[Healeys] Fwd: Down pipes

[Larry Wendland]

Perry, After all that my head hurts. LOL  I agree the flex pipes were to aid in fitment of the forward portion of the exhaust system when new and it takes a set after a period of use and no longer flexible. 


-----Original Message-----
From: Perry via Healeys <healeys at autox.team.net>
To: healeys <healeys at autox.team.net>
Sent: Fri, Oct 18, 2019 9:21 am
Subject: Re: [Healeys] Fwd: Down pipes



Bill brings up something that I have thought about occasionally over the last 50 years, why is there a section of flex pipe used in the original production of Austin Healey’s?  I mention production because I’m not sure what was on the first prototype cars. Todays stainless or mesh type flex pipe does actually move even after the pipe has “aged” a bit. Not so much for the older mild steel versions. Once they take a set (rust) there is not much movement, but usually breakage. 
My take on the flex pipe on Austin Healey is that it makes it a lot easier to fit the pieces together on the car. Exhaust manifold outlet(s) are fixed points. Same with the inlet(s} to the muffler. To get a perfectly parallel set of down pipes outlets into the muffler and still fit the exhaust manifold would be hard without the flex pipe sections. Note that the factory welded the two tail pipes together on the later 100-Six/early 3000. 
OK I’m going back to sleep.  Perhaps I’ll dream about why the oil drips out of my gearbox/OD even with fresh “O” rings….
Perry
  
Sent from Mail for Windows 10
  

From: WILLIAM B LAWRENCE
Sent: Friday, October 18, 2019 12:50 AM
To: i erbs; Bob Spidell
Cc: Ahealey help
Subject: Re: [Healeys] Fwd: Down pipes


  
The rubber mounts shouldn't cause a problem, but the flexible sections of the down pipes may have become too stiff to flex, in which case the relative motion of the engine to the chassis may be transmitted to the down pipe flanges.

  

  







  


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