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240dkw

Well, that is not what I planned

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I have had a plan to swap out the non-original motor in my car with the original, correct motor at some point and decided it was time to do it. I have been very happy with how the motor has been running, just want the number correct motor in it. First little problem I found was a broken cam oiler tube. This is very common and as I had checked the valve settings this spring and saw no problem then it is a fairly new problem. I have another oiler to replace it. 

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The next problem was a bit disappointing. It seems I have developed a crack in my E30 non-emission exhaust manifold. The second photo shows the pattern of the exhaust on the back side of the heat shield. Now to decide if I try to weld it myself or pay someone to do it. 

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Cast iron is notoriously hard to weld. Doable but it takes the correct approach and the right welding rods or wire

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Shot peen it is another approach.. google it..  they do this also with cracked cast iron motorblocks..  an old english? way to repair things?

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 Been there, done that. I drilled a hole in the ends of the crack, ground a vee in the crack, preheated with a butane torch, welded the crack with nickel rod (I've also used rod for stainless steel) and buried it in dry sand to let it cool slowly.

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Mark: that is how most of the youtube's show it being done. Now to see if I have the wherewithal to give it a try.

Edited by 240dkw
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I'd leave it.  It looks small.  It might even be sealing itself once the manifold gets hot.  

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