From:
bobc997615_REMOVE_181321_THIS_@yahoo.com
--- In <a href="/group/cosworthvegas/post?protectID=219233066105193209050199029077192253163098100009128121188190230091025019053061151110147">cosworthvegas@yahoogroups.com</a>, tobsb2002 <<a href="/group/cosworthvegas/post?protectID=091233212180056219138097203245129208071">no_reply@y...</a>> wrote:
> Hello everyone;
> With all the talk about block corrosion from lack of cooling
system
> maintenence, my question is; is there a way to fix it if it's not
too
> extensive? Can you heli-arc some material onto the cylinder when
> rebuilding?
> Thaks - Terry
I wouldn't put much effort into trying to weld the block especially
at the bore deck face. It can be done but the block being a die
casting, there is entrapped air/porosity the aluminum that would make
welding sometimes difficult to say the least. There may be oxides in
the micro pores that would cause some problems with metal flow
or "blow-outs" as welder call it. In the early '80s, we produced the
Oldsmobile diesel intake manifold that was a three piece welded
affair and heli-arcing these die cast pieces together was a small
nightmare with inconsistent welds (and that was with 380 alloy, not
high silicon 390 alloy).
bob chin
2172, 2987
[This is message #10168 by user bobc997615 on Yahoo! Group Cosworth Vegas:
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