OldSlowReliable Posted December 12, 2009 Share Posted December 12, 2009 Factory exhaust manifolds. What material are they made of... Link to comment Share on other sites More sharing options...
nunya Posted December 12, 2009 Share Posted December 12, 2009 Metal? Ain't they cast IIRC? I'm proably wrong though... Link to comment Share on other sites More sharing options...
TerranoNZ Posted December 12, 2009 Share Posted December 12, 2009 IIRC cast Iron like most exhaust manifolds. Curiosity or something specific makes you ask? Link to comment Share on other sites More sharing options...
GrimGreg Posted December 12, 2009 Share Posted December 12, 2009 If it is cracked and you want to weld it, good luck. Link to comment Share on other sites More sharing options...
OldSlowReliable Posted December 12, 2009 Author Share Posted December 12, 2009 If it is cracked and you want to weld it, good luck. BINGO I wasn't sure if it was cast iron or not (i was praying not) and now that It is for sure.......if it ends up being cracked, I'll be buying a new one :S Thanks guys Link to comment Share on other sites More sharing options...
GrimGreg Posted December 12, 2009 Share Posted December 12, 2009 Not saying you can't weld it, but to do it and not either melt the casting away or cause it to crack during cooling is the hard part. Usually to weld to cast you have to both pre and post heat it. Link to comment Share on other sites More sharing options...
OldSlowReliable Posted December 13, 2009 Author Share Posted December 13, 2009 Not saying you can't weld it, but to do it and not either melt the casting away or cause it to crack during cooling is the hard part. Usually to weld to cast you have to both pre and post heat it. Yeah, or keep it cool the entire time....I figure if it is cracked, I'll get a good one from a partout or something....if they were steel I was thinking about welding em... Link to comment Share on other sites More sharing options...
Precise1 Posted December 13, 2009 Share Posted December 13, 2009 The ones in my garage sure look like cast iron. If it is cracked and you want to weld it, good luck. Not saying you can't weld it, but to do it and not either melt the casting away or cause it to crack during cooling is the hard part. Usually to weld to cast you have to both pre and post heat it. Exactly. I've seen it done, but it's hit and miss. Need a set? I have 2... B Link to comment Share on other sites More sharing options...
OldSlowReliable Posted December 24, 2009 Author Share Posted December 24, 2009 The ones in my garage sure look like cast iron. Exactly. I've seen it done, but it's hit and miss. Need a set? I have 2... B I'm taking it to a family friend's shop over break for some quotes to be drawn up, so I guess i'll see Link to comment Share on other sites More sharing options...
Toby Posted December 25, 2009 Share Posted December 25, 2009 kryptonite Link to comment Share on other sites More sharing options...
adamzan Posted December 25, 2009 Share Posted December 25, 2009 I have a set as well. Link to comment Share on other sites More sharing options...
GrimGreg Posted December 28, 2009 Share Posted December 28, 2009 I have a set as well. Just toss em across the pond to him. Link to comment Share on other sites More sharing options...
StatutoryApe Posted December 29, 2009 Share Posted December 29, 2009 Yeah, or keep it cool the entire time.... is that possible? just curious. Link to comment Share on other sites More sharing options...
Cyril Posted December 31, 2009 Share Posted December 31, 2009 You could braise it after worming the it up first . Link to comment Share on other sites More sharing options...
OldSlowReliable Posted December 31, 2009 Author Share Posted December 31, 2009 (edited) is that possible? just curious. relatively cool....if you do small increments at a time, yeah it is, but usually its a combo of both, preheating the metal to a reasonable temp, and then not welding in 5 inch passes... You could braise it after worming the it up first . I have no idea how to braize metal...much less the tools to do so... Edited December 31, 2009 by OldSlowReliable Link to comment Share on other sites More sharing options...
GrimGreg Posted December 31, 2009 Share Posted December 31, 2009 I have no idea how to braize metal...much less the tools to do so... It is basically like soldering, you brush a flux material on then heat it and add filler metal. You can buy braizing materials at most hardware stores and all you need usually is a propane torch (some fillers work better with hotter gasses). For an exhaust though, I would fear that it would just melt out the filler once it got to operating temps . Link to comment Share on other sites More sharing options...
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