Flyin' Miata Coolant Reroute Installation

Join Brandon as he shows us a step by step install of our new FM exclusive coolant reroute onto a turbo NB Miata, and discusses some minor differences between the NA and NB install.
INDEX
Kit Overview 0:16
Prep & Disassembly 1:06
New Reroute Housing Assembly 11:41
Housing Install Out of Car 22:49
Housing Install In-Car 25:37
Upper Radiator Hose Removal 32:30
Front Block-off Plate Install 35:40
Upper Radiator Hose Install 38:11
Turbo Water Line Install 46:31
Reassembly 1:16:55
NA Specific Install Notes 1:17:55
Final Assembly 1:20:36
Adding Coolant & Bleeding 1:24:43
Outro 1:31:09
FM Coolant Reroute:
www.flyinmiata.com/flyin-miat...
Looking for more information about why a coolant reroute is beneficial in a Miata? Watch this:
• The Science Behind Coo...
Flyin' Miata is the world leader in Miata performance. We offer a wide range of parts for all years of the Mazda MX-5 Miata.
www.flyinmiata.com
970-464-5600

[@maneki9neko]

I enjoyed watching you work, Brandon. Your choices. How you manage the routing of things, and torques. You explanations were clear. Very helpful.

[@elementaljosh]

Literally installed a coolant reroute yesterday lol. It was the I.L. Motorsport one though, I don’t have the budget for the FM one :/ gasket maker seems to be the magic sauce for avoiding leaks

[@rp6523]

Sold! As soon as I get to this stage I'll be ordering one of these.

[@dornan00]

I just installed this on my NA. Just FYI it helped a lot to remove the CAS to free up some room back there. Definitely reinstall with the replacement bolt supplied in the kit to provide access to the bleed valve

[@tommyestridge9301]

Excellent presentation, Brandon does a wonderful job of showing all of the steps and possible pitfalls.

[@jeffhaft7378]

Putting it on my 1999 tomorrow..... then it's time for the FM turbo kit install after........... I'll do the rear diff and FM happy meal clutch kit after my road trip in the beginning of June......I at least want the coolant reroute and turbo on for the road trip lol. Nothing but love FM....keep it up

[@FlyinMiataVideo]

Thanks Jeff!

[@anotherdumblogin]

Nice video! Thanks for explaining so so many good details. The one thing I'd suggest to improve the video is to remove the repetitive background music.

[@jakeschreiner9398]

yes

[@mjenx86]

At 46:27 I noticed that you forgot to clamp the hose onto the reroute outlet pipe. I see you eventually noticed it though, because at 1:01:59 it is installed. Awesome video guys! Can't wait to get mine later this year. Are there any upcoming sale events to watch out for?

[@crawford323]

Aaaaaaaaaand you don’t do drugs.......amazing. You never even threw a wrench.

[@baltod4978]

I've had both the Super Miata reroute and this one. This one was by far the easiest to install, not to mention the added ports to cool the turbo system from the cold side.

[@rosaatomica9976]

are there any cons to this kit? im really debating this or the qmax for a 350whp turbo build with an efr6258 and im thinking about which would benefit me in terms of easy cooling for the turbo as well

[@baltod4978]

@@rosaatomica9976 With this kit (the only kind that I believe is routed this way) the turbo get water thats been cooled through the radiator vs water thats already been heated up coming out of the block. Its supposed to help the longevity of the turbo, but thats hard to quantify. People that have it routed the other way have had them last a long time. Maybe the cooler water will help it last longer? Only time will tell I have a temp sensor at the coolant route and one at the front where the hot water comes out- the coolant at the back stays steadily at 195 degrees, while the water coming out of the block will fluctuate wildly between 215-250. If you're wanting to feed the turbo cool water, its obvious where you'd want to grab it from

[@rosaatomica9976]

@@baltod4978 215-250?? damn so basically saving the fourth cylinder at the expense of the first :/ thats somewhat of a bummer, but i imagine even with those temps and a well maintained turbo that the car would last a lot longer without a reroute, im also pretty disappointed about the floppy silicone hose and worm clamps this kit comes with, makes it feel cheap and not formed well

[@baltod4978]

@@rosaatomica9976 Yea. It'd only ever reach that high on the hot days though. Without a reroute water goes into the front and exits the front at a different location. The 4th cylinder coolant can get stagnant. With any coolant reroute however- water passes through completely. So any reroute is better than no reroute supposedly. I got a Blackbird fabworx coolant tube that basically replaces 3/4 of that long silicone hose with mandrel bent tubing. Cleans everything up nicely and doesn't rest against anything like the hose did. The FM reroute has a lot smaller footprint than the other ones tend to have. I had a real difficult time getting the Super Miata one installed. This one slipped in and out perfectly though, with room to spare. That- and bing a single piece makes it worth it to me.

[@rosaatomica9976]

@@baltod4978 i see, if i could get something like that blackbird hose or the one iL motorsports makes id be pretty happy, im still a skeptical about which unit really flows better or is worth it since the fm is 300 and the qmax is 200

[@streezyrider121]

Great vid, I must have missed the haircut tutorial somewhere in this though.

[@FlyinMiataVideo]

He must have gotten too close to the fans between takes!

[@ndemeis]

Just installed mine last weekend. What size hose from the iac to water pump?

[@lisaburke1719]

Have you had any reports of/problems with the heater core hose being melted by the EGR pipe on an NB2?

[@Buzz65]

Another excellent install vid from the FM folks! I might have missed it but is there a happy meal install vid?

[@FlyinMiataVideo]

No Happy Meal install video at this time, but it's on our list to try to do eventually.

[@MicheleGardner-Everton]

What thread sealant did you use instead of teflon tape?

[@alexissixela6914]

the music on loop the entire time got old real fast... other wise it was good.

[@ryanmw5156]

Bought the reroute and so far very happy. Half installed but I have a question. The thermostat I got with the kit is fairly loose in its installed position, is this normal and if not should I be concerned? Thanks.

[@FlyinMiataVideo]

A little loose is fine. The key is to make sure that the c clip is fully seated so that the thermostat will not fall out. Thermostat rotation is completely normal. Once the thermostat is seated, make sure there is not any large bypass for coolant to pass around the thermostat. If you have any other questions or issues, please give us a call at 970-464-5600 or drop our techs an email at [e-mail]. Hope that helps!

[@DaJoJomason]

What coolant type/brands do you recommend for a street driven 1996 Miata? Also is there any specific one you guys use?

[@FlyinMiataVideo]

This is the sort of thing that some people get very excited about and there are probably multiple extremely long forum threads out there. More important than the very specific chemistry is probably the change interval. All the different chemistries are mostly there for corrosion protection. One thing we do recommend is to run the minimum antifreeze level required. 50:50 is great if you drive year-round in Canada and your cooling system has to be safe to -40F/-40C, but it's far too much antifreeze for a summer-only or more southern car. Antifreeze has a lower specific heat capacity than pure water, so running too much antifreeze will decrease the ability of your cooling system to store and transfer heat. Running 30% antifreeze will improve your cooling system's efficiency and still give you freeze protection down to 0F/-18C.

[@eugeneclur5961]

My heater core broke! Can I bypass the heater core by clamping down or closing the two lines that led to it? Should I get rid of the thermostat if I did that? Or should I connect the the hardline from under the exhaust manifold to the heater connection in the back of the head? If I did that do I need to restrict the flow similarly to how the heater core did previously? Some tough decisions out here

[@FlyinMiataVideo]

Please give our tech guys a call or drop them an email at [e-mail]. They would be happy to help give you some advise to work through this!

[@tarm7306]

any tricks on getting the EGR pipe back on. did the reroute along with my turbo install on a 96NA. With the coil pack, CAS, and now the reroute back there I cant get the new EGR pipe to line up.

[@FlyinMiataVideo]

@tarm7306 Which part of the EGR pipe is causing you issues? The place where it installs on the intake manifold, the exhaust manifold, or is the pipe interfering with the reroute housing? It may be easier for us to help you if you contact our Support Team directly - [e-mail] or 970 464 5600.

[@MendicantBias1]

I plan to do the coolant reroute before going for boost. Should I install the turbo feed and return barbs and just loop them?

[@FlyinMiataVideo]

Good question, let me check that with our engineering team.

[@FlyinMiataVideo]

Engineer said: Yes, that will make everything easier in the long run.

[@MendicantBias1]

@@FlyinMiataVideo You guys are awesome! Thanks

[@leobonvino]

what would be the standard way to eliminate the water neck on a N/a car?....

[@FlyinMiataVideo]

Not sure what you mean by "Standard" way. We suggest you reach out to our tech department directly at 970-464-5600 or mail [e-mail]. They should be able to help you and give you much more detailed answers than we can here on KZbin comments. Thanks! :)

[@dmck2533]

Any difference installing on an MSM with a Garrett 2560R?

[@FlyinMiataVideo]

There is an addendum kit for the extra hoses, but as long as it's a Garrett turbo, you should be good. Please feel free to reach out to our support team for specifics or more details. Thanks! flyinmiata.com/products/hot-turbo?_pos=6&_sid=cfe15ff70&_ss=r

[@CCGtavern]

So would I be safe with a small turbo without a coolant reroute? Or is this a must do before (or shortly after) forced induction?

[@FlyinMiataVideo]

It depends on how you'll be using the car. Note that small turbos tend to run hotter at a given power level due to the increased backpressure.

[@CCGtavern]

@@FlyinMiataVideo tha is for the fast reply ah! And ah okay; its my weekend car. I dont daily it and don't live anywhere near a track sadly lol. So if i didn't want to coolant rerout would a slightly larger turbo be a better choice then? Or should I just do the reroute? Lol

[@FlyinMiataVideo]

Size the turbo for your needs and deal with any cooling issues that come up!

[@brandonlow27]

Why put hose clamps over heat sleeve instead of bigger heat sleave slipped over the hose clamps?

[@FlyinMiataVideo]

To make sure the hose is completely covered and protected while ensuring the heat sleeve doesn't slide or move over time.

[@Driver67]

Deez Nutz 5:32 I see what you did there

[@oscarscott8353]

What's the total length of the turbo connection coolant hose?

[@FlyinMiataVideo]

We include 100” of 5/16” hose with the Garrett turbo connection kit. That’s more than you actually need for standard installations.

[@manfigs]

That bottom bolt on the coil is critical on a 90 Miata. Too much vibration over time for only the top two bolts.

[@FlyinMiataVideo]

We've had it off some of our cars for decades.

[@manfigs]

Odd mine brakes over and over from engine vibration

[@TheAliKaveh]

i was never sent an adhesive gasket and now i’m just waiting for an email back from technical support while my car sits. pls get back to me.

[@Vdeez]

Yea their email support has been slow af

[@FlyinMiataVideo]

Thanks for your patience, guys. Our customer support team is seeing a massive volume of emails, more than we've ever had and they're working hard to keep up.

[@michaelh.9866]

Can the kit be installed somewhat easily with the engine still in the car?

[@michaelh.9866]

Sorry - I sent the question before watching the whole video.

[@puddentaine]

Are the plugs removable to add a turbo later?

[@FlyinMiataVideo]

Yes, we offer a "Turbo Connection Kit" to make sure you can cool your turbo with our reroute. www.flyinmiata.com/default/catalog/product/view/id/8352/s/hot-turbo/category/2/

[@puddentaine]

@@FlyinMiataVideo what type of thread paste do you recommend?

[@davidvasta]

Why would you need to do this? I was hoping you would say that at the start? What is the purpose?

[@FlyinMiataVideo]

We have an entire video dedicated to the theory of re-routes and why they are needed on these engines. This video was specifically just to help customers with installation instructions. If you want to know more about why reroutes are beneficial on Miatas, watch this: kzbin.info/www/bejne/qIfKdKuGhdqJfqs

[@fatalgaming6068]

with that big of a bypass past the thermostat the car wont come up to temp quickly or at all in cold climates. why would you add this to your reroute?

[@FlyinMiataVideo]

I'm sorry, but we're not really following your question. With our reroute, there are two potential bypasses around the thermostat, the heater core and the turbo. The heater core is a bypass around the thermostat stock - so the heater works quickly - so we're not changing anything there. The water flow through the turbo (if added) is technically an additional bypass, but there's not much flow through there (which is on purpose since the water cooling is really only needed after you shut the car off). If that's not what you're referring to, can you specify what bypass you're talking about?

[@fatalgaming6068]

@@FlyinMiataVideo does that bypass in the housing below the thermostat just go to the heater core then back through the front of the engine or does it go around the thermostat and through the radiator then back into the engine?

[@FlyinMiataVideo]

@@fatalgaming6068 The water pump inlet, on the front lower left (driver's perspective) of the engine? The metal pipe attached to the rear of that housing is the return from the heater core. The coolant coming in there starts at the back of the engine, flows through the heater core, then flows back into the engine at the water pump inlet (this is true with stock and with our reroute). The smallest hose on that piece (attached to the front of it) is a bypass around the stock thermostat (that remains with our kit, typically). Short version, the only additional bypass with our reroute is the turbo, if installed.

[@fatalgaming6068]

@@FlyinMiataVideo I understand the heater core part/ bypass. That’s just like factory, but the bypass connects to the hose that feeds to the top of the radiator which is cooling your coolant way before the thermostat opens. This will overcool the engine when warming up and can cause excessive warm up times and cause the engine to not fully reach operating temp in 30-40 degree Fahrenheit days. That bypass should either not connect to the coolant hose post thermostat or be made about 90% smaller.

[@just_passing_through]

I might be missing something, but the point of the entire process would be???

[@FlyinMiataVideo]

The point of the reroute? To even out the temperature differences across the head, provide additional cooling, and a cooler, more active cooling line directly to the turbo. This video may help: kzbin.info/www/bejne/qIfKdKuGhdqJfqs

[@just_passing_through]

@@FlyinMiataVideo Thanks for that link. I just watched that video. So basically instead of the cold water entering the front of the block and passing piston one first and then getting a bit warmer as it passes piston two and a bit warmer again as it passes piston three and a bit more warm as it passes piston four, and then returning to the front of the block to exit, it now does exactly the same thing and gets warmer as it passes each piston but then exits out the back of the block. I’m really not sure how that reduces the temperature variance as the coolant still gets warmer as it passes along the chain. Will it not still be the same temperature as it passes piston four? It still took exactly the same path to get there, just exited through a different port on the way out.

[@merlyn2121]

@@just_passing_throughwith the reroute it's goes into the back now and leaves out the front. So hits cylinder 4 first.

[@cory45x]

Those are called adel clamps sir

[@merlyn2121]

After market smaller thermostat!!! Blasphemy!!!

[@kysephia]

The way you all have us modify the gasket make it a no sell. I would rather use a setup that uses off the shelf gaskets WITHOUT the need to modify it. You all missed the mark on this one.

[@FlyinMiataVideo]

We can certainly look into custom gaskets, but that will increase the cost of the kit. It's one of those things that's really cheap to make if you're stamping them out by the thousands but surprisingly expensive in small quantities.

[@Pippy1]

Its like a 2 minute job with a razer blade come on dawg