I bought another fc this last January and I am finally getting around to working on it. It is a 1988 Rx7 FC RHD Turbo 2 with a very recent rebuild on it (<5000km). Let's just say it has been sitting for a few years before I got ahold of it and it's pretty clean for it. The only problem I am having is that there is a coolant leak coming from the turbo side (right) and I am just wondering what it could be before I start pulling the turbo and how hard of a job it will be to remove it. I have a few ideas and I am just looking for others so I am prepared for anything it could be. Thanks for any help you can offer.

 

Big leak, little leak? How are all other hoses?

 

Id say it's a medium leak and I have no idea not too old. I believe they were replaced along with the rebuild.

 

I've had a leak at the coolant passage between the LIM and the block. There is a o-ring back there that could have failed, causing the coolant to seep out. It would pool up below the injectors and drip down onto the turbo, causing a little bit of smoke until it burned off.

 

Yeah I have noticed coolant sitting on top of the LIM and kinda pooled there. I am just ripping it apart to find the source when I get the few chances to work on it.

 

Note that the LIM o-ring is definitely a likely leak source, since it gets warmed by the turbo shroud.