Virgin Head...Friday night engine porn NSFW :)
 

I came home tonight to find this box on my doorstep. It contains what is supposed to be one of the two final 1999-2000 virgin heads that came from the Mazda Japan warehouse. After this, no new production, no NOS unless you can find it collecting dust on a dealer's shelf.

Who's got the other last head? This guy. :)

That's beautiful.

Now hack it up :giggle:

Needs to get dirty, or put in glass on the wall

Since they're the last heads from Japan, I feel it's my duty to get as much friggin' horsepower out of them as possible, while still being street-able of course. We're nearing the end of any type of "new" development of the Miata mill, so it's incumbent on me to use the knowledge of those who have come before to tune the shit outta these heads.

There's a road map planned to take me to 180whp NA, and beyond. :)

Guess why?

Cause I have 3 of these in my garage...that's why.

That would make you a "whore-der." :)

They say whore-ders have mental issues...I say that might be true.

That's an MSM head, not a 99-00 head. Just FYI.

Why aren't you using a VVT head?

Because it is

DUH! MADTIGHTJDM4LIFE!!! :loser:

Did not know it was MSM, thanks.

As for no VVT, mainly to keep it simple. This is an old skool engine and I'm treating it that way.

How do you tell em apart?

It will cost you a 150% more for only 10% performance increase.

Coolant ports

Have you not seen my other projects?! No one has ever accused me of my Spock-like logic.

nothing wrong with you preferring to molest virgin heads


they're so much tighter :party:

Well played

Now THIS is what I expect when I put "virgin" in the description. :rofl:

I got one of these a few months ago too. I thought they were unavailable, but have a good connection in the dealership circle.

I think it was around $1000 bare though.

That's a bit more than I paid, but they're not cheap given the price for a used complete engine. However, I've got a build plan for an engine--nothing fancy--but I want the engine to seem like the equivalent of a completely new engine.

By "nothing fancy" I still mean 180-200whp on pump gas, NA.

*impatiently waits for build thread*

After reading Quinn's build over on cr.net, its had me thinking about building the BP4W head I have sitting on the shelf and skipping VVT, but I'd hate to give up the low/mid range torque.

I like Emilio's method of building, confirming and then telling. My bench-racing skills are legendary for their inflation factor. :)

I've heard that as an excuse for not installing a larger turbo (don't want the lag of a bigger unit) except that on the track or during spirited driving yours rpm's will already have negated that point. BTW, I'm not advocating a position but just making an observation.

*impatiently awaits telling thread*

Well I am thinking if getting rid of my turbo setup and to simplify the car into a more reliable track car (before I spend money breaking things).

Ah, no. The idea that VVT engines only make additional torque below the lowest RPM seen on track is quite fallacious. Especially with a 5-speed, ~4500rpm is not an unreasonable minimum RPM to expect on a road course.

My point is that larger turbos have a reputation for producing more lag than smaller turbos, which is true. However, in a track environment your rpm's are usually high enough all the time to keep the turbo spooled up. At a stop sign from idle, different story.