This site is not affiliated with AGCO Inc., Duluth GA., Allis-Chalmers Co., Milwaukee, WI., or any surviving or related corporate entity. All trademarks remain the property of their respective owners. All information presented herein should be considered the result of an un-moderated public forum with no responsibility for its accuracy or usability assumed by the users and sponsors of this site or any corporate entity.
The Forum Parts and Services Unofficial Allis Store Tractor Shows Serial Numbers History
Forum Home Forum Home > Allis Chalmers > Farm Equipment
  New Posts New Posts
  FAQ FAQ  Forum Search   Events   Register Register  Login Login


Hardened valve seats or not?
 Post Reply Post Reply
Author
Message
  Topic Search Topic Search  Topic Options Topic Options
J&J View Drop Down
Bronze Level
Bronze Level


Joined: 24 Apr 2021
Location: IN
Points: 43 		Post Options Post Options   Thanks (0) Thanks(0)   Quote J&J Quote  Post ReplyReply Direct Link To This Post Topic: Hardened valve seats or not?
    Posted: 2 hours 22 minutes ago at 9:14am
The machine shop has the head for my 1952 CA. They say the seats look good and there's no reason to install hardened valve seats. If I do it I want to do everything right. Valve job (new valves), guides, springs, keepers, resurface the head. What's the consensus on hardened seats, at least on the exhaust side?
Back to Top
Sponsored Links


Back to Top
jaybmiller View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Location: Greensville,Ont
Points: 25036 		Post Options Post Options   Thanks (0) Thanks(0)   Quote jaybmiller Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 15 minutes ago at 9:21am
hmm... don't you NEED them because there's no lead; in gas anymore ? I know it's not a high performance muscle car engine but...gee, while it's all apart......
3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water
Back to Top
steve(ill) View Drop Down
Orange Level Access
Orange Level Access
Avatar

Joined: 11 Sep 2009
Location: illinois
Points: 89913 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 12 minutes ago at 9:24am
i have rebuilt several of the smaller AC engines and never put in a new seat..
Like them all, but love the "B"s.
Back to Top
WF owner View Drop Down
Orange Level
Orange Level


Joined: 12 May 2013
Location: Bombay NY
Points: 5140 		Post Options Post Options   Thanks (0) Thanks(0)   Quote WF owner Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 9 minutes ago at 9:27am
The biggest reason people change to hardened valve seats is because there is no lead in the gas. Lead used to be beneficial for the valve seats. Unleaded gas has been available since the early 70's. It has been the only thing available for decades.

This is just my opinion, but chances are you are never going to use your CA for much hard work. Why change to hardened valve seats, if your machinist says they are in good shape. It has worked this long with the original seats (which already be hardened). Why change them now?
Back to Top
DrAllis View Drop Down
Orange Level Access
Orange Level Access


Joined: 12 Sep 2009
Points: 22553 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 7 minutes ago at 11:29am
Well, a WD45 already had steel (hard) exhaust seats from the factory. I'll bet the CA does too.
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 11.10
Copyright ©2001-2017 Web Wiz Ltd.

This page was generated in 0.051 seconds.


Help Support the
Unofficial Allis Forum