Once the fans are being controlled properly they might be ok ,not the best, but they should keep your car sufficiently cool for a while.

You could probably find jack stands or ramps (I guess allot of people here use ramps) on craigslist too.

 

Yeah i need aomething secure, if i was crushed and killed, my wife would bring be back with a medium just to ghost bust my A$$...

All kidding aside, ill try to get a set of ramps. Hope they arent too much.

Here is a question that i have been nervous to ask. The understay is fromw what I understand, essential to coolig, how exactly? It stops hot air from being recirculated through the radiator? So the tray connects to the radiator, and extends to the bumper, is that the logic behind it, so it should have some vents of course as to prevent and kind of bottlene king effect?

Now that i have unleashed my full noobness, let me know, i will get started tomorrow with sheet metal from the onestop shop automotive hardware and repair DIY, Home Depot... LOLLL

 

The tray also helps direct sir through the radiator when at speed of any sort. It also makes the car more stable st higher speeds(100+) IMHO.

The tray extends a little under the radiator. It also has side walls.




here are my homemade uprights next to the stock ones.









and a view of the front of my car. ignore the shiny alum box and silicone boots.



Rough measurements for the pourpose of purchasing materials. 31" wide. 24" deep for the bottom. 17" long x 10 Tall for the uprights. That is before figuring in any bends and mounting points.

 

I honestly thought that was a picture of my car log. The resemblance is uncanny...



Yes, the stock type undertray is more like a funnel than anything.

 

Nice it looks pretty close. Even half covered with spilt oil across the btm of the car.

 

@logalinipoo

I trust you. When mine fell off, I went through a car wash and it knocked the wires odd one of my spark plugs. Got the tray back, didn't happen again. Shrug

 

"14. Please include a descriptive subject for your thread. People shouldn't have to open the thread to find out what the topic is!"

 

Hi,

I just found out, fan relay #1 and #2 are controlling the fan on the right, "facing the car view" and fan relay #3 is controlling the fan on the left.

This does not strike me as normal. The fan on the right will not spin unless both relays are plugged in.

Also i installed a stock relay and the fan doesnt seem to be apunning faster, i guess i have to bite the bullet and buy super fans. Something to move 3x more air. The car performed better today than it has since i got it "heating wise"

I guess the lower tray and badass fans is the answer. It will sometimes get hot while im moving on the highway, so that tells me the fans are not doing the job. Ugh...

Can someone tell me a target CFM rating i should aim for? Current fans are moving 880cfm. X2. Also... why does the RX8 have three fan relays???

 

Where is this magical junk yard if you don't mind my asking?

 

The fans do not do anything when you are driving down the highway. You need the undertray to force air through the radiator instead of letting it flow under the car when the car is moving. The fans contribute to cooling when the car is sitting still only.

You need to fix both things, but you also need to understand how each component works.

 

Thank you for that explaination. Now I see the importance... why the heck sould someone remove it? The previous owners seem if anything to have purposely tried to kill the car. I feel bad for my car now.

 

Mazda Nissan Heaven. I see their ads on Craigslist all the time. Bought some brake calipers and other stuff. Seem like nice folks.

 

The tray was probably messed up from a front end accident and never replaced.



Mazda nissan Heaven hasen't had many 8's when I've looked there. but they normally have 1-2. There is a place down 287 in kennendale that has a nice blue car(rear end damage) and a decent yellow. He has had the blue for years and doesn't want to sell anything except the front clip.

 

Toast, I have a better idea. I think I can get you most of what you need. Private message me when you get a chance please

 

Hey chris, thanks for that offer!! A lower heat shield would be pretty awesome if you can getbyour hands on one.

I just purchased an aluminum under tray on ebay. After I install it, I will post the results. I hope that is the last missing piece of the puzzle. The car maintains its temp untill i accelerate. So it feels like im right there.

 

Can you update us on what you've done so far, to avoid confusion?

The reason there are three fan relays is obnoxious but still good to know.

There are effectively 3 modes for the fans on the Series I, I think series II has 4 modes total.

Mode A - Only Relay 1 is powered - Fans L and R on in series (both at low speed)
Mode B - Relays 1, 2, and 3 are powered - Fans L and R are in Parallel (Both at High Speed)
Mode C - No Relays are powered - No fans are on

On a stock tuned car Mode A is active above 97C, Mode B is active above 101C, and Mode C is active below 97C or above 10kph

I included the little animation if you want to look at how the relays work, it's different than in Series II cars, I think they have another relay or control relays 2 and 3 separately.

 

Well I have a stock relay in number 2, there is a stock relay in number 3 also, number one still is connected to the after market sensor, that relay should be here in 2 or three days.

I have an aluminium under tray coming from ebay, I think I have to fabricate the sides for it, it only has the flat tray part.

Aside from that, I made my own lower heat shield so the fan doesn't heat blast my intake. I make a makeshift intake out of stuff from home depot. The filter was inside the engine bay sucking up hot air from the radiator fan, essentially suffocating its self.

prior, the car would overheat within just a few minutes of driving, now it maintains a stable temperature until I accelerate. If i gas it and then come to a stop, I am in big trouble.

 

Yeah, get the extra relay rolling. Legot nailed it on how they are supposed to work.

Just take it easy until you get the cooling under control. The under-tray and relays should do it.

Then I suggest the fans on low mod from the contrats thread after you do the foam.

 

Ok so the check engine light was from a misfire in the leading plugs.

I did a compression test, 98 dry and 125 wet. Thats good right?

So no more check engine light, just the tire sensor staying on, i want disable it, ill google that i guess. Feels good to drive my car and have it in good working order, i cant wait to get the under tray on...

 

That compression test really means nothing. you need a rotary specific test. IT'll give you 3 pressurs per a rotor and an rpm rating.

So you'll have 6 pressures and 2 speeds.

also what do you mean by dry and wet?

 

Tested the compression with the csr running and not running, removed the fuel pump fuses. I guess that was a waste of time then?

 

Toast

I'm going turbo in the next month. I should have a stock air box, stock intake, and I was going to offer you a stock splash shield ( I am also going aluminum). But you got that settled.

Let me see what parts come off. You can have anything you need, for the price of shipping.

 

well the actual pressures are in KPA or something like that so mazda numbers are like 6.1-9. Some where in between. I don't know how it translates to PSI.

The specific test. Measures each rotor face. Then compares them to each other. and there is a rpm based adjustment. Since our motors normally seal better as rpm's go up.

 

Where's the front strut bar in your last picture?

 

Owner before me sold it like a retard. I have to buy another... i picked up the car for 2k... turning out to be a bad investment because i put about 4k into it now and still have plenty of issues.

But that's ok... its my car and I will fix it. Money comes and goes, but I do love the feel of the Rx8.