Installing exhaust flex pipe to reduce vibration on manifold?

After checking my Fleetwood for the upcoming season and our Cadillac Club meeting in May unfortunately I found three!! 1 to 1 ½ inch cracks in my RH exhaust manifold. They currently are not very large and it seems to be quite new. As we all know they are hard to get in 'untcracked' condition .

I'm currently looking for a good one, so if somebody knows somebody who has one for sale, I would be very happy.

Now I'm thinking about to install a short exhaust flex pipe between the RH manifold and the Y-connection of the exhaust. at the bottom to reduce the vibrations and tension when the exhaust pipe expands when heated up. Of course the flex pipe shouldn't be too flexible, because the first part of the exhaust and the middle muffler is hold on it place by nothing else, except the manifolds.

Any recommendations about my idea? Did anyone out here already installed a exhaust flex pipe?
Looking forward for this discussion.

Facebook Facebook

Views: 644

Reply to This

Replies to This Discussion

I used a flex coupler on mine when I changed the engine to a 472 with custom dual exhaust.  New cars use a flex coupler for the very reason you discussed- to reduce vibration between the engine and exhaust system. There are literally dozens of lengths and diameters. I went with something like this:

Yes, I'm planning to use the exact same coupler of your picture.

RSS

Photos

  • Add Photos
  • View All

Forum

Gump(Pat Westphal) you’re a gosh darn genius!

Started by Dave Fehrle in 1963/64 Cadillac Specific Discussion. Last reply by Patrick Westphal 22 hours ago. 2 Replies

So I have been having problems with my brake lights. At first I thought it was both sides and turns out it is only the drivers side. Also, I thought the blinker worked and it didn’t and turned out…Continue

Front grill

Started by Phillip Hill in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari on Tuesday. 11 Replies

Hi everyone im currently restoring my my front grill due to some previous clown painting it with silver frost paint and doing a dodgy job I would like to know what parts of the grill are anodised.it…Continue

Steering slack/play

Started by Nile Bolen in 1963/64 Cadillac Specific Discussion. Last reply by Dennis P. DiBari on Monday. 4 Replies

I checked the Help page and did a search on the site but didn't see any subjects on steering play/slack.  Since I had someone complete a front end rebuild (Kanter kit, all the control arm bushings,…Continue

Tags: box, play, steering

Add cruise control/Aftermarket Cruise control

Started by Logan Robb in 1963/64 Cadillac Specific Discussion. Last reply by Michael Vogler on Monday. 12 Replies

Late in the evenings, I wonder about things I will probably never do as I am not that crazy. However, I know someone out there has tried it or wanted it bad enough they have done it. My 64 Fltwd did…Continue

Blog Posts

1963 RHS A/C kick panel - photos needed

Posted by SK on June 2, 2025 at 2:20pm 2 Comments

Could someone post front and back photos of the 1963 right-hand kick panel with A/C?

My car didn’t come with the original kick panels, so it's a bit of a mystery to me how I should cut the backing board and carpet to fit around the A/C.

Many thanks,

-Samu

Edelbrock Carb Block off Plates

Posted by Chase on March 12, 2025 at 2:05pm 14 Comments

Hey guys,

I have installed the same Edelbrock carb and have done everything the same as Jason’s carb and intake project. In the spring and summer months the car starts, runs and idles great! In the fall and winter months on a cold start, the car starts awful and wants to die until it warms up. I have to keep my foot on the throttle until it warms up or it will idle just terrible and try to die. Once it’s warm, it runs fantastic! Whats going on here? I was thinking of removing the…

Continue

'63 Tailfin Tales

Posted by Mark Mata on February 22, 2025 at 5:00pm 9 Comments

New old stock seat material

Posted by Ray Schick on August 22, 2024 at 6:25pm 2 Comments

I bought this seat material thinking that it’s…

Continue

Videos

  • Add Videos
  • View All

© 2025   Created by Jason Edge.   Powered by

Badges  |  Report an Issue  |  Terms of Service