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#1
10-25-2008, 06:26 PM
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cylinder head repair, jb weld?
After water locked the no6 cylinder last week, I removed the head to replace the gasket (replaced 4 years ago too!) but discovered that the no6 chamber was corroded and venting to the coolant passages!
I have several options, 1 strip the head, get it welded, machined and re-install (most work) 2 buy another head (most expensive) 3 drill out the corrosion pocket, tap and thread in an aluminium bolt, file flush. seal with j-b weld (close to valve seat!!) 4 prepare, clean and fill with j-b weld. (cheap and fast) I'm interested if any of you guys have used jb weld for such repairs? M103 engine. 1991 300ce. A picture of the chamber is now on my gallery Last edited by Gerard; 10-25-2008 at 06:42 PM. Reason: to tell you about a picture 
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#2
10-25-2008, 07:05 PM
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I Vote For:
#1 (will require an Expert machine tool operator,who is also an Artisan Welder)
OR #2 The other mentioned options probably will not last through one "Warm Up".
__________________
'84 300SD sold 124.128 Last edited by compress ignite; 10-25-2008 at 08:03 PM.
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#4
10-25-2008, 08:03 PM
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Please take a pic of the head so I can see what it looks like. I have some experience in this area.
http://www.peachparts.com/shopforum/showthread.php?t=201507
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952. Last edited by wbain5280; 10-25-2008 at 08:08 PM. Reason: add link
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#5
10-25-2008, 08:31 PM
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pic already up
I already posted a pic in my gallery, maybe you guys cant see the link though. will try to post it in the thread.
G OK heres the same pic below, Might upload some more tomorrow. Better go to bed, its later here! Last edited by Gerard; 10-25-2008 at 08:47 PM. Reason: attach pic
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#6
10-25-2008, 08:51 PM
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It looks like pretty extensive damage. A few pics of the damaged area from other angles would also help. From the one pic, the damage looks extensive and would require a replacement head.
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Regards Warren Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL ENTER > = (HP RPN) Not part of the in-crowd since 1952.
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#7
12-07-2008, 06:10 AM
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Just FYI, I had an aluminum head repaired at a machine shop a while back.
It involved them hot tank cleaning it, sticking it in an oven to preheat it before the welding, welding it, cooling it back down in the oven, and then various machine work (grinding down the weld, as well as milling the cam and head headgasket surfaces straight and smooth). As it was a car that I couldn't easily get a replacement head for, I jumped on that method, and it ended up setting me back ~$200, if I remember correctly. It's good to hear that you got your toy back on the road with a replacement though, as finding a shop that can do the work with any skill, or even attempt it in the first place can take some doing!
__________________
-Josh Testing the cheap Mercedes axiom, one bolt at a time...
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#8
12-08-2008, 08:58 AM
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Quote:
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