Just purchased an N11, 2 1/2 inch aluminum treated exhaust system from Corvette Central for my 64 convert (L76 & 4 speed). Need advice on a few issues - have searched old threads, nothing current and old opinions vary.
Package from CC came with fiber (non metallic) donuts and extensions. The system I removed from my car was an after market repro - manufacturer or origin unknown - installed by a previous owner. Donuts on the car that I removed were metal (magnetic) and in good condition - there were no extension tubes.
Should I use the CC provided fiber donuts with extensions or, metal donuts without extensions, or metal donuts with extensions?
Flange question. Flanges removed from car are in good condition - surface rust only, easily cleaned up. There are no markings or part #s on the flanges. Previous owner used original parts when ever possible - these could be original. These flanges are 1/4 inch thick. Flanges supplied by CC are identical in shape to those I removed from car except they are 11/32 inches thick. Two pics are included - old used flange on bottom - new CC flange on top. Which, if either are "correct". If neither are correct - can you recommend a source for correct flanges.
Last question - nuts to secure exhaust pipe to manifold. Old discussions (6 years or more) in this forum state that no vendor carries "correct" nuts. What is the current thinking on this? Do any vendors carry a good repro nut? Paragon has a set and they say these are a "must" if the car is going to be judged. Recommendations please.
Thanks for your recommendations.
Package from CC came with fiber (non metallic) donuts and extensions. The system I removed from my car was an after market repro - manufacturer or origin unknown - installed by a previous owner. Donuts on the car that I removed were metal (magnetic) and in good condition - there were no extension tubes.
Should I use the CC provided fiber donuts with extensions or, metal donuts without extensions, or metal donuts with extensions?
Flange question. Flanges removed from car are in good condition - surface rust only, easily cleaned up. There are no markings or part #s on the flanges. Previous owner used original parts when ever possible - these could be original. These flanges are 1/4 inch thick. Flanges supplied by CC are identical in shape to those I removed from car except they are 11/32 inches thick. Two pics are included - old used flange on bottom - new CC flange on top. Which, if either are "correct". If neither are correct - can you recommend a source for correct flanges.
Last question - nuts to secure exhaust pipe to manifold. Old discussions (6 years or more) in this forum state that no vendor carries "correct" nuts. What is the current thinking on this? Do any vendors carry a good repro nut? Paragon has a set and they say these are a "must" if the car is going to be judged. Recommendations please.
Thanks for your recommendations.
Comment