I have a pretty good amount of rust inside my intake manifold that I have off the motor. Is there a good way to remove it? I bought CLR but want to know how to make the best use of it.

Brad
Sierra Vista Arizona
1954 Lincoln Capri

If you do use acid, don't use it on aluminum, and definitely neutralize it asap.  If you leave iron in the acid, it will eat it away over time, and aluminum will turn into mush after a couple of days.  It is a common method to use Muriatic acid to acid port iron heads and intake manifolds by brushing the acid into the ports, let it form rust scales, sand blast, repeat the acid, and sand blast, etc.  Some folks get really aggressive and pour the ports full of acid and let them set for a week, and many have ruined the heads and manifolds that way.  I am not a fan of using acid except as a last resort.  Joe-JDC

JDC

Whatever you choose to do, make damn sure your manifold is 120% clean before you bolt it on.  If you sand blast it and any of the sand remains in the intake, it will wipe out your rings and cylinder walls in a NY minute.