S5 motor from Shane at Rotaryworks. GT40 from NYT. Tial gate, rons racing radiator. Space is extremely limited, but I think I did ok with what I was given. Manifold was put together from mcMaster carr stainless elbows, RB flange, and a T4 flange. Total manifold cost $65.00 I tig'd it up last night, looks great. heavy, but I don't forsee any cracking in the future! Wastegate discharge will go behind header and follow DP down, atmosphere discharge unless it's to noisey. I've done some dyno tests in the past, and picked up 18hp at the wheels as a result of atmosphere discharge. I'm wondering though if I bring the gate into the DP further back, if that will negate the benifits, and keep things a little quieter.
3" is all I could fit, I don't see how 3.5" would have any chance unless I did some crazy through the firewall out the passenger dorr setup, and although I'm hardcore and like the idea, I wonder if I got stuck in the left lane how much a cop might like it if he pulled up on the right.

Purpose of the car? To have lots of track time, aka "track *****", and drive on the street when needed to provide entertainmet to myself and scare the crap outta others.

Dunno what color it will end up being painted, but for the beginnings of it's life, the exterior will be in epoxy primer, so flat black here I come Next week the engine compartment will be painted in the stuff, and whenever it's time to upgrade turbos or have BDC port it, we'll paint the engine bay along with the car. Always wanted to have a flat black car....



Beginnings of an interior:

Since I'm 6'4", and sit way back, I had a problem. My knees and the steering wheel wanted to occupy the same space. Solution? Go down to the roundy-round store and grab some steering shaft and brackets, along with 2 heim joints. Problem solved. I machined off the spline on the stock shaft and turned it down to fit inside of the new steering shaft. Welded it in, now the new steering shaft slips into the steering u joint like factory. Cut it to fit, make a door bar, whala...now I have steering up in my face and my legs can sit flat and comfy, the way you are supposed to drive!


Transmision crossmember:

 

Looks like it will be a wicked track car.
When that thing spools coming out of a corner with as light as that car is should be a handful. Good thing you took care of any steering issues you may have

 

omg ....
i've been wanted a 13bt big single miata for SOOOO long ....
well i wanted the 99+ style

keep us updated

 

Theo, still intersted in doing a couple sets of rails? LMK. If you need a set of stockers, I can send you mine for sizing. Carl

 

very nice.... more pics of manifold!!

 

More pics in the next few days. I'm ready to do some rails, I just need the bore size for the injectors. I'll do a set for you, np. I need more fuel rail blank, so I might end up making a few sets.

 

whats wrong with stock rails? im running 1680s in my stock secondary rail =]

 

Theo, PM'd you. NYT, The stock rails un-modified require metric adapters that neck down too much IMHO. I know plenty of guys run stock rails, but when you are trying to push 70-80psi of fuel @65gph, the fittings are a major restriction.

 

I have 1680s in my stockers as well, but it is certainly not optimum.

 

I have a S4 rail from my old motor, Tapped (-1/2" all the way thru), ready for those 1600's....PM me with an offer.

 

nice this is what miata really need a Rotary engine power...

 

Looks like its coming along nicely. I am helping a friend of mine with a similar project.

 

Cool

 

what intake manifolds are those! looks amazing

 

Looks good.

 

Jay-tech lower manifold and Wilson Manifolds 90 degree elbow.

 

OK, guys, I've been wanting to put a rotary in a Miata for a while now, but had been told that a major obstacle was the higher relative position of the output shaft of the rotary vs the stock piston engine. Was I mislead?

 

From a rolling start race I would think that in a straight line that would be about unbeatable. Awesome job man.

 

Hey Theo, you still want that clutch and pump? Or either of them? My brother wants to know. Thanks. Oh BTW, that car is the hottness!

 

Clutch yes, pump I def don't need. Paypal still ok? I should have some cash by friday.
And now, I need an intercooler as well.

 

You were mislead. If the though of making a custom oil pan and pickup make your skin crawl, this swap isn't for you. If you have the attitude I can build aynt-daymn-thing I want to, then it's relativly easy.

It took me ~8 hours of work, including thinking time, to hang the motor and trans. Cutting the subframe a bit and box it back in, and make an oil pan took the next part of the day. It's really not that hard. Car ought to handle even better than before, as the motor is MUCH further down than a stock BP motor.

 

I like Boostcoolers on Ebay for very reasonably priced Spearco Bar&Plate ICs. I think ~300.00 will get you one of the proper size. I have a 33x10x3 in my FC, cost 500.00 delivered. Carl

 

Hi Carl. I'll PM you now, I forgot to yesterday.

 

HAHAHA Rocks! My ex had a miata, and i have not talked to her in a year. So i had to send her the link! Lookin good!

Shane Smith
RotaryWorks