Home | Classifieds | History | Technical | Links | Store | About Us | Email
Topics Topics Edit Profile Profile Help/Instructions Help Member List Register  
Search Last 1|3|7 Days Search Search Tree View Tree View  

Palmer YT1 no thermostat?

Old Marine Engine » One and Two Cylinder Gas Inboards » Palmer YT1 no thermostat? « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Advanced Member
Username: narrabay

Post Number: 42
Registered: 02-2016
Posted on Monday, March 28, 2016 - 02:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I wonder do these old one-cylinder engines run no thermostat, or is there a universal in-line thermostat available?
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Advanced Member
Username: narrabay

Post Number: 45
Registered: 02-2016
Posted on Thursday, March 31, 2016 - 12:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

? anyone?
Top of pagePrevious messageNext messageBottom of page Link to this message

bartropr
Senior Member
Username: bartropr

Post Number: 83
Registered: 06-2006
Posted on Thursday, March 31, 2016 - 02:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I run my 1908 four stroke by controlling the feed to the geared pump.I then manually feel the output pipe temperature. I have also fitted a non permanent mechanical thermometer which is clipped on with a spring.I tried a digital one, but the magneto stopped it working properly
Top of pagePrevious messageNext messageBottom of page Link to this message

yuknat
Member
Username: yuknat

Post Number: 8
Registered: 07-2014
Posted on Thursday, March 31, 2016 - 10:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Historically these engines were not run with thermostats, the water pump regulates the temperature very well.
Top of pagePrevious messageNext messageBottom of page Link to this message

ernie
Senior Member
Username: ernie

Post Number: 2242
Registered: 01-2002


Posted on Thursday, March 31, 2016 - 10:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Note on Salt/raw water cooling If you are operating in salt water. Salt water tends to build up a corrosive scale when the engine operates above 140. In the raw water system this scale is building up inside the engine's water jacket and ports. When the scaling builds to the point that water flow is restricted the engine starts to overheat. At this point you are probably looking at replacing the engine.
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Advanced Member
Username: narrabay

Post Number: 46
Registered: 02-2016
Posted on Thursday, March 31, 2016 - 11:19 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks for the info guys. I assume the water pump regulating the temp means the faster rpm, the more water which maybe keeps temps in some sort of broad range of "warm"?

Ernie, not sure about others but my YT will never see salt water only protective engine coolant through a keel pipe loop.
Top of pagePrevious messageNext messageBottom of page Link to this message

yuknat
Member
Username: yuknat

Post Number: 9
Registered: 07-2014
Posted on Thursday, March 31, 2016 - 11:35 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The boat I'm planning for my YT1 will have keel cooling as well. That's the way to go, I try to never pump water onboard any of my boats
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Advanced Member
Username: narrabay

Post Number: 47
Registered: 02-2016
Posted on Thursday, March 31, 2016 - 11:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

one issue is how to cool the exhaust when keel cooling the engine. cant run that antifreeze into the exhaust obviously.

in my case I envision possibly a second very small jabsco pump to grab a little raw water and put it into the exhaust. but a YT has no pulley so that has to be worked out. I think there are more bottom ends than cylinders left of these engines. if I could find a spare flywheel, I'd have a machine shop turn a vee belt groove into it and do it that way.
Top of pagePrevious messageNext messageBottom of page Link to this message

scott_n
Senior Member
Username: scott_n

Post Number: 262
Registered: 02-2008
Posted on Thursday, March 31, 2016 - 01:39 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

in a closed system with a keel cooler and a expansion tank a bypass valve can be added to control engine temp
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Advanced Member
Username: narrabay

Post Number: 48
Registered: 02-2016
Posted on Friday, April 01, 2016 - 03:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

scott, you mean a thermostat bypass? I saw some made for snowmobiles that are about right. I'm not going to care much about this really just wanted to ask what was OEM. would be nice to eventually fit an inline. I may have one turned on a lathe that can fit a small, common thermostat. give it an art-deco look so it looks like it belons there but that would be way down the line
Top of pagePrevious messageNext messageBottom of page Link to this message

ernie
Senior Member
Username: ernie

Post Number: 2243
Registered: 01-2002


Posted on Friday, April 01, 2016 - 07:49 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Chris,
You are going WAYYYYYYYYYYYYYYYY toooooooooooo
high tech.
Just put the engine in the boat and enjoy it.
There were thousands of them that ran for an incredible amount of years salt water cooled.
Keel cooling yours will help it last at least another 70 years.
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Senior Member
Username: narrabay

Post Number: 51
Registered: 02-2016
Posted on Friday, April 01, 2016 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi Erniw I appreciate you hoping to save me from myself lol! Here is what I have in mind, having a smaller one made and use smaller tstat from an outboard or any common application (this one is 1.5" hose, I need 1/2"). It would be no big deal to insert something like that into the outflow hose to the keel cooler and have a nice warm engine in any weather.
Top of pagePrevious messageNext messageBottom of page Link to this message

ernie
Senior Member
Username: ernie

Post Number: 2245
Registered: 01-2002


Posted on Friday, April 01, 2016 - 07:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Chris,
The YT1 has a positive displacement pump.
You can not restrict or stop coolant flow.
A thermostat for this type of system needs to have 3 ports. In out and bypass.
If you don't have a bypass the pump can and most likely will make enough pressure to push connections apart or crack castings.
By the way the engine was designed to run at less than 150 deg F There is a hot spot near the spark plug that has no water jacket. What will happen at 180/190 is anybody's Guess
Top of pagePrevious messageNext messageBottom of page Link to this message

narrabay
Senior Member
Username: narrabay

Post Number: 54
Registered: 02-2016
Posted on Saturday, April 02, 2016 - 04:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

ernie that is technically awesome information and I thank you. future visitors will benefit as well.
Top of pagePrevious messageNext messageBottom of page Link to this message

ernie
Senior Member
Username: ernie

Post Number: 2247
Registered: 01-2002


Posted on Saturday, April 02, 2016 - 08:34 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Simple solution

http://www.oldmarineengine.com/discus/messages/5/271747.html

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Automatically activate URLs in message
Action:

Administration Administration Log Out Log Out   Previous Page Previous Page Next Page Next Page

Home | Classifieds | History | Technical | Links | Store | About Us | Email
&copy 2005 OldMarineEngine.com, P.O. Box 188, Forest Dale, VT 05745-0188 • Phone: 802-247-4864 • All rights reserved.
   Marine Engine Seloc Repair Manual Lookup Tool

marine gas engine repair and restoration