Just in case anyone was wondering...
I spent part of my day tracking down service and replacement parts for the used M-Tuned Coolant Reroute I recently picked up. I figured maybe I could save some people some time and dump it in a thread. Maybe the images will work this time
Mods feel free to move this if its in the wrong section.
Definately made by Vibrant.
And you will need about 3' to get the job done
5' section will run you $31 here: Vibrant Performance Reinforced Silicone Heater Hoses 20485
Both the rear housing and the thermostat housing are 1.25" OD so this would be the correct hose.
Hose Support Coil
In my used kit, the coil spring that keeps the hose from collapsing in the 90° bend section around the intake manifold is VERY rusty, probably because its made out of mild steel and OP most likely ran Water Wetter and straight water for track days. I really don't want to invite this stuff into my coolant system so I want to replace the coil with something a bit more corrosion resistant.
The people at Earl's make a stainless steel coil for Earl's -20AN Pro-Lite 350 hose. -20 comes out to be about 1.125" but I believe that's close enough for our purposes. Stainless should be just fine in this application.
A 4' section will run you $10 here: Earl's Performance Hose Inner Support Springs 773420ERL
Thermostat, Gasket & Housing:
For a super hassle free option, you can buy the entire Thermostat/Gasket & Housing from 949Racing in one shot and save yourself some time running around trying to find everything:
Inline Thermostat Housing
If you just need parts...
As you can see in the 4th and 5th images above, the PO confirmed he used Black RTV in
the threads of the housing to keep it from leaking. I don't expect to ever be able to get that apart to replace the thermostat, so I've been on a mission to replace it. The housing is of course 1.25" OD on both the inlet and the outlet. It matches up almost perfectly with this guy:
$60 sans thermostat: Meziere Inline Thermostat Assemblies WN0071
It's slightly different visually, but even the pics on the Summit and Meziere product page for the WN0071
don't match perfectly so I'm guessing that's production/revision variance. I don't really think it matters. It's the correct size and it holds a thermostat.
RavynX so kindly documented in this thread
the CORRECT rubber gasket seal thing is Stant 25270 and the 180° thermostat is Stant 13958.
It's a pretty basic looking thermostat. You can buy these all day long for $5.
180°: Stant 13958
Mine appears to have a 195° Stant 13959
siliconed in place and does not have any sort of bypass hole. It does have the little brass air bleed jiggler as seen in the above image. This makes me slightly nervous as there is 6" of hose between the back of the head and the thermal pill/spring assembly in the thermostat itself. I may see if I can get in there with my dremel or a pair of needle nose and remove the brass jiggler so that its hole can be used as a bypass. It's probably around 1/8" diameter.
Rear Water Outlet
This is of course Miata specific.
Go buy it from 949Racing for $169: Miata Coolant Reroute adapter
Note: The "auxiliary" port for an aftermarket temp gauge on the rear water outlet is supposed to be 1/8" NPT. I found that mine was radically undersized to the point where I could only get 2.5 turns to engage before I had to switch to a tool. And yes, I tried 4 different 1/8" NPT threaded items before assaulting it with a tap. I can now get all but the last 2 full threads to fully engage on my VEI temp sender.
Rear Outlet Gasket:
For the rear housing, you can of course go buy the gasket directly from Mazda. Its PN: B621-15-173
It's $3.62 from Arlington: GASKET,THERMOSTAT (B621-15-173) - $3.62 - B62115173
I'm sure you could also take a trip down to the local FLAPS and get a FelPro or other gasket and do just fine. RTV or shellac is of course up to you.
If you want to be a cave man about it, feel free to use any OTS worm clamp to make your life miserable. Those of us with more enlightened tastes prefer T-Bolt Clamps. The Vibrant 2787 is all stainless steel and has a 1.250" to 1.600" clamping range, so it should be perfect in this application.
These will run you about $13 each: Vibrant Performance T-Bolt Hose Clamps 2787
I think that about covers it, other than the front thermostat block off plate, mounting bolts and plugs. Those are pretty common items so I'm not going to bother hunting down part numbers and whatnot. Let me know if I missed anything or if anything is inaccurate.
And yes, I am aware that you can go buy the GM hose for $10 and save some cash. If you stumbled your way into this post because you were searching for reroute stuff, chances are you have already come to that conclusion, having already read all the reroute threads