Welcome! Please use the navigational links on your left to explore our website.

Company Logo Shop Now
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Kountry Life
Discussion Forum

Thermosiphon operation

Welcome Guest, Log in or Register
John N

07-03-2001 06:56:12

Report to Moderator

Let me try that again --

I have a 1950 Super A that has been sitting for about 20 years. Itís running fine, but the temperature is reaching 200 at the top of the radiator after 15 minutes of mowing. That seems too hot, and I plan on flushing the radiator.

My question is this: I seem to remember that with the radiator cap off a warm engine, you could look in and see the coolant flowing slowly across the top of the radiator. Is that correct, or is my memory wrong?

[Log in to Reply]   [No Email]
Mike K

07-07-2001 05:12:22

Report to Moderator
 Re: thermosiphon operation in reply to John N, 07-03-2001 06:56:12  

[Log in to Reply]  [No Email]
Kurt T

07-04-2001 14:51:25

Report to Moderator
 Re: thermosiphon operation in reply to John N, 07-03-2001 06:56:12  
I had the same problem on my C. I converted it to a waterpump. Now, engine really smiles under hard work. Doesn't come close to running hot. Cost about $100 and a days work.

[Log in to Reply]  [No Email]

07-04-2001 10:11:39

Report to Moderator
 Re: thermosiphon operation in reply to John N, 07-03-2001 06:56:12  
Remember, your system relies on temperature gradient to circulate. I don't think 200 deg is too hot for the top tank. The question is, what is the temp @ the bottom? There is no pressure cap to artificially raise the boiling point, so run it. If it doesn't boil, it ain't running hot, period.

[Log in to Reply]  [No Email]

07-03-2001 08:45:13

Report to Moderator
 Re: thermosiphon operation in reply to John N, 07-03-2001 06:56:12  
Just a sidebar but all I ever use in any of my tractors and truck for that matter is distilled water and prestone antifreeze mixed 50/50. i have never had any scale buildup problems because of this mix. Works for me.

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

07-03-2001 07:20:43

Report to Moderator
 Re: thermosiphon operation in reply to John N, 07-03-2001 06:56:12  
Yes, you can see the coolant flowing. The system is not pressurized and has no pump. The key to a thermosyphon system is to keep the radiator full so that the water can circulate by convection currents (gravity). It's OK if a little comes out the overflow when it gets hot. You should also mix the water and antifreeze before you put it into the radiator.
200 deg seems too hot to me also. After all that time, you could have scale built up in the block or the radiator may have some blockage. A good flush may help it out.

[Log in to Reply]  [No Email]

07-03-2001 14:53:17

Report to Moderator
 Re: Re: thermosiphon operation in reply to Red Dave, 07-03-2001 07:20:43  
As to the temperature at the topof the radiator, I' not sure what it should be, but is the return hose to the block hot. It norally is not too hot to hold your hand on with this system, if the radiator is cooling the coolant right. Ifd the return is hot, then the radiator is scaled up or dirty, or the fan is not pulling enough air through it. I may sticka thermometer in the topof my cub and see how hot it runs. I do know that with th C dad had, if the temp guage came off the cold mark, there was something wrong, like too little water to circulate.

[Log in to Reply]  [No Email]
Dick Davis

07-03-2001 23:57:56

Report to Moderator
 Re: Re: Re: thermosiphon operation in reply to RAW in IA, 07-03-2001 14:53:17  
How clean is the radiator? When you shine a bright flashlight forward through the radiator can it be seen through the front grill? (Caution: do not do this with the motor running!) Blow water and or air through the fins. It is amazing how much dirt and chaff pack in these machines over the years. Tell us what you find. Dick

[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

Today's Featured Article - Allis Chalmers ED40 - by Anthony West. Allis Chalmers as a tractor manufacturer in its own riht is but a memory. However the number of AC tractors still in existence today as either restored or unrestored examples is a testament to the quality of their products. This in itself is always apparent here in the U.K when attempting a purchase, as no matter what the model or condition the price will always be strong. ... [Read Article]

Latest Ad: Scraper 16 yard carry type. Southwest welding manufacturer company, Alhambra California Made around 1938. [More Ads]

Copyright © 1997-2021 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