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I have broken motor mounts in many cars (including my vette) and it never caused any of them to pull to the right or left. Why would the engine raising up an inch or two on one side have any effect on how the car tracks? Maybe you can explain the physics behind that?
It's called torque/steer and it isn't hard to explain. Run a straight line on a piece of paper then put something in the front. Then put a point in the rear and twist the rear to the left. Where does the front go? It drops to the right which makes it pull steer to the right. It's like drag only a bit worse. Look at a single engine aircraft. It will torque to the right every time.
Ah geeze.... What I'm trying to get across here is that a lifting motor mount will make you go right...
Howz that for Canadian physics?
Last edited by CanadaGrant; Jun 27, 2014 at 01:10 AM.
If you checked the A-Arm bushing mounts for play and they seemed fine the other failure point is the yokes or maybe the lower struts.
Motor TQ does load one side of a car. If you go to drag races and watch cars doing a water box burn out. typical cars the rear will yaw to the right. Experienced drag racers fix the problem with things like a side to side air pressure change.............
It's called torque/steer and it isn't hard to explain. Run a straight line on a piece of paper then put something in the front. Then put a point in the rear and twist the rear to the left. Where does the front go? It drops to the right which makes it pull steer to the right. It's like drag only a bit worse. Look at a single engine aircraft. It will torque to the right every time.
Ah geeze.... What I'm trying to get across here is that a lifting motor mount will make you go right... Howz that for Canadian physics?
A lot like Three Stooges physics.
You need to Google torque steer. It's a phenomenon with front wheel drive cars unrelated to engine movement.
A single engine aircraft wants to turn because the engine torque is trying to rotate the plane. It has nothing to do with a broken mount and the engine lifting. I've been flying for many years and own a Beechcraft Bonanza.
It's definitely not the motor mounts or tire pressure as has been suggested. I'm ordering trailing arm bushings to replace. I was going to go through the rear end eventually so I figured I'd start here.
I'll give an update in couple weeks when it's done to confirm if this was the problem.
You need to Google torque steer. It's a phenomenon with front wheel drive cars unrelated to engine movement.
A single engine aircraft wants to turn because the engine torque is trying to rotate the plane. It has nothing to do with a broken mount and the engine lifting. I've been flying for many years and own a Beechcraft Bonanza.
I'm a 767 captain and have been flying since I was 16. That was just over 30,000 hours ago.... My fish finder is a 185 on floats.
I think I found the problem. I had the car on the lift car and was about to start removing the trailing arms when I decided to check out the front suspension.
The drivers side lower control arm bushings aren't just bad, they're non-existent. Check the pics.
Is it possible for the bushings to get jarred out suddenly? The car drove fine one day then had this problem the next. Granted, the suspension is far from fresh, but I've never seen bushings just vanish.
Yeah, good catch. I've been following this thread with interest.
Let us know how it handles when replaced.
Don't forget to spray around the garage for those rubber-eating bugs.
I thought it was the uppers that went when you pull wheelies...
good find on the lower bushings. not trying to be a _ss but i thought you said it was just aligned any good tech checks wear points before wasting time setting the thing up???the score groove where the bushing is missing is pretty bad this did not just happen and must make a lot of noise! happy 4th
good find on the lower bushings. not trying to be a _ss but i thought you said it was just aligned any good tech checks wear points before wasting time setting the thing up???the score groove where the bushing is missing is pretty bad this did not just happen and must make a lot of noise! happy 4th
It was aligned about 6 months ago and the tech would have told me if he saw something wrong. It's driven fine since then. The issue came on suddenly.
I always planned on rebuilding the front end because the components were aged but they were all there. It appears to me that they were more dried out and fragile that I had thought and just crumbled and broke out.
I've ordered a rebuild kit and will update in a few weeks when it's done.
I just rebuilt the entire front end. It was badly needed. The back end still jumps out to the left under acceleration. Though not as bad now.
I did notice a little bit of chop on the outside of the right rear tire. It appears that under load that the right rear is turning in causing the rear to move to the left.
I bought trailing arm bushings that I'm going to put in. Is there anything else I should be looking for?
I just rebuilt the entire front end. It was badly needed. The back end still jumps out to the left under acceleration. Though not as bad now.
I did notice a little bit of chop on the outside of the right rear tire. It appears that under load that the right rear is turning in causing the rear to move to the left.
I bought trailing arm bushings that I'm going to put in. Is there anything else I should be looking for?
