dumbest ever reason for head gasket replacement - PeachParts Mercedes-Benz Forum

Meles · #1 05-30-2013, 04:46 PM

Quote:

Originally Posted by Simpler=Better

Normal JB weld takes 24-28 hours to set and its great so long as the surfaces are clean of grease/oil and the surfaces are rough enough for the JB to 'grab'.

If you're worried about overheating the head when welding, then just zap 3/8" at a time and let it cool between zaps.

Just spoke to machine shop. They won't work on a car directly, but the guy sounded confident that it could be welded. Stated melting point of tool is probably lower than the prechamber. Would take an experienced welder. He did not have fear of the aluminum head because it conducts heat so well. I am going to call around on this some. Wish I could get someone over with a portable welder. Don't know if such a device would have the heat to weld into prechamber metal.

Meles · #2 05-30-2013, 05:19 PM

Quote:

Originally Posted by Meles

Just spoke to machine shop. They won't work on a car directly, but the guy sounded confident that it could be welded. Stated melting point of tool is probably lower than the prechamber. Would take an experienced welder. He did not have fear of the aluminum head because it conducts heat so well. I am going to call around on this some. Wish I could get someone over with a portable welder. Don't know if such a device would have the heat to weld into prechamber metal.

Nimonic 80a is the steel in the prechamber. Has melting point almost 2500 Farenheit. That's pretty different from regular steel and double aluminum melting point.... No go?