BEST COOLING MOD FOR MAZDA RX8 - Fan Control Kit
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- čas přidán 1. 09. 2018
- In this video, i find out what's causing my fan control kit not to work and my temperature drop down drastically!
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you should not need to change the thermostat out buddy, as if the coolant drops below the 76Deg of the Mishimoto thermostat then it will start to close again in order to maintain the correct operating temperature.
We have never had a issue with running these thermostats even in conjunction with the large Koyo Radiators.
Should just get MazdaEdit and change the fan cut in points in the factory PCM, no need for adding extra crap that can fail, you can also do other things like increase the OMP rate, timing, fuel maps and block CEL's, you should look in to it if you haven't already, well worth it.
Hay just installed mine today, with oem fans, radiatior and thermostat running betwen 82-90c the fans starts at 85-86c
Hey dude, just got my first 8 so learning as I go and your vids help an unbelievable amount..subbed, thanks and keep up the great content.
Thank you so much man, I'm very glad to hear that 😄 best of luck with your rx8 and enjoy it as much as possible! If you have any questions, feel free to ask anytime 👌
Now you've got it sorted i think its time i ordered mine and used this as a fitting guide.
Good video as always 👌
You're welcome bro! Let me know how it performs on yours 😊
Always a detailed video, keep it up!
Thanks man! will do 👌
I finally got the fan kit, shall install it tomorrow. Also I have installed the Mishimoto thermostat. Temp here reach 42 to 46 degrees centigrade in summers... Now tell me does everything works well or not... Should I install ?
What exactly are those connectors called that you replaced the wires with? So i can find some. Thnks
A transmission cooling mod would be a great video as the transmission runs super hot and effect performance
This is a good example of when OEM is better than AEM.
I know you can buy a plethora of hose connectors everywhere. But, where did you get the one you installed at 2:58. If the part is no longer available, what's the diameter?
Asking because I want to make this mod reversible in the winter.
Thanks!
Good job Man!
Well at least you fixed the problem. Well done.
Thanks man! It was quite a rewarding process
I personally think u should keep the aftermarket thermostat, and see if there's another way to get the fans to start working w/ a lower temperature. As some pointed out, the OEM thermostat doesn't open all the way until very late in the game, so your cooling efficiency will drop. The thermostat is like a door. It's triggered to open at one temperature, but the door doesn't open all the way until a certain temperature. The wider the door is opened, the more coolant can flow through the door. So the OEM thermostat won't allow for as much coolant to flow through it, therefore the coolant that actually gets cooled and reaches the radiator will be less in volume, if u get what I'm saying.
I just got a Mishimoto thermostat on mine, and I'm gonna get the fan temperatures changed at a tuning event hosted by my shop in a few weeks. I'm not 100% sure how they will do it though.
Where do i buy this kit???? I live in Puerto 🇵🇷 and is very hot out here i need this
OEM thermostat opens at 82c and fully opens at 95c so mazda sets the fan to operate at 97c is make sense. If the fan operates when the thermostat is not fully open, like 90c, the fan's motor will be overworked. The aftermarket thermostat opens at 76c and fully open like 88c, the fan should be set to operate like 90c. In my opinion, the problems you have are the fan operating too early and the fan won't stop operating when the temperature drops.
I agree, the fans should start at 86 and stop at 83. This would be optimal. Correct me if im worng. But this mod will come in handy when drifting. The reason im switching to the oem thermostat, is that after the koyo 53mm radiator install I fear temperatures will be too low for everyday driving, and the engine will wear out prematurely. What's your opinion on this?
By using 82c OEM thermostat and setting the fan starting at 86c, at 86c there is too little water coming out for the fan to remove the heat because the water is just coming out. In term of efficiency, it is very low and the fan's motor will prematurely broke from continuously keep the temperature less than 86c. You should let the the thermostat fully open first then start the fan. I don't know why your fan won't stop. In your video, I think the fan stoped because there was no water passing your sensor. Currently, I am using no thermostat at all and set the fan by controlling ECU to start at 88c and the fan auto-stop at 83c. This setting let my fan only works in traffic. If you are drifting a lot, I suggest you also change the oil cooler thermostat. rotaryperformance.com/products/oil-cooler-thermostat
I see, got it. So the problem is the fan not stopping on time. i think i need to start learning how to use mazda edit to modify my ecu. I think that as a drift spec, my current setup is ok, but as a daily driver, running between 76 and 85° C is not optimal for the engine, What do you think?
The oil cooler mod is definitely on my list. Been seeing temperatures on the track day go pretty high, and i can't stay on the track for a longer period.
Yeah, running between 76 and 86c is definitely not optimal for the engine. I think running between 85c to 95c in every condition is optimal for rotary engine. However in your case, you might need to run 80c to 90c in daily driving so that you can drifting in 90c to 95c depending on condition.
Beware if you'r planing to use 53mm radiator. The optimal thickness of the radiator is also need to consider depending on the speed of your car is traveling. The thicker the radiator, the more resistant for the air to pass through. In drifting condition, the car travels at low speed so there is low velocity of air pass through the radiator. You might need a bigger fan's motor to force the air through the radiator. Koyorad offers 2 sizes of RX-8 radiator. I don't know which one suits you more.
@@tananusin I went with the 53mm core one, the thicker radiator they have for the rx8. I'll see if mishimoto offers bigger fan motors, so I can upgrade my fans accordingly.
Glad you were able to get it figured out. I did end up relocating mine to the heater hose on the right side. In the process I actually broke off the male connectors on the adapter. I did the best I could to solder the wires on what little terminals I had left. Still doesn’t seem like the fans are turning on when they should. For me they are turning on at around 190f. At least that’s the temperature reading I’m getting from the app on my phone with the OBD2 reader. It still seems to be running cooler than it did before. Unless of course I start going up hill and it’s even worse with the AC on. Temps start climbing above 210. I replaced the cheap eBay aluminum radiator with a Koyo, and a new coolant bottle. I’m thinking maybe something with the oil cooling system is causing some heat problems as well.
Thanks man! Hmmm have you tried bleeding the cooling system again? I like to open the cap, let the car warm up, and them rev it to 9k rpm and hold it for 3 seconds. I do this 4 times. I noticed that in this process a lot of small air bubbles come out, and the coolant temperature dropped from 105 to 98°c when idling for long time.
But I always have my odb2 app open and carefully monitor temps.
I just put this kit on Friday and it's working more or less as I expected. Both fans come on between 185-190f which is a good 15 degrees sooner than stock. BUT - my fans turn OFF about 5 seconds after I take the key out after driving. This was true prior to installing the fan control kit also. Can't find any explanation as to why when everyone else complains their fans stay on too long!
@@AerinRavage mine also shut down after 5 seconds...
I know this is 5 years old, but my car is doing this exact thing. Did you ever figure out what the issue was? It's driving me crazy.
@@thehellkite I wish I could help but I honestly don’t remember
Where can i buy this nowadays?
Great video. Don't forget dielectric grease on the connector
Thank you very much! Wil do, thanks for the tip 😊
Yo I subbed….did you rebuild this same car yet at all and if you did, how many miles did the original engine make it?
Thanks man! Original engine rebuilt at 62.000km, currently i have 123.000km
Consider switching the water pump out for electric. The controller will manage heat much better, even with the car recently off. It will also properly control your fans.
Davies Craig in AUS makes some excellent kits. You'll need a water pump replacement adapter and belt change too. Some nice billet options.
They make an electric pump kit for the rx8? Or is it just a universal kit you make work
@@The_69_Club They make universal kits, but it works great with rotaries. Rob Dahm recently put one on his rotary Corvette. Vid is on his channel.
@@The_69_Club I should also mention that there are custom billet electric water pump housings that replace the stock water pump and housing. Those are rotary specific.
Great job
Thanks man 😄
Can you let me know how to direct a fan, which would switch on right when I put the ignition on acc... which relay to earth.. Need help quick
Here's your answer: czcams.com/video/lgGtDKEaO_s/video.html
This is definitely the cooling mod for an rx8 ! I have oil & coolant temps on mines and it really reduces temps maybe a little too much tough..my coolant temps are between 82-85c and oil temps are around 76-82c. Can low oil temps be harmful since carbon deposits do not burn off as much?
Ummm, Ik this was three years ago. But I don’t think that it will make a significant difference. Premixing with two stroke that cleans carbon will help!
Buying it now
Good luck bro! 👌
what app did u use to monitor your temp? and does it come with an obd2 ?
Obd2 doctor pro. No, you need to download it on google play
Ciao, non so se ti ricordi di me, ma alla fine l'ho presa! 😁 sapresti indicarmi dove acquistare la modifica per far partire prima le ventole? Grazie.
Ciao 😃 certamente. Ti do il link diretto di quello che ho preso io: www.rx8performance.com/products/cooling-fan-control-kit
Where can I get this mod for the fans looking around but can't find it
RX8performance.com
where did you get your fan kit from
Www.Rx8performance.com
Also I couldn't find this fan control kit on ebay or amazon.. Can you share a link please
it's from rx8performance.com they're the ones that make it
@@IOutDoSyndicate How do I order.. Is there a link to this kit. The Site is not accessible after main page
Have you done a rebuild yet?
not yet, planning one for next year maybe, and itll come with a video :)
Good for you putting spade connectors on those wires. The way that coolant sensor was assembled is shameful. The wires should have had female spade connectors to match the male terminals on the sensor. Soldering directly onto the terminals heats the surrounding plastic and warps it.
they should have used Fastons from the factory.. way to save a few cents I guess. nice mod
Thanks man 😊 I agree, it would've have eliminated one possible source of malfunctioning.
Put the factory pulleys back on. Their weight carries momentum better and youll extend the life of your engine auxiliaries.
The couple lbs you save isnt worth it
You are going to return to the original factory thermostat??? Please explain again why when you can.
In my opinion, i have stock termostat, because this low-temp-termostat can cause "cold engine problem". 76 is low for wankel, ideal is keep 85-95 stable as possible. If i have problem with temperature in city traffic, just turn on the AC and fan start immediately.
Tomáš M Great answer and it makes perfect sense.
Yes, because when I drive temperatures are mostly below 80°, especially on the highway. The optimal temperature for wankel would be between 83-85. Below this the engine car warp and wear out faster, cause its below operating temperature.
Driven by madness What do you think? www.irperformance.com/shop/product/engine-rx-8/180f-oil-cooler-thermostat-rx8
@@robertmontgomery7158 its a good mod, im also planning on installing one. I will make a how to video when I do 👌
SAME THING HAPPENED TO MINE!
Sucks having to run the AC just to have cooling until I got home to fix this lol
doing that would be worse as the heat from the Ac condenser would heat the coolant radiator
@@nickt4508AC on but set the temperature to heating
There is a mod to pull more of the heat away from the engine. It also keeps the engine temperature more even throughout.
This mod makes the oil last a little longer in my GSX.
787brx8 what mod? Thanks
I'm going to keep that mod for myself ...unless someone bribes me.😀
Here is a different mod instead that most people overlook.
Use spiralmaxes in the exhaust, two per each tip. Spot weld the outer one in place and it will hold both Spiralmaxes in place.
Has an easy experiment to show you how they work. Get a 2 or 3 liter soda bottle. Put a line 2/3rds from the top and fill with water to that level. Have your hand on the opening and flip upside down. Use a stopwatch to get the time it takes to empty, do this 3 to 5 times to get an average time. That is the control time.
Next just get the water spinning before you empty the bottle. If you have a vortex then you are doing it right. Get the time average time again and there you go. Best to have a helper running the stop watch.
I run Spiralmaxes in all my cars!
Just some suggestions from a retired vehicle designer... do whatever you want with this info.
787brx8 wow thanks for the in depth response. I love fun mods. My only concern is I heard some bad things about water wetter in rotary engines. I would love to use it just fear destroying any part of cooling system. Fill me in if you know more but I’m going to look up spiralmaxes
@@petescarport Skip the Water Wetter then, as I have never used it, on a rotary engine. I had a FC back in the day but never used the Water Wetter in it.
Get the Spiralmaxes used for the intake as they fit in the exhaust well and no one will see them unless they put there head down there. I think they are cheaper as well.
@@petescarport Of course I know more... I used to design cars!
Vtec, Vortec, Voltec, Ecotec and Ecoboost are my designs as well as many others. Notice how the names are similar?
Anyways the RX-8 has many upgrade possibilities some of them are prototypes.
I have a 1998 5 speed Protege that is modified but still needs some more work. Probably be selling it faily soon and moving on to my next project. It would work great for a sleeper or just a fairly powerful 1.5 liter to get around with. Last tank it got 43 MPG and it can beat some 6 cylinder vehicles.
Someone that will fix it up even more, is prefered. It will need a upgraded clutch...at least a stage 2 clutch and some other work.
It's a chance to get a car from an actual car designer...for anyone who cares about that.... Which is no one...😀
Try using waterless coolant,, your engine will never overheat .
This probably works for racing but not for everyday driving. Go to the track and drive the hell out of it :D you probably wont se temp go under 85. But for everyday normal driving oem thermostat sounds better or if u can change the fan activation point at 90 degres to 82
For track this setup is almost perfect. I dont think I would even come close to 100°C 😄 but as you also said, as a daily, the temperature is too low, and metals will wear out prematurely. Cheers mate!
told you 😂
What can I say, im a good listener 😛
1st!
Damn right!
I dunno but i never had a problem with my mazda in 130k km
Very glad to hear that. This means you're doing it right :)
Mate, you need to buy a ratchet crimp tool, those cheap ones are rubbish.