Thanks Bobby

I read a post from way back from Lynn E. Hanover whom I understood was well worth listening too.
He didn’t mention any need for the hole between inlet and outlet.
He did however talk about making sure the outlet was restricted compared to the inlet to prevent pump cavitation.
He mentioned that he uses a 5/8” restriction, however that all systems are different and depend upon rad resistance and plumbing etc.
I’ll experiment a little and see what happens.

Cheers

Steve

On 27 Dec 2017, at 9:44 pm, Bobby J. Hughes bhughes@qnsi.net <flyrotary@lancaironline.net> wrote:

Steve,

My thermostat hole is plugged and have a #30 hole drilled through the plug. Bobby

Sent from my iPad

On Dec 26, 2017, at 9:18 PM, Stephen Izett stephen.izett@gmail.com <flyrotary@lancaironline.net> wrote:

Merry Christmas to all

I’m still troubleshooting our cooling system.
Renesis 4 port in Glasair Super II RG

We removed the thermostat, and plugged the whole between the in and out circuit with a threaded plug.
I think I read someone saying there should be a hole in that plug, which I take it was to let air our of the inlet side of the pump.
On a picture of the front housing I think I can see a hole in the top of the pump impeller housing that might perform this function.
Can anyone comment?

Thanks

Steve Izett
Perth Western Australia
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