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Fluidyne Radiator Pics

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Old 09-09-02, 11:04 AM
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Fluidyne Radiator Pics

Sorry for all the pictures, but now that I got my camera back I had to post pictures of all my mods, here is the Fluidyne Radiator in my 1990 Turbo II:


Old 09-09-02, 11:08 AM
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Hows the fitment on that thing? did you have to do any modifications to make it go in?
Cause I'm thinking of putting one of those in instead of trying to clean up my stock one and put it back...
Old 09-09-02, 11:11 AM
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This thing was a complete drop in replacement on my Turbo II. It was the easiest mod I have ever done. The only issue I had was getting the fan shroud off and back on...that thing is a pain in the ***.
Old 09-09-02, 12:24 PM
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I was considering a Fluidyne radiator myself.. but the core size is only 38mm with single chamber.

The Koyo on the other hand is dual chamber and 53mm. More cooling. and cost $40 less. Both are drop-in's ... so I went with the Koyo. Plus the Koyo has a 1.5 year warranty the fluidyne only 1 year.

But I must say i have heard nothing but good things about the fluidyne.

Last edited by Rpeck; 09-09-02 at 12:30 PM.
Old 09-09-02, 01:00 PM
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Bigger is better either way that looks sweet man
Old 09-09-02, 01:13 PM
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Originally posted by Rpeck
I was considering a Fluidyne radiator myself.. but the core size is only 38mm with single chamber.

The Koyo on the other hand is dual chamber and 53mm. More cooling. and cost $40 less. Both are drop-in's ... so I went with the Koyo. Plus the Koyo has a 1.5 year warranty the fluidyne only 1 year.

But I must say i have heard nothing but good things about the fluidyne.
The Fluidyne is only a single chamber? Really?

I wonder why Koyo made a radiator for the S5s and not the S4s?

Does anyone know the differences between the S4 and S5 radiators (assuming that they were stock)? What is the difference between the S4 and S5 Fluidyne radiators?

Last edited by DomFD3S; 09-09-02 at 01:19 PM.
Old 09-09-02, 01:47 PM
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I got a S5 Koyo radiator for my S4 .. different filler neck & you need to fabricate one side of the mounts .. otherwise its perfect.
Old 09-09-02, 01:54 PM
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looks good!
Old 09-09-02, 02:16 PM
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Originally posted by Rpeck
I got a S5 Koyo radiator for my S4 .. different filler neck & you need to fabricate one side of the mounts .. otherwise its perfect.
That's it? If that is the case, then I'm going to purchase the Koyo as opposed to the Fluidyne.

Does anyone have a picture of the Koyo radiator installed in their FC?

Last edited by DomFD3S; 09-09-02 at 02:41 PM.
Old 09-09-02, 03:22 PM
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how much does the Koyo cost, and where to get it?
Old 09-09-02, 03:35 PM
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The Fluidyne was not cheap...Quite expensive.
Old 09-09-02, 05:12 PM
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what about c&r? they make nice radiators but i haven't heard about anyone with one in their rx7
Old 09-09-02, 06:28 PM
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My Koyo cost me .... $398 including shipping and Tax, I will post some pics later this week .. with the mount I facricated also .. its not on the car at the moment do to my rebuild process.
Old 09-10-02, 07:59 PM
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where did u buy the Koyo. I found the fluidyne for 412 on absoluteradiator.com. but if the koyo is bigger then i ll go with that one.
Old 01-16-03, 09:53 AM
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did you put your radiator shroud back on? do you need the shroud still even if your not using a electric fan?
Old 01-16-03, 11:15 AM
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Anyone know if Griffen Radiators are any good? I have heard Fluidyne will extend the life of the rotary engine about 30%
Old 01-16-03, 12:52 PM
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Originally posted by RotaryRevn
I have heard Fluidyne will extend the life of the rotary engine about 30%
That's BS
Old 01-16-03, 02:44 PM
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Originally posted by breesej


That's BS
i agree.

how is a radiator going to make an engine last longer.
Old 01-16-03, 02:55 PM
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hmmm does anyone know an approximation of how much better the koyo/fluidyne cools as opposed to the stock?? I've heard that its a waste of money to swap out the stock radiator for an n/a..... anyone have any input?? thanks all
Old 01-16-03, 02:59 PM
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Honestly unless you are running hot or your rad is leaking, I wouldnt waste my time.
Old 01-16-03, 03:40 PM
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If that is special made JUST for the series 5 FC then you would think they would have made the nipple on the filler point towards the front where the overflow tank is. Instead you need to bend a hose over there. I know this is a stupid gripe, but if you're gonna make a custom piece then make it right. Otherwise it looks perfect.
Old 01-16-03, 06:17 PM
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The person who said that he has seen these radiators extend the life of the engine 30% is a well known rotary builder in this area, and no he doesn't sell them, he only builds motors. Don't know if there is any truth to it or not.
Old 01-16-03, 06:48 PM
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Hmm the guy i bought my car from replaced the radiator, but I dont know what kind it is, prolly jsut stock. I dont see any kind of sticker all I kow is its gloss black *lol*

- James




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