BLUF: I need help identifying the band clamp used on my exhaust, and also finding a solution for interference between the end of one exhaust pipe and my engine mount.
I previously had an issue with one of my exhaust pipes contacting the the lower engine mount crossbar inside the gear leg. I caught it after it had worn a slight divot into the mount (although the exhaust pipe didn’t show any signs of chafing). To adjust I shimmed the engine to rotate the exhaust away from the mount and made sure all the hangers were secure.
The other day I discovered this pipe was loose and able to touch the mount again. On decowling I discovered the clamp around the pipe which connects to the hangers had broken. This leads to my questions.
First, I’m having trouble identifying the clamp to find a replacement. Perusing the ACS catalog and the aviation isle of the hardware store hasn’t yielded any equivalents. The picture shows this clamp, basically just a band clamp with a perpendicular tab for a screw. The clamp broke at one of the tabs.
Second, moving the pipe back into place where the existing hangers place it once again looks as if it may not have enough clearance with the engine mount. I’m not sure if my hangers are vans but they are solid tubes, one running between the two pipes and then a third that connects up to the accessory case. This is a pre-Vetterman crossover exhaust, for reference. My first impulse would be to shim the band that connects the pipe to the hangers to move the pipe down away from the mount, but I’m concerned about the longevity of such a solution, as moving it a sufficient distance is putting a load on the pipe. I’ve seen some people that may fastened the pipe to the mount with a hanger system, should I consider this or am I better off just shimming the pipe out of the way? My engine mounts have less than 100 hours on them and don’t appear to be sagging, and I don’t have room to shim the one corner again to further rotate the plane of the engine and exhaust away from the mount.
I previously had an issue with one of my exhaust pipes contacting the the lower engine mount crossbar inside the gear leg. I caught it after it had worn a slight divot into the mount (although the exhaust pipe didn’t show any signs of chafing). To adjust I shimmed the engine to rotate the exhaust away from the mount and made sure all the hangers were secure.
The other day I discovered this pipe was loose and able to touch the mount again. On decowling I discovered the clamp around the pipe which connects to the hangers had broken. This leads to my questions.
First, I’m having trouble identifying the clamp to find a replacement. Perusing the ACS catalog and the aviation isle of the hardware store hasn’t yielded any equivalents. The picture shows this clamp, basically just a band clamp with a perpendicular tab for a screw. The clamp broke at one of the tabs.
Second, moving the pipe back into place where the existing hangers place it once again looks as if it may not have enough clearance with the engine mount. I’m not sure if my hangers are vans but they are solid tubes, one running between the two pipes and then a third that connects up to the accessory case. This is a pre-Vetterman crossover exhaust, for reference. My first impulse would be to shim the band that connects the pipe to the hangers to move the pipe down away from the mount, but I’m concerned about the longevity of such a solution, as moving it a sufficient distance is putting a load on the pipe. I’ve seen some people that may fastened the pipe to the mount with a hanger system, should I consider this or am I better off just shimming the pipe out of the way? My engine mounts have less than 100 hours on them and don’t appear to be sagging, and I don’t have room to shim the one corner again to further rotate the plane of the engine and exhaust away from the mount.
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