Topic: Re: R Puller
|Tractor Pulling Discussion Forum|
[Show Entire Topic] [Return to Forum]
[Show Entire Topic]
[Return to Forum]
[Add a Reply]
A switcharoo for a ZA angine is easy and cheap. You'd be jumping from a 165cu.in. 4" stroke to a 206cu.in. 5" stroke just by bolting it in. The power and size are limited using the sideways flathead engine, but a Z at least has a center main. By boring, porting, cam, and such on the stock appearing ZA engine, the 50-60hp range is possible. There is a stroker in my area that runs somewhere around 70hp. This style engine breathes rather poorly due to the many bends the air has to take to enter the combustion chamber.
The later 206ohv (or almost identical 220ohv) will bolt in with very little modification (coolant hoses). Check your club's rules. The 220 LP gas power unit was rated 66h.p. at 1900rpm. It would take quite the ZA engine to get close to that.
The weak point in a high horsepower R is the tranny. That could be remedied somewhat from what I've seen. I'd pull an R in 3000/3250/3500#. There was a local R that split its tranny in 4500# deadweight.
The largest small block MM to my knowledge is 4.44" X 6.5" 402 cubes in a ZT. In talking to the owner, 445 cubes would be the hairy maximum. A local 335 ran 347 cubes for years in a 335.
But just for low budget fun's sake, 206 ZA engines are a cheap power upgrade, fun and easy to tinker with, and have some neat tricks to making them run well. I have many of those parts laying around as well as a complete 206 engines of both ZA F-head and 445 ohv style. Good luck with your project.
|Same-Day Shipping! Most of our stocked parts ship the same day you order (M-F). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a Company you can trust and have generous return policies! Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ More Info ]|
| Copyright © 1997-2013 Yesterday's Tractor Co.|
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.
Yesterday's Tractors - Antique Tractor Headquarters
|About this site - Yesterday's Tractors is your one-stop source for antique tractors. If you are interested in older tractors you've come to the right place! Join more than 275,000 other classic tractor enthusiasts from all over the globe. We have many resources for antique tractor enthusiasts available including photos, classified ads, more than 24 tractor discussion forums, a show guide, values, specs and much more. Bookmark this site and come back often. Thanks for stopping by! Feel free to use our feedback form to send us your comments, suggestions and ideas.|