New radiator is running colder

[ktk11]

What size is the restricted hole size in the OEM radiator for the surge hose fitting? I wish to make a restrictor with the same OEM hole size to put in the hose end or in the radiator fitting of my new radiator.

 

[Fless]

What size is the restricted hole size in the OEM radiator for the surge hose fitting? I wish to make a restrictor with the same OEM hole size to put in the hose end or in the radiator fitting of my new radiator.

I haven't see a measurement, but here's one solution from @Tozan's book of tricks:

07 Tahoe engine hot ac turned off

I am just saying a quick fix can be the clamp, like I suggested, but the washer tig welded in there should also fit the bill.

www.tahoeyukonforum.com

 

[Marky Dissod]

Might be MORE useful to find ways to make the restriction VARIABLE.
Whenever it's hot out, or whenever the vehicle will work or play HARD,
open it up some, keep things a lil cooler, to offset the powertrain's extra effort.