Skip Posted January 10, 2007 Share Posted January 10, 2007 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. Quote Link to comment Share on other sites More sharing options...
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