The other day when i had my friend in the car my car started rattling like was rubbing against something, i checked it out and determined that the Exhaust clamp had rusted and been knocked off and the exhaust is rubbing against the body. Im getting a new hanger and clamp but what size is the exhaust for my 91 blazer? 2 inch or 2 1/4 inch? It looks like its 2 inches but i wanted to be sure.

 

I'm not entirely sure, but I belive 21/4. But to be sure find a ruler or tape measure and measure fromoutside the pipe to the otherside of the pipe. this should be the best way of checking.