you have to understand that the mazda comp. radiators were and is still very expensive. When I bought mine, there was no fluidyne or koyo radiators for the rx7.

 

I have the M2 intake and M2 Smic, it requires lowering the Fluidyne.

About the Ron Davis our club had a GB on it awhile ago and a friend is going Vmount if you choose to go that way PM me.

 

Hey DRADON03,

Yes I'm interested in the Mazdacomp radiator, but I cannot PM or e-mail you because of the restrictions placed on newbies to this list. Would you please e-mail me!

 

The Greddy does not use the factory duct. You NEED a Pettit duct (or similar) to cover the entire surface area.

 

M2 large and PWR radiator here. no fitment issues.

if i recall, i believe m2 had pwr make their radiators back in the day.

 

There were some great recommendations in this thread, and I wanted to compare these with what was published in the Sport Compact Car series of articles published back in 98-00 on their FD project. Another reason for this was that back then they used mostly M2 parts and this is the bin of parts I have.

The article says that Brian Richards (x-M2 proprietor) installed in the SCC project a Mazda Competition aftermarket radiator manufactured by Anthony Woodford Racing (AWR). This all-aluminum replacement has 50% more capacity than the stock unit. The article goes on to say that some fitting was required, but that Woodford documented all the necessary adjustments/modifications and will incorporate these changes in the redesign, which will allow the Mazda Competition radiator to install per instructions in the Rx7 workshop manual.

So, it seems that Mazda Competition radiator should have no fitment issues, but the post suggests that these are rather pricey. From my reading, I have a slightly different take. The Mazda Competition (Ron Davis), back in 99 timeframe, built the cores, but the radiator was put together by AWR. I don't think AWR is the same as PWR. Anyhow, a quick check on the Internet shows that AWR is still around and offers the FD radiator for $505.

I don't have figures to show how the AWR radiator compares in cooling performance with the Koyo N-flow, but IMO avoiding fitment problems may be worth the extra $100.

 

^ I agree with your opinion and can tell you that you would have even more fitment issues with the N-flow since it is thicker than the regular Koyo. I was unable to mount the regular Koyo with the M2 Large fwiw. When I searched on that topic, I found a bunch of threads that proved I was not alone with those fitment issues.

I now run a custom v-mount with my old Koyo rad and the M2 Large IC.

 

post pics of your set up!

 

vr2cym, I think @ 505 I would go for it. It will cost me more to get it to you because I am in Canada.

Go with the Mazdacomp and you won't have any regrets. AWR distributes RonDavis...