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Which bumper end rusts out? 1952 to 1957.

Started by Bob Hoffmann CLC#96, August 13, 2023, 11:32:46 PM

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Bob Hoffmann CLC#96

Guys,
I've heard that one side rusts out sooner because of the heat riser. What's your experience?
Bob
1968 Eldorado slick top ,white/red interior
2015 Holden Ute HSV Maloo red/black interior.
             
Too much fun is more than you can have.

Cadman-iac

  Are you referring to the bumper ends that have the exhaust going through them, or all the bumper ends regardless of an exhaust port?

 Speaking for the 1956 model, I have 3 bumpers, and as far as I know none have rusted out on either side. But they do have the usual rust on the backsides where the chrome wasn't very good to begin with.

 Don't know if this helps or not.

  Rick
CLC# 32373
1956 Coupe Deville A/C car "Norma Jean"

 Nothing is foolproof to a sufficiently talented fool.

 Remember,  no matter where you go, there you are.

Bob Hoffmann CLC#96

All the bumper ends regardless of the port.
1968 Eldorado slick top ,white/red interior
2015 Holden Ute HSV Maloo red/black interior.
             
Too much fun is more than you can have.

V63

Typically corrosion is accelerated on the curb side which is exposed to more water and road sediments. in the US that would be the right side.

Cadman-iac

Quote from: V63 on August 14, 2023, 02:51:32 AMTypically corrosion is accelerated on the curb side which is exposed to more water and road sediments. in the US that would be the right side.

 That's good to know. I've never had to deal with the salt issues here in Arizona, so that never crossed my mind. But it makes perfect sense.
 Thanks.

 Rick
CLC# 32373
1956 Coupe Deville A/C car "Norma Jean"

 Nothing is foolproof to a sufficiently talented fool.

 Remember,  no matter where you go, there you are.

James Landi

The bumperettes rust from trapped road debris caught between the exhaust liner and the interior of the chrome section...very disappointing.   I replaced the entire rear bumper back in the early 70s because of rust through.   The replacement bumper had a diamond ring lodged in the interior of a bumperette..."the prize INSIDE "

Lexi

#6
Plus it is an area where much condensation can form because of the exhaust passing through that area. Road debris as James pointed out also traps the moisture causing further damage due to lack of dissipation. Cadillac must have realized this as I recall they put drainage ports in the bottom of at least the '56s, but that would do nothing to alleviate the condensation build up inside the bumper end. The long bumper centers don't seem to be affected. Check out these images of a pair of shot '55 bumper ends. Clay/Lexi

James Landi

The integrated exhausts as an attractive design feature also created burn hazards.  While using a bike rack on my 56, the 2 bike tires literally roasted and blew out I also received a painful burn on my leg while wearing shorts.

Cadman-iac

Quote from: James Landi on August 15, 2023, 08:26:35 AMThe integrated exhausts as an attractive design feature also created burn hazards.  While using a bike rack on my 56, the 2 bike tires literally roasted and blew out I also received a painful burn on my leg while wearing shorts.

 An unfortunate result of the design for sure.
 But I still think it's a great looking design, especially the 56.

  Rick
CLC# 32373
1956 Coupe Deville A/C car "Norma Jean"

 Nothing is foolproof to a sufficiently talented fool.

 Remember,  no matter where you go, there you are.

Lexi

Yes, I agree. The '56 ports look like after burners on a jet fighter, with an eye catching shape. Clay/Lexi

Bob Hoffmann CLC#96

OK guys, so much for the aesthetics. 
To re-phrase... I've seen cars with  one exhaust port as new & the other side rusted. Lets not compare salt belt junk. Does a stuck heat riser divert the heat to the LH port allowing the RH side to run cold?? Then, which side  gets rusty. Your direct experience???
Bob
1968 Eldorado slick top ,white/red interior
2015 Holden Ute HSV Maloo red/black interior.
             
Too much fun is more than you can have.

V63

Rust belt or not the right side is more probable to be exposed to more moisture (pooling water) and also mud or sediments due to the crowning of road surfaces flowing to the curb side which is on our right in the US .


Lexi

Makes sense. Attached image shows a pair of matching '56s. Even though no rust out yet, the RH bumper end is indeed the worst for wear. Not sure where these parts came from in the US. Clay/Lexi