I guess I will take alook at them and then decide which one i like better. Anything is better then the stack one I have now.

I bought a Mazda Competition radiator from SR a couple years ago. They were actually very courteous and accomodating. The radiator seemed to perform well in the hot south Florida summers, but it sprang a leak at one of the corners late last year for no apparent reason. I ended up buying a PWR, and so far so good. It certainly looked nicer than the Mazda Comp...it was polished, and it had no annoying lip along the side for me to have to cut away so my Pettit intake could breath. Again, it seems to be performing up to snuff, but I don't have any hard evidence of superiority. It was one of the lower-priced aftermarket radiators I saw, but I have heard good things about PWR. I think they're from Australia perhaps, and have been making radiators and intercoolers for RX-7s for a while, or so I'm told.



jds

Do 3rd gens realy need a different radiator that bad? I cant get my car before to even get hot to a good temp but i am highly modified now for next summer so do you think i should get 1..........

insurance...

No but the plastic ones are small

As long as your stock one has never given you any problems I wouldnt worry about it.

They're small, and they're plastic! I first upgraded because the plastic...like every other bit of plastic in the engine bay...got brittle and started leaking. I wasn't having any cooling problems with the stocker either...the better cooling capacity of the upgrades added a nice safety margin though.



Of course, as I said before, my first aluminum radiator started leaking too. So much for my reason for avoiding plastic!



jds

I took your post into consideration and tried calling sr motorsports again for some tech help with their radiator, now this is the 2nd time i've contacted them via telephone to get information on this... my problem is that the hole in the bottom side of the radiator where the S4 normally has the thermoswitch on the stock radiator, is a different size than the stock radiator. So the thermoswitch will not go in, and I have yet to find any pipe fitting adapter or plug that will thread into the hole. I've asked them to provide the specs on the hole twice now via telephone and both times I get useless information along the lines of "it's probably metric, oh, they changed it sometimes. Yeah, some people use an adapter. Oh, try some teflon paste. Yeah, it's probably tapered." NEVER a straight answer, I don't understand, if they sell this radiator, they should know exactly what type of thread this is so I can go to a plumbing store or a hardware store and find exactly what I need. They don't know their products intimately like one would expect which is quite a disappointment, especially considering the cost of their performance radiator (almost $600).





All I want from them is something like: It's M12 1.25 metric tapered plug. The guy told me on the phone to just try some metric bolts. WTF?! it's tapered! and I have yet to find a local auto parts store or hardware store that carries pipe thread plugs in metric, they carry NPT and MPT but the smallest they go is 1/4" in the stores and that is too large for the hole. It's possible the hole isnt even tapped right and maybe 1/4" NPT is what is supposed to go in, but I can't even be sure because they apparently can't tell me what it should be.



so because of this experience i cannot recommend sr motorsports to any of you fellow rotorheads... https://www.nopistons.com/forums/pub...IR#>/angry.png



sorry for this rant-like post but I spent all day visiting every hardware source in the area looking for fittings that might work, bought enough to allocate a drawer for them and none are going in right. I ordered some identification kit from summit hopefully it will help. I have a feeling it's a fitting i'll have to order online from wherever they carry weird metric plugs.

the one and only reason I changed my radaiator was because I have heard nightmare stories of how the stock one broke where the plastic end tank met the radiator ...rupturing and spilling out coolant... not the best thing in the world for a Hot ass rotary engine.



like Amp said...Insurance. https://www.nopistons.com/forums/pub...IR#>/boink.gif

I think that if you have the money to do it then its a good i dea. Plus thats just one more thing to talk about when people ask about your car. I still have my stock one and have no over heating problem in southern California. I have read in a lot of web pages that you should replace it. I just got my RX-7 2 months ago so I have been looking at what to do before really modifying to much and it was recommended to replace it. Along with a lot of other cheap stock parts but thats another topic. I think I will go start that topic now.