bbc magnum intake manifold question
02-10-2012, 03:00 PM
#11
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Location: Grosse Pointe Farms, MI
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[QUOTE=stevesxm;3613370]
thats a fair enough assessment... but... what if youre wrong ? what if the corrosion that attacked the exterior also caused porosity elsewhere . my point simply is that you have a lot of money in this motor in all respects. for the last 200 bucks you can buy a new airgap or something and eliminate all the risk and have a better manifold probably.. i'm not trying to sell you on anything... just saying that if i'm standing there looking at an intake that i have to bondo up, then i have to say to myself " gee... what's the smart and conservative play here ?" for me its a new manifold. its a cost/ risk/ benefit deal...
I don't think it was corrosion that "attacked the manifold" but rather a poor casting right from the factory. As mentioned, it's pretty common. They cast around the brass insert, and as long as the brass insert was molded in well enough, they didn't really care if it was covered perfectly.
thats a fair enough assessment... but... what if youre wrong ? what if the corrosion that attacked the exterior also caused porosity elsewhere . my point simply is that you have a lot of money in this motor in all respects. for the last 200 bucks you can buy a new airgap or something and eliminate all the risk and have a better manifold probably.. i'm not trying to sell you on anything... just saying that if i'm standing there looking at an intake that i have to bondo up, then i have to say to myself " gee... what's the smart and conservative play here ?" for me its a new manifold. its a cost/ risk/ benefit deal...
02-11-2012, 07:21 AM
#12
Charter Member #927
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Yep, poor casting from the factory. The manifold functions just fine and all the imperfections are hidden by the factory paint and thermostat housing. No corrosion at all.
