Jump to content

Thermostat bypass


zhap135
 Share

Recommended Posts

Hello! 

I have a Pinto SOHC. . The Thermo bypass has been stoppered since before I gotthe car as a PC project. What I find is that the the (mechanical) stat doesn't want to open when the engine is hot. Is it because there is no flow of hot water over it? Should this stoppered bypass actually allow water to flow over the stat allowing it to operate?

I've replaced teh stat anyway (had a spare) but in any case when tested the stat worked. Originally I believe it had a header tank, but now has omne of those rads with an integral header and pressure release cap.

 

IMG_20220518_145005822_HDR.jpg

Link to comment
Share on other sites

That is not a bypass as such it was an air bleed to the header tank in a sierra.

It did allow some flow via the header tank to allow the thermostat to work from cold.

Most people drill a 3mm hole in the flange of the thermostat to achieve the same effect.

Link to comment
Share on other sites

2 minutes ago, IanS said:

That is not a bypass as such it was an air bleed to the header tank in a sierra.

It did allow some flow via the header tank to allow the thermostat to work from cold.

Most people drill a 3mm hole in the flange of the thermostat to achieve the same effect.

Aaah, thanks Ian, and thanks for the tip! I really didn't think of that.

So the bleed can be stoppered with teh assumption that any air accumulating at that point will be eventually blown into the rad?

Link to comment
Share on other sites

5 minutes ago, IanS said:

The air will only go into the top tank of the radiator reliably if the top tank is a bit higher than the thermostat.

Yes, definitely is.That's brilliant, thanks Ian!

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...