Let's talk FE thermostats..

[priobe]

I have a question?

Why do you drill a 1/8 hole if you the water pump has a bypass hose connected to the intake? I understand if you dont have the hose connected why doing so, but why both.


I am running a 180 thermo with the bypass connected and my temp are great. Motor warm up, goes to 190 and stays there in traffic with a single fan. Once I get to an open area and cruise temp drop to 170 - 180 and oil temp max 210

[patrickt]

Originally Posted by priobe

Why do you drill a 1/8 hole if you the water pump has a bypass hose connected to the intake? I understand if you dont have the hose connected why doing so, but why both.

It lets a little water through the hole to spray on the back of the thermostat to give a more uniform heat-up so it opens better. It also allows air pockets to purge through.

[undy]

Originally Posted by patrickt

It also allows air pockets to purge through.

...and steam pockets too. It allows a bit of inceased cooling flow across the t-stats sensing bulb, allowing it to react sooner.

[Argess]

Originally Posted by priobe

I am running a 180 thermo with the bypass connected and my temp are great. Motor warm up, goes to 190 and stays there in traffic with a single fan. Once I get to an open area and cruise temp drop to 170 - 180 and oil temp max 210

I get the same figures (no oil cooler), and with a Napa thermostat. Not sure, but it may have been a Gates brand.

[Bobcat]

I can`t find the thread , but there was an answer from Rick Lake where he explained what to do to the Chrysler ( ? ) thermostat and compared the size difference ( flow area ) between it and the others . You might try contacting Rick on this as he says this is what solved his problems .

Bob

[undy]

Originally Posted by Bobcat

I can`t find the thread , but there was an answer from Rick Lake where he explained what to do to the Chrysler ( ? ) thermostat and compared the size difference ( flow area ) between it and the others . You might try contacting Rick on this as he says this is what solved his problems .

Bob

I read Rick's posts on the subject and got the thermostat he specified. The hole diameter is the same as the others, so no help there. I'd also talked on the phone with Rick concerning that issue.