AC 416S exhaust question

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   Hello, I recently bought an AC 416S and am concerned about the exhaust situation. It had a heavy cast big tractor style muffler on it when I bought it. I noticed that after running for a very short amount of time the barrel of the muffler gets glowing red hot. I've been around quite a few dirt bike and quads and know that its fairly common for the header to get hot like that but I've never seen a muffler glowing like that. My concern is that A. there is something wrong with the engine maybe running lean or something that's causing it or B. the muffler being mounted pretty much directly to the engine with only a 90 degree pipe its just to close to the engine. I believe stock the exhaust layout was down and across the front of the engine with the muffler mounted on the opposite side of the engine. Unfortunately that's not possible because the 90 degree pipe is rusted solid to the block and I don't want to risk hurting the threads in the block or doing any other damage. If anyone has any advice or suggestions I'd really appreciate it.

thanks! 
Greg

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gparrow Members Profile Send Private Message Find Members Posts Add to Buddy List Bronze Level Joined: 28 Nov 2016 Location: Minnesota Points: 5	Post Options Post Reply Quote gparrow Report Post Thanks(0) Quote Reply Topic: AC 416S exhaust question Posted: 13 Jan 2017 at 12:09am
	Hello, I recently bought an AC 416S and am concerned about the exhaust situation. It had a heavy cast big tractor style muffler on it when I bought it. I noticed that after running for a very short amount of time the barrel of the muffler gets glowing red hot. I've been around quite a few dirt bike and quads and know that its fairly common for the header to get hot like that but I've never seen a muffler glowing like that. My concern is that A. there is something wrong with the engine maybe running lean or something that's causing it or B. the muffler being mounted pretty much directly to the engine with only a 90 degree pipe its just to close to the engine. I believe stock the exhaust layout was down and across the front of the engine with the muffler mounted on the opposite side of the engine. Unfortunately that's not possible because the 90 degree pipe is rusted solid to the block and I don't want to risk hurting the threads in the block or doing any other damage. If anyone has any advice or suggestions I'd really appreciate it. thanks! Greg

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