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rotorwrench · 08-01-2020, 10:49 AM

Stuck valves have been known to break cams and cam followers if enough pressure is applied. I got a truck motor once where a farmer had been dragging the truck with a tractor to break it free. It broke alright but it didn't break free. I had a hell of a time getting that one apart. Busted cam and a follower with a valve stem sticking in it plus all the usual crusty pistons and other bad parts finally came out but not without a fight.

A good penetrant like the double A variety (Acetone and ATF 1:1 mix) will work wonders over time. Pouring on some of the modern rust removal products like Evaporust won't hurt on the real crusty stuff if your set up to soak it.

08-01-2020, 10:49 AM	#31
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,431	Re: A few questions on a 8BA Stuck valves have been known to break cams and cam followers if enough pressure is applied. I got a truck motor once where a farmer had been dragging the truck with a tractor to break it free. It broke alright but it didn't break free. I had a hell of a time getting that one apart. Busted cam and a follower with a valve stem sticking in it plus all the usual crusty pistons and other bad parts finally came out but not without a fight. A good penetrant like the double A variety (Acetone and ATF 1:1 mix) will work wonders over time. Pouring on some of the modern rust removal products like Evaporust won't hurt on the real crusty stuff if your set up to soak it. Last edited by rotorwrench; 08-01-2020 at 10:56 AM.