Body Mount Tape - Width

[Edgemontvillage]

There are a couple of threads on this subject however no posts confirming the actual width of the original body mount tape used by Fisher Body during the 1969 model year to seal the #3 body mount holes. Aftermarket tape is 1 1/2" wide which seems narrow vs the original. A couple of posts noted the approximate width of the original tape at 2" however I'd appreciate if a Member with an original car could confirm the actual width of the tape used by Fisher?

[68camaroz28]

Kind of hard to measure but it seems the width of the cushion is about correct. Have to admit I used the available width Lloyd. Here is a picture of Skip's 69 mount and tape and believe it gives a fair assessment of width.

[Edgemontvillage]

Thanks Chick, I’m hoping a Member can post a measured width. It makes me wonder when I see photos like this. If this an original a radiator support mount bolt and washer were used

[R68GTO]

This is not definitive as the tape is very brittle and curled a bit on the edges, but here's a measurement from a "tail" I removed from a 15,000 mile car this morning.  If I was to venture a guess based on this piece, I would say it's close to 2 1/2".

[67CruiseMaster]

Curious. What was that tape used for during assembly?

[77thor]

Wow. I was not aware that they even used tape.

Learn somethin' new every day.

[Danzo]

Curious. What was that tape used for during assembly?

Read the first post, it's in there.

[68camaroz28]

Curious. What was that tape used for during assembly?

Read the first post, it's in there.

In that body mount if tape had not been used water would go in the interior compartment when they completed some type of pressure watger leak test.

[firstgenaddict]

Thanks Chick, I’m hoping a Member can post a measured width. It makes me wonder when I see photos like this. If this an original a radiator support mount bolt and washer were used

That appears to be the 67-68 & possibly EARLY 69- style bolt arrangement which used a spring washer between the bolt and the flat washer.

[Edgemontvillage]

Curious. What was that tape used for during assembly?

Read the first post, it's in there.

According to John Z, Fisher body performed a 3 minute under-body water spray penetration test (well before the subframe was installed) which required the rear body mount holes (subframe to body) and rear shock tower holes to be sealed with tape. The tape covering the body mount holes was pierced by the body mount bolts during subframe installation and sandwiched between the bushing/cushion and floor pan which made it possible for some examples to survive (see above photos).

[Edgemontvillage]

This is not definitive as the tape is very brittle and curled a bit on the edges, but here's a measurement from a "tail" I removed from a 15,000 mile car this morning.  If I was to venture a guess based on this piece, I would say it's close to 2 1/2".

Thanks for posting, is the tape from a 69 Camaro? Is your 2 1/2" figure based on your estimate of the width of the tape or the length?

[68camaroz28]

Thanks Chick, I’m hoping a Member can post a measured width. It makes me wonder when I see photos like this. If this an original a radiator support mount bolt and washer were used

That appears to be the 67-68 & possibly EARLY 69- style bolt arrangement which used a spring washer between the bolt and the flat washer.

James, know you work on these rascals all the time but I've never seen that bolt head other than used for the radiator support and its not the part # called out in the AIM. What is normally seen is the RBW bolt which is on the left.

[68camaroz28]

Thanks Chick, I’m hoping a Member can post a measured width. It makes me wonder when I see photos like this. If this an original a radiator support mount bolt and washer were used

That appears to be the 67-68 & possibly EARLY 69- style bolt arrangement which used a spring washer between the bolt and the flat washer.

James, know you work on these rascals all the time but I've never seen that bolt head other than used for the radiator support and its not the part # called out in the AIM. What is normally seen is the RBW bolt which is on the left.

I get it now James as your reference to the washer not the incorrect use of a radiator support bolt. I believe you posted this picture some years ago which does well showing 67/68. Sorry Lloyd for the side track.

[R68GTO]

This is not definitive as the tape is very brittle and curled a bit on the edges, but here's a measurement from a "tail" I removed from a 15,000 mile car this morning.  If I was to venture a guess based on this piece, I would say it's close to 2 1/2".

Thanks for posting, is the tape from a 69 Camaro? Is your 2 1/2" figure based on your estimate of the width of the tape or the length?

Yes, 69 Camaro.  There was a tail on each side of the bushing, the tail in the photo was toward the front of the car.  I say it's width because it seems counter-intuitive to say that someone would tear or cut tape shorter than the width.  Anyone know what the hole diameter is on the floor pan?  One can safely assume that the tape width is slightly larger than the hole diameter so the worker at Fisher didn't have to pay too much attention when performing this task.

[firstgenaddict]

The radiator support bolts are not the same size, they are a smaller thread size by 2 sizes or so. 
The main subframe to body bolts must be 5/8" threads and I believe the rad support are 7/16.