got my 88 coupe back...but the cats glow red hot??

[FORD TOUGH]

If the cats are not clogged gutting them or putting a off road pipe is not really going to fix the problem because whatever is causing them to glow still needs to be fixed.

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[HACKGT350]

Originally Posted by FORD TOUGH

A customer had a mid 80's ford truck and the cat on it was getting like 1100-1200 degrees (you could not lay your hand on the floor board) that whole thing was glowing orange but the manifold on it was not.

because of the chemical reaction going on inside the cat they normally see temperatures above that already but only inside the cat.

[cammedlx]

If the cat was 100% restricted it would cause noticible running problems..But the honey comb inside can become disloged and cause enough restriction to have it overheat and become cherry red.If it was a vaccum leak or timing issue the headers would glow red before the cats.Also if it was dumping excess fuel into the pipes the mofo would backfire like chitty chitty bang bang once the cats got that hot because there would be no way for that much fuel to enter the pipes without igniting and causing backfires..I would take a rubber mallet and "tap" on the cats and listen for noise..If it sounds like some rocks in a can the honeycomb has come lose.

[projectresto83]

Like I said before, remove and problem solved