I took my car out for the first time in a while, and today got damned hot here.....it was around 105 when I got off work. My car felt like it had about 100 less hp. It is weather/conditions like this that the shortcomings of the rotary and its inherent lack of torque that make me glad my car is NOT a daily driver!

Piston engines....sometimes you GOTTA love 'em!

 

Hope you got the fan mod. Those babies should be spinning all the time.

 

That old axiom is true - there is no replacement for displacement. (although density altitude does affect piston engines equally, more cubic inches do help to lessen the "effect", but then again, so does turbocharging!) I guess we can only expect so much from 1300 cc's. I'll bet it never gets 105 in Hiroshima.

 

No bitchin'! Rotaries are superior where it counts.

 

I didn't know Kansas summers were that bad.
Almost as bad as Palm Springs, CA.

I hope it's "dry heat".

 

Only when it comes to rebuilding and power to weight ratio. Other than that they generally suck the big one. That's why everyone is not driving them - hopefully the Kansei engineers have finally figured it all out with the RX8! Can't wait to see a blower or turbo on one of those suckers........

 

Jesus why did you get an rx7 then man if you feel that way? Anyways, yeah I hear that. 105 Here in Texas stuck in traffic both ways to work today WHILE I'am working air pockets out of my new radiator. Turning on the heater so it levels out sucks when you not moving in traffic. But hey I should have took the maro to work instead. Having A/C while stuck in traffic NOT even coming close to over heating. Yup I hear ya!

 

Yeah, but it ONCE got quite a bit hotter in Hiroshima....heheheheheheh!

 

Just because something's not perfect doesn't mean it's not appealing

Besides, there are many reasons to want an RX-7 besides the engine.

 

St. Louis aint no joke lately either... I'm afraid to drive... Even with the Koyo and the fan mod.....

 

I was under the influence of crack cocaine and booze when I bought my Rex. I gotta quit one or the other or it will kill me............

 

 

 

Come to Miami. It was like90 degrees and the heat index was around 105-110 today with 85% humidity.

You can almost breathe the water in the air

 

[QUOTE]Originally posted by Flybye
[B]Come to Miami. It was like90 degrees and the heat index was around 105-110 today with 85% humidity.

OMG.........it was 77 and 25% today in Vail, CO. The only good thing about Miami when it is that hot is the SWEATY women............

Joke time! What is the definition of a perfect mountain woman?

She is 3 feet tall, no teeth and has a flat head so you can rest your beer on it!

 

Im sure that with an automatic trans, stock radiator and puny stock intercooler your car might have issues in the heat.

With a 5 speed and an upgraded intercooler & radiator you will find it is not so bad.

I have tracked my car in 103 & 105 degree weather.
It was not that bad but I won't make a habit of it.
I just did not like the high coolant temps and that my transmission got a little hard to shift.

However, on the street I don't see 105 degrees as a real problem. It just means you need to run the AC.

Just follow the advice on this forum and do the reliability mods.

 

No....no thanks.....that friggin' humidity is what REALLY sucks!

I spent some time in New Orleans and just about melted to a puddle of goo.......yeechhhhh!

 

Driving in the heat and humidity is no problem. It's working in it that sucks.

 

you guys ever been to tejas? i think it redefines the word hot.....i've been here for four years and i don't think i will ever get used to it....

 

There's only 2 kinds of tempetures in Texas.

1. Hot
2. God damn ******* hot!

I'am used to it as long as I get a breeze. Also I can't stand humidty, I can take 115 deg. days as long as the humidty is low. No coastal living for me.

 

I'm kind of glad to hear I'm not the only one . I've been freaking out since getting my car back the other week after the rebuild.

It's really hot today in Florida but I got the Fans going, a brand new Fluidyne radiatior, Water wetter in the mix and my PowerFC is showing temps ranging from 103-115. (Goes up to 120 after the TurboTimer kicks off). Yeah, I use my A/C but is this normal. At best, after some time I get 100 c on the interstate/causeways.

I'm still thinking something is wrong but since I've been blinded with the stock Temp gauge for all these years until the FC , I don't have any true comparisons.

 

Well keep checking your fluid if you just recently changed the radiator, you still might have air pockets.

 

I hope you're not seeing 115 while driving it, that is pretty damn hot! Driving around here in Phoenix when it is 105-110 outside my PFC will get up to 105 when slowly driving in traffic but on the open highway it will get back down to around 95. This is what I am seeing with a Koyo radiator, 25/75 coolant/water mix and a bottle of water wetter.

 

Not typical but it has happened (there was a pressure leak that was fixed). I start looking to pull over 110. Ios have not seen it so bad since I had a problem fixed but that's been like 2 days.

But today it did get up to 110 while driving. It wa s probably 100 outside when it happened. It stayed there but after turning it off and the Turbo Timer went off, it did climb up to 120.

Amzaingly (actually not so amazingly), the stock water temp gauge barely flinched. A tad above the mid mark.
...

I'm getting pretty disgusted with overheating. That's what blew it to begin with and I've taken *all * precautions (except put on the Scoot hood which I'm waiting on other parts and shouldn't make but a slight difference)....DP, Fluidyne rad . water wetter, aluminum AST, supposedly upgraded radiator hoses, battery is in bac, lots of space, even stayed with a SMIC albeit a large one.

 

DavidDeco,

It looks like you are seeing relatively high temps for street driving.

Do your turbos spend most of their time in the "spooled up" mode when you are behind the wheel? I have found that somehow the gas pedal is mysteriously linked to the temp guage. If you are an enthusiastic driver, then the temps you are seeing are typical (IMHO) under those conditions in hot weather.

That is why Mazda made the temp guage non-linear. It is definetly shocking to see how much the coolant temps vary under load. They did not want you to really know about anything untill temps started getting above 230.

Since you are seeing such high temps would you be interested in trying out Evans Coolant and seeing if it makes a difference in your temps? You would make a very good test case for evaluation of Evans. At least you can take some comfort knowing that you will be safe from boil over.

I would be willing to donate a gallon of the stuff to your cause if you are interested.

Of course as Street King said you may have air pockets.
Do you check the coolant level in the filler neck (above T-stat housing) before & after driving (when cool) to see if it stays full or needs topping off?