Ok, I am looking for a new rad. For my needs, an aluminum radiator is overkill and much too pricey. As far as I'm concerned the alum is just for show and will not add marginally enough cooling ability to offset the price ($400+)

What I am asking...
1) OE specs on S5 n/a radiator (# of cores, fins per inch, etc...)

2) Are there any other radiators out there that you people have come across that are an upgrade from stock but are not aluminum?

3) Anybody find a rad with a better warranty than 1 year. (My friend with a Mustang found a generic upgraded rad with Lifetime warranty....Now you can't beat that with a stick)

Thanks guys...

 

Try Absoluteradiator.com they caryy stock S5 replacements for $145

This radiator has rugged, all metal construction (brass and copper with a black finish) and has a core 1 5/16" with 2 rows of cooling tubes. This radiator is a direct replacement for the original radiator, and requires no modifications to install. This radiator is for the 89-92 Mazda RX-7 Non-Turbo (Late FC3S -- Gen II).

 

That sounds like what I have for my daily driver. Its heavier than the factory radiator but does cool my stock motor effectively. I replaced my water pump, thermostat, radiator and hoses all at the same time and never had any problems.

 

Aluminum radiators cool better but more importantly are repairable, unlike the stock ones. The koyo has a 2 year warranty from what I've heard and can be had for around $350 or so I think. But you can't beat a FLUIDYNE!

 

Koyo is larger and cools better. 53 MM dual core for KoYo, 38mm Single core for fluidyne. Koyo is slightly cheaper.. longer warranty also. the ONLY downside to koyo is you have to fabricate a mount if you use it on the S4 .. it bolts right on to a S5.

 

I have problems dropping a ton of money on "designer" things when their warranty is not too good. Fluidyne only has a 1 yr warranty. If they are soooo good, why not stand behind their product. (Don't quote me business reasons, I'm in grad buss school) just from an ethical standpoint, it bothers me. Why would Modine offer lifetime warranty for $200, but Fluidyne...the Gucci of radiators only offer 1 yr. Just food for thought.

BTW, I know fluidyne kicks *** performance and looks wise. But $400+ just hurts!

 

Yes it does hurt, lol. You don't gotta tell me. But it was well worth IMO. I don't regret buying it one bit. I always upgrade when I have to replace parts when possible.

 

Mazdatrix has the stock radiators with the plastic tanks and the aluminum core for the 89-92 for 306.98.Personally I wouldn't get the brass one.I had one for about two years until after I put my autometer temp gauge in and I don't think it cools as well as the stock one, and doesn't seem to cool down as fast as the stock one after hard driving either.If I had the money I'd spring for an all aluminum one.

 

My Fluidyne works great. I can't overheat my car, no matter how hard I try. I did not buy it as an "image" product. I bought it since I needed a new rad, and wanted something better than stock that was a direct bolt-in (the one time in my life when I wanted something easy to install...LOL). Took 2 hours to install (I worked slowly) and I haven't seen the temp guage move past 1/8 since.

 

Same exact thing for me.

 

I belive that the fluidyne is a very excelent radiator .. and I'm sure noone will have problems with there's ... but right now they are on back order do to a factory move untill Mid november. So I was just mentioning that the Koyo is *as good, or better* and is not back ordered.

 

Mainly because the majority of fluidyne's customers use their radiators on race applications. Meaning they get a lot more abuse than a street car.