Hendrik - The fundamental "tone" (frequency) of an engine's exhaust is exactly as you describe. And the frequency for different engines with the same number of cylinders running at the same RPM will be identical as you mention.
HOWEVER engine displacement, exhaust port design, exhaust manifold geometry, exhaust pipe diameter/length and other factors generate all sorts of harmonics of the fundamental frequency. This causes engines with the same number of cylinders and running at the same RPM to have entirely different "voices".
Example: A straight 6 with with a center outlet manifold (Dodge/Plymouth flathead 6) sounds very different from a Continental straight 6 with its manifold outlet between the #1 and #2 cylinders.
End outlet manifolds, split manifolds, etc similarly result in dramatically different exhaust notes from otherwise identical engines.
----
Incidentally as a kid I could distinguish just by sound IHC, Mack, White, Chevy/GMC, Dodge and Reo gas truck engines. Likewise Farmall, Allis-Chalmers, Minnie-Mo, Ford, etc. 4 cylinder tractors. Hearing these engines run at antique truck and tractor shows brings back fond childhood memories(!)
We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today. [ About Us ]
Today's Featured Article - Trenching With a Plow - by Staff. Introduction: This interesting information came from one of the discussion forums here at YT. We thought we should place it up front so it could be read by anyone interested in putting old iron to work. [Editor] I tried something new today, and it worked so well I thought I should post it - in case it might help someone else. I'm running 100 yards of 4" drain pipe from the gutter downspouts of our house to a pond down the hill. This should hel
... [Read Article]
Latest Ad:
1964 I-H 140 tractor with cultivators and sidedresser. Starts and runs good. Asking 2650. CALL RON AT 502-319-1952
[More Ads]
All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy
TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.
