Welcome! Please use the navigational links to explore our website.
PartsASAP LogoCompany Logo (800) 853-2651

Shop Now

   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver

Attention Forum Users: On the 28th of December 2023 at 9:00am Central Time, we will be taking the forums down for maintenance while we prepare the new forums for your use. Please click here for more information.

JD Model 70
:

Welcome Guest, Log in or Register
Author 
Cindy

04-07-2003 11:14:27




Report to Moderator

My Dad needs to know what planing the head .125 on his Model 70 would do. How much hp would he gain and what fuel would he use? Any other ideas to help gain an edge for pulling?

thanks,
Cindy




[Log in to Reply]   [No Email]
Mike Aylward

04-07-2003 16:09:51




Report to Moderator
 Re: JD Model 70 - in reply to Cindy, 04-07-2003 11:14:27  
Cindy, I pull a 60 and am building a 70 puller. I can give you some things to do on your tractor that will help. Email me for more information. Mike



[Log in to Reply]  [No Email]
Jack

04-07-2003 12:45:07




Report to Moderator
 Re: JD Model 70 - in reply to Cindy, 04-07-2003 11:14:27  
Hey Cindi,a good machine man may could take as much as .250 thousanths off w/o hurting anything.It will gain anywhere from 10 to 20 psi per cylinder.Probably lookin at 4-5 hp difference if the valves are in good shape.Good luck,Jack(TN).



[Log in to Reply]  [No Email]
G Taylor

04-08-2003 06:41:22




Report to Moderator
 Re: Re: JD Model 70 - in reply to Jack, 04-07-2003 12:45:07  
If the head if off, porting and polishing the valve bowl/seat area,oversize valves and port matching the head to intake and intake to carb. Will gain as much or more power as the compression increase. The LP intake/exhaust manifold system and a conversion from oilbath to dry air filtration should be worth a few HP too. What weight class, tire size and gear is your father pulling with? We are assuming this is a gasoline 70?

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:


TRACTOR PARTS TRACTOR MANUALS
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 ]

Home  |  Forums


Copyright © 1997-2023 Yesterday's Tractor Co.

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.

Yesterday's Tractors - Antique Tractor Headquarters

Website Accessibility Policy