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 Posted: Mar 23, 2019 05:32PM
 Edited:  Mar 23, 2019 10:04PM
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Quote:
Originally Posted by Spank
Open the hood and grab the valve cover with both hands and try to push the engine back and forth and see if you get any movement.
I wasn’t able to get any movement of the engine by hand. That’s why I began looking elsewhere for my “clunk.” It wasn’t until I was adjusting my valves and rocked the car back-and-forth in gear that I saw significant engine movement.

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports

 Posted: Mar 23, 2019 12:13PM
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CA
Quote:
Originally Posted by Bullet18
We took the hood off and drove it around. I can definitely see the engine moving around alot. How many mounts/steady bars are there and where are they? I see the one on the top by the clutch but theres gotta be more.
Have a read through the other thread in the "link" posted by Rosebud. Click on it. All the details you need are there. And some ideas on problems you might discover on the way to sorting this out. The rocking of the engine under working load is enough to make the front subframe rock. (It can actually result in metal fatigue cracks in the floor!)The engine has two engine mounts attached to the subframe. The engine and transmission may have one to 3 or 4 "steadies". The subframe has 6 points of connection to the car body, most if not all may have rubber in them. 
 

.

"Hang on a minute lads....I've got a great idea."

 Posted: Mar 23, 2019 08:57AM
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Reminds me of the time I rented my Mini for James May and Oz somebody to drive around San Francisco and the Wine Country for a special. When May got out of the car at the end to give it back to me, he said, "Reminds me a lot of my first Mini. Needs dogbone bushings!"

 Posted: Mar 23, 2019 07:50AM
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We took the hood off and drove it around. I can definitely see the engine moving around alot. How many mounts/steady bars are there and where are they? I see the one on the top by the clutch but theres gotta be more.

 Posted: Mar 23, 2019 07:00AM
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Looking at your forum it seems like you had the exact same symptoms i have now. 

 Posted: Mar 23, 2019 06:33AM
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Before taking the bonnet (hood) off and driving around (I doubt you'll see much anyway) try this:

With the engine and handbrake off and the transmission in 4h gear, open the bonnet and face the engine bay. Grasp the slam panel (the cross-member onto where the bonnet latches) and push/pull the car back and forth with all your might. If the engine is at all loose, you will see it move - it won't move much but it will move. In one direction or the other, you should hear the clunk.
Explanation: you may not be strong enough to rock the engine enough to replicate the movement and clunk but with the slack in the gear train, you can get the weight of the car moving just enough so that when the slack is taken up the small momentum of the car is enough to apply torque to the engine and rock it - the same as when you suddenly lift of the gas and go into engine braking.

.

"Hang on a minute lads....I've got a great idea."

 Posted: Mar 23, 2019 05:48AM
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I cant move it by hand. It doesn't seem to move that much when i rev it in neutral either. Im gonna take the hood off and see what happens when i drive around.

 Posted: Mar 22, 2019 06:56PM
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The loud BANG is often times the carburetor banging against the firewall. You would be well-served to find the source and quickly.

Open the hood and grab the valve cover with both hands and try to push the engine back and forth and see if you get any movement. if you do, check the dogbone bushings that are on the left side of the motor as you are facing it.

 Posted: Mar 22, 2019 06:50PM
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It took me forever to diagnose my loose engine steady. [link]

 

Michael, Santa Barbara, CA

. . . the sled, not the flower

      Poser MotorSports

 Posted: Mar 22, 2019 05:29PM
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I have an a+1275 mini that makes a loud bang whenever I get on or off the throttle. It sounds like something hitting the firewall but im not sure. Does this mean i have a bad bushing somewhere?