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Koyo Radiator

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Old 06-18-2007 | 09:34 PM
  #26  
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shouldnt take that long at all... you have most of the parts out of the way...
Old 06-19-2007 | 09:13 AM
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Munch, do you have any more pics of your engine bay?
Old 06-20-2007 | 06:44 AM
  #28  
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is it easy to self install a rad?
Old 06-20-2007 | 06:49 AM
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yeah i mean it shouldnt be that bad... just make sure you drain the system first
Old 06-20-2007 | 11:21 AM
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Originally Posted by california style
is it easy to self install a rad?

It's relatively easy...but a PIA. You need to remove the undertray..and then I found it easier without the intake and battery and stuff.

Not difficult....but time consuming
Old 06-24-2007 | 05:45 AM
  #31  
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so basically, front bumper off, undertray off, then intake and batt out?
Old 06-24-2007 | 06:50 AM
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Originally Posted by california style
so basically, front bumper off, undertray off, then intake and batt out?
Shop manual is your friend.
Old 06-24-2007 | 11:17 PM
  #33  
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Took me a few hours. because some parts is a *BITCH* to pull them apart.
Old 06-25-2007 | 05:03 PM
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It might be more trouble than it's worth. Don't forget you have two heat exchangers that are currently sitting in front of your stock radiator which will add some PITAness (tm) to the job.

The intercooler should provide you enough extra cooling while you're driving around during the day that you really shouldn't worry about overheating. This thing is always working, regardless of whether or not you are under boost. If you bought the radiator you should send it back and save your money.

As far as adding a turbo is concerned. If you really want a bunch more HP, you're going to need a lot more work done on your car than upgrade the radiator to handle that amount of power. Just wait a few months and get the 8psi pulley/tune and you'll be making close to 300 rwhp... that's enough for me.
Old 06-25-2007 | 05:08 PM
  #35  
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LOL !!!!

alright, I dont think you have any idea what you're talking about buddy.

Stock cooler sure is good enough for regular street driving, but for people who track/autoX, or simply just wanna go *fast* all the time. stock cooler not going to cut it.

I had mad water boiling problems with my stock cooler before, and yes Im one of those *I wanna go fast* kind of people. switched to koyo rad couldnt be happier.

The job is not hard at all, might take a bit longer for first timer. worst part is just the hose, its really hard to get them off.

Last edited by nycgps; 06-25-2007 at 05:10 PM.
Old 06-25-2007 | 05:11 PM
  #36  
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Originally Posted by nycgps
LOL !!!!

alright, I dont think you have any idea what you're talking about buddy.
Specifically point out what...cause they both have the pettit kit and the kit also installs a pair of heat exchangers in front of your stock rad...

So please be more specific so I can properly address your statement...

=)

EDIT: Thanks...ninja-edit skillet FTW
Old 06-25-2007 | 05:20 PM
  #37  
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Originally Posted by Bastage
The intercooler should provide you enough extra cooling while you're driving around during the day that you really shouldn't worry about overheating.
Uh, charge cooling has little to no positive effect on coolant temps.
In fact, a cooler intake charge under load will put more heat into the cooling system because the denser charge will yield greater heat output from the combustion process (probably a marginal difference, though).
Especially the air/water type exchanger which will saturate and act like an air heater in front of the rad most of the time, not to mention the blocking of positive airflow through the rad.
Old 06-25-2007 | 05:22 PM
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Originally Posted by nycgps
LOL !!!!

alright, I dont think you have any idea what you're talking about buddy.

Stock cooler sure is good enough for regular street driving, but for people who track/autoX, or simply just wanna go *fast* all the time. stock cooler not going to cut it.

I had mad water boiling problems with my stock cooler before, and yes Im one of those *I wanna go fast* kind of people. switched to koyo rad couldnt be happier.

The job is not hard at all, might take a bit longer for first timer. worst part is just the hose, its really hard to get them off.
Hope you're not referring to my post, but if you are, read it again. We both have the same SC setup, with the air/liquid intercooler, which works VERY well.
Old 06-25-2007 | 05:26 PM
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Originally Posted by MazdaManiac
Uh, charge cooling has little to no positive effect on coolant temps.
In fact, a cooler intake charge under load will put more heat into the cooling system because the denser charge will yield greater heat output from the combustion process (probably a marginal difference, though).
Especially the air/water type exchanger which will saturate and act like an air heater in front of the rad most of the time, not to mention the blocking of positive airflow through the rad.
This is good to know, but in over a month of driving around here in Florida (and driving hard) I have yet to have to add any fluid to the radiator or the intercooler. Which leads me to believe that the car is running plenty cool, considering some days the ambient temps have reached 90+ consistently over the past couple of weeks.
Old 06-25-2007 | 05:31 PM
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Originally Posted by Bastage
This is good to know, but in over a month of driving around here in Florida (and driving hard) I have yet to have to add any fluid to the radiator or the intercooler. Which leads me to believe that the car is running plenty cool, considering some days the ambient temps have reached 90+ consistently over the past couple of weeks.
I was referring to your post.

Let the counter start ! I want to know how long your motor will last.

and when it blows up, please dont blame Mazda.
Old 06-25-2007 | 05:32 PM
  #41  
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1100 smile-filled miles and counting
Old 06-25-2007 | 05:38 PM
  #42  
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Originally Posted by Bastage
This is good to know, but in over a month of driving around here in Florida (and driving hard) I have yet to have to add any fluid to the radiator or the intercooler.
Which means nothing.

Originally Posted by Bastage
Which leads me to believe that the car is running plenty cool, considering some days the ambient temps have reached 90+ consistently over the past couple of weeks.
Bad conclusion. You may be running cool, but this is not a method of determining that.
Old 06-25-2007 | 05:41 PM
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Originally Posted by eviltwinkie
Specifically point out what...cause they both have the pettit kit and the kit also installs a pair of heat exchangers in front of your stock rad...

So please be more specific so I can properly address your statement...

=)

EDIT: Thanks...ninja-edit skillet FTW
my point was that, stock setup already running hot hot hot hot hot hot.

I know that the pettit kit has heat exchangers, but is it really enough to cool it down ?

We will find out.

Originally Posted by Bastage
1100 smile-filled miles and counting
That does not mean its running ok. Sure its running now. but usually mechanical breakdown = owner's fault.

You cannot have cancer in 1 day, it builds up and kill u out of nowhere.

Last edited by nycgps; 06-25-2007 at 05:43 PM.
Old 06-25-2007 | 05:41 PM
  #44  
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Originally Posted by MazdaManiac
Which means nothing.



Bad conclusion. You may be running cool, but this is not a method of determining that.
What if I throw in the fact that my engine temp meter has not gone any higher than it did before I went FI? That enough of an indicator?
Old 06-25-2007 | 05:43 PM
  #45  
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Originally Posted by Bastage
What if I throw in the fact that my engine temp meter has not gone any higher than it did before I went FI? That enough of an indicator?
engine temp meter ?

Dont get me wrong, Im saying this for your own good. Cuz seriously, i dont want you to have any problems down the road you know.
Old 06-25-2007 | 05:45 PM
  #46  
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Originally Posted by Bastage
What if I throw in the fact that my engine temp meter has not gone any higher than it did before I went FI? That enough of an indicator?
Nope. The temp gauge doesn't even start to move until it is over 230°F.
The OEM temp range is already dangerously hot as it is shipped (the OE thermostat doesn't even open all the way until 205°F!), so by the time you have gauge deflection, you are already saturated.
Optimal power and engine longevity is found between 185°F and 205°F, give or take 5°F.
Old 06-25-2007 | 05:52 PM
  #47  
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Originally Posted by nycgps
engine temp meter ?

Dont get me wrong, Im saying this for your own good. Cuz seriously, i dont want you to have any problems down the road you know.
Not getting you wrong. Otherwise I would have been an ******* in my responses. Just trying to learn as much as I can here.

Originally Posted by MazdaManiac
Nope. The temp gauge doesn't even start to move until it is over 230°F.
The OEM temp range is already dangerously hot as it is shipped (the OE thermostat doesn't even open all the way until 205°F!), so by the time you have gauge deflection, you are already saturated.
Optimal power and engine longevity is found between 185°F and 205°F, give or take 5°F.
So you're saying the stock temp gauge is worthless and the only real way to know what's going on is to get an aftermarket temp gauge?
Old 06-25-2007 | 05:55 PM
  #48  
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Originally Posted by Bastage
Not getting you wrong. Otherwise I would have been an ******* in my responses. Just trying to learn as much as I can here.



So you're saying the stock temp gauge is worthless and the only real way to know what's going on is to get an aftermarket temp gauge?
errr ..... You dont have one ?!?!?!?!?

GO GET ONE now before its too late.

the stock is junk and when it really *moves more than middle*, your motor is already running way too hot.

Even I am going to get one, and Im running stock motor with Koyo Radiator.

I like Mechanical ones better than electric. each of their own I guess, oh get a good one tho, dont go for cheap stuff. and while you're at it you might want to upgrade your Radiator and Radiator hose at the same time.
Old 06-25-2007 | 05:55 PM
  #49  
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The OE gauge is there to tell you that you've already crossed into dangerous territory and have mere seconds before engine damage. Especially if you live in a hot climate. The difference between "overheating" and "engine death" is just 20°F of coolant temp and in an arid environment, there is a huge difference in cooling efficiency from 100°F to 110°F ambient.

Either an aftermarket temp gauge, or run a CAN scanner on your in-car PC would be useful.
Old 06-25-2007 | 05:57 PM
  #50  
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Bastage - you really can't know if you have an overheating problem unless you have a proper temp gauge installed . You are probably OK for cruising around town with the odd boosted run but give it stick for any length of time & I doubt your stock cooling system would cope . If you ever take it to the track I would advise fitting a temp guage and watch it closely .

edit : not too closely though - important to stay on the track

Last edited by Brettus; 06-25-2007 at 06:10 PM.


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