15 years ago
It has a muffler that was hit from the top sideways (when the engine
was being moved on a forklift, I suppose).
Anyway, the muffler attaches to exhaust manifold by means of a diamond
shaped flange and two bolts on the far ends of that diamond. (I can
make and post pictures on my webpage).
The impact made that flange non-flat, like a "saddle". The thickness
of the flange is about 1/4". The deflection is about 3/32"
I would like to straighten the flange somewhat. I do not have a forge
but I have a piece of rail, some assorted 4140 blocks and sledgehammer
(3 and 8 lbs, IIRC). I also have a decent TIG welder.
I see two choices:
1) try to straighten the flange by putting it on the rail or flat 4140
block and pounding. (cold)
2) Try to weld a little filler to some areas and then grind the
surface to be reasonably flat (should be fine with a gasket).
The muffler's body was also bent a little bit (where the pmuffler's
pipe enters its cylindrical main body) but I already fixed that
sufficiently to provide clearance for the oil fill cap.
So... any flange straightening suggestions will be gratefully
received. I can provide pictures, as I said.