My radiator was hit by a rock many years ago punching a tiny hole into it. A crappy radiator was installed into it made by a company called Sosuki Industries.

My questions is about mounting. I would like to purchase a new 3 row radiator. Since I do't have the stock radiator in the car anymore will I have mounting pieces that will be missing that might have been thrown away with the original radiator? Or will a new radiator have everything I need with it?


Another question along the same lines..... Is a 180 degree thermostat & 185 temp switch a good idea? I live in New Orleans with major heat and I run A/C. My car is stock except for the exhaust system.



BTW.... Sosuki Industries is the same company that make these.

Piston Return Spring - $54.99 : KaleCoAuto.com, Your home for the rare, unusual, and hard to find auto parts.

A must have for any Rotary Car.

 

The Koyo radiator that most people run (and what I wholeheartedly recommend) needs the little OEM tabs on the side to mount to the top. From looking at the parts diagram, I don't think you can buy them separately, but they would be VERY easy to make or just track down a good used set.

There are rubber "feet" at the bottom of the radiator, they are often chewed up or damaged. They are available new.

Stock thermostat is fine. Back that up with an FC fan switch and PowerFC with an 85 deg. switch on point and you'll have no problems.

Dale

 

Ok REALLY stupid question..... I see this written everywhere on the forum. Power FC is a name of the Apexi stand alone computer and is a bolt in porgrammable unit. Correct? So a FC fan switch is what? I have a stock ECU. My fan comes on at 195 degrees currently. I have no control over the fan. Should I get a Apexi Computer? Someone gave me a knights sport computer but I have no instructions for it and am unable to install (which I could figure out I'm sure) but no way to program it without instructions. Don't even know if it could control the fan. It sure does look cool though. It has this mounting bracket that is molded into the cover of the steering wheel housing cover.

I will make the brackets if they are not on my current radiator. There are two different Koyo radiators. Which one do I need?

 

Welcome to confusing in Acronym-land .

The Power FC (FC for Fuel Computer) and is a plug and play fully programmable ECU. It allows control over 1 of the fan inputs, but only with the Datalogit laptop interface.

The FC thermoswitch is named for the 2nd generation '86-91 FC3S RX-7. The '89-91 fan switch on those cars kicks on at 97 deg. C, whereas the stock FD thermoswitch kicks on at 107 deg C. Yours might have one already.

The Knightsports EBC which is most likely what you have lets you control the stock boost control solenoids. While it's a nice unit (I had one once) the stock boost control solenoids are limited by the pills in-line with the wastegates, and they really aren't the world's best boost controller.

For the Koyo, just get the regular one. The N-flow is better in theory, but I've heard that it's overkill for a street car and can actually cause the car to run a bit warm in stop and go traffic. The regular one does a fantastic job and is reasonably priced.

Dale

 

The radiator top mounting brackets are not available, I just looked into this the other day for a customer. It is not an elaborate piece, you can make brackets, it is just a small L-bracket or someone might have a set in the for sale section.

 

Thanks for the heads up.....

 

Yep, what he said. Try and find them used if you can or try and have them made.