Eunos Roadster ITBs & HKS High Cam 264° 8.7mm & 10.5:1 Ported Head [ASMR] (とうげ) NA6CE Miata MX5

[@insid3493]

Bro, ITBs are a gift from God

[@Brickington23]

Got a 99 Miata running 4AGE ITBs too, it's getting tuned this week. Super excited to get it back and hit the road!

[@batousan_]

Love to hear an update man, how did you get on?

[@teeteetuu94]

Evokes a feel of light and nimble '60s British roadsters that don't have a lot of power, but you can keep your foot planted and have lots of fun. And that sound...

[@batousan_]

That was the plan, I don't fit in an Elan but that was kinda the idea. I homage to an Elan with a sound track to match 👍🏻

[@hashtagmiata]

The sound of your engine is music to my ears. My goal is to have ITBs on my NA8 which has a 2001 JDM BP6D swap. You're living the dream my friend.

[@batousan_]

Thank you 🙏🏻, been helping a friend map his na8 with VVT and blacktop ITBs, it sounds so good man. Do it

[@Sharpened_Spoon]

You know a guy knows, when he wears a stainless A168W.

[@jabberoo1387]

Godly intro, very classy vid! Also lovely Casio ;)

[@batousan_]

Thanks man 🙏🏻. I had the black og Casio as a kid in the 90s so thought I'd upgrade haha, indestructible 😂

[@FireflyMT]

I really love the scenery of the British countryside :)

[@TroungTran-g7v]

That steering wheel much be my favorite mod 🫡 💪 🔥

[@senahughes9761]

back in the early 2000s my dad built an mx5 just like this whilst he lived in japan, solex twin carbs, hks high cam, etc garage vary all round, bonnet, bumper, sideskirts, he loved it until it started to have issues and sold it. now, all the parts from that car are all around the world lol

[@batousan_]

Nice!! Do you have pictures of it anywhere? Considering a Vary bonnet for this at the moment, I've been trying to keep a stock-ish exterior and a slight fender/arch pull instead of widebody but some functional exterior additions are something I'm considering (like the Zoom headlight vent I added recently). Carbs are amazing, a little more continual maintenance needed than efi based ITBs but sound so, so good.

[@senahughes9761]

Yep got a few photos actually

[@lockenessmotorsports818]

My god thats stunning 😍😍

[@menosnap9393]

this is beautiful

[@MHermansson]

Love your color grading, good vibe!

[@Z3ROpercentau]

Absolutely loved the vid mate. Super happy for you & the work of art that youve created ❤️❤️

[@coreydoody1806]

What a beaut, the exposed cams looked so impressive in the garage opening scene. Keeps me motivated to improve my own NA! 😃

[@hydro5580]

insane car and awesome driving, love to see you upload keep up the great content! :)

[@batousan_]

Thanks, this was probably me getting a little too excited so will probably tone it down on the Mexican road. Track day booked for September but hopefully squeeze some more stuff in. TODA lightweight flywheel is up next, the response is already crazy so going to be 🤯

[@hydro5580]

@@batousan_ Track day with your setup is gonna be nuts, and lightweight flywheel will take the response to the highest level. I bet it will feel magical to drive lol

[@CoreyWBaker]

My favourite road around. Still shocked I’ve never seen you on it! Look out for a fellow black NA

[@batousan_]

I'm not down there as much as I used to be, usually after some major work I use it as a bit of a test run. Got a lot busier over the years. Watch out for bin lorries on that blind section around midday. I nearly got sandwiched between one and an X5 as they stop on the road 🙈

[@simonhudak3763]

Soooo good 💯

[@bombconnery]

Loved it!

[@raymondtorres9989]

Fantastic setup...Looks like this was taken in cornwall

[@Project380]

tht sound 🤤🤤🤤🤤🤤🤤🤤🤤

[@batousan_]

I think you need a "project 180" as well 😅

[@Project380]

@@batousan_ ive got the mk1 which i havnt finalized a plan with yet so maybe 😉.....

[@bugattieb110ss]

Good luck getting a 1.6 adapter manifold for 4AGE ITB's from Hummelink. I've been waiting for over a year!

[@batousan_]

Ahh man, that sucks. He sold them for quite while and did some large batches but too many people slept on them at the time, the fit an finish is so so good. Have you reached out to him directly?

[@sebreeves2863]

incredibly cool

[@slowin_slowout]

Super clean great build and love your name, i'm a fan too😊

[@floriandugoli5923]

I like the joyness of this engine to rev Impressive built, that's by far better tasty wise to keep it NA. Enjoy man ! Im planning to add ITB on my ND but nothing is available yet😢

[@hummelink-modifications]

😍😍

[@081588101]

What a beautiful Miata and what a nicely put together video!

[@samulis8275]

Needs a lighter flywheel! I had 1991 Eunos Roadster Mazdaspeed B-spec and the first thing I did I got OER FujiRacing ITB's to it. It had M2-1001 cams (or infact M2 1001 had Mazdaspeed cams), fully Mazdaspeed build engine and Maximworks full, Mazdaspeed branded exhaust and 8000rpm revlimiter. Looking at the video takes me back good 15 years to the days when I made the greatest soundtrack of our lives :D

[@batousan_]

Check out my other recent vids, you'll be proved right. Toda 3.5kg flywheel ✅

[@samulis8275]

​@@batousan_were you active in Nutz 2009-2012?

[@batousan_]

@@samulis8275 Nope, I had a MINI R53 at that time :)

[@PROofHAPPYWHEELS]

very very nice sir

[@JustinSeara]

NA6 dash is the best

[@KineticLatency]

Yeah I dunno why people change them out for NB dashes

[@SilentJayBird]

Men I Trust - Slowed & therefore deepened. Lol. At first I thought it was Boy Pablo.. derp ---

[@richardadams5754]

Hi love the car it’s a credit to you. Interested in your opinion on running ITBs with exposed intake trumpets and no filter ? I have a 93 1.6 running Jenvey throttle bodies and Jenvey foam sausage filter. They look great but it can’t do the engine much good long term sucking in all that dust dirt grit etc.

[@batousan_]

I tend to run open trumpets on track but mostly a filter for road driving, especially in non perfect weather as the headlight vent has a direct path to the stacks so stones etc have a small chance of getting in. That said, I know people who have done many, many miles filterless without issue, I would imagine most of the road dust and fine organic matter simply gets burnt up in combustion process without issue its not like you are shoving handfuls of sand down the stacks so I woudn't worry too much. 🤞🏻

[@floodtheinbox]

It sounds like Hermes clearing his throat

[@guiguitonicmotorsport]

Amazing sound ❤ You thing how many HP around 150hp?

[@michaeljanecek4863]

I just went turbo but I’m kind of regretting not going with itb’s instead

[@batousan_]

The Subaru fulfils my turbo needs, in an ideal world i'd have 2 Roadsters one low boost ,comfy, slammed turbo for cruising around and this one for being a hooligan.

[@sirhatrick_8980]

what kind of camera do you use? I like the vintage and cinematic vibe it got

[@batousan_]

Fujifilm xpro2, and a collection of lenses. There are better cameras on the range for video but it does the job 👍🏻

[@b6eunos]

Hello from cousin B6!!

[@zBalistiqRain]

Ugh incredible roadster man i drooled all over this 🫠 do you know how much of a deep dish your nardi is and what diameter? Having rubbing issues with my wooden 350mm nardi that came off a eunos and i don’t wanna downgrade to anything less of bad ass so i wanna go for a smaller nardi and possibly a deep dish? Is that the standard nardi boss or something shorter/extended?

[@batousan_]

Thank you man! Mines a 350mm, depth to wheel rim is 138mm including boss, the nardi depth is approx 68mm. Hope that helps 👍🏻

[@idokwatcher2062]

Pulling the trigger on this expense easily means giving up on another sports car purchase (e.g. Porsche). It takes courage if you're not rich.

[@batousan_]

In someways if you are starting from scratch it can be expensive but I've owned the car for a long time and the costs have been spread out over time. I do all of the work on the car myself which saves a huge amount as opposed to paying someone to fit and tune everything. I'm certainly not Porsche money into this car yet, my only regret would be not buying a 964 when they were still affordable but that was well before the I had the Roadster.

[@sss_jstn]

You should use the kanji for Touge (峠)

[@SchlechteBewertung]

how much HP did you get out of that 1.6? because i think of wapping my 1.6 to an 1.8 first and then do all the work to it? Would you recommend to stay 1.6? i know they are a bit mor fruity and reving but lacking in power i've heard. My 1.6 115hp is ok most people say swap for an 1.8. Its like 1-2k extra kost but is a jump start to 130hp. :D would love to hear your opinion on this :)

[@batousan_]

I haven't yet dyno'd it, the ecu is road and track tuned but would probably benefit from some dyno time when I get round to it though. At best without touching the block 100hp per liter is usually possible on a 1.6, as I've done this gradually over time the parts crossover from 1.6 to 1.8 is not possible so I'd have to start over which is quite the expense. If you are starting from scratch and looking specifically for power then I'd advise the 1.8 VVT. I just really like my original engine and how it responds/sounds, had the car for 10 years and done about 67,000km in it myself with 220k on the clocks, even when I finally overhaul the block I'll keep the 1.6 but use new pistons etc. It goes well enough even if it has half the hp the Subaru has 😅.

[@SchlechteBewertung]

@@batousan_ thanks for the detailed answer you are the man!

[@indeathsembrace666]

All the specs but the horsepower

[@jacobduncil4702]

what wing/spoiler is that? tis a beautiful car.

[@batousan_]

Thanks man, its an OEM JDM Factory fitted Type A Rear Spolier (Floating Type)

[@stankhunter666]

I love miatas had like 4 to 5 na honestly the only thing I hate about them is they break alot been threw engines and transmission and a few diffs love these cars but hate fixing them over and over probably sell the one I have now soon

[@batousan_]

Damn, thats such a shame. This has 220kms on it at the moment, original stock block and transmission and its been driven like the video demonstrates both on track and the road. I'm under no illusion it will last forever but I've found it really reliable and easy to work on so far due to space/access/design. I think once you go turbo and put too much boost down low it does have a habit of eating transmissions and the risk of engine issues. Its one of the other reasons I stayed NA on this, just so much lighter on the car (still using a 1.6 clutch too). I have now fitted a Torsen 4.3:1 with the larger ring gear/diff though.

[@zethweb7999]

Is this near "The Motorist" by Leeds? Roads look familiar. If not and youre in yorkshire, the motorist is a great place with great roads around it

[@batousan_]

Its not in Leeds no, I'll check that out whenever I'm up that way though :)

[@Throttle.Monkey]

Nice! I’m assuming it’s not a daily?

[@batousan_]

I ran this car as a daily for 4 years as my only car at the time, I would have no problem doing the same now if it wasn't for the state of the roads and size of speed humps so I'm a bit more selective where I drive it. Its done 8000km since the ITBs in the last year and a half. I tend to avoid driving it during the winter months or when theres salt on the road as I want it to last many years. 300hp Subaru Forester STI on Ce28N and coilovers is my daily driver ✌🏻

[@Throttle.Monkey]

@@batousan_ good combo! I’m torn at the moment between buying a nearly new MX5 ND and spending money on mods making it something special (suspension, cams, exhaust etc.) or a getting a low mileage GR Yaris. I only have space/funds for 1 car so it needs to do the daily duties. Judging off what you use as your daily the Yaris would probably be the sensible option for me.

[@batousan_]

@@Throttle.Monkey Both really quite expensive new or close to new, you can pick up a used ND for reasonable money though. If you can stretch to buying two cars by going used then you wont have to compromise on enjoyment. They are both so different, I've never really used my sensible head apart from on the Subaru, I really wanted a jdm bugeye STi but decided a big boot would be more practical so imported the Japan only Forester STi... given the boot is currently full of Hankook RS4s and wheels it was the right choice 😂

[@MrTAKIS1984]

Hp result? Rpm idle ?? Sounds sweet

[@MrTAKIS1984]

Do you have a good lowend? I know someone who under 2k doesnt feel something

[@batousan_]

I mean it feels fine for driving around normally and not underpowered but the power is more up top for sure. My other car is a Subaru STI so its hard for me to judge exactly which has way more torque of course. I tend to drive this car more up the top of the rev band anyway, because thats how an NA car should be 😊

[@flound3rpuss362]

What a lovely car. What does it rev to?

[@batousan_]

Thank you 🙏🏻.Max RPM is set to 7550, still on HLA and OEM valve springs so pushing it a little but the soft limiter I have set starts around 7300-7400ish.

[@mr.adventure559]

How is the low end torque? Street manners and all that?

[@batousan_]

Drove 4 hours in it yesterday mostly motorway with some smile inducing roads at either end. Around 120kph crusing at 3500 to 4000rpm is not quiet but no problem leaving it in 5th and moving around traffic. The link ecu makes it really smooth and I've spent more time on the driveability mapping than any pro tuner would be practically be able to do (ie keep your car through all 4 seasons of the year lol). Torque is fine don't need to rev it out to make progress, and its a joy to drive short shifting too, but it hard for me say given I'm used to my other car which is a 350hp 2.5L turbo boxer 🤷‍♀😅

[@jwrx7tt01]

No passenger side mirror?

[@batousan_]

Ha, there is one but the slight angle of the camera means its just hiding behind the headrest of the passenger seat more so than the driver side (the camera mount is offset to the passenger but angled towards the driver).

[@47kotzur]

What power does it make?

[@batousan_]

Asking how much power an ITB build makes is like asking a woman how old she is, take a guess and keep it to yourself 😂😂. What would you expect from a 1.6 NA ITB build? In all seriousness, I haven't dyno'd it as of yet as I've been road tuning and getting year round driveability perfect and adding parts to the build. I think next year I'll get it on a dyno for sure tho.

[@47kotzur]

@batousan_ when you do, let me know 👌

[@batousan_]

@@47kotzur Will do, do dampen your expectations 1.6 builds usually max out around 100hp p/litre, maybe a tad more with a full engine refresh. Saw one recently with a full refresh, ITBs, cams etc and it made 167-169bhp which is pretty amazing for this engine. If you need more, BP VVT build or engine swap is the move. 👍🏻

[@47kotzur]

@@batousan_ In curious. Not gonna lie

[@ISR403]

I think I busted

[@Agraviadore]

"touge" is a mostly straight road.

[@batousan_]

The first clip and the start is a straight, maybe watch the rest? Round here that's as good corners you'll get, I wish we had better 🙏🏻

[@Agraviadore]

i watched the whole thing. Its mostly straight. and the corners are 20 degree turns most of the way. Go look at a proper touge as they are in Japan where theres few areas that are straight for more than 50m and the rest of it is curves. Gunsai touge and the touge course at Ebisu circuit are prime examples

[@batousan_]

​@@Agraviadore I'm sorry you didn't enjoy it, I wish I could do better but this is sadly the best we have, a touge is loosely defined as a "pass", there is no clear definition of how tight the corners need to be and it can differ depending on region. To me the touge is a your nearest road with the most corners that helps you de-stress your life. I've been to Japan a number of times and I have seen and been on roads that you are talking about, I've watched so many old BM and Vopt through my teenage years and still now as a adult, what you start to see is each region of Japan has some variation in roads as the topography changes based on region but nobody argues about what the touge means to them. Enjoy what roads you have and drive your car. 頑張って✌🏻

[@Agraviadore]

@@batousan_ it was a good video. I was just expecting some proper twisty roads. I kept waiting for the first tight turn and it never came. I guess you'll have to find somewhere more mountainous or rocky

[@batousan_]

@@Agraviadore Its a 8-12hr drive to mountains, this is 10mins away and I know it well, the only downside here is traffic. Do you find the roads are absolutely shocking due to poor investment? There is a longer version of this but I stopped running that section due to subsidence at the edges (the road is literally falling away) meaning you'd have to put the car at the centre of the road to drive fast which is not something I do, I had to replace one of the Work Equips due it taking a big hit on that section. If I took the 8-12hrs I'm not sure I'd have 4 straight wheels by the end of it, I have been to better places in this car but the last time, I took the Subaru instead, there are actual bits of road missing and craters that would swallow the Mazda. Also bear in mind I'm using a 10mm Wide angle lens which really straightens out the viewpoint, some of these corners.

[@mwwtt2875]

You filmed this near where I live bro, drop your insta, would love to join you