whoa boy--Mazda is really counting on that 8 yr 100K warranty to solve all engine issues for the early model 8's. we will die nd go away.
olddragger

 

I installed your water pump yesterday Paul. I like what it does for the cooling. The car still gets warm. But it drops temps like a rock when you get moving. A lot faster than the stock water pump.
Now your pump in combo with the BHR radiator and I should be good to go.

I went to the dealer and I am not allowed to see the messages from MAZDA about there decision. I am still going to make that phone call though.

 

on the bright side, you now have legal rights to file a lawsuit against stop and go traffic... -shrug-

 

What do you think the phone call is about.

 

Did Mazda not install the 2nd oil cooler already...that should have been a no brainer.

I can't believe there fix is to "quit driving the car"

I'd like to see that in writing

 

^^ yeah no kidding.... if you were to sue Mazda based on that "fix" it could get pretty big, in payoff to shut up, lol

 

Maybe a class action???

 

Being the type of person that you are, it would be nice if your 'dealer' would offer you a steal of a deal on an 09 and then perhaps your 'dealer' could offer to install a second cooler as a 'courtesy'. Mazda North America would not directly have to be involved . That's what I would do if I were them. Solving tough problems is my job and that includes considering legal issues and ramifications.

You deserve for this to be rectified in a manner satisfying to you.

Paul.

 

Paul, second coolers do not solve the problem. The over heating problem is prevalent among all desert 8s. Here in Vegas, everyone who own an 8 has a problem with the heat, some more than others. Most of the problems are very short term with the car returning to acceptable limits quickly. Some like mine do not stop at a reasonable temperature but keep going until it causes a problem. That is Erick's problem also. It's a shame that we are forced to add extra cooling items to a stock car such as Erick's. They tell us it's our driving habits, I own 4 vehicles and my 8 is the only one that overheats in the summer.

 

I'm not suggesting that the 2nd cooler is the magic pill. It's one of the items that should be part of one's arsenal in that climate. The 09s have a better water pump and the coolers have changed as well. I'm suggesting that Mazda can creatively make this man happy.

Paul.

 

Paul ,, my dealershp has done a stellar job in just getting Mazda to recognize this issue. (To a degree). Without Berge Mazda I would more than likely still be beating my head against the wall. Not that I've stopped. I can not say enough good things about them. How many dealers out there would have done what they have done.
Now we go the other way with the situation. Installing your water pump is step one, next it's the BHR radiator.
Step three is make the phone call, which I will do later today, just to get the ball rolling around.

 

the 2009 auto rx8 still has only one oil cooler.
Guys--i firmly believe that the a/c condensor is a major source of yall's temp issues. Yall HAVE to have a/c, but i would not only agree with the Radiator upgrade but i would also suggest strongly a secondary radiator place AWAY from the other exchangers with a fan. Mounted before the a/c condensor. I would also suggest strongly a 180F thermostat so that full flow would continue at all times(basically). Yall's coolant bypass needs to be closed to do that.
I have done all of the above and the difference is profound.
I used a 21 x 7 inch trans cooler with 5/8 lines from Summit racing. Open fin type so air flow to the rearmost exchangers are not really blocked. I fed it with the return heater hose. I mounted mine approx 2 inches back of the front of the bumper support.
I have posted a 180F barrel type(highly recommended for use with a high performance water pump) thermostat thread--some of you have seen this. Others may not be aware.
I would be glad to help anyway I can now that Mazda has shown some true colors concerning this issue.
olddragger

 

can you be more specific about the hose routing you did please ....

 

simple ---take the heater hose that is returning the engine coolant to the engine (remove the little restrictor that is inside that hose--its a small brass plug) and use it to feed the secondary radiator. Then use the s rad "out" hose to return the coolant back to the engine. Reattach it to the thermostat housing like the oridginal heater hose.
The hoses have run to run through the side of the radiator/mount. be sure to reseal that area afterward.
olddragger

 

don't worry boys, the Nitrous is going to cool the engine down.

 

Don't do it this way.
Removing the restrictor decreases flow to the regular rad by increasing it through the cabin heater core. It a hot place, the last thing you want to do is introduce more hot water into the cabin, anyway.
If you are going to add a second radiator, use the line to the bottom of the separator tank.

 

wouldnt the upgraded water pump handle the need for the increased flow?
also remember that the increased flow through the heater is NOW going to a radiator also.
So far no probs and it sure has made a difference.
The source you listed is a good idea, bears some thought.
thanks
olddragger

 

Point taken.

 

Why do we have to help Mazda to solve these problems ? Stock car should never overheat like that no matter what. Dude if a car cant handle Stop & Go Traffic. Why selling it ?

This is Ridiculous

 

^^^ agreed

 

who is using MM's logon ?

 

This is my main issue. Why am I (and many others) having to engineer a better cooling system for the AT and MT RX-8's in this hot environment? This is an issue that should not have come up at all. This is something that should have been done before production and sales.
I wish they'd put me on the payroll on as a cooling system engineer.

 

It's even more sad when you consider the horrendous problems they experienced with the previous RX7's notoriously insufficient cooling system. You'd have thought that they would have overbuilt the **** out of RX8's cooling system. :shrug: 2 items stick out like sore thumbs. First, leaving off the 2nd oil cooler is mind-boggling. Second, they go to the trouble to design fender vents -- but then make them non (or barely) functional. Failure to adequately test environmental extremes is a bush-league mistake for a car manufacturer.

 

easy: how's she running now?

 

What I thought they upgraded to two in 2006.