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 dumb front subframe question

 Created by: Morninglightmountain
Orig. Posting Date User Name Edit Date
Sep 30, 2020 02:56AM 1963SV2  
Sep 30, 2020 02:47AM Dan Moffet  
Sep 29, 2020 10:37PM Alex  
Sep 29, 2020 05:04PM Morninglightmountain  
Sep 29, 2020 04:46PM 1963SV2  
Sep 29, 2020 04:21PM Morninglightmountain  
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 Posted: Sep 30, 2020 02:56AM
1963SV2
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Quote:
Originally Posted by Alex
Quote:
Originally Posted by 1963SV2
No need for support.  Just remove and replace; the bolt is not really structural. 

Think about where the load goes should you fit a plastic front end.

cheers, Ian

Well, it is really a bit structural while you're mobile.
There's a damn good reason you need brace bars from the bulkhead to the front subframe mount when doing a flip front...

I had the teardrops rot out and fail on Betty, and the difference once the front of the 'frame was tied into the car again was palpable.

Having said that, while stationary and level, you can normally pull the bolt out and replace it easily - ironically jacking the car up forces the 'frame up and snags the bolt.

You could be right... we only ever had the MkI style twin bolt subframe.... which is as rigid as you would ever want.

Teardrops and rubber mounts are just not part of my world. 

Cheers, Ian

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 Posted: Sep 30, 2020 02:47AM
Dan Moffet
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CA
When you remove the existing bolt, you may have shims or washers between the subframe and car nose. Make sure you keep them in place. If you remove them, it will change the shape of the wing and the tire may rub if you have minimal clearance with the steering hard left.

.

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

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 Posted: Sep 29, 2020 10:37PM
Alex
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GB
Quote:
Originally Posted by 1963SV2
No need for support.  Just remove and replace; the bolt is not really structural. 

Think about where the load goes should you fit a plastic front end.

cheers, Ian

Well, it is really a bit structural while you're mobile.
There's a damn good reason you need brace bars from the bulkhead to the front subframe mount when doing a flip front...

I had the teardrops rot out and fail on Betty, and the difference once the front of the 'frame was tied into the car again was palpable.

Having said that, while stationary and level, you can normally pull the bolt out and replace it easily - ironically jacking the car up forces the 'frame up and snags the bolt.

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 Posted: Sep 29, 2020 05:04PM
Morninglightmountain
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Quote:
Originally Posted by 1963SV2
No need for support.  Just remove and replace; the bolt is not really structural. 

Think about where the load goes should you fit a plastic front end.

cheers, Ian
good point!  thank you for the reassurance. 

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 Posted: Sep 29, 2020 04:46PM
1963SV2
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No need for support.  Just remove and replace; the bolt is not really structural. 

Think about where the load goes should you fit a plastic front end.

cheers, Ian

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 Posted: Sep 29, 2020 04:21PM
Morninglightmountain
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i'm going to install a tow hook on the front left side.
can I remove/replace the one subframe bolt without a jack or should I support the body and subframe while pulling the bolt?
thanks
steve