Garden Tractors - AC 416S exhaust question

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AC 416S exhaust question

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Garden Tractors
Forum Description: A great place to discuss the Simplicity and Allis Chalmers Garden Models
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=133716
Printed Date: 16 Jun 2024 at 1:11pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: AC 416S exhaust question

Posted By: gparrow
Subject: AC 416S exhaust question
Date 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