Turbo (ON3) Boiling Coolant Overlow Tank?
I don't think this is an ON3-specific issue, but rather a front-mount turbo problem. I took the car for it's first long drive and really romped on it. When I came to a stop light I started to smell a little coolant and then a cloud of steam came from under my hood. I checked my gauge and temperature was normal. I immediately pulled over to investigate. Coolant was all over the underside of the hood and the overflow tank was bubbling/boiling. I let it cool down for a minute or two. When I fired it up and let it idle ... everything as normal with no leaks.
Another buddy running an ON3 system has the same exact problem. Normal engine temps but the overflow cap sprays coolant after a hard run. He thought it might be head gasket leaks pressurizing the cooling system but it only does it after a longer hard run. Leaking head gasket would do so once it warmed up. The turbo is located so close to the tank it's gott be cooking it.
Has anyone else encountered this and did relocating your coolant overlow solve the issue? I bought a blanket but it won't fit because of the tight clearance to my Meziere Electric water pump.
1965 AC Cobra 427SC Replica [Carb Edelbrock 306ci SBF, 1980lbs]
2001 Mustang GT - [645WHP, 652TQ][MMR900 + Trick Flow Heads + Intake][ON3 Turbo @ 14psi]
2007 Jeep Grand Cherokee HEMI, 2006 Infiniti G35, 2012 Honda CRV EXL [The Daily Drivers!]