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Engine gurus

Printed From: Unofficial Allis
Category: Other Topics
Forum Name: Pulling Forum
Forum Description: Forum dedicated to Tractor and Garden Pulling
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=109883
Printed Date: 25 Nov 2024 at 5:55am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com


Topic: Engine gurus
Posted By: dgerth
Subject: Engine gurus
Date Posted: 03 Aug 2015 at 9:37pm
Gentlemen,
I have a D17 block, 5.6 stroked crank, 4.6 pistons @12.1x1 cr and will have new rods built. My ? is, would anything be gained, other than fattening my machinists pocket, by having larger valves installed? RpM's will be well under 3k. This will be in a WD puller @ 373cid.
tks


Replies:
Posted By: Bill_MN
Date Posted: 04 Aug 2015 at 5:23pm
Yes but the benefits will be limited by the very poor-flowing head and manifold. Best do some porting and bowl blending as well, if not already done.


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1951 WD #78283, 1918 Case 28x50 Thresher #76738, Case Centennial B 2x16 Plow

Posted By: mgburchard
Date Posted: 09 Aug 2015 at 9:00pm
Check out the Gregg's antique puller magazine it has the cylinder head Pankwy done that's running larger cubic inches at 5 grand on tach


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