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#1 Welding 3.8 block?
Posted: Wed Apr 24, 2019 8:13 pm
by ysmalkie
I seem to have a problem with one of the water passages in the block:
Does anyone know how weldable is the iron on these blocks?
Or are there other modern methods that are better?
Tadek
#2 Re: Welding 3.8 block?
Posted: Thu Apr 25, 2019 12:22 am
by abowie
Common problem. My machinist grinds them out, brazes them and them cuts them back to shape.

#3 Re: Welding 3.8 block?
Posted: Thu Apr 25, 2019 6:50 am
by ysmalkie
Thanks - is there a chance you can find out what does he use for brazing??..
Tadek
#4 Re: Welding 3.8 block?
Posted: Thu Apr 25, 2019 2:15 pm
by abowie
Nickel bronze rod.
#5 Re: Welding 3.8 block?
Posted: Thu Apr 25, 2019 4:31 pm
by ysmalkie
Many thanks - I understand te block has to be preheated?
Tadek
#6 Re: Welding 3.8 block?
Posted: Thu Apr 25, 2019 11:19 pm
by abowie
I don't know much about the process I'm sorry. I just pay them to do it.
#7 Re: Welding 3.8 block?
Posted: Fri Apr 26, 2019 6:41 am
by cactusman
The blocks are cast. Cast iron can crack. It would be heated I'd imagine or the local heating caused by the brazing may cause a crack to form. A job for an expert who knows what they are doing or you stand a good chance of wrecking the block all together. Not something do do in your garage!
#8 Re: Welding 3.8 block?
Posted: Fri Apr 26, 2019 10:33 am
by ysmalkie
you are right.. I have to find the right guy :-).
Tadek
#9 Re: Welding 3.8 block?
Posted: Fri Apr 26, 2019 9:10 pm
by Series1 Stu
Give Stitchweld in Burton on Trent a call. They can repair just about any kind of damage on a large range of parts and materials.
Brian there is a magician with metal. He repaired my sump and he did appear on Car SOS where he repaired an engine block for Fuzz.
Regards