Heater delete

[Mack F-700]

Can anyone tell me if I can plug the inlet and outlet going to the heater core on the water pump and manifold, or does it have to circulate?

 

[Darter6]

Delete away. Photo included

 

[Mack F-700]

Nice!

Perfect
Thank you

 

[remytherat]

It really doesn't have to circulate because it's such an inefficient pump but you can also bridge them if you want to. Either way works fine.

 

[Mack F-700]

Thank you

 

[furrystump]

I have had rubber plugs split. Went with pipe plugs and no issues for years. The nipples can be a pain to get out, but there are tricks to do it. I have a mechanical temp gauge sender in the intake one.

 

[furrystump]

Here

 

[Darter6]

I have had rubber plugs split.

Yes the rubber caps from part stores last about a year or less.My photo above shows one.
The car got A/C and heater after the shake down period.
The 70-up pumps can be tapped and a pipe plug installed with thread sealer.
Not much meat so don't over tighten.

 

[Mack F-700]

Here

View attachment 1716149299

 

[Mack F-700]

Thanks

 

[cudamark]

I think I still have the fitting and rubber cap from an original heater delete car. It apparently didn't have to circulate.