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Oil cooler thermostat?

Old 08-05-2009, 01:22 PM
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My pics are of various coolers from differing years.

Paul
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Old 08-05-2009, 01:25 PM
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Originally Posted by ASH8 View Post
Paul, what Mazda is that off again, and location, I am just trying to visualize , the second pic looks like a separate attachment bracket with two bolt holes. Line in, line out.
The second one is 2nd gen FC.

Paul.
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Old 08-05-2009, 01:30 PM
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The FC is the long single skinny cooler N326-14-700A ...yes?
Same oil cooler for all FC's.

Would like to see an RX-8 one cracked open Paul.

Last edited by ASH8; 08-05-2009 at 01:33 PM.
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Old 08-05-2009, 01:41 PM
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Here's the EPC diagram for the FC showing the thermo pellet.

Paul.
Attached Images
File Type: bmp
FCcooler.bmp (264.1 KB, 362 views)
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Old 08-05-2009, 01:45 PM
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Originally Posted by ASH8 View Post
The FC is the long single skinny cooler N326-14-700A ...yes?
Same oil cooler for all FC's.

Would like to see an RX-8 one cracked open Paul.
I'm sure I have a damaged one we can do. I'll also check my 09 stuff as well.

Paul.
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Old 08-05-2009, 02:34 PM
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Originally Posted by Mazmart View Post
I'm sure I have a damaged one we can do. I'll also check my 09 stuff as well.

Paul.
Great, Thanks Paul, yes I agree on the FC having a Thermo Pellet in it's oil cooler, would be great to see an RX-8 one, BUT the EPC does not show any separate parts breakdown like the FC has.

Here is the FC Part Numbers
8871-14-810 Thermo Pellet
1757-14-821 Spring

I can tell you that from the parts model codes (front 4 numbers) the pellet
8871 is from Series I RX-7, and the 1757 spring is from the original 1974 13B RX-4.
Attached Thumbnails Oil cooler thermostat?-fc.jpg  

Last edited by ASH8; 08-05-2009 at 02:43 PM.
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Old 08-05-2009, 02:45 PM
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I guess the RX-8 OC thermostat is in this location..

Attached Thumbnails Oil cooler thermostat?-8.jpg  
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Old 08-05-2009, 08:50 PM
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maybe that could be used for a drain plug too?
OD
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Old 08-05-2009, 09:51 PM
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Great to use as a cooler drain spot, but I am pretty sure the RX-8's don't have this removable bolt, the parts pic above does not show one and I don't recall seeing one on mine, you could always undo the oil cooler hose OD to drain mate.??

Correction, gee I am an old stupid BASTARD at times, yes there plainly is a bolt head there??? Derrr DUMB aren't I, a senior moment.

So yes, OD perhaps this is a drain point...MMMmm will have to investigate...

Sorry Dudes..

Last edited by ASH8; 08-05-2009 at 09:53 PM.
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Old 08-05-2009, 10:05 PM
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WOW...
$87.03 US for the 8871 Pellet and $2.81 for the 1757 Spring, is it GOLD Plated or something.

8871-14-810 Thermo Pellet
1757-14-821 Spring
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Old 08-06-2009, 07:33 AM
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This is the access point to the thermostat as Mr Engman reminded me last night. That's how we modify them on the FD and FE (SE3P). The design is a bit different as the bolt head will not separate from the thermostat.

Paul.
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Old 08-06-2009, 08:04 AM
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Here's what it looks like inside boys and girls:

Paul.
Attached Thumbnails Oil cooler thermostat?-080609-001.jpg   Oil cooler thermostat?-080609-002.jpg   Oil cooler thermostat?-080609-003.jpg  
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Old 08-06-2009, 08:44 AM
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Paul is that thermostat unit able to be replaced without buying a whole new cooler? That would certainly be a cake install!
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Old 08-06-2009, 08:59 AM
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well looks like a good drain spot and it appears to be on the passenger side?
Good info guys--great job--Paul you are the man! Ash you aint bad yourself mate.
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Old 08-06-2009, 09:10 AM
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Originally Posted by Flashwing View Post
Paul is that thermostat unit able to be replaced without buying a whole new cooler? That would certainly be a cake install!

Or modified as we do. The problem is Mazda does not sell the thermostat by itself so no part number exists just as Ash pointed out.

Paul.
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Old 08-06-2009, 09:11 AM
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Originally Posted by olddragger View Post
well looks like a good drain spot and it appears to be on the passenger side?
Good info guys--great job--Paul you are the man! Ash you aint bad yourself mate.
olddragger
Thanks Denny.

Paul.
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Old 08-06-2009, 10:09 AM
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So that is on the passenger side right? Is there a downside to constantly removing and reinstalling that bolt/thermostat?
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Old 08-06-2009, 10:33 AM
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You will be surprised at how little oil you will get out by draining the coolers.

I opened both and cleaned out the lines with an air nozzle...and got maybe an extra 1/2 - 3/4 quart for about 1/2 hours work......

Just not worth it in the big picture
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Old 08-06-2009, 11:02 AM
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Oh, well scratch that then.
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Old 08-06-2009, 02:10 PM
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Okay, does anyone know what size the oil cooler line fittings are? Does anyone have a full diagram of the stock oil cooler system?
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Old 08-06-2009, 02:14 PM
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I used -10AN lines for all my oil lines...Not sure if that helps
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Old 08-07-2009, 09:18 AM
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So you ditched the factory lines for an fittings and aftermarket lines?
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Old 08-07-2009, 10:13 AM
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It's kinda in progress..I did it with stock coolers and new lines...but now I'm redoing the front with the new nose..and will put in larger cooler with fans when I do that
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Old 08-07-2009, 10:21 AM
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Are you going with one large single cooler?
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Old 08-07-2009, 10:35 AM
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Nope...2 approx. 11X10" with fans Just have to find the right units
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