JarmoL

Just received a new coolant reservoir for my 996 GT3. By the sound of it there's something loose inside. Is there somekind of valve built in there which has some loose parts or what? I can hear that "rolling" sound (like a marble rolling) when I turn the tank upside down in my hands. Or is it defective already?

Two 996 GT3's blew their coolant tanks here last summer. Thought I should change mine befor it goes as well..

Rovman

Smart.

I replaced my reservoir when I pulled the engine to have my coolant fittings welded. It was found to have a bunch of hairline cracks in the reservoir that could not be seen when the engine was in the car.

I was curios if that problem had ever come up before. It sounds like it is more common than I thought. Sorry I never held my new reservoir in my hand to notice what you have observed.

Number54

My race shop says its a common failure.

Gofishracing

Mine was changed when the fittings were done. There is another thread on them. Pain to replace with engine in car.

TurboCup87

moi aussi!

JarmoL

Ok, I figured out it's the float for the coolant level sensor that's moving inside the tank.

olfrjf

hi all, my expansion tank is failed.
i have to change it, so, is it possible egngine in place or?
have you a DIY for this part?

Thanks
++
Olivier

rodneyr

Same here in that mine was changed when the fittings were done.

TurboCup87

I've heard that it helps to drop the engine an inch or so. Mine was changed when the engine was out.