Hello, my 91 rx7 s4/s5 turbo project has a number of problems with it, but for now I'm just wondering if anyone knows where I can obtain what I think are the coolent lines that plug into the back of the lower half of the intake manifold?

As far as I can tell they are supposed to run from the heater core to the back of the intake manifold and from there into the engine. I'm not too good with this as I have never had the chance to see a car with these parts in place. any help with this (particularly if anyone has a picture of this area of their engine bay) would be appreciated.

 

There are no rubber coolant lines on the lower intake manifold of any FC. The lines for the heater core come out of the firewall and connect to the driver-side rear iron (under the oil filter) and to a metal hardline on the passener-side. The hardline runs up along the frame rail to the radiator.

Take a picture of the line your talking about and someone will be able to tell you what it is. Once you know what it is, your local Mazda dealership's parts department will be able to order any formed hoses.

 

This is the coolant line for the thermowax. You will have to pull out half of the intake manifold to gain acces on the bottom hose then replace it with just regular fuel injector hose. Or just plug that line and get rid of the thermowax. While you're at it you can do some porting on the intake TB, Chamber and plenum.