Okay, maybe I am dense or missed a post... In post #471, I see two different manifolds. The first has the turbo flange offset towards one end and looks like a log style manifold. The turbo flange on the second looks centered and more of a 4-1 style with the two center cylinders having short runners. Which is representative of the eventual production design?

It's two pictures of the same part. If you see otherwise, it's your eyes deceiving you. The turbo flange is centered on the #2 runner. It is not a log manifold by anyone's definition - it is a true 4-1 tubular-style.

Its just the angle of the picture that hides the runners in the first picture.

Top-down shot to help you:

Attachment 237725

Video walk around with naked commentary?

If you've posted in this thread (in the last 100 posts or so) exhibiting interest, you have a PM in your inbox with details on how to participate in the group buy.

For the lurkers out there, here's the same info:

The price for the manifold alone without a turbocharger will be $550 for this group buy.

The price for a manifold and a turbocharger will be $1900 for this group buy.

These prices are limited to the first ten people who respond. Expect retail pricing to be 15-20% higher.

If you're interested in participating, send an email to info at trackspeed engineering dot com with your full shipping address and PayPal address. I will send a Paypal invoice to you with the full total including shipping and taxes where applicable. If you are local to our Sunnyvale location, we will allow will-call on the parts when they arrive.

Details on the downpipe to complement this setup will be forthcoming in the next few weeks. Retail on the downpipe should not exceed $400, and group buy pricing should be under that.

Current expectation on shipment of production parts is approximately 20 weeks from today.

What changed?

The price.

Fiddy bucks ain't gonna break you, Scro.

I can't afford to sell them at that price unless I'm bundling them with other parts that I can make money on. I don't want to punish the guys who already own turbos, but selling parts at your cost is not how the lights stay on.

Email sent...

So, after Miatas @ MRLS 2015?

Yes. I am going to try really, really hard to have the first-article at MRLS, but there's no way the production stuff makes it in time.

In for baller shit. Ordered me a manifold and 6758.

Bah! Just spray paint the PLA SLA model silver and install it. Tell everyone that's how good investment cast really is. Keep EGTs under 180°C and you should be fine ;)

Email sent.

I'll be all smuckers over it until next spring. My NB2 will run through the winter on an EFR6258 and stock shortblock, but the setup I really want involves a built shortblock, EFR6758, and E85 :party:

I'm amassing parts for a built motor at the moment. By the time thid thing actually gets installed, the car will be ready. This is still a 1-2 year project. I'm going to take my time, but the price for a killer turbo and durable, well designed cast manifold doesn't seem like its possible to be beat right now.

Email sent.

All emails have been replied to. Jeff, I don't see one from you - make sure you sent it to the right place. Found it.