Right there this is what I want! This is music!

"RotaryLover" (rotarylover) 10/22/2013 at 00:51 • Filed to: Miatalopnik, ITBs

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ITBs FTW!!!!!!!

Turner950 > RotaryLover 10/22/2013 at 00:56

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172 wheel horsepower. Allegedly stock bottom end with a shaved head. (from the description)

Why would I ever want to turbocharge my Miata if I can do this? This plus methanol water injection would be incredible.

http://clubroadster.net/vb_forum/89-ro…

RotaryLover > Turner950 10/22/2013 at 01:05

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He got some Hoosiers for the trackday bro! Hahaha seriously, that's an awesome project he got there.

Milky > RotaryLover 10/22/2013 at 01:14

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At first I was only going to recommend it, now I must show my friend with a NB Miata.

Squid > Turner950 10/22/2013 at 01:14

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172 horsepower without FI costs a shit ton of money. A heaping shit ton of money. FI is cheaper, it doesn't sound as glorious as ITB's but it gets the power where it needs to be at less than half the cost of doing it with just atmosphere pushing air through the motor. Also ITB's are notoriously hard to set up to be just perfect and are really finicky for street use. It sounds like this guy is using a VVT head as the induction noise changes as he gets over 4500 RPM. I would love to have that noise under my hood, just not for what it costs.

RotaryLover > Milky 10/22/2013 at 01:17

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He'll definitely need to see this if he haven't already. Theses clips got my mouth wide open all the way though.

Milky > RotaryLover 10/22/2013 at 01:24

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He isn't much of a tuner, so I doubt he has seen them. While his car is completely stock now, he said he wants to do "something" to it in the future.

RotaryLover > Milky 10/22/2013 at 01:36

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He better do this. Forget turbos when you have that wonderful sound...

Squid > Turner950 10/22/2013 at 02:47

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Yeah that thread took up some of my time. . . I shudder to think of how much he spent on building that car. Anything with the Maruha name on it is just expensive. He went for top shelf parts and I am actually amazed at the power he's getting from the IRTB's and the head work.

ZeroOrDie - Powered By MZR > Squid 10/22/2013 at 10:09

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Staying N/A is not for everyone. I love the sound change when he gets in the higher rpms. That alone along with the responsiveness is worth it to me.

ZeroOrDie - Powered By MZR > RotaryLover 10/22/2013 at 10:38

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Mmmmmmmm love me some NA engines. The throw a turbo on it bro comments irk me a little. If it didn't come that way factory I am just not interested in it.

Squid > ZeroOrDie - Powered By MZR 10/22/2013 at 14:48

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Oh don't get me wrong, I love the sound of IRTBs and big cams. It just doesn't make sense to go the N/A route on a BP powered Miata. The gains just really aren't there. This guy has probably spent over $10,000 to chase down 170 horsepower. I know there are different strokes for different folks. But for a Miata FI is the way to go if you want to get into the 200 horsepower range. I do fully understand that the throttle feel and response between an IRTB car v. turbo v. S/C car are three separate experiences with regards to power delivery and throttle response. Believe me I wish the BP motor was more responsive to N/A modifications the sound of induction is just too damn intoxicating.

ZeroOrDie - Powered By MZR > Squid 10/22/2013 at 15:35

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Ok apparently I can't move this thing to type in it.

Anyways look thru his build thread he has both. He wanted both for different reasons. I see the pros and cons. Getting N/A power is just about the chase. Its for people that like to tinker. Like drag racers. Just need one more tenth!

Squid > ZeroOrDie - Powered By MZR 10/22/2013 at 15:55

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I spent about an hour reading it last night. I'm not bagging on his build at all. I actually envy it. I wish my NB sounded this awesome, but I would never go that route on a build myself. Emilio of 949Racing posted this miata.net, it makes sense, "150whp is bolt-ons and a good tune. Above that you need to go into the motor.
160-165whp is just a little bowl work and compression.
170whp requires more substantial head work or mild cams or lots of compression, pick one .
185whp requires mild cams (still streetable in a VVT), compression, porting. Pick two .
195whp full head work, lots of compression and mild to medium race cams.
205whp+ is pretty much a full race engine with cams that would probably never idle for street use.
225whp+ so and the life expectancy begins to shorten. Perhaps 15-30 race hrs and you're looking at a $15-20K long block."

Going N/A takes dedication and a whole lot of money. Again I got nothing against it. There are plenty of other motors are easier to massage lots of N/A power out of, it is just that the BP isn't one of them. That is all I was saying.

I do envy that guy's garage though. Two FD's and a turbo NA and this NB. Just plain ridiculous.