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#1 |
Registered User
Join Date: May 2013
Location: California
Posts: 65
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Phosphoric acid bad for cast iron exhaust manifolds?
Looking to refinish my ram horns, have read conflicting information about using Phosphoric acid on cast iron exhaust manifolds. Just looking to prep the surface for a simple high-temp rattle can refinish. Would a simple engine degreaser suffice?
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