All the posts about the rear thud on takeoff!
#1
Member
Thread Starter
Join Date: Nov 2008
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28 Convertible
Engine: 305 TPI
Transmission: 700R4
All the posts about the rear thud on takeoff!
This is one of the problems I first noticed after I bought my car. I typed in Thud in the search and read tons of threads where everyone asked about this problem. I read all the responses and today was going to tackel this problem. I bought a floor jack and stands and can now somewhat slither under the car.
After all the reading I did last night I thought I'd find the problem easily. WRONG.. I can't find anything broken or loose. None of the treads show any pictures of exzactly what to pry or poke at and most posters never followed up with what they found was the problem or any pictures of broken parts.
Is that huge long steel bar that runs parallel to the driveshaft suppost to be what is usually broken? Transmission mounts? Where exzactly are these? Where the transmission bolts to the engine? The only thing I found broken is one bolt pictured below. Is this my problem? That braket is rock solid even with the broken bolt. Can anyone post any pictures as to exzactly what could be the cause of this problem. Took me a long time to get the car all jacked up to where it is and don't want to take it down till I find what is broken. Thanks Mike
After all the reading I did last night I thought I'd find the problem easily. WRONG.. I can't find anything broken or loose. None of the treads show any pictures of exzactly what to pry or poke at and most posters never followed up with what they found was the problem or any pictures of broken parts.
Is that huge long steel bar that runs parallel to the driveshaft suppost to be what is usually broken? Transmission mounts? Where exzactly are these? Where the transmission bolts to the engine? The only thing I found broken is one bolt pictured below. Is this my problem? That braket is rock solid even with the broken bolt. Can anyone post any pictures as to exzactly what could be the cause of this problem. Took me a long time to get the car all jacked up to where it is and don't want to take it down till I find what is broken. Thanks Mike
#2
Member
Thread Starter
Join Date: Nov 2008
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28 Convertible
Engine: 305 TPI
Transmission: 700R4
Re: All the posts about the rear thud on takeoff!
I this black bar suppost to be what breaks all the time and is a $10 part? mine is rock solid.
----------
Do I dare start the car put it in drive and rev it? If I look underneath while someone does this willit be ovious what the problem is?
----------
Do I dare start the car put it in drive and rev it? If I look underneath while someone does this willit be ovious what the problem is?
Last edited by MYZ28NH; 12-27-2008 at 03:51 PM. Reason: Automerged Doublepost
#3
Moderator
iTrader: (5)
Re: All the posts about the rear thud on takeoff!
The single bolt in the center of the cross member holds the trans mount. Look directly above that bolt. In the pic the mount appears to be split.
----------
Torque arm. It doesn't break, but its mount (its bracket is shown above) sometimes requires replacement. The OE mounts are rubber and eventually succumb to age.
I wouldn't recommend starting the car while it's on stands.
JamesC
----------
I wouldn't recommend starting the car while it's on stands.
JamesC
Last edited by JamesC; 12-27-2008 at 04:24 PM. Reason: Automerged Doublepost
#4
Member
Thread Starter
Join Date: Nov 2008
Posts: 138
Likes: 0
Received 0 Likes
on
0 Posts
Car: 91 Z28 Convertible
Engine: 305 TPI
Transmission: 700R4
Re: All the posts about the rear thud on takeoff!
Thanks James, the bracket with the broken nut......I put a pry bar through the bracket and the transmission does move up and down.
Now to fix the problem...can I just remove the other 3 bolts and will this whole bracket just drop down? Is this whole bracket and what's broken above one piece? Or is the new piece I need to buy something seperate that just bolts to the braket in the picture using that center nut?
Now to fix the problem...can I just remove the other 3 bolts and will this whole bracket just drop down? Is this whole bracket and what's broken above one piece? Or is the new piece I need to buy something seperate that just bolts to the braket in the picture using that center nut?
#5
Moderator
iTrader: (5)
Re: All the posts about the rear thud on takeoff!
JamesC
Last edited by JamesC; 12-27-2008 at 05:03 PM.
Thread
Thread Starter
Forum
Replies
Last Post
maroe624
Transmissions and Drivetrain
4
04-16-2017 08:29 AM
eightsixseven
Tech / General Engine
1
08-14-2015 03:09 PM