I was absolutely rolling when you ended up on the moon and somehow on an intergalactic highway touge with a lancer 😂 Your sense of humor is absolute gold

Whenever I do something to my car and it starts going wrong and my dad comes out to give his dad advice, he starts saying "bet the guy on youtube didn't show anything like this happening". Well, if I ever need to do my heater core I can say that you indeed showed the frustrations of working on cars in this video.

I really like this tutorial voice over style video

Guess who hasn't had a heater for two years and is getting one now! Next make a video about A/C because I don't have that either and live in TX lmao

really wish you uploaded more. i understand life getting in the way, but I LOVE getting notifications on my phone with a new video from you

Dude, I love the ChrisFix intro haha

lol those pipes reminds me of when i put put the transmission back in after upgrading the clutch and flywheel. Took 3 hours on my back shoving, wiggling, jostling, and forcing to get the transmission to finally seat to the point i could get some bolts in. I just really hope that clutch lasts the life of my ownership.

Lol I pulled my entire dash just to pull my leaky heatercore, and a few weeks later Greg comes out with a video about how I could have not only removed it but replaced it without removing the dash in the first place smh

This was honestly very well produced I feel

Thank you for showing the frustration. "How can I suck at seemingly such a simple thing?" Then you realize that it is just a sucky job that everyone struggles with

I know you were wishing to be behind the wheel of the red dragon on the highway instead of that N/A green sloth.....ole Lancer guy wouldn't have known what the red flash was that went by him.

Thank you so much for the reassurance that I’m not uniquely incompetent or inept! Love the example of shapes to fit holes, I needed to hear that!

Love all the commentary! I've done it with no dash pull and cutting the pipes (I have a vid also 😄) but now I'm upgrading to the nb core and HVAC assembly because my dash is already out. Coming on Friday, so good timing!

I love how well the mx-5 miata corners, it's just the best thing ever because everyone expects these cars to be slow as heck, until they're right up on your bumper. Then the pop ups retract and you hear Forever Young playing as the mx-5 miata passes you.

Great vid, love the message, LOVE that you don't sugarcoat or come up with like-bait BS. Thank you, Greg.

I just replaced my NA heater core after watching this and it was amazing. Thank you so much for doing this video. I appreciate your pain and perseverance. It was not in vain!

Nice, good solution. I've had many projects that have blown up into more work and time than expected!

Perfect!!! I was gonna do this Saturday

I was clapping when you cut the pipes to add the flexible section. What an underrated fix for the hard lines fighting you the entire way. What's funny is that charge piping has WAY more flexible joints and that pressure is much higher than the average coolant system. Like you stated: just get some quality clamps, and use the appropriate hose and you will be golden. Great video!

I did mine recently. I actually bought the 90-93 core from autozone which is aluminum. I cut the hard pipes and connected them with rubber hose and clamps. It did leak the first time I did it because I didn't get the hose all the way around the bend in the hard pipe. After five years with the core bypassed it was well worth it. Still a pain in the ass. I also did the devil's hose which it leaking is what inspired me to replace the heater core.

Thanks for helping me do my heater core! I too had a hard time with the clamps but I was eventually able to get them on. I still need to do the timing belt and the rest of the cooling system before I can check for leaks so *fingers crossed* :)

Man I wish I knew about this when I did my heater core last year. I did a full dash-out job and it was brutal but I was able to attach those hard pipes prior to sliding the unit into place. Also Greg I watched this on Facebook this morning then rewatched here on KZfaq without skipping the ads because I wanted to support you man. Every video is really going to be helpful for years to come as more and more of these cars run into maintenance jobs under the third fourth and fifth owners.

Hey Greg! I am going to start my own Miata and all my cars hacking channel inspired by your work. The main reason I don't find any good instrucrion videos in my Hungarian language so I will make them myself to help hungarian Miatafans out with some instructions. Keep up the good work! I record a few videos before I start releasing them to not make too big gaps between videos but I already uploaded the timing replace timelapse. Cheers!

Literally these videos give me hope and make my day better. Thanks Miata Daddy 👌🏻❤️

the intro is so good, love the vid!

Wow that looks super simple! So glad I watched this!

Loved the message at the end. Following your valve stem seal guide atm and I stupidly forgot the rope on the last piston and dropped a valve, so now I have to take the head off. Some nice inspiration for me, thanks Greg.

Great segment, love the fix that you found.

ooohhh yesss!! LOVED that last part against the lancer!!!

perfect timing, I'm doing mine this weekend thanks greg

Great vid and good struggle! Reminds me of removal of rusty stock roll bar links. Sometimes rinsing the thread from rust with a nail, sometimes rounding the allen hole and ending up carefully splitting that fine threaded nut.

Perfect timing yet again, I was just thinking about putting a new heater core in my na, i think this is a sign:)

Great as always and great humor. Well done!

I fell on the floor laughing when you made the comment about the plugs all being different...and you'd be OK as long as you played that shape game as a kid....HILARIOUS!..Oh and yet another massively realistic and informative video. Thanks Greg.

Terrific vid! Re draining- I used a wet/dry shop vac to suck the remaining coolant out of the core. Hollow pool noodle choked down the vacuum hose from 2" to a 5/8" length of heater hose. I then choked the 5/8 down to a 1/4" and slid it inside the heater box and pulled about a half cup of coolant out of the pan that wouldn't go down the drain.

Some day, I will have a Miata and all your videos will be of more use than just for entertainment.

Good Info!!! I need to do this in the near future. I liked the tip on the NB vs NA heater core. Perhaps a whole rundown on when it's good to go with NB parts for the NA cars would be a good video to do. I wish I would have known about the NB heads being better BEFORE getting my NA head ported and polished.

Thanks for the Great Video!! Been dreading when that issue decides to show up on my NA. Should be a big help.

That rip was sick dude hella good driver I wanna see more videos like that with the vvt!!

Great job, as always! I did this job. Twice. With dash removal. Hint: do Not use a stock Miata o-ring at the core. Its super thin, and it leaks. O-ring with a little rtv = no leak. Thanks for the video!

Nice video, thanks for showing all the struggles!

What i have learned recently is the solution to anything fitting into something, is to use lithium grease. works so well, keeps the o-rings healthy too.

no more heater core bypass, i can finally install it now :)))))))))))

Thanks for the tutorial! Just changed the heater core in my moms 92 sunburst. it was a pain but worked out. No leaks as of now, dicks crossed :D

I was looking for a video on this. Thanks!!

Dude thank you for this! I've been putting this off for way too long on my car haha. I'll probably end up going with the nb setup, that looks way better.

Like the new intro. Keep up the good work!

Thanks, Just about to undertake this job. looks like cutting the hard pipes are the way to go.

Im so happy you make me laugh in your videos

I love the new intro!

Awesome content! Keep it up!

love the new intro

god damit you got me so bad with the chris fix it thing :D

Just did this in my NA, can relate to the frustration and neck pain of not getting those clamps seated correctly...

Highkey loved the intro

Hit the like button just because the last motivational words, pure wisely right there!!

I learned the same lesson you did on mine after I thought I had it and it leaked 3 times lol. Just put the pipes on and cut them and use a hose and clamps and life will be easy. Also on an NA it makes it easier to line the pipes up where they go through the firewall because the angle is slightly different it seems on the NB pipes.

This finna be a breeze! SIKE 😂 your vids are so helpful man and always crack me up 🤙🏻😂

Thanks, I'll use an NB heater core and save myself all the headaches!

Great video and it is very doable. 👍🏻

Hey Greg, it may have been down to the fact I never had one of those round block in the square hole things. But I'm fairly certain that when I went to fit a mk2 heater core in my mk1, the pipes didn't line up with the hvac unit. 😔 I had the dash out, so just swapped in the Mk2 hvac unit instead 👌

Had the same struggle, after a few days I gave up and replaced the o-rings with RTV, which worked. Might still change it out for your solution tho.

I also wish you uploaded more. Your videos are so well produced. I'm a simple man, I see a Craig video posted, I watch it. Also, Greg, what's up with the NB? New project?

Possiedo una nb dell’ 2000 i tuoi video sono fantastici 😊

Good job!

Lol greasy peace fingers..I had an uncontrolled outburst when you added the radiator hose. Awesome job I just get nervous for you these days on street rips, I guess that is the passion part..

I was looking at it like....why doesnt he just cut the tubes? Lol 100k is well deserved!

Working on a lot of cars I’ve had that exact 14:15 min mark conversion with myself lmao

Or you could run two heater hoses from the cut down pipes at the heater core all the way through the firewall and directly to the motor.

I knew it, Chrisfix is your east coast twin!

My 10 year old literally fell over laughing when he saw the Kerbal, great video!!! 👍👍👍👍

DAMN thats a beautiful Miata!

Grande greg ti seguo dall’Italia ❤️👍🏻

Haven’t watched. Still clicked like

Almost forgot about this channel

* Takes hard right turn * WTF why are my feet warm and sticky? * Takes hard left turn * WTF why is my floor mat green?

Greg you could make a tutorial on how to put gas in a Miata and I'd still watch every second of it.

Can you do a video going more in depth on tuning principles? The 3 part video series is a great start but I feel like you have a lot more knowledge about tuning to drop on us.

Smh, dude I literally ripped my dash out last weekend and changed the heater core, ha ha

chris fix intro was epic

great video chris! *I mean greg

Everyone in the car community when we see a friend “welcome to the moon”

Great video, absolutely loved the Need for Speed chase part! And a bit of unpopular opinion: I miss your old style tutorials without voiceover, with you actually speaking in the footage. I don't know if it's easier to edit or quicker but the oldies were better in my opinion. The information and the technique was on point though. Peace

I've got to give you props for sticking with it, but that looked so uncomfortable, I'll just put my top down and lift the dashboard out again next time. 😅

Love the video and style. Feel sorry for that NB....

Chrisfix here---- that bit killed me!

damn brother, every single thing I do is this way....i usually end up getting it but sometimes it beats me...like the broken tap I still have in my hood hinge from a year ago lol

update: found them from mazda for about $90 (part #'s NC10-61-A15 & A16). NB core pipes do NOT line up with NA core housing; possible to do but you have to mod the housing

Had to do the core in my 90 the exact same way.

Miata detailing video next, damn that car is gritty.

This is nice

BTW, Vaseline will cause the rubber o-rings to swell. Better to use plumbers silicone. I learned the hard way on a home faucet.

Yes!

Protip for working on Japanese cars, buy JIS screwdrivers, they are different than regular Phillips and makes removing JDM screws way easier.

Excellent :)

Not only *might* you want your heater core for heat, but most people might not know that if you remove it, you won't have a defogger anymore. The defogger/defroster system for the front windshield uses warm air out the fan. Don't ask me how i know this. It's not fun having your entire car fog up, being unable to drive everytime you have to roll your Windows all the way up during a heavy rain storm.

I was coming up with the cut pipe solution while you were struggling. Might braze or solder the pesky joints permanent like. Not having a heater can be a safety issue when you can't keep the windshield from fogging. It can happen suddenly while driving and if you're going into the sun you're blind Carry a towel. It gets musty and moldy in the winter too. There's plug in heaters for that. Wondering if this method works on a F250?

Was this a 1.6? absolutely loved the rip

Did I hear him say that a worm gear clamp is not likely to leak? I don't think that I've ever used one that didn't leak. Those oem quality spring clamps usually work quite well. I would have used one of those instead. Thanks for showing the frustration. We've all been there.

Damn, wish this was possible in an NA but I highly doubt it with those fixed hardlines.