Paul-

    Getting ready for the return of my engine, and I need to get  the welding
    on my exhaust reworked.  Based on prior discussions here on the  list, I
    know I must get the exhaust tubes rewelded to the inside of the
    mounting
    flange.  Before doing this, though, do I need to remove the  exterior
    welds, or are welds on both the inside & outside acceptable?

    Mark

    The heat damage is done already to the metal alloy. Can you
    shorten them about 3/8ths of an inch and just weld them on the
    inside?  Are they 321 SS and .065 thick?


I have no idea what the thickness or composition of the exhaust is --
perhaps Jerry could comment since he fabbed them for me.

As you can see in the pic, shortening the tubes is not in the cards -
the body of the exhaust VAM is already less than 1/4" from the  mounting
bolts.  Right now I have to install the nuts while the flange is only
partially mounted in order to get the nut to fit.  If I cut the tubes
down at all, it would be impossible to mount.

Also - I note in your 3D that you show the tube fully penetrating the
mounting flange.  I believe in my muffler that the tube is
surface-welded to the outside of the flange (no penetration at all)

Given all this, am I correct in assuming that the tubes must be wholly
replaced & the flange bored wider for new tubes?

Mark

OK then fabricate some braces up to the engine block.
I'll do a 3D shortly. That will reduces the stress on the joints.

Order a couple of these things from McMaster Carr.
We will use the old intake manifold bolt holes.
-- 
Paul Lamar ...No rotor no motor.

Mark, examine your exhaust.  I believe I welded it i all around on
the inside of the flange and tacked  it  on the outside.  This is the
way I have done them for years.  Jerry

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