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Corvette
C4 Forum
1988 Convertible for sunny day drives
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<blockquote data-quote="Tourmax" data-source="post: 176352" data-attributes="member: 5304"><p>Well, thats just total shite:</p><p></p><p>[ATTACH=full]31461[/ATTACH]</p><p></p><p>Porosity and low penetration everywhere.</p><p></p><p>Tried sandblasting, flap wheels, cleaners, preheating and even several wipe downs with lacquer thinner and acetone. No dice. That cast just will not take a good weld. I can see where the contaminants are trying to “bubble up” through the weld puddle and just ruining everything. It’s so bad, I can’t even get a puddle to form properly to run a decent bead.</p><p></p><p>Only thing I can think of is to drop it in the oven at around 300-400F for a couple hours and try to boil the contaminants out of the porous aluminum casting so I will have at least a fighting chance of getting it to will weld properly.</p><p></p><p>Jeez, what a mess. At this rate, I might be chucking the whole LT1 intake in the trash (well, actually, I’ll prob end up just smelting it down to ingots).</p><p></p><p>I just might end up sticking with the oem TPI or maybe trying to find a used mini ram or similar.</p><p></p><p>Waste of time, gas and effort so far. Time to walk away for today and see what tomorrow brings after a good nights sleep....</p></blockquote><p></p>
[QUOTE="Tourmax, post: 176352, member: 5304"] Well, thats just total shite: [ATTACH type="full" alt="8C758432-E3DF-4956-8095-870804049120.jpeg"]31461[/ATTACH] Porosity and low penetration everywhere. Tried sandblasting, flap wheels, cleaners, preheating and even several wipe downs with lacquer thinner and acetone. No dice. That cast just will not take a good weld. I can see where the contaminants are trying to “bubble up” through the weld puddle and just ruining everything. It’s so bad, I can’t even get a puddle to form properly to run a decent bead. Only thing I can think of is to drop it in the oven at around 300-400F for a couple hours and try to boil the contaminants out of the porous aluminum casting so I will have at least a fighting chance of getting it to will weld properly. Jeez, what a mess. At this rate, I might be chucking the whole LT1 intake in the trash (well, actually, I’ll prob end up just smelting it down to ingots). I just might end up sticking with the oem TPI or maybe trying to find a used mini ram or similar. Waste of time, gas and effort so far. Time to walk away for today and see what tomorrow brings after a good nights sleep.... [/QUOTE]
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Corvette
C4 Forum
1988 Convertible for sunny day drives
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