Hello Everyone! I have had my 1999 FD for about a month and finally got the Defi temp gauge working. The car seems to go up to 100-105c (212F to 221F) often.

I tested the fans and they do come on, but not until 105c which I think is stock settings. The inter cooler seems very small to me.

• Battery already relocated to back
• FC commander installed
• Vented hood
• HKS Single turbo converted

Should I get a V-mount intercooler and radiator or get a Datalogic or both to lower my temps (and probably improve horsepower)?

 

Is this just under normal day to day driving, or are you driving it hard? Has the front-end been modified at all?

I would look into addressing airflow issues because you can do some of that immediately and cheaply. You can use aluminum duct tape as a quick fix for some spots like above the radiator, and if you want to dig into stuff, use foam or whatever on the sides to make sure all the air is being forced into the radiator and intercooler.

From your profile pic it looks like maybe they installed a 99+ spec type aftermarket bumper setup but maybe forgot to do all the airflow parts along with it to save money (new air guide, oil cooler guides, etc). If you get the 99+ spec fans installed as well those will help a lot with idle and traffic temps (approx double the airflow of the pre-99 fans, but you still need to address the timing of when they turn on). RX-8 fans of a certain vintage (s2?) are a cheaper solution but may be on max airflow all the time.

It looks like they installed an all aluminum radiator of the same design as OEM (possibly slightly larger). I never had issues on just the stock intercooler & stock power levels, so assuming your single turbo setup isn't making a ton of extra power, I don't think you need to jump to a bigger intercooler right away. Do you know how much hp/boost it's pushing?

 

Thanks for your knowledge! After more investigation and working with the car I found out that the fans don't turn on until 107 C which is way high. The front bumper is a 99 spec as the car is a 1999 (just got it from Japan). You do have a great point on airflow for sure. There is one spot where the intercooler is covered by part of the bumper and I will most likely cut out a piece for better airflow (you cannot see that part of the bumper)

HP is pushing only 350 for now, don't really need more for what I use it for. ;-) But might get a bit crazy later. The Radiator is an aftermarket HP and it is a good one I believe.

All in all I purchased a PFC Master B from Xavier and just got it today! That will help a lot when I make the fans come on earlier.

Again thanks for your knowledge! It is very helpful.

 

Oh, I'd also say add some water wetter. That has helped me and is another quick improvement.

 

V mount is always a good idea, unless you want to stay stock. Single turbo, you are absolutely limited by the intercooler.

The OEM intercooler is OK for OEM power.