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NA SemiPP 20b

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NA SemiPP 20b

Old 03-06-2017, 01:01 PM
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Turbo 20b Swap (No longer NA)

Updated 3/8/2019 -

No longer an NA build
The eccentric shaft was fount to be 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. This being the case, to make decent power before that point, FI it is. I'm seriously considering a TVS2650 supercharger.

Goal 600WHP+

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

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

Chip Motorsports
Rotor lightning, clearancing, and balancing
Billet oil pan

Fabrication by Coffee Fabrication
Flaming River custom steering rack. Little faster ratio than stock
MK3 MR2 Electric power steering pump
FI plumbing
370z transmission mounting.
Reverse mounted hood to open to the front

Drive-train / Engine Parts
Xcessive Engineering Short LIM
3x ID 1050 injectors
3x ID 2250 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 hod by MPH Fabrication)
Autoexe duck-tail trunk
Leg Motorsports RX Vision front bumper (Remolded by MPH Fabrication into dry carbon with carbon zylon inserts)
Lions Kit S2 over fenders
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 ****
90's Mazda Speed seats
Volk SF Challenge wheels

Last edited by reddozen; 03-08-2019 at 09:52 AM. Reason: A lot has changed...
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Old 03-06-2017, 01:15 PM
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Old 03-06-2017, 03:20 PM
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Old 03-06-2017, 07:40 PM
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Hell ya!!!!
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Old 03-07-2017, 07:22 AM
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Originally Posted by reddozen View Post
[...]
Wiring by LMS-EFI
AEM 710 ECU
Stock ECU retention for OBDII readiness checks, AC, etc
Relocate both ECUs from the engine bay
Full engine bay rewire and wire tuck
Maybe relocate / hide stock fuse box
Yes!
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Old 03-07-2017, 11:06 AM
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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.

Last edited by strokercharged95gt; 03-07-2017 at 11:15 AM.
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Old 03-07-2017, 11:46 AM
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red can you post some pics of the motor build when its happening?
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Old 03-07-2017, 12:07 PM
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Originally Posted by strokercharged95gt View Post
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.
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.

Originally Posted by 200.mph View Post
red can you post some pics of the motor build when its happening?
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.
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Old 03-07-2017, 12:17 PM
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i figured since it was mazmart they would snap some pics for ya. great company
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Old 03-07-2017, 02:50 PM
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Mazmart isn't doing the actual build. Just bought the block there. I couldn't afford Engman's time...
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Old 03-09-2017, 11:45 PM
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We'll hot damn. . . can't wait to see this beast!
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Old 03-10-2017, 10:17 PM
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Glad to see more 20B swaps! Can't wait to see this develop.

Matt
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Old 03-27-2017, 09:07 AM
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Myles picked the engine up from MazMart. Probably wont really be any updates till after DGRR.
Attached Thumbnails NA SemiPP 20b-20b1.jpg   NA SemiPP 20b-20b2.jpg  
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Old 04-09-2017, 07:00 PM
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Cutting more weight...

Titanium front nut and flywheel nut. Supposed to remove about 1/2 lb from the rotating assembly.
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Old 04-25-2017, 01:43 AM
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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 ...
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Old 04-28-2017, 03:51 PM
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Best luck to you.
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Old 05-01-2017, 09:03 AM
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Originally Posted by TeamRX8 View Post
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 ...
Thanks buddy. Parting gift from my ex wife and the house she had to pay me for... lol
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Old 05-12-2017, 10:54 AM
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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).
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Old 05-12-2017, 10:58 AM
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this thread is enough goddamn reason to give us the like button back
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Old 05-12-2017, 11:38 AM
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Originally Posted by 200.mph View Post
this thread is enough goddamn reason to give us the like button back
*Like*
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Old 05-24-2017, 09:03 AM
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Seats are back from fabrication shop. They have feet and are ready for the RX8.

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Old 05-24-2017, 12:23 PM
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Nice work! I wouldn't even want to sit in those and potentially ruin them.
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Old 05-24-2017, 01:43 PM
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Awesome build. Those seats are horrendous though.
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Old 05-24-2017, 02:05 PM
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red i love your build but hate the color red and i gotta agree with 9k on the seats
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Old 05-24-2017, 02:50 PM
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Add gas, add oil, repeat
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