Heckeng Posted October 19, 2006 Share Posted October 19, 2006 Has anybody out there used any stainless headers on their cars? I'm wondering if they will be prone to galvanic corrosion where you connect the stainless pieces to the carbon, like at the block, or at the collector if you have carbon steel exhaust after the headers. Quote Link to comment Share on other sites More sharing options...
alex's72fgmc Posted November 8, 2006 Share Posted November 8, 2006 the gasket should prevent that at i would think Quote Link to comment Share on other sites More sharing options...
Heckeng Posted November 8, 2006 Author Share Posted November 8, 2006 The bolts are not isolated though, so you will still have the stainless to carbon interaction. I'm guessing nobody has the stainless headers on the forum yet. If I had some $$ to waste, I'd get a set, just because they wouldn't rust or peel paint! Quote Link to comment Share on other sites More sharing options...
alex's72fgmc Posted November 8, 2006 Share Posted November 8, 2006 why not cover the threaded ends of the bolts with locktite or an anti seize compound using stainless self locking type bolts from ARP. that should eliminate/reduce the problem of electrolisis occuring. Â just a thought but someone else can chime in on this Quote Link to comment Share on other sites More sharing options...
MeanMonte Posted November 11, 2006 Share Posted November 11, 2006 is it just me or is this way over thinking..... only time there should be much of a problem is if there is current flow across the parts. So unless your exhaust is your ground strap no worries. also consider that stainless is much less likely to erode than most other things. another thing to consider is that in some cases its hard to find a header for a newer car that isnt stainless. Quote Link to comment Share on other sites More sharing options...
Heckeng Posted November 12, 2006 Author Share Posted November 12, 2006 It probably is overthinking, but you will have potential for galvanic corrosion any time that two dissimilar metals are in contact with an electrolytic fluid, current is generated by the two different metals. Condensation in the exhaust would instigate corrosion, as well as if you had driven it outside and it was wet out. I suppose except for startup and when the car wasn't running, the exhaust would be ot enough that any water would evaporate which would make it a moot point. Quote Link to comment Share on other sites More sharing options...
502ci Posted November 12, 2006 Share Posted November 12, 2006 On my 97 vette it has factory stainless exhaust manifolds, (almost a header by design) anyways the heads are aluminum and the bolts and stainless manifolds look like the day they came off the assembly line 9 years ago... Quote Link to comment Share on other sites More sharing options...
Mike 57 Posted November 12, 2006 Share Posted November 12, 2006 Check out this site for interaction between metals in salt water./www.corrosion-doctors.org/Definitions/galvanic-series.htm I don't believe there should be much concern with interaction between different metals in an exhaust system. I would be more concerned with aluminium heads and a cast iron block with bad anitfreeze or no corrosion protrction at all. Quote Link to comment Share on other sites More sharing options...
Big Jim Posted November 12, 2006 Share Posted November 12, 2006 I just saw Trucks and they were talikng about using a new cast header tha looked a lot like the stock exhaust manifold but is supposed to perfomr better. Anybody seen or used them? Quote Link to comment Share on other sites More sharing options...
Big Jim Posted November 12, 2006 Share Posted November 12, 2006 Sanderson Cast Headers QP1200 $350.00 Ceramic coating $160.00 extra. Quote Link to comment Share on other sites More sharing options...
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