I am running a T67 single turbo on a ported motor. I am producing allot of heat, normally around 85 so says my PFC. So i think its time i upgrade my coolant system from the stock one. I wanted to find out what most ppl with single turbos are running and what they would recommend I run.

 

Koyo.

What front bumper, hood and intercooler do you currently have?

-J

 

85C is not really hot at all... BUT, it is always a good idea to upgrade the stocker just due to the fact it has plastic endtanks.

+1 on the KOYO. That and fluidyne radiators are what most around here run.

 

Koyo N-flo, it does a fantastic job keeping my 20B cool

http://banzai-racing.com/store/93+_rx-7_radiator.html

 

Fluidyne is easy to install and works very well.

 

Gorilla RE, I have the stock bumper, intercooler, and hood. but I am looking at also upgrading my intercooler next

 

fluidyne is the best but also most expensive.
koyo n flow is the second best and second most expensive
standard koyo aluminum is the most common and cheapest yet decent aftermarket(yet still OEM manufacturer) radiator.

all 3 of these are direct bolt ons with minor modifications, there is others that will fit but custom brackets need to be made.

 

Supernaut< Fluidyne, never heard of it i will have to look into it.

Banzai-Racing< 20b, you are the man. I think thats every Rotor heads wet dream to own one

 

http://www.rx7store.net/category_s/291.htm
Fluidyne Radiator 93+ RX-7
Our Price: $475.00

it looks good. Features

* Fluidyne Aluminum Radiators Feature:
* 100% Brazed Aluminum Core (No Epoxy Joints)
* High Efficiency Air Fins
* Polished Aluminum Tanks
* Brackets, Hoses and Fittings All Meet OE Fit-Up

How is instillation?

 

We've installed tested & used ALL of these rads. - (been installing them on FD & FC RX7's over 13 yrs)
In order of preference:
1) MazdaSpeed Radiator- by far the best quality! and fits perfectly
2) Fluidyne - fits almost as well as the MazdaSpeed unit-also very well made
3) Koyo-either Koyo rad is good but fitment & overall quality is not as good as the others. Yes its cheapest- but in this case you do get what you pay for!

 

God I hope this doesn't turn into another thread of "known" shops pissing on each other with their e-peens about which radiator is best.

 

are all this mounted v or up right?

 

Most of the vmounts use the koyo I think. Truth is both the Koyo and Fluidyne are both great rads, hell even the stock one is great except for the end tanks.

It's just a matter of personal preference and experience with each one that people flog the issue over I think.

 

Search for an old thread by me where I discovered a fitup problem with my fluidyne that caused it to overheat. The upper hose connection tube welded to the top of the radiator on mine is too high. When you bolt down the stock air box it pinches the radiator hose. The fix was leaving the stock air box loose. AdamC has a fluidyne and his upper hose connection is clearly at a lower angle than mine so he can bolt down his stock air box without pinching the radiator hose. I don't know if mine was a unique manuf defect or if they changed their jig or welder had a bad day. I never pursued it with them. As I said the problem went away when leaving the airbox loose.

 

You can get a CSC all aluminum for less than $250 at radiatorworld.com. Reputable shops put CSC rads in cars as replacements all day long. My CSC radiator has kept the car frosty during autocross grid and traffic.

The only thing I didn't like was the poor quality drain o-ring so I replaced it with a tight fitting fat GM injector o-ring.

 

Fluidyne is only 38mm thick, both the Koyos are 53mm. I have done side by side testing and the Koyo always out performs the Fluidyne. Not to mention the quality of the Koyo welds and overall cunstruction are much better.

I have had Fluidyne welds fail, I have never had a Koyo weld fail.

I see absolutely no benefit to Fluidyne.

1. It cost a lot more than Koyo
2. Quality is not up to that of the Koyo
3. The petcock drain system lasts about two times before needing replacement
4. Considerably thinner than Koyo
5. Integrated mounting brackets look cheap when stood up for FMIC

 

Am I the only one to see this? Your a single turbo on the stock intercooler??? Holy hell, that thing must get heat soaked on one pull!

 

What's the fitment of the koyo radiator in the stock location? I have a Greddy SMIC and I wonder if the thickness of it will cause problems with the intercooler.

 

I'm pilfering the following from an ancient thread I started:

 

I ordered the "medium" unit from RadiatorWorld, and they eMailed me 4 days later to tell me they couldn't get it anymore. I'm glad they did 'cause I found the same thing on eBay for $160 shipped.

My only complaint about it is that the upper mounting ear tab things aren't very sturdy, and I had to trim some metal off the outsides of 'em to get it to slip down between the frame rails.

 

93rx74lyfe< you are right. i will be upgrading my inter cooler soon because it does get very hot. my air temp is 56 so says my PFC. here are some pics of my current set up

 

aside from upgrading inter cooler, radiator, what do you guys think about a vented hood?

 

lol crazy engine bay never seen a big *** single on a otherwise pretty much stock setup

 

93Fd4life> lol , you have to hear her on. she has a port mounter so she sounds nice. slowly I'm modding her.

what do you guys feel about the "Koyo R1443 Aluminum Radiator 93-95 RX7". RX7store.com has it for $299.00 and they say it "offers 30% more cooling than standard radiators"

 

The main benefit the fluidyne has is fitment. If you have a med SMIC or larger you are going to have a real hard time fitting that sucker in properly.

I will say that a fluidyne does its job just fine for a street car. It keeps my car hovering around 80-85C on days less than 80F. But then again so does the stocker.