Farm Equipment - Why does this 185 sound like a Cummins?

Print Page | Close Window

Why does this 185 sound like a Cummins?

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=143107
Printed Date: 01 Apr 2026 at 2:55am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Why does this 185 sound like a Cummins?

Posted By: CaseyCreek
Subject: Why does this 185 sound like a Cummins?
Date Posted: 03 Oct 2017 at 8:03pm

I was tinkering around the other day on YouTube and noticed this video about a 185:

http://www.youtube.com/watch?v=Rb9Wc-OSlP8" rel="nofollow - http://www.youtube.com/watch?v=Rb9Wc-OSlP8
and
http://www.youtube.com/watch?v=sMYbQqylqXU" rel="nofollow - http://www.youtube.com/watch?v=sMYbQqylqXU

Does the injector pump really have that much control over the sound of the tractor? Here is (I believe) the same tractor before the rebuild:

http://www.youtube.com/watch?v=0-US7NQagmE" rel="nofollow - http://www.youtube.com/watch?v=0-US7NQagmE

I have had three 185s and none of them sounded like the one in the first video. It is obviously running very well, but I am curious. I always thought the Cummins sound was due to the overall design of the engine.

I know that the main thing is to get'em running and keep'em running. Sometimes, I just want to know why things work the way they do. I am probably not alone in that on this board. Any knowledge you care to pass along on this issue is appreciated.

-------------
D17 Series III,D17 Series IV, 185

Replies:

Posted By: bradley6874
Date Posted: 03 Oct 2017 at 9:11pm

Thats like comparing a mustang with fullfactory exaust to open headers not even close

-------------
You can wash the dirt off the body but you can’t wash the farmer out of the heart and soul

Posted By: Joe(TX)
Date Posted: 03 Oct 2017 at 9:26pm

Like Bradley said. no muffler. Also increase engine speed and fuel will change the frequency.

Any 6 cylinder under like conditions will sound the same.

-------------
1970 190XT, 1973 200, 1962 D-19 Diesel, 1979 7010, 1957 WD45, 1950 WD, 1961 D17, Speed Patrol, D14, All crop 66 big bin, 180 diesel, 1970 170 diesel, FP80 forklift. Gleaner A

Posted By: DougS
Date Posted: 04 Oct 2017 at 7:26am

Perhaps Cummins should patent the sound of their engines. Harley Davidson tried to with theirs. :)

Posted By: injpumpEd
Date Posted: 04 Oct 2017 at 7:38am

Straight pipe versus muffler, is one thing, and the rebuilt pump was probably modified some for pulling. That can change the sound of them.

-------------
210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!