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

Discussion Forum

Intake manifold

Welcome Guest, Log in or Register
Author 
Tim

11-12-2002 18:38:08




Report to Moderator

I own a 1948 John Deere model D , I found a crack in the intake manifold near the base between the bolts. I found it while running the tractor after dark, it would miss every now and then and I would see what looked like blue fire at the crack. I am wondering if the spark is jumping in the magneto when the intake valve is open and that's why it's missing and I'm seeing fire at the crack. I'm also wondering if I can weld the crack with a mig welder. Any information would be appreciated. thanks!!! Tim

[Log in to Reply]   [No Email]
Dave in Ohio

01-02-2003 03:39:47




Report to Moderator
 Re: Intake manifold in reply to Tim, 11-12-2002 18:38:08  
The answer to your question is NO. Your can not weld the intake with your MIG welder. The wire in your MIG welder is E70S or 7018 which is not compatable with cast iron. You must distinguish between Cast Iron and Cast Steele. In this case you have Cast Iron. You have two choices.
1. Weld with a Nicast rod or
2. Braze with Brazing rod.
Cast welding is not for the novice. Make sure the casting skin is removed from around the weld area. V out the area. Drill a hole at each end of the crack and above all control heat. Like I said "Not for the novice"

[Log in to Reply]  [No Email]
Slopoke

11-29-2002 12:03:35




Report to Moderator
 Re: Intake manifold in reply to Tim, 11-12-2002 18:38:08  
I bought a 9N and found a 1-1/2" crack in the exhaust part of the manifold facing the block where the exhaust pipe attaches. Since replacements and professional repairs are almost the same price, I figured I had nothing to lose by trying to repair it myself. I ground and filed the crack to about 3/16 wide V and drilled a small hole at each end. Using a propane torch, I heated the area as much as possible and used brazing rod for fill. I don't know how long it's going to last, but it works for now. The bronze colored repair doesn't show as it's facing the block.

[Log in to Reply]  [No Email]
david

11-13-2002 19:19:44




Report to Moderator
 Re: Intake manifold in reply to Tim, 11-12-2002 18:38:08  
I've never been able to weld cast iron with a MIG. Weld a lot of it but the same thing that makes a MIG work well on mild steel (concentrated heat) makes it difficult to weld cast.

For cast welding, remove as stated earlier, preheat with oxy acetylene, charcoal (or coke) and air blast. When good and hot spot weld both ends off the crack with a cast welding rod (nickle-manganese or stainless steel) then seam weld. Peen immediately with ball peen hammer, pack in sand to cool. DC, electrode positive is nice, too. Obviously some parts like tranmission housing can't get the full treatment but the more of it you can do the better the weld and the least chaance ofenlarging a crack or exploding the casting. A highly skilled welder can use a regular AC with a 6011 in a pinch.

[Log in to Reply]  [No Email]
Dennis Benson

11-13-2002 08:26:45




Report to Moderator
 Re: Intake manifold in reply to Tim, 11-12-2002 18:38:08  
A blue fire going down the intake port away from the valves that occurs when it misses is a leaking intake valve. It should be fixed before it burns the valve beyond being able to grind the valve, they are probably quite expensive by now. the manifold can be welded, but considering the work the engine needs it should be taken off so you can get a good gasket sealing surface. That crack will also cause the engine to be running lean, and might make it hard to start. The valve could have burned from the lean mixture, or the guide could be loose, or there could even be a crack in the head going through the seat into the port. A crack like that will have to be fixed so that it can be machined for installation of a new seat.

[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