I hauled *** to work this morning, opened up my hood when I got there and my radiator had a nice crack in the top of it. I've been using the na radiator, and seeing as how I have to get another one it might as well be a TII one. What I'm asking is the TII radiator any better than the na, want to know if I should just get a nice aftermarket one if it's not.

Thanks, Tony

 

Don't bother with the oem radiator you can pick up an aftermarket performance radiator that's all metal and performs better for less.
My original radiator split it's top 2 months ago, I bought a 2 pass radiator that was about $240, my local Mazda dealer wanted $1200 for an OEM radiator.
Also I think the N/A and TII radiator are the same part #.

 

yea they are the same, i would go with a koyo for $300-315

 

yea, i got my Koyo for ~$328 shipped. if youre tight for money, i have an oem n/a radiator that i'll let go for cheap+shipping. i have no use for it. PM me if interested. otherwise, good luck.

 

http://www.hopupracing.com/koyoradiators.html
s4 $278
s5 $293

 

No they aren't. The N/A had a smaller radiator than the TII and the automatic. The TII/auto radiator are bigger and hold more coolant.

 

still I woundn't bother with the plastic top oem radiators

 

Thanks you guys,your help is much appreciated.

 

Go to this site: http://www.mazdaformance.com/rx7parts.htm

I believe you'll come to the conclusion that the turbo and non-turbo radiators are the same for a manual car.

But buy a KOYO. I have one and am going to buy another. One great radiator for cars in Texas or the Southwest. It makes a big difference in the summer.

 

No they arent the same. Were you aware that the turbo needs additional cooling on top of the engine? And that the auto trans needs additional cooling? Ever seen a 5 speed N/A radiator next to a TII/auto radiator? You can tell the difference just by looking at them. Heres a link and on page 4 read the differences between the two's capacity.
www.cochran-racing.com/FSM/s5/03_cooling_system.pdf

 

when getting a replacement they are the same, they don't offer turbo or n/a only S4 or S5

 

I was talking about factory because he asked if he should get a TII radiator or aftermarket.

 

Either way I think it's a moot point because he'd be better off with a Koyo or somesuch aftermarket all metal radiator.

 

Your wrong, all manuel cars turbo or not had the same rad. The auto rad is differnt. the extra capcity you see for the turbo is from the coolent going to the turbo. That "additonal cooling on top of the motor" you speak of is called an intercooler, and I assure you it doesnt contain coolent...


http://www.mazdatrix.com/b8.htm

 

Did you not read the link? Did you not notice the capacity differences?
Coolant capacity:
Turbo 9.2 qts
N/A 5 speed 7.7qts
I didn't pull this out of my *** people. Why are there people telling me I'm wrong on this one? Where's icemark when you need him? The radiators are thicker on the auto and TII. Are you trying to say that extra 1.5qts is chillin in the turbo itself? Wouldn't it make sense to make a higher capacity radiator when more coolant is needed?

 

though i dont know, i would assume its referring to the cooling SYSTEM's capacity, not the radiator.

 

yes and the turbo feed lines, and the extra coolent passages in the t2 block...

 

According to the parts fiche, the Turbos and 5-spd NA's use the same radiator (P/N N326-15-200C).

 

who cares the stock rad blows

 

literally

 

Sorry, but I own and work on both non-turbo and turboII 1987, RX-7's......and they are the same animal. Plus....look at the site I left a link to for the part numbers. By the way, a KOYO is an excellent replacement for the stock radiator. A true bolt in, no fabrication required install.

Also confirmed by an expert from another part of the planet in a post above.

 

How much have people been quoted for a stock oem replacement radiator?
My local Mazda dealer wanted $1200, I thinked I laughed in the guys face.