Do we have any experts on the list that can add constructively to the
discussion of SS headers and exhaust systems? I'm a Physicist but I don't
have any expertise in the areas of metallurgical sciences, welding, or
exhaust system design. I am interested in obtaining a set of 4-2-1 SS
headers but based on the comments over the last few days I am not sure
whether I should go with SS or the less costly mild steel versions. What I
have gathered so far is:
1) SS headers probably look a lot nicer, won't rust or corrode, are
initially more expensive, but the welds may not hold up as well as on mild
steel(?).
2) Mild steel may not look as nice, will rust unless coated (additional
expense), are initially cheaper, and the welds may be more secure.
3) A flexible joint between the headers and exhaust system should be
considered.
In either case I may have to add provisions for an EGR valve between pipes 2
& 3 if the car does not pass emissions without one. Additionally I will may
have to insert a "universal" 12 inch catalytic converter between the headers
and the rest of the exhaust system.
TIA (Thanks in Advance)
Reid
'79 Spitfire (original owner)
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