Burping made EZ?

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The subject of coolant system burping and hot spots

is a concern with our EJ series engines.

 

I am in the process of replacing my 97 OB's engine with a hybrid EJ25 shortblock and EJ22 heads.

 

To help avoid any issues with trapped air in the coolant system, I am incorporating this addition.

 

I will add a Tee in the line from the coolant passage

to the intake. This tee will have a leg that extends above the intake and terminate in a removable cap.

 

Opening the cap will provide an air escape route, and should allow coolant to properly fill the passages.

 

I also plan on keeping the front end raised but would like feedback on this mod.

 

Even better would be to run this line to a swirl pot (pressure chamber above the engine).

Ala Jaguar and newer turbo Subes.

If anyone has a swirl pot for sale please contact me.

 

I entertain all comments on such modification.

Thanks to dennis111 and his excellent photo-documentary

for this picture.