The Stovebolt Page Forums Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Helping out ...


EVENTS

Check in for status!

Jump over to the Events Forum, to post events -- new ones or the ones we have been enjoying for some time.
Look to see what's been cancelled or postponed.

Encourage one another!

Stovebolt Site Search
 
Old Truck Calendars
Months of truck photos!
Nothing like an old truck calendar

Stovebolt Calendars

Check for details!


Who's Online Now
11 members (3B, bowtietim, 52Carl, 1958Viking, EdPruss, 1 invisible), 206 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Forum Statistics
Forums50
Topics120,583
Posts966,487
Members43,704
Most Online1,229
Jan 21st, 2020
Image Posting Policy
Previous Thread
Next Thread
Print Thread
Page 1 of 2 1 2
Thermostatic spring
#1364569 Fri Jun 12 2020 10:16 AM
Joined: Oct 2009
Posts: 161
W
wokri Offline OP
Shop Shark
Hello,
how should the thermostaic spring works?
My knowledge is, the spring should keep the flap closed if the engine is not warm and should the flap open, if the engine is warm.
And now my question:
If I heat the spring, the spring turns and the spring leaves the the anchor pin. Is this normal or should spring rake to the anchor pin?
An another question, the springs they are offered have 5 coils, the spring that was me sold have 9 coils and is ver smart. Which one is the better one?
Ask
Wolfgang


I'm working on a Chevy Pickup 3600, build 1953 with an 235 cui engine.
Here you can watch my truck: https://www.kripahle-online.de/unterricht/?page_id=2532
Re: Thermostatic spring
wokri #1364582 Fri Jun 12 2020 12:44 PM
Joined: Mar 2014
Posts: 1,611
J
Shop Shark
Hello Wolfgang,
Please see the attached images. I hope you can see them ok. This is how the spring should be installed. I do not know if the difference of 9 coils will make any difference. You can use different springs. Some person said here a couple of years ago the spring for the Jeep would work and was much less expensive. Please tell us if you have any questions.

Attached Files
MVC-062F.JPG (42.2 KB, 221 downloads)
MVC-061F.JPG (38.14 KB, 221 downloads)

Jon

1952 1/2 ton with 1959 235
T5 with 3.07 rear end
Re: Thermostatic spring
wokri #1364587 Fri Jun 12 2020 01:56 PM
Joined: Aug 2019
Posts: 216
O
Shop Shark
Here's an interesting video of a guy heating it with a heat gun:

https://www.youtube.com/watch?v=5wDV4wIM6Vw

The shop manual mentions it... but not much detail
http://chevy.oldcarmanualproject.com/shop/1955truck2/55ctsm0620.htm


'59 Chevy Suburban, NAPCO
Re: Thermostatic spring
Ott3r #1364648 Fri Jun 12 2020 06:27 PM
Joined: May 2015
Posts: 2,634
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
Originally Posted by Ott3r
Here's an interesting video of a guy heating it with a heat gun:

https://www.youtube.com/watch?v=5wDV4wIM6Vw
Is Uncle Brad our own Brad Allen? He's a wealth of information. thumbs_up

Originally Posted by Ott3r
The shop manual mentions it... but not much detail
http://chevy.oldcarmanualproject.com/shop/1955truck2/55ctsm0620.htm
An interesting item in that part of the shop manual says to free it up with kerosene mixed with a little baking soda. Homebrew recipe for penetrating oil??

Last edited by klhansen; Fri Jun 12 2020 06:27 PM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Thermostatic spring
wokri #1364705 Sat Jun 13 2020 02:17 AM
Joined: Mar 2010
Posts: 9,401
5
Master Gabster
As far as the spring leaving the pin once heated is concerned, it is not a problem as long as the valve shaft is free. The exhaust flow from the engine will push the valve fully into the warmed up position. All the spring is for is to keep the valve in the cold engine position until the engine warms up.

Re: Thermostatic spring
wokri #1364728 Sat Jun 13 2020 05:26 AM
Joined: Dec 2005
Posts: 532
A
Shop Shark
Any ideas on what to do to keep the spring from coming/falling out of the shaft?

I installed a 1954 Corvette exhaust manifold on my rebuild and the spring I bought keeps falling out. Luckily I have found it each time and didn't loose it out on the streets of Dallas!


58' 3200 235 3-speed/OD

Re: Thermostatic spring
wokri #1364738 Sat Jun 13 2020 12:16 PM
Joined: Sep 2001
Posts: 30,328
ace skiver
Gently pinch together (a little) the slit in the shaft (where the spring-end goes into the shaft).

Warning: those "tangs" can break from too much bending over the years.

A new shaft is available. [chevsofthe40s.com]
But, it can be "interesting" to remove/reinstall.
You need to ream/drill the holes in the manifold.


Tim
1954Advance-Design.com [1954advance-design.com]
1954 3106 Carryall Suburban [stovebolt.com] - part of the family for 49 years
1954 3104 5-window pickup w/Hydra-Matic [1954advance-design.com] - part of the family for 15 years
- If you have to stomp on your foot-pedal starter, either you, or your starter, or your engine, has a problem.
- The 216 and early 235 engines are not "splash oilers" - this is a splash oiler. [chevy.oldcarmanualproject.com]
Re: Thermostatic spring
ApacheFiend #1364829 Sun Jun 14 2020 01:11 AM
Joined: Mar 2010
Posts: 9,401
5
Master Gabster
Originally Posted by ApacheFiend
Any ideas on what to do to keep the spring from coming/falling out of the shaft?

I installed a 1954 Corvette exhaust manifold on my rebuild and the spring I bought keeps falling out. Luckily I have found it each time and didn't loose it out on the streets of Dallas!
That '54 Corvette exhaust manifold will never work on whatever engine you put it on, sadly.
If you send me a PM with your mailing address, I will provide my address and send you money for shipping it to me... smile
On a slightly more serious note, I would make sure that you have the correct spring.
Does it look like the slot which the spring goes in has been spread? I would not try to spread nor mash the slot whatsoever.
In your case, you would be better off making a shim to take up the slack. Stainless steel or copper would hold up fine in that environment.
Carl

Last edited by 52Carl; Sun Jun 14 2020 01:12 AM.
Re: Thermostatic spring
52Carl #1364845 Sun Jun 14 2020 05:13 AM
Joined: Dec 2005
Posts: 532
A
Shop Shark
Originally Posted by 52Carl
That '54 Corvette exhaust manifold will never work on whatever engine you put it on, sadly.
If you send me a PM with your mailing address, I will provide my address and send you money for shipping it to me... smile
On a slightly more serious note, I would make sure that you have the correct spring.
Does it look like the slot which the spring goes in has been spread? I would not try to spread nor mash the slot whatsoever.
In your case, you would be better off making a shim to take up the slack. Stainless steel or copper would hold up fine in that environment.
Carl

I may have been born at night, but it wasn't last night Carl! LOL!

I got the spring from ChevyDuty I believe. Trying to find places for 1953-1954 Corvette parts is pretty hard. I'll try shimming it and see if that works.


58' 3200 235 3-speed/OD

Re: Thermostatic spring
wokri #1365306 Wed Jun 17 2020 06:47 PM
Joined: Oct 2009
Posts: 161
W
wokri Offline OP
Shop Shark
Hello,
and another question, how must the weight sit that sits on the shaft, which is controlled by the spring.
Has someone a picture, that show the position of the weight, when the flap is closed or open, if the engine is cold.
Ask
Wolfgang


I'm working on a Chevy Pickup 3600, build 1953 with an 235 cui engine.
Here you can watch my truck: https://www.kripahle-online.de/unterricht/?page_id=2532
Page 1 of 2 1 2

Moderated by  Woogeroo 

Link Copied to Clipboard
Home | FAQ | Forum | Swap Meet | Gallery | Tech Tips | Events | Features | Search | Hoo-Ya Shop
Powered by UBB.threads™ PHP Forum Software 7.7.4