AC HD4 and 650 Series Muffler
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Construction and other equipment
Forum Description: everything else with orange (or yellow) paint
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=201352
Printed Date: 23 Nov 2024 at 4:52am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: AC HD4 and 650 Series Muffler
Posted By: orangeman
Subject: AC HD4 and 650 Series Muffler
Date Posted: 15 May 2024 at 2:46pm
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OK - so work is continuing on the HD4 - am guessing but not for sure - that AC's Industrial Division went to Nelson for the mufflers for the OEM selection similar to the farm equipment side. When I purchased the machine the discharge from the exhaust was straight piped. When I asked about the muffler the previous owner said " it ran better that way". I am pretty sure that the running problem was more injector and injection pump timing rather than exhaust discharge through a muffler or straight pipe. Having said that, I am looking to purchase an OEM NOS or good used muffler that I could use as a template to build my own. The OEM P/N is 245446 and shows a center inlet with an offset right discharge. According to the AC Model H-4 and HD4 Revised Parts Information manual TP-104-S1 there were no revisions to the OEM muffler part number so it looks like it was the same for the P/N for both the gas and diesel units throughout the production period. Any guidance or sage advice regarding where I could secure a NOS or used muffler would be appreciated. Respectfully, ~ Orangeman
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Replies:
Posted By: DiyDave
Date Posted: 15 May 2024 at 3:35pm
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I would assume any 2200 4 cyl engine equipped equipment would share the same muffler... Unfortunately, HD-4, 500 FL and 615 LBH are the only ones with the same engine. 6060, 6080, F, F2, F3, K, K2 and 880 had turbos and intercoolers, so exhaust would be different...  ------------- Source: Babylon Bee. Sponsored by BRAWNDO, its got what you need! |
Posted By: orangeman
Date Posted: 15 May 2024 at 3:52pm
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Hi DiyDave: What's interesting is the muffler inlet and discharge set up is very similar to arrangement used on the 170/175 but the body is shorter and sits under the hood. Like these: https://www.allischalmers.com/forum/170-175-gas-nelson-mufflers_topic181876.html" rel="nofollow - https://www.allischalmers.com/forum/170-175-gas-nelson-mufflers_topic181876.html Appreciate the insights ~ Orangeman
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