We all know heat is a big factor as to how long our cars last. So i was wondeing what kind of temps (coolant, oil) people see, and what cooling mods they have to help with this problem.

 

operating temp should be around 221 F. sometimes lower. upgrade the radiator, seal around it, aftermarket temp gauge. better intercooler. there are many threads on this to get some testimonials. this is what I have experienced. hope it helps.

 

When my car IS running, it's not now, I usually see 85-86 C on the PFC. I have a Koyo Radiator, Evans NPG+ Coolant and my fans are set to turn on at 86 C(Datalogit).

 

in the fall/winter i normally see around 85c-88c, in the summer my normal oper. temp is about 88c it gets up to 90c but then the fans kicks on.
i have mazda competiton rad.

 

my car runs around 85-87 degrees (winter)

Im using a stock radiator with M2 large smic and usually have the heat on full blast, plan on upgrading to a koyo intercooler when summer comes around

 

i have a koyo radiator and here in Sacramento while I am driving i see around 175F which is around 80C, but luckily i have no ac and i can turn on the fans wen it gets hot and with the fan on, i usually see it go down to 171F which is around 77C, i usually don't let my temp run pass 186F which is 85C

 

People drop in a Koyo, Fluidyne, PWR, etc. to replace the stock radiator because of cracked end tanks, leaks, or as preventative maintenance regarding the former. An aftermarket radiator does NOT change your operating temps.

 

~190F on the freeway, and with the A/C on @ 1+. ~200F in the city in smooth traffic, and up to 220F in stop-and-go traffic, however, I always turn the A/C on when it gets to 210F (during the latter).

Common cooling mods are a manual fan switch and Miata Thermoswitch.

 

80C around town in traffic... bout 85-90C when beating on it during an autocross or track day.

 

84C is my regular temp, up to 90C when boosting. This is with a huge custom rad, FMIC, and scoot hood.

 

winter..80-85c. i have a 180 stat, stock rad, apexi fmic with a single. summer time 84-88c.

brandon

 

Morning - 83ºC - 85ºC
Afternoon - 85ºC - 91ºC
Night time and early morning doing you know what =) - 84ºC - 88ºC

These are the usual conditions, though recently I have been hitting 93ºC during the afternoon in stop and go traffic. I found green gunky crap on my overflow stick. A flush and clean is in progress right now.

Jeremy

 

my coolant temps are 180 normally driving around, 200-210 when boosting/going up hill after a 2-3 mile up hill at a 30-35 degree angle. coolant temps come back down to 180 with in a block after turning around and going down hill though.

ambiant temp is alwyas 75-80 degrees here in Hawaii

mods i have are air ducts (to force more air thru radiator) as well as the fan mod where I can control all 3 speeds of the fans. i usually have it on low which driving around town and turn it on high when cooling down after a hard run. Im also running about a 20% water to coolant ratio with just green coolant and no waterwetter. (im my experience, with 3 cars, waterwetter doesn't do jack!) i do have a SMIC as well as the stock radiator.


as far as "operating temp should be around 221 F." I believe this is totally wrong! sure the fans do automatically turn on at ~221F but personnaly i like to keep it at 180. i would suggest you try to keep your water temps below 210F when just driving around town. unless your racing, your temps should really not go above 210F.

 

180 normal driving but on hot days in traffic it goes 190 and i turn on the fan mod switch and goes back to 180.

 

Yep, like everyone else, 80's or mid 90's max in summper. Mods allow better air flow and control of fans but still on stock radiator.

 

for me i actually did some experimenting with the cooling system....
when the car was completely stock (streetported motor but stock coolant system) i was getting like 85-93 without the Ac on... then sometimes heading uphill, i would get 95-97...

then i got a blitz 4 Row FMIC and a KOYO radiator. at that time, i didnt have the undertray on so all the air was hitting the ground and not the radiator. i was getting from 83-90 on freeway and 87 - 95 on the streets...

then, with the undertray on the car and setting the low speed fans to come on at 85 and high speed at 90, my temps never pass 87!! even in stop and go traffic, it will turn the fans on at 85 and climb to 87 and start heading down!!

-Roman

 

hey man just watch it when its 90+ outside, i wanna see your temps then

trust me they will break 100c goin uphill

that what i was getting on my apexi fmic with koyo 106c the most

but for now the v mount is superior, right now the highest ive seen my temp while going uphill was 82c, 85c around town

cant wait till summer and really test it

ill keep ya posted

mike

 

What v mount kit are you runnig and is your hood vented?

 

The single thing that I have done to the FD to alleviate temps on the road course (never had problems on the street) is completely removing my A/C.

 

I was wondering... then what is so good about having an all alluminum radiator??? Koyo..mazda competition.... or whatever..... what is so good about it compared to stock when the temps are going to be the same/??

 

As has already been posted, the stock plastice end tanks weaken and burst over time. The aluminum ones......don't. Also, they have a greater capacity than the thin stock rad. Mazda went overboard with the weight savings when it you look at the intercooler and rad, in my opinion.