The reduced motion improves shift feel, and makes for a more direct response to throttle inputs. I can imagine that being especially useful in autocross, even moreso than on a road course.
I highly recommend adding an engine torque damper, ETD, once you replace the engine mounts. This will protect the mounts and give them a much increased lifespan (they ain't cheap), as well as greatly reduced overall engine motion, without increasing vibes or harshness by much at all.
The reduced motion improves shift feel, and makes for a more direct response to throttle inputs. I can imagine that being especially useful in autocross, even moreso than on a road course.