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Thanks for the videos greatly appreciate it excellent explanation however I think you’re failing to mention one thing about the NB model vs NA. the overheating issue was really with the earlier NA models when Mazda figured out this issue and when they introduced the 1.8 96/97 NA and NB models they changed the gasket to allow more more coolant to flow to three and four at lower temperatures. The rerouting this models does not make sense unless you change the gasket back to an earlier version as it will have the reverse effect. Also, this does not matter on street car only on a car being beat up for long periods of time.

Could you do a video on the exhaust gas recirculation line?

Great explain

Very informative thanks

mass flow is mass per unit time kgs^-1 in SI unit not volume per unit time m^3s^-1 in SI units

I was always wondering where the breather was so I could clean it.....I never found it. Now I finally know it never existed

Great video...thanks. The circulation re-route video would be great.

Just vent to atmosphere.

Amazing video, thanks :))

Most understandable video, really helped, thank you

I think making a video on suspension with these types of illustrations would be awesome too. Especially showing the relation of bump and droop travel and importance of overall suspension travel. Hopefully will convince miata owners to stop buying 2 piece coils 😄

It's not a big deal because the O2 sensor will see a leaner mixture, and make fuel corrections in milliseconds to maintain 14.7 /1 . Worst case your fuel trims will change, but the pvc is just a way of trying to re-burn un burned crap from blow by.

Love the video, thanks for the clear explanation, learned a lot from it!

this is super useful info that I haven't seen laid out in an easy to digest way. cheers!

i have watch many videos and its all about stupidity.. this is the only video that is not stupid to ruin the engine.. thank you for this knowledge about the engine..

Great video thanks..

Phenomenal video! Please do one or cam angle sensors/vet for the Miata.

Love your videos on the miatas, I'm looking to buy an NB to track and daily drive, how many miles on the default cooling route do you think are enough to really affect me? most of the examples I'm looking to buy are roughly 130k mi and I'll likely do the coolant reroute before tracking it at all. Could you please do a video on lubrication on the B6 and BP? I want to understand better what's going on with oil flow with both the direction and how inhibited it is. One thing that I'm worried about with doing aggressive oil pan baffling is whether or not it'll inhibit the actual oil flow rate from the pan

alright i got a question. i plan on doing a valve cover cut to expose my cam gears, but when i do that the bracket/hose won’t be able to be attached leaving the hose to dangle. instead of doing that would a catch can on the hot side of the engine be a solution ? or would it be better to find a longer hose and route it differently ?

I have a NA8 and just got a link ecu and I got it tuned 3 times but it's having trouble cold starting and idling as it sits at 1500 rpms till you cycle the car (turn it off and on again) then it goes from 1500 to 1000 but if you touch the throttle it repeats the process. I have been told it's a vacuum leak but am not to sure... any insight is welcome

This was helpful

Thank you : )

Amazing video, thank you!

what if you added pcv valve on the hot side too

Real good video, just met a guy at the track with this reroute and I am definitely going to apply it to my NB.

awesome explanation, subscribed!

Gread vid, big thanks!!

I've been watching hours of content about miatas, I own a NB, hands down this is the best explanation of the reroute kit I have seen. Your way of delivering the information resonate with me. I'm a computer engineer, with a bachelor's, and I wish all my studies were that way. Nothing fancy straight to the point and with an analogy to a 5yo level, perfect! I see you have done this video a year ago, I would like to encourage you to understand that you have potentially a skill that I hope you are leveraging for your benefit 😊 all the best to you! P.s. Ideas for videos: -Suspension overview and alignment specifics -Timing, combustion, running lean, common issues fixes These are latest topics I've encountered.

hey this is a really cool! I didn't fully understand PCV systems until this video :) so tyvm for your effort

Great explanation. Thanks.

I know this is an old video but I have a question related to venting. What is the purpose of venting the suction line to atmosphere. Why would you do it and what does it gain you?

love these videos :)

Thanks so much for this! I just bought a Miata NB and I’m in the process of getting to know. You deserve a lot more subscribers!

Can I delete the hot side valve cover vent if I am running a turbo and no maf? I’m on a stand-alone

Great explanation !..

Well the o2 will correct over time. But everything in the video is still correct.

after 45 years of working on my cars, I finally understood what the PCV is for. This was a GREAT video!

I wanna ask a stupid question... Recently, I was chasing a low idle on a NA8. I had had the intake manifold off to get it powder coated, so I was partly convinced the problem was related to intake air. I took off my hot side vent hose wile the engine was idling, and I felt pulses of air leaving the engine. If that's the intake side for the crankcase vent, why was air exiting the engine through that port at idle?

Good content I learning more and more please do more

Fantastic video! I may suggest adding "Miata" to the title of the video, you may get more attention and traction that way. Definitely under-rated and fantastically educational.

What would be the optimal solution for an itb setup without an intake plenum? I've seen conflicting opinions but one I've a seen a lot is deleting the intake side valve and joining both to a vented catch can. Is that ok for the engine?

Fantastic explanation. Keep them coming!

Great video. Love the simple and easy to understand format.

Thank you for your explanation! Really helpfull and clear 😀

Ah, finally understand purpose of pcv valve and the other tube.

Thanks for this explanation, its clearer than ever ! 🫡

Thank you for the very useful information.

Great explanation! it sounds like it is a bad idea then to install a catch can on the hotside vent if running a factory ECU, since the ECU will no longer be aware of the air that is being drawn by the valve cover to the intake. Would you interested in an explanation of the EGR tube on the header, and whether that could be capped off if going aftermarket headers

what exact problems does this solve ?.

Very informative and very helpful. Keep the wisdom flowing our way brother. Thank you 🙏 🤌🤙 I subscribed for this video it’s great