Fluidyne radiator????
12-20-01, 11:03 AM
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FD Aftermarket Radiators
I suggest that you look at both Koyo and Fluidyne if you are in the market for a higher cooling capacity radiator. Here's what I learned from my research on the subject:
Stock radiators are 1/2" thick, have plastic end caps, and are generally viewed as not capable of sufficient cooling for "high temperature" operating conditions.
The Fluidyne all aluminum radiator is 3/4" thick, direct replacement, and a vast cooling improvement over stock. It was one of the first higher capacity aftermarket radiators developed for FDs.
Koyo has recently introduced a 1" thick all aluminum radiator for FDs. The additional thickness translates into 30% higher cooling capacity than the 3/4". While this radiator is advertised as being a straight "bolt-in" replacement, some owners have reported "fitment" problems requiring minor modifications to the stock airbox. I'll find out about this soon because I just ordered a Koyo.
Of course MazdaComp aftermarket radiators were the first on the market and directed at racers. MazdaSpeed website lists the MazdaComp radiator at $629.00. There may be better prices but I haven't tried to track them down. In any case it is going to be the most expensive option. Here's their link:
http://www.mazdamotorsports.com/weba...ategoryDisplay
Absolute Radiator has very good prices and lists the Koyo for $375 and the Fluidyne for $412.95. Since you are not in California you don't have to add sales tax. I believe that with the introduction of the Koyo radiator it is driving down the cost of the Fluidyne. Here's the link to Absolute Radiator:
http://www.absoluteradiator.com/cgi-...5ab+1005716313
Jason at the RX-7 Club store currently advertises the Koyo for $395. Here's his link:
http://www.rx7store.net/
Finally, I stumbled on a place called Phase 2 Motortrend (again in California) that seems to have very good prices on just about everything RX-7. They sell the Koyo for $375 and the Fluidyne for $430. Here's their link:
http://www.phase2motortrend.com/rx7.htm
A new radiator would make a great Xmas present for your FD!
Take Care
Stock radiators are 1/2" thick, have plastic end caps, and are generally viewed as not capable of sufficient cooling for "high temperature" operating conditions.
The Fluidyne all aluminum radiator is 3/4" thick, direct replacement, and a vast cooling improvement over stock. It was one of the first higher capacity aftermarket radiators developed for FDs.
Koyo has recently introduced a 1" thick all aluminum radiator for FDs. The additional thickness translates into 30% higher cooling capacity than the 3/4". While this radiator is advertised as being a straight "bolt-in" replacement, some owners have reported "fitment" problems requiring minor modifications to the stock airbox. I'll find out about this soon because I just ordered a Koyo.
Of course MazdaComp aftermarket radiators were the first on the market and directed at racers. MazdaSpeed website lists the MazdaComp radiator at $629.00. There may be better prices but I haven't tried to track them down. In any case it is going to be the most expensive option. Here's their link:
http://www.mazdamotorsports.com/weba...ategoryDisplay
Absolute Radiator has very good prices and lists the Koyo for $375 and the Fluidyne for $412.95. Since you are not in California you don't have to add sales tax. I believe that with the introduction of the Koyo radiator it is driving down the cost of the Fluidyne. Here's the link to Absolute Radiator:
http://www.absoluteradiator.com/cgi-...5ab+1005716313
Jason at the RX-7 Club store currently advertises the Koyo for $395. Here's his link:
http://www.rx7store.net/
Finally, I stumbled on a place called Phase 2 Motortrend (again in California) that seems to have very good prices on just about everything RX-7. They sell the Koyo for $375 and the Fluidyne for $430. Here's their link:
http://www.phase2motortrend.com/rx7.htm
A new radiator would make a great Xmas present for your FD!
Take Care
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12-20-01, 02:15 PM
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$348 on ebay
Here's the link to the ebay seller of the Koyo radiators for the FD. $348 opening bid $368 instant buy, $9 to ship anywhere in the USA. Sales tax charged in many states so check the ad. Absolutely rockbottom prices.
http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1679410060
http://cgi.ebay.com/aw-cgi/eBayISAPI...tem=1679410060
12-20-01, 04:56 PM
#18
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Why won't the Koyo work with the Greddy FMIC?
Have you tried it or heard of anyone having fitment problems with the Greddy FMIC?
Please let me know Im ready to order it but since I saw your post I held back...Let me know ASAP!!!! Thanks
Have you tried it or heard of anyone having fitment problems with the Greddy FMIC?
Please let me know Im ready to order it but since I saw your post I held back...Let me know ASAP!!!! Thanks
12-20-01, 05:15 PM
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i think the koyo will fit with greddy FMIC only under certain conditions.
1) relocate battery.
2) get a battery even smaller than the miata battery. i have the miata battery and it doesnt look like the radiator will fit, due to the fact that the fan shroud is almost touching the battery already.
either that, or you can modify the fan shroud a bit so it will fit. maybe you can opt not to use th fans, but that would just be plain stupid.
1) relocate battery.
2) get a battery even smaller than the miata battery. i have the miata battery and it doesnt look like the radiator will fit, due to the fact that the fan shroud is almost touching the battery already.
either that, or you can modify the fan shroud a bit so it will fit. maybe you can opt not to use th fans, but that would just be plain stupid.
12-20-01, 06:17 PM
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Yeah, you can make anything if, with a little help of some KY jelly. But, why would you want to go through that. It's a pain in the ***...
The Koyo core is too thick and the radiator neck will be in the way of the turbo to intercooler pipe. You will also need to trim the fan shroud.
It's you money.......
The Koyo core is too thick and the radiator neck will be in the way of the turbo to intercooler pipe. You will also need to trim the fan shroud.
It's you money.......
12-20-01, 09:37 PM
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Will the front mount intercooler allow enough air to pass through to the radiator? If this is a problem isn't going with a thicker radiator like the koyo a no no?
12-21-01, 11:07 AM
#24
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Some corrections: the Fluidyne is 43mm (1.5") and the Koyo is ~52mm (2"), the stock radiator is ~25mm (1"). Any radiator can be remounted in the standing position (for FMICs), but both Fluidyne and Koyo were designed as stock mount radiators and should work with all SMICs. The Fluidyne is drop-in, the Koyo requires some fitment due to the thickness to get it to go in and to not interfere with the intercooler.
Last edited by Nathan Kwok; 12-21-01 at 11:09 AM.
