N/A chikara miata laps tsukuba
 

This video has just made me very proud of our cars. The first time a naturally aspirated miata set a time almost in the under 1 minute range at tsukuba. I timed a 1:00:86. This is the Chikara blue ITB miata with its sequential tranny and hundreds of lbs of downforce.

http://www.youtube.com/watch?v=mmvd6...e=channel_page

It wont embed right so i dunno whats up with that

:facepalm: embedding :facepalm:

Haha, thanks man. It happens to the best and worst of us

I want that transmission...without the shitty service intervals of course.

I was thinking the same, but on a full out racecar that only sees the track it shouldnt be that big of a deal. I wish they had stuff like this in the states. That was my first time seeing a miata with a sequential at all. I also didnt think that the motor could even make it at 2.1L as the cylinder walls get really thin at even 2L

Durability trouble? Just do a V8 M3 motor swap and use the new M-dkg tranny!

actually, I was wrong. I thought it was a dog box but he's using the clutch. I'd love to know about the trans in that car.

They're expensive to make but would be well worth it. probably anywhere from 10k-20k to get one built. I knew there had to be something like that for miatas somewhere in japan. The thought of a sequential on a miata race car always sounded quick to me. You can save alot of time that way

That car does not belong to Chikara, it is Garage Hundred One's car.

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http://farm1.static.flickr.com/221/4...8c856d3f_o.jpg

http://hundredone.cocolog-nifty.com/...d/cimg2570.jpg

http://hundredone.cocolog-nifty.com/...d/cimg2571.jpg

http://hundredone.cocolog-nifty.com/...d/cimg2572.jpg

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http://hundredone-bluedemo.cocolog-n...d/cimg1920.JPG

GARAGE HUNDRED ONE issue blue TUNINGSPEC
Vehicle Model: NA8C

Engine
Maximum Output: 320PS (315hp) @ 8500 RPM
Maximum torque: 35Kg (253 ft-lb) @ 6,700 RPM
Built by: Maruha Motors
Displacement: 1930cc
Bore × stroke: 85.0mm × 85.0mm
Compression ratio: 12.7: 1
Intake system: TOYOTA 4AG individual throttles
ECU: MoTeC M48-ADV ROG
Ignition coil: MoTeC
CDI: MoTeC
Cam: Toda Racing 300 degree 10.7mm lift
Lifter: Toda Racing shim under bucket solid mechanical type
Valve spring: Toda Racing strengthened type
Timing gear: Toda Racing adjustable
Piston: Toda Racing forged 85.0mm φ
Connecting rod: Crower
Crank: Original crank lightened and polished
Head Gasket: Toda Racing 0.8 mm
Oil cooler radiator
Nitrous oxide: Dry shot × 8

Drivetrain
Clutch: ATS carbon clutch
Transmission: MATSUDA SUPIDO FURUKUROSUMISSHON (???)
LSD: ATS carbon LSD
Final Drive Ratio: 5.1:1

Suspension
Shock absorber: OHLINS MH-P
Spring: Swift F 13Kg R 11Kg
Control arms: Manatee Racing adjustable
Uprights: SP-TEC

Tire/Wheel
Wheel: Panasport F: 15X8J R: 15X8.5J
Tire: Yokohama A048 F: 225/50-15 R: 225/50-15

Brake
Brake rotor: For NA8
Brake pads: F: ED CC-M R: ED CC-M

Body
Body reinforcement: Increase spot welds + roll cage
Front spoiler: Garage Hundred One wide body
Hood: Garage Vary lightweight type
Door: FRP lightweight
Hard Top: Garage Vary lightweight type
Over Fender: NOPRO

Tsukuba Circuit 2000
1:00.307 2004 REV Super Battle Official Records

cool brake valve.

This video really makes me want to sell my turbo and build an N/A motor...I know its slow and expensive....but there is just something about it...

Yeah there's just something about it. I'll make sure to use you as my urinal at the next track event in your awesome NA car.

i found the section that is all built motors and from some reason there it;s all nas with 01+ vvt heads... hmmmm i think the japs are on the something
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solid lifters FTW.

Needs a coolant ReRoute. :giggle:

So is the Rated HP and Torque w/ the Nitrous Shot?

Chris

Slow!? Do you realize he set a 1:00 laptime around tsukuba? thats fast as hell for any N/A machine

This is at a later time. Hundred one is afilliated with chikara and maruha but my mistake it is garage Hundred Ones car.


Maruha Mahle Custom Piston

luckily it doesnt have the heat of a turbo

I'm calling BS on this. There is no way to get 253 ft/lbs without FI on any 1.93L engine. Horsepower can be gained with revs, but torque is a function of displacement and efficiency. With correct intake tuning efficiency of an NA engine can reach up to 110% (slight forced induction by using aerodynamics of an intake) but 1.93L and 253 ft/lbs doesn't add up NA. Even the GSXR 1000 only makes 87 ft/lbs per liter, and that's a bike engine! Anyone who thinks NA Miata engines can be compared to Honda K series, let alone supersport bike engines needs to look at dyno graphs. The highest torque I've ever seen from a BP motor is in the 140s.

In short, this motor is not more sophisticated than a bike engine and an F1 engine at making torque. BS.

Engine
Maximum Output: 320PS (315hp) @ 8500 RPM
Maximum torque: 35Kg (253 ft-lb) @ 6,700 RPM

More information at this link, from garage 101.

tetsuyagarage

Full Spec-

Power:

* Engine: BP
* Pistons: Marri(?)
* Rod: Maruha
* Crank: Maruha
* ITB: JENBI/ Maruha
* Overbore: 2040CC
* Radiator: Tabata
* Ex. manifold: Maruha
* Engine Cover: Maruha
* ECU: Motec
* Muffler: GHO One Off Titanium
* Sequential Transmission
* Estimated HP: 218

Handling/ wheels:

* Ohlins MH,
* Swift Springs 13Kg Front, 11Kg rear
* Manatee Control Arms
* Weds: 15x8.5 +5 offset
* Advan A048

Exterior/ Interior:

* GHO Original Front Bumper
* GHO Original Hood
* Nopro Flares
* GHO one-off Trunk
* GHO one-off Rear Garnish
* GHO Original Mirrors
* Stripped interior
* GHO one-off Carbon Fiber Dashboard
* Motec Dash Loger
* Weight (Tsukuba TT: 836 Kg), Maximum Possible: 796Kg

NA power at its finest. It did that with 218hp.

I can believe it if the car has nitrous as preclaimed

I didn't happen to see any mention of nitrous on the website I saw representing the car, and a power figure of 218hp. Not saying it's not true, I really don't know. Can anyone look at this picture and tell me if they see nitrous plumbing...

http://www.tetsuyagarage.com/GHOTTcar/gh2.jpg

Could that be the red tube?

It could very well be the red tube. I dunno, clean engineering is so well executed by the japanese that you really cant decipher anything

The only problem I have with it being the red tube, is that if it's not, where's the vacuum coming from on the intake manifold?

The red tube has got to be a Vacuum manifold

I doubt it has nitrous, You can get NA numbers like that with enough work, and by the looks of it that thing has a lot of time and money in it.

I'm not sure why you're comparing it to a superbike bike engine. They always have, and always will be torqueless. It's built to be reliable for thousands of street miles, not for all out racing. Not to mention I don't think torque/liter is linear.

I went on a very long explanation of why they cannot get those numbers NA earlier in the thread. Horsepower, possibly. Torque, no.

I didnt see the torque numbers, are they claiming an impossibly high brake mean effective pressure?

Maximum torque: 35Kg (253 ft-lb) @ 6,700 RPM

NOT happening with a 1.93L N/A engine.

O shit, I thought they said they were making 215 hp, not 315.
315 hp/250 ft lbs is impossible, those numbers have to be with the nitrous...


BMEP = 150.8 x TRQ / Displacement

1930cc = 117.8 ci
150.8 x 253 ft-lbs / 117.8 cu in = 323 PSI

Its pretty widely accepted that 190-200 PSI is the limit for a otto cycle engine
Not even Formula 1 engines exceed 200 PSI by much.
So yah, those numbers are impossible without nitrous of forced induction.

the vid and my source says 2.1L but whatever. maybe the car has been tried with several setups. I know they have the money

Lets say that they put huge amounts of money into the engine and really maximized it in every way and were able to get a brake mean effective pressure of 200 psi.

200 psi = 150.8 x TRQ / 117 ci in
TRQ = 155 ft lbs

so the maximum torque output possible would be around 155 ft lbs

now lets say that they tuned the power band so it makes peak torque at 8000 rpm, for maximum power

155 ft lbs x 8000 rpm / 5252 = 236 hp

so there yah go, the maximum output of a 1.93 L engine in the sub-9k rpm range is going to be 155 ft lbs/ 236 hp


EDIT:

but yah, for a 2.1L engine it would be 170 ft lbs and 259 hp at 8000 rpm

And 200 ft/lbs of torque would be F1 tech with F1 money, and NOT a Mazda head on that engine.

I just ran the figures...

Their 2.1 L motor?

Actually 2.044.

Their stroker kit gives the same as the Flyin Miata stroker kit, but FM just doesn't like to bore out the engine to 2.5. They will if you want, though.

MATSUDA SUPIDO FURUKUROSUMISSHON
"Mazda" "Speed" and I think, "Transmission"

I didnt even have the slightest clue that mazda was making sequentials for miatas. I could see rx7&8s but this one caught me off guard

Mazda isn't. The trans in that car is a modified HKS sequential for and FD, about $17,000 before the custom bellhousing.

Pretty cool but I noticed the driver taking noticeably more time to complete shifts than I do in the OGK. He was also using the clutch. A bit odd since its certainly a dog box. Using a Motec, they should have been able to set up a shift lever position sensor as a trigger for ignition cut. That would have allowed flat clutchless shifting. In the OGK, we use the clutch but they're nearly flat shifts.

Anyway, the last few days I've been dreaming of that damn HKS..

Thats a great idea. I dont blame you for dreaming of it either, but for that price tag you may as well buy 5 more miatas
or a shitzen of parts

XS-Speed

1.8 litre built engine IRTBs 9k redline = 214bhp (180rwhp)
I happen to know the owner of this car very well as we were the first people to run the K3 ECU system and we help each other out. 100bhp/litre isn't hard if you aren't a complete tool.
The engine was machined by a F1/Powerboat engineer for considerable cost but the power is WAY better than any FI car I've been in.
The engine management was done by the designer/developer/builder of the ECU system and consultant to many race teams Dave Walker.

Not the most shabby effort but it was meant to be a development project but the economy has screwed that for us all so only the chosen few can get similar parts.