Turbo 20b Swap (No longer NA)
 

Updated 5/14/2019 -

Looking for a new eshaft. The original one is out of alignment, and in such a way that it cannot be straightened. This will not effect it's use, but the RPM limit has been limited to 8500 RPMs by Rick Engman. That doesn't work for the NA plans, so I need to find a new one.

Goal 450WHP

Mazmart
B series motor purchased. Reliable source, and on the shelf.
Iron lapping

Built by Myles Fisher
Large Street Port, and semi pport
OE Seal kit
17pc Goopy 10mm stud kit
I-Rotay apex seals

Chip Motorsports
Rotor lightning, clearancing, and balancing 20b rotors
GOing to have to do the 9.7 rotors now... lightning, balance, scallop, and clearance.
Billet oil pan

Fabrication by Coffee Fabrication
Flaming River custom steering rack. Little faster ratio than stock
MK3 MR2 Electric power steering pump - eventually. May end up doing it myself.
370z transmission mounting.
Reverse mounted hood to open to the front - eventually

Drive-train / Engine Parts
Xcessive Engineering Short LIM
6x ID 1050 injectors
Adaptronic plug and play ECU
20b crossmember from Promaz
370z JK40C Transmission

Body
2012 Spirit R head lights
Autoexe Type C hood (Will be replaced with a one off hood by MPH Fabrication)
Autoexe duck-tail trunk
Leg Motorsports RX Vision front bumper (Being remolded by MPH Fabrication into dry carbon with carbon zylon inserts)
Lions Kit S2 over fenders - will replace with metal eventually.
Marsh Powerhouse Fabrication carbon zylon roof
RE Amamiya carbon tail lights
RE Amamiya AD Pro fender mirrors
Vertex Lang rear bumper
Vertex Lang side skirts (May change)

Misc Parts
Autoexe big brake kit
Autoexe S1 steering wheel
Autoexe ball type shift knob
90's Mazda Speed seats
Volk SF Challenge wheels

tag

Sub

Hell ya!!!!

Yes!

Sweet, I can't wait to see what your intake manifold(s) will look like.

I remember when 20B were only a few grand not too long ago on ebay. Now you gotta spend 7k, and not even be guaranteed that the motor isn't junk.

red can you post some pics of the motor build when its happening?

I bought one before when they were $3k. It was never delivered, and I never got my money back. This is why I went with Mazmart. They're on the shelf and it's a reliable company.

Really depends on the builder. he's not touching it till May, and doesn't expect it complete till June / July. I'll ask, but I don't want to inconvenience him. I'm sure he'd take a couple though.

i figured since it was mazmart they would snap some pics for ya. great company

Mazmart isn't doing the actual build. Just bought the block there. I couldn't afford Engman's time...

We'll hot damn. . . can't wait to see this beast!

Glad to see more 20B swaps! Can't wait to see this develop.

Matt

Myles picked the engine up from MazMart. Probably wont really be any updates till after DGRR.

Cutting more weight...

Titanium front nut and flywheel nut. Supposed to remove about 1/2 lb from the rotating assembly.
https://cimg2.ibsrv.net/gimg/www.rx8...07bb652f5f.jpg

Considering how much you'll eventually be spending, why not drip a few more drops of blood into the pot ...

Rooting for you though, this is my dream build if my numbers ever pop up on the lottery ...

Best luck to you. :grouphug:

Thanks buddy. Parting gift from my ex wife and the house she had to pay me for... lol

Some people might be curious about the rest of the car...

LEG Motorsports RX8-Vision carbon front bumper
Vertex Lang sides and rear bumper
Panspeed wide front and rear fenders
AutoExe SE03 hood
AutoExe SE02 duktail trunk
RE Amemiya carbon tail lights and AD Pro fender mirrors

Probably a couple more things before it goes to paint (after the engine).

this thread is enough goddamn reason to give us the like button back

*Like*

Seats are back from fabrication shop. They have feet and are ready for the RX8.

https://cimg2.ibsrv.net/gimg/www.rx8...7e92b38024.png

Nice work! I wouldn't even want to sit in those and potentially ruin them.

Awesome build. Those seats are horrendous though.

red i love your build but hate the color red and i gotta agree with 9k on the seats

Sub'd
+1 for 9K's comment

Hopefully I'll have some more substantial updates in the next couple months. Car is at the body shop and engine is with the builder.

Spirit R headlights are in!
https://cimg5.ibsrv.net/gimg/www.rx8...6c09d95bb0.jpg

Can't wait to see how this turns out, might go the na route myself

PROMAZ crossmember on it's way. Thanks for finding this Team. Saved me a lot of time and money in the long run.
https://cimg9.ibsrv.net/gimg/www.rx8...9a81584e2a.jpg


Xcessive Engineering short LIM with Full Function Engineering fuel rail and 6 ID1050 injectors arrived.
https://cimg8.ibsrv.net/gimg/www.rx8...3151addd07.jpg

Just a couple updates. Pineapple Racing 1pc solid dowel, and Goopy Performance 17pc 10mm stud kit. I think the irons are with Mazmart getting lapped.

Also for some new wheels. Volk SF Challenge 19x10.5 for the rear and 19x 9.5 for the front.
https://cimg6.ibsrv.net/gimg/www.rx8...b1b28180ab.jpg

Staggered and 19”? Must be 2fer phail day ... :icon_no2:

Street car so don't care. This car will likely never see the track, and if i does, it would be with dedicated wheels and tires for that purpose. This car has had staggered 19's on it for almost 10 years.

Should have told me you had a build thread.

Subbed... I like the Seats personally... They remind me of alot of the cool factory seats you find in the 90's out of japan... I think Nissan and Honda had some of the best patterns... I like the color too.

This will be good reference if I pull the trigger on a 3 Rotor build or not...

Given the cost of 19” tires you should care a lot. Stagger prevents you from properly rotating tires fore-aft.

As someone who frequently runs properly wide, both staggered and squared wheel setups on their cars... My experience is the staggered setups have the best road manners - Op specified this was as street car, so naturally that is what you want. As far as 19's go Large Diameter wheels also tend to ride better since they "fall" into large cracks and small potholes less.

I wouldn't run 19's either, but there are good reasons for doing it, and it will look good.

If I can afford a 20b, $500 - $1,000 a year in tires isn't much of a concern to me. At least the car wont be "Stanced"...

A 19" rim is too large of diameter is what I think they are getting at, however, I could be wrong. 19" is like a show car rim :icon5:

Maybe I missed it, as I am going to be doing the same thing here in the near future with my newly acquired 8, what is the purpose of your build?

Thanks,

Nick

They don’t fall in less unless the tire OD is increased, which tends to be an issue with any lowering on an RX8 especially when going wider too. Generally speaking they’re heavier with shorter sidewalls and more likely to take pothole damage. If you want road manners go buy a Lexus rather than stick a 20B in an RX8 chassis, but that actually might make sense. If that’s what he wants it’s not necessary for you to make lame arguements on his behalf because what he wants on his car is all that matters.

19's are stock on 09+ cars. The argument is basically staggered vs square, and overall weight. Team isn't wrong on that fact that my setup isn't ideal performance wise. It's just ascetics. It's also not a track car.

Narrow 19”, and I was against that too.

Still looking forward to seeing you get ‘er done! :)

Let me know if you need a pair of Panspeed rear flares :suspect:


.

Actually, I have panspeed front and rear fenders already. They will be widened a little extra though, and the front will be modified for S2 lights.

Sounds good, just realized that it was someone else that had asked me.

Where'd you source those spirit r headlights? I need something cool like that for my 2004 LOL

Mazmart. They're not chep, and you'll need the adapter harnesses, all the mounting brackets, and an S2 09+ front end swap.

19" Volks FTW. Love the SF', my buddy has almost the same specs on his 8.

Have to admit that looks sweet!

ProMaz in Australia has a universal subframe they've made.

this is what i think a 20b should be used for.

Thought I'd give an update since it's been a while.

With the S2 swap the Panspeed fenders will require too much work to match with the S2 lights and to widen them. I have gone with the Lions Kit V2.

The eshaft is out of alignment, and the kink is too close to a lobe to be straightened. Per Rick Engman the motor will have an 8500 RPM redline, max do to the shaft issues, but should be fine otherwise. This makes the original NA build pointless, as to reach the power goals, we would need to spin it higher.

Rotors are back from Chip Motorsports. Lightened, balanced, and side clearanced. Image attached.

An adapter kit has just been released for the 370z JK40C transmission to bolt to rotary engines, so I'm going that route for the transmission as it should hold a LOT more power than any of the RX8 solutions at a reasonable price.
For anyone interested in the transmission adapter: JK40C/CD009 Transmission from 370Z on 13B

The motor has been large street ported, and it will also have a small half bridge instead of the semi pports.The setup is changing to a single turbo, and vmount setup. It's scheduled to go into the fabricator March 3rd to have the turbo plumbed and for a little "Hammer Time" on the tunnel for the new transmission. Hopefully I'll have everything else ready before the fabricator, so once he's done, it can go straight off for tuning. Going to try and have it ready for DGRR 2019... We'll see how that goes...

Anyone interested in a set of Panspeed wide fenders, and EvoR carbon fender vents?
Also have a 5spd transmission I wont be needing...


https://cimg3.ibsrv.net/gimg/www.rx8...dded0f2d68.jpg
https://cimg6.ibsrv.net/gimg/www.rx8...514d893adf.jpg