Re: '54 Super A Engine

Posted by Big Orn on June 03, 2003 at 08:12:12 from (63.169.152.131):

In Reply to: '54 Super A Engine posted by Jeff on June 03, 2003 at 07:12:49:

Welding is a great way to fix a superficial crack - one that does not run into other internal parts. If it is just a crack that was caused by excessive pressure, then it can be welded (Nickel Rods, etc.) I wouldn't trust Brass brazing, which is used for sealing only. Remember to preheat a little, then weld, then peen (using a rounded hammer - very small ball peen or chipping hammer with a spherical radius) then heat again - weld - peen - so forth until complete. I have done this many times on both light and heavy cracks - it works, but must follow procedure.
(1) Clean area (2)Drill hole at end of crack or both ends if crack doesn't start at a hole (3) grind a groove almost all the way through (4) preheat (get heat stick from welding supply for cast iron) (5) weld one pass (6) peen (7) start back at #4 until complete.

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