Has anyone got an S5 Koyo R114N (N-Flow) into an S4? How about an S5 Fluidyne into an S4? 13b NA

It seems all the good radiators are for S5 applications. What modification will it take to put one of these in an S4? There is no fan, no shroud, no heater, etc. since this is a race car. I need to use stock mounting holes on car...

 

doesn't S4 and S5 have the same radiator mounting places? the only thing that's gonna be different is you're going to have 2 Rad caps (1 on radiator and 1 on the thermostat neck/housing since your car's an S4). if i'm mistaken, someone please correct me :P.

 

That's a good question and the one that needs to be answered, I don't know. There has to be lots of people on here that know that. I attached a pic of the current setup. I'm just trying to figure out if I can get a Fluidyne or Koyo N flow that is designed for an S5 into an S4 in the stock mounting location. Anyone? Thanks!

 

The S5 and S4 radiators should have same mounting points. The only thing that changed was the thermostat housing and where the rad cap was located.

Another difference is that the S4 Koyos are a radiator with no rad cap on it. The S5 Koyos have a fill neck on the driver side and a rad cap.

 

or buy a CSF from me will work on either one has a cap (comes with a new cap) for 235.00 shipped USA

 

Actually the koyo radiator are slightly different from series. The mounting Points for the brackets your suppose to take out of your stock to use is a tad different ,the S4 version a is a bit shorter.

 

you slightly wrong, s4 koyo have cap in the center, while the s5 hav a filler neck near the drive side and the coolant level sensor in the center. The s4 coolant level sensor is next to radiator cap.

 

thanks guys, it looks like an S5 Fluidyne or Koyo will fit fine in the S4.