Itinerant Air-Cooled

I did what Busdaddy had success with my brass thermostat in my 71' engine. You basically lay the thermostat on something firm like the flat part of a vise. Get a punch that fits into the factory crimped areas already on the thermostat. I just added to the factory crimped area making the factory crimp area longer. I added like two punches to each crimped area. I'd then stop and check it. After a little while, I suddenly got no longer push the pin in and it fully extended by itself. I then screwed the thermostat back into the oil bath and checked the operation while also using a laser temp reader. It was opening/closing again at the correct temperature range.

Busdaddy gets two stars!

Mine is working just fine. LOTS of pressure holding the flap in position to block the preheat air.

Thanks for the tips guys! I will try this. I also use non-ethanol gas where availabil. Seems to help.

running premium always helped me in summer and my heads were cooler too.