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cstreit's Avatar
 
Join Date: Feb 2000
Location: Naperville, IL USA
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2.2L Head stud evaluation

So I'm rebuilding a 2.2L motor and most of the head studs look perfect. They are all steel. However a few studs have some "surface rust" on them. (in other words it doesn't appear to have compromised the stud, but you can feel it with your fingernail.

Is this a significant issue? I imagine most steel studs pick up some rust since they are exposed and I hate to replace parts "Just because" and become a swapper, but I have some concern about stress risers from visible rust.

Any opinions?
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Chris
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Old 02-09-2006, 03:53 PM
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If you clean them up you will find they are cut on some type of lathe, those tool cuts are worse stress risers than surface rust I would think. I just cleaned up my top 3.2 steels and painted them.
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Craig
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Twinplug, head work, case savers, rockers arms, etc.
Old 02-09-2006, 05:52 PM
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Yeah, I could definitely feel the 'machining marks' on them.. I think I'll take some slight more aggressive steel wool to them and see how deep the rabbit hole goes...
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Chris
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2008 Yamaha R6
2001 GT3 Cup - "Pepin"
1999 Spec Miata
1996 993 RS Replica
1971 Norton 750 Commando
Alcon Brake Kits
Old 02-09-2006, 06:23 PM
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Thats something I never liked, you take your finger nail down the stud and it feels like the surface of an old 45 record, you old enough to remember 45's?
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Craig
G2Performance
Twinplug, head work, case savers, rockers arms, etc.
Old 02-09-2006, 06:27 PM
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..and 75's I'm sorry to say...

I think I'm just going to replace them.. at $9 per it just ain't worth worrying about!
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Chris
----------------------------------------------
2008 Yamaha R6
2001 GT3 Cup - "Pepin"
1999 Spec Miata
1996 993 RS Replica
1971 Norton 750 Commando
Alcon Brake Kits
Old 02-09-2006, 08:55 PM
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