1963-1967 Corvette mufflers

[Jack J.]

Yesterday, I noticed BOTH of my new mufflers were dripping condensation from their inlet neck. This area is rearward from the welded on pipe and at the extreme tilted angle of the muffler. Seems I recollect a suggestion to drill a small hole into the muffler to allow the water to drain thus prolonging the life of the muffler. Good or bad idea? I realize that my car is not road worthy at this time to sufficiently heat up the entire exhaust system which would probably eliminate this condition? Any thoughts/suggestions? Thanks, Jack J.

[James W.]

Re: 1963-1967 Corvette mufflers

Jack,

Yes, a small 1/16" diameter hole drilled at the lowest point of the front end of the muffler's end cap will help to drain the water out and prolong the life of your mufflers. I use a drop or two of water on the muffler end cap flange to find the lowest point and then drill the hole at the low point of the muffler end cap. I've had the welded exhaust system on my '64 convertible since 2001 and they still look like new with no signs of rust through.

James

Yesterday, I noticed BOTH of my new mufflers were dripping condensation from their inlet neck. This area is rearward from the welded on pipe and at the extreme tilted angle of the muffler. Seems I recollect a suggestion to drill a small hole into the muffler to allow the water to drain thus prolonging the life of the muffler. Good or bad idea? I realize that my car is not road worthy at this time to sufficiently heat up the entire exhaust system which would probably eliminate this condition? Any thoughts/suggestions? Thanks, Jack J.

[Jack J.]

Re: 1963-1967 Corvette mufflers

James, thank you for your reply. That idea will get done today. Jack J.