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

Shop Now

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

Tractor Pulling Discussion Forum

H pistons

Welcome Guest, Log in or Register
Author  [Modern View]

12-18-2009 12:17:08

Report to Moderator

can anyone tell me the dimensions of a H piston. Pin dia., overall height, and compression height. Thank you

[Log in to Reply]   [No Email]

12-19-2009 09:25:53

Report to Moderator
 Re: H pistons in reply to 41106, 12-18-2009 12:17:08  
All H models were a 3.375 stock bore, with a 1.109 pin, and a compression height of 2.5 inches.

Overbore was opened up to 3.4375 by using a thinner sleeve set. I belive the block bore with no sleeves is 3.55.

Super H had a 3.4375 bore stock, the OD of the Super H sleeve was now 3.755, but still retained the small counterbore flange spec.

Overbore for the Super H was 3.5 for early Super H,,,,

but, after a certain serial number, they used the same sleeve as the 300's C-169ci option to go to 3.5625 bore.

I would imagine to see these blocks,,, it would have to be a stage 2 Super H with live hyd, battery under the seat models.

None in early 54 or any of the 53 Super H was like this....

Still 2.5 compression height, same 1.109 pin, but the firecrater option was now the best power addition to that engine, and still is a great option.

C-175 engines, and late C-169 engines, and most common for a rebuild will be a small pin, .875 pin, option which is a lighter weight option if C-175 rods are used, but in a SH or 300 with H-300 rods used,, the adapter bushing used is kinda heavy. But its a simple conversion available in most kits.

C-175's used a 3.625 bore, 2.5 compression height with a .875 pin was most common.

H blocks can be bored to fit in the 175 sleeves. Its a cheap option to do, a nice power upgrade, even some small stroker options at 3.625 bore!

We have a kit that makes a 350 into a "Super 350" if such a thing existed.

Hope this info helps. But if your looking for aftermarket big bore kits,,, know where to get those too and will point you in the right direction. ChadS

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

Hop to:

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