What about this radiator??PWR Aaluminum Radiator..I think the price is about 430$.Here is a link: http://www.pwr-performance.com/mazda.htm

I don't know a lot but an almost double sized radiator can pass more air in the motor so better performance...Good gains i believe...

What do u think??Is there any1 who has changed his stock radiator???Can u give me some info?

 

Bump
Im also looking at radiators. Are there other options apart from PWR?

Thanx

 

Vivid Racing has this in their project RX8. Ask them for updates on performance.

 

https://www.rx8club.com/vividracing-com-59/what-about-pwr-aluminum-radiator-37532/

 

I had a PWR on my FD. Very nicely built, no complaints.

jds

 

Hey bureau13, how much heavier is the PWR radiator compared to stock? I heard that is about 3lbs heavier. is that so? I just want to make sure that its not like 20lbs heavier than stock.

Thanx

 

You know, I never compared them directly, but it wasn't very heavy. The thing is all aluminum (at least the one I had was). It had a thicker core, but was a two-row just like stock, and it had aluminum end tanks instead of plastic. It wasn't anywhere near 20 lbs heavier, I'm sure of that.

jds

 

I remember talking to Huff about the PWR radiator. It's a really nice piece. I don't know what kind of gain I would expect in stock form. I'm waiting for Koyo to come out with a radiator for the RX-8. I think they have an American subsidiary, which means it'll be easier to get my hands on one.

 

doesnt having a better radiator mean better cooling and a ...longer lasting engine...?...........cuz if it is i wouldnt mind doing anything to keep the engine long as possible since rotories have a problem seeing 100kmiles

 

Huh? Where did you get to that conclusion? I've seen rotary engine go far beyone 100,000 miles.

 

The thermostat determines what temperature your engine runs at. A larger or more efficient radiator will help keep your engine from over heating. Unless you are road racing or experiencing an over heating problem, a larger radiator really wont do anything for you from a performance standpoint. (But it does look cool :D )

 

Wouldn't it be prudent to change out the thermostat to a lower temp. thermostat when you change out the larger radiator? If the larger radiator cools the collant too much wouldn't that cause it to be stuck in recirculation mode all the time.

 

You don't always have to get a larger radiator, maybe just one that is more efficient, though the surface area of the former will dissipate heat better. Radiators are heat exchangers, so they should follow the same principles of aftercoolers.

 

OK, I'll bite: What is an "aftercooler"?

 

Yes the thinking here is larger radiator = larger surface area so better heat exchange. Of course things should always be verified with testing.

 

I think it's similar to an intercooler, used on a supercharger, but due to the superchargers setup, it cools the charge after the supercharger?
I think I'm a little confused as well. Oh well, we'll be educated soon enough.

 

An aftercooler is an intercooler.

 

aftercoolers for superchargers like how intercoolers for turbos,
am i right .......
oh well for the 100k thing i havent see any with the orginal engine

 

I wouldnt spend your money on the radiator just yet, there are more options for better power for $450.

 

...explain to me how a radiator makes you any amount of power.

 

It does not. No point in a new radiator.. Theres a point where too cool of an eng can start to lose power...

 

How often does your 8 run cold? Maybe it's just because I'm in the effing desert, but mine's pretty much consistantly running warmer than I'd like it to be.

Especially June-Sept.. I don't see a more effecient radiator, here and for me, at least, as a bad thing

 

Aftercooler is the original term for what we call an intercooler. It is used to cool the charge air after it has been compressed (which heats it up).

It doesn't make a difference if it is on a turbo-supercharged engine, or on a mechanically-supercharged engine.

The term intercooler was coined in the aero industry, as they had multi-stage supercharger compressors, and they ran the heated up air coming out of one stage through a cooler, before it went into the second compressor. Therefore, it was "inter" cooled - i.e. intermediate cooling between compressor stages.

With time, the term intercooler has taken on what we now see - a device that cools the charge after it has been compressed, before it enters the engine.

So - an aftercooler and an intercooler are really the same thing.

All of this has nothing to do with the radiator in question, as this is a device for removing heat from the engine's cooling water. A bigger one won't give you more power just cause it flows more air. And if it is too good, the thermostat will close off, ensuring then engine does get up to the correct temperature.

BTW - The PWR radiators are made here in Australia The PW is for Paul Wheel, one of our premier V8 category drivers.

http://www.v8supercar.com.au/teams/t...?ind=M&tid=154

Cheers,
Hymee.

 

hmm this might be a stupid question, how come supercharged cars use smaller intercoolers than turbocharged ones? I've seen a hks supercharged 350z the intercooler is like 1/3 of the size of other ones.

 

Was it an air-air intercooler, or a water-air?