Mazsport Cooling mod - does it work ?
 

Was about to send off an order to purchase this mod but before I did I thought I would do some testing .
With scanalyser hooked up I went for a drive over the hill . This is a steep hill that I take mostly in 3rd gear at around 6000 rpm . Day was hot - 28deg C (82F) .
with stock fan control I'm seeing cooling temps up as high as 101C (214F) .

So then I turn the fans on manually so they stay on (at slow speed) and try it again .
From what I've read here about the Mazsport Mod it turn the fans on at slow speed at a lower temp so turning them on and leaving them on should yeild the same result - right ?
I was expecting to see a dramatic improvement as many here have the mod & say it works .
To my surprise I found no difference - still goes up to 101C just as quick .

Have I missed something about how the mod works or does the mod only work for more moderate conditions ?

mazsport mod turns both fans on at full speed at around 190 degrees. I think they stay on till temp is 180 degrees.

Just lazy driving on the highway, and some stop and go traffic, I'll easily reach 205 degree temps (when stock), with the mod installed, temps are usually about 185.

No question that it works.

this is what I was confused about - I thought Scott said somewhere that it only operated the first stage of cooling (both on slow)

Is this 'mod' equivalent to getting a FC thermoswitch for the FD? FC turns on fans @ 95 deg C FD @ 108 deg C. Cost is ~$50.00

Has anyone researched if there is an alternate thermoswitch for the RX-8? Or even converting as was done previously with the miata thermoswitch to FD?

Laters!
Edgardo

Details on FC thermoswitch for FD:
http://www.rx7club.com/showthread.php?t=447606

Trust me, it does not turn the fans on slow speed :)

The only problem with it is that my car seems unable to keep up with the current draw. I ended up plugging in only one of the cooling fan fuses, and using a stock one for the other. My idle problems (stalling due to rpm dropping and voltage dropping) have almost gone away. Cooling is still better than stock, but not as nice as it was with both fans operating on full. I do not this this problem is CAUSED by the cooling mod, but rather a side effect of something else, such as the batt/alternator being unable to keep up.

thanks for that mysql101

Does anyone else with the mod has the same problem as Mysql101? ^^

There are people with idle problems without this mod, so ....

For example: http://flrx8club.net/forum/viewtopic.php?p=31218

I was one of the first people to have this installed. Works great! I'm rock-steady at 190* now and remember being right around 215* beforehand.

I've had this mod for some time now. Definitely works! My temps used to average around 212 deg. Now the temps usually between 170 and 180.

hmmm - just found this quote from Scott ..... CONFUSING !

did the cooler coolant temps also lower the oil temps any? we really need a 180 thermostat also.
olddragger

yeah, it might have higher settings. you don't want the engine too cool. Around 180 degrees is good.

btw, I can replicate the idle issue with just my headlights sometimes. So I'm very sure it's unrelated. This weekend I'll hook up a friend's 800 CCA batt to my car and test to see if it's just a batt problem. This is off topic, but anyone know if there's any issues with doing that (higher CCA batt)?

I just installed this mod 3 days ago on my 2004 Rx-8 and I must say this kit really does the car well. The A/C feels alot colder, the car turns on faster and after a drive the fans stay on for about 15 seconds after the car has been turned off. I would really recommend this mod.

well - I did some more testing - this time with the fans on full .
Same hill - slightly cooler day (26 deg C) . Found that The car stayed cooler for longer but still ended up at 101 deg C by the top of the hill .
My feeling - mod is not as great as I had been led to believe but does help up to a point .

This mod only makes the fans work more aggressively - coming on sooner (approx. 195F) and turning off later (approx 185F) to get maximum usefulness of the cooling capacity your stock radiator provides. It does NOT increase you radiator's maximum capacity to cool.

If you are pushing the car so hard (with hot temps) that you exceed the radiator's capacity, your engine will heat up eventually even with the fans turned on early. If you do this type of driving a lot and want to keep the water temps down, you are going to need a larger capacity radiator as well.

Install DIY?
 

ive searched the forum and couldnt find the install directions with pictures. does anyone have the link? i looked under durable cooling mods and the link is dead :crying:

no instructions on this site because it's on the mazsport site and he ships the mod with install directions too.

http://www.mazsport.net/store/instal...olfancntrl.htm

beers :beer:

it amounts to cutting your coolant line, putting the hardware in the cut line, plugging in the fuses and making sure it's grounded. Should take 15 minutes for a first time user.

Installed when this mod first came out. Running NA-hi-flow cat, RB intake and "No Prob in sunny FLA!

thanks, can anyone take a picture of how the finished install looks like to make sure i'm going to do the right thing XD! Thanks lot

here you go..

hope that covers it.. btw, the red wire has nothing to do with the mod.... pretend it is not there.

beers :beer:

I don't get how that works - the connection is not even in a line that flows water as far as I can see . Isn't that just the return tube to the header tank ?

wow the site is moving again...

pm coming..

beers:beer: