1928 Chrysler Model 72 Roadster Exhaust System Dimensions

[leomara]

From the exhaust manifold back I have nothing.  This photo was provided as a probable solution.  Can someone please provide some measurements for me?

[Gunsmoke]

I have nothing to offer regarding a 1928 Model 72, but I did have to make an exhaust setup for my 1931 CD8 Roadster. For my car, the exhaust pipe had a quick inward bend of about 5-10 degrees as it left manifold (so exhaust pipe could line up with hole in side pan below), and then went down in a quick over 90 degree curve through an oval shaped hole in the engine side pan (I had to slightly enlarge this hole to get clearance), then run along underside of engine side pan within about 1/2", then after a couple of bends, went through a relatively tight hole in cross member and then onto the muffler (I bought a suitable muffler at local muffler shop). I had to cut/bend/weld my first effort several times to get a decent fit. Plan is to eventually remove this "trial effort" and take to a shop to have a better one made.

 

From that point, the tail pipe in 2 pieces (may have been 1 piece originally) clamped to muffler with an original heavy steel hangar at rear of muffler (secured to a second cross member) and then rearward and up over rear axle and out the back, with last portion hanging on a bracket affixed to gas tank strap. There is also a hanger at rear of gas tank (don't have a photo) that keeps the vertical hump in a vertical position. It supports upward angle of the pipe as it comes down from over rear axle.

 

I suggest you use some stiff wire and make a center line pattern for exhaust pipe only (Manifold to Muffler), and once you have a good pattern that clears everything, have a shop make a trial exhaust pipe to clear all the various things you need to clear and that will clamp to muffler. Fit it in place. This is tricky part. Because most shops cannot do precise bends like a factory system, you may need to cut/bend/weld pipe and reform it slightly to finesse to through all the things in the way. Repeat process for tailpipe. This is a very ticklish job for mine, even a couple of degrees of over bending can throw assembly off.  Some people might suggest just using a pipe thaT HANGS MUCH LOWER AND CLEARS EVERYTHING, BUT ON MY CHRYSLER, NONE OF THIS PIPING CAN BE SEEN.(EXCUSE CAPS, HIT wrong key!). 

 

If your car is able to be taken to a shop and the system made up on the hoist with a good installer, it would likely make it simpler, but guy would need to take time and be patient. For exhaust pipe specifically, it may mean making a rough one first and after some tweaking, making a final one. Pictures are taken in order Manifold to Tailpipe. Good Luck. 

[viv w]

Have you tried Waldronexhaust.com to see if they have one for your car.

[pre1939chrysler]

That 60 pipe should be straight and about the same as my car. Try to find where the handing brackets were.

My car is visiting so we can't look.

[leomara]

Hey viv w, Waldron Exhaust are the people who supplied me with the photo.....asking me to verify it was correct!

[leomara]

Gunsmoke, thank you for your detailed instructions, it definitely sounds like a plan.  I was also thinking of flexible exhaust pipe which could be used as a pattern once it was shaped and had been run in to firm it up.

[viv w]

Sorry I can't help with pictures or measurements as both my cars are right hand drive and even the exhaust manifolds are different. Yes the RHD manifolds are not the same as a LHD car, because they need to clear the steering column. 

 This is something guys probably do not know, one of my friends imported a Model T Ford exhaust and was complaining that it would not fit for the same reason, so if you have a right hand drive car be aware that the exhausts from USA most likely will not fit.

[31 LaSalle]

On 5/23/2023 at 10:01 PM, viv w said:

Sorry I can't help with pictures or measurements as both my cars are right hand drive and even the exhaust manifolds are different. Yes the RHD manifolds are not the same as a LHD car, because they need to clear the steering column. 

 This is something guys probably do not know, one of my friends imported a Model T Ford exhaust and was complaining that it would not fit for the same reason, so if you have a right hand drive car be aware that the exhausts from USA most likely will not fit.

I have a 1928 Chrysler 72 conv coupe right hand drive rear section of exhaust is missing does anybody have dimensions

[leomara]

31 LaSalle, you will have a harder task to resolve than I do.  Maybe someone like viv w could help because I believe his cars are all right hand drive.

[viv w]

Again pics were found on the internet of this factory built series 72 cut away for demo purposes. Note it is RHD, hope these pictures help both Leomara and 31lasalle. Hope the pics do not infringe any copyrights.