Dispelling Myths: Using RX-8 internals in a 13B-REW

TRISPEEDFD3S · 04-04-2008, 09:44 PM

Dan you build motors for the public? HAHA!

Chadwick · 04-04-2008, 11:15 PM

Actually we do, but we don’t advertise for it as we are typically filled up with enough work on our own cars to keep us busy.

Dan

Nopis1O · 04-09-2008, 04:01 PM

very good write up. still looking into lightweight rotors if possible.

Boostmaniac · 04-25-2008, 11:33 AM

That was an excellent write up.

Well done good sir.... well done.

My5ABaby · 04-25-2008, 12:30 PM

Excellent information. If anyone knows, does this also apply to FC's?

neit_jnf · 07-26-2008, 07:33 PM

how about the seals?

I've read elsewhere that:

-rx-8 apex seals can't stand a peripheral exhaust port and warp/wear down; also read that they eat up the non-rx-8 rotor housing chrome
-corner seals with metal plugs eat up non-rx-8 side plates

anyone here with some insight?

Phoenix7 · 07-26-2008, 08:37 PM

Very good info. I never thought about looking up new RX8 parts as replacements for older models.

lt1_fd3s · 08-12-2008, 01:21 PM

i'll have an RX-8 E-shaft in my REW when I get it back within the next few weeks...

PortedRotorTuner · 09-23-2008, 09:22 AM

Nice write up.

WE3RX7 · 09-23-2008, 09:48 AM

I planned on using these parts for the 13B RE build in my FC. Mainly because the 13B RE from the cosmo stationary gears don't support more than 6500RPM (seeing as how they were built for an automatic luxury car) and the price of the MSP gears and e-shaft are much less than that of an REW. I do still plan to keep the RE rotors though.

Very nice write-up! Its nice to have the actual specs now....

Oh - side note. This SHOULD apply to FC 13B engines as well. I don't see why you couldn't use the MSP e-shaft and stat gears in earlier 13Bs... so long as you balance it all accordingly.

prrex4ever · 01-05-2009, 10:34 PM

This is great info, thanks.

C. Ludwig · 01-06-2009, 10:10 AM

I don't believe anyone has noted the fact that the oil passage on the stationary gears does not line up properly with the passage in the non-Renesis irons. It's an easy matter to open up the passage of the gear to match the iron. The rear gear has about half the passage shadowed.

sbrian2 · 01-06-2009, 10:35 AM

I'll add another point to this thread. We had a small oil leak on Dan's car toward the end of the year. When we pulled the engine this winter we found that the o-ring on the rear stationary gear was not sealing properly and that was the source of the leak. Upon disassembly, we found that the o-ring had pretty much self destructed on the rough casting of the rear iron and we chose to re-assemble without the o-ring and just use RTV instead. With that being said, the additional machining that I had done to the rear gear is probably unnecessary so long as you use RTV instead of the o-ring.

C. Ludwig · 01-07-2009, 09:17 AM

I've never tired to use an o-ring with the rear gear but I have used RTV (Right Stuff) and Hylomar. Both have worked equally well.

1twistedrx7 · 01-20-2009, 04:02 PM

part #s ,pics and very well explained .i wish they were all these clean .great job man

04-04-2008, 09:44 PM	#16
TRISPEEDFD3S Rotary Fan in Training Join Date: Feb 2008 Location: NORCAL iTrader: (0) Posts: 89 Rep Power: 17	Dan you build motors for the public? HAHA! __________________ My Cardomain! http://www.cardomain.com/ride/2179693

04-04-2008, 11:15 PM	#17
Chadwick Rotary Fanatic Join Date: Feb 2008 Location: Smyrna, TN, USA iTrader: (3) Posts: 239 Rep Power: 17	Actually we do, but we don’t advertise for it as we are typically filled up with enough work on our own cars to keep us busy. Dan __________________ 93 RX7 BB (Race Car) 93 RX7 SSM (Soon to be IBM and a daily driver) 05 Silverado Z71 08 Mini Cooper 80 LS RX7 (for sale)

04-09-2008, 04:01 PM	#18
Nopis1O Rotary Fanatic Join Date: Apr 2008 Location: Mid State Illinois iTrader: (0) Posts: 159 Rep Power: 17	very good write up. still looking into lightweight rotors if possible. __________________ 1988 Fc Vert. Super Stock 1990 Fc Hard top: Brideported 13b, weber carb, 350z wheels w/nitrogen, or 16in BBS meshies, Msd, Racaro Racing Seats, Custom Gauge cluster, custom Intake, Relocated Battery, 3inch header back borla exhaust system, Alpine stereo system, Wire tucked, S4 shift boot&knob, custom Strut bar, And soon to come a Full black w/ gold pearl paint job, powder coated break calipers, all black interior, bride headliner/door panels.

04-25-2008, 12:30 PM	#20
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Excellent information. If anyone knows, does this also apply to FC's? __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

08-12-2008, 01:21 PM	#23
lt1_fd3s WNC Tour Guide Join Date: Feb 2008 Location: WNC iTrader: (3) Posts: 780 Rep Power: 17	i'll have an RX-8 E-shaft in my REW when I get it back within the next few weeks... __________________ WNC Tour Guide - Including the Tail of the Dragon - PM for details

04-25-2008, 11:33 AM	#19
Boostmaniac Rotary Fanatic Join Date: Apr 2008 iTrader: (0) Posts: 182 Rep Power: 0	That was an excellent write up. Well done good sir.... well done.

07-26-2008, 07:33 PM	#21
neit_jnf Boricua! Join Date: Jul 2008 Location: Puerto Rico iTrader: (0) Posts: 99 Rep Power: 17	how about the seals? I've read elsewhere that: -rx-8 apex seals can't stand a peripheral exhaust port and warp/wear down; also read that they eat up the non-rx-8 rotor housing chrome -corner seals with metal plugs eat up non-rx-8 side plates anyone here with some insight?

09-23-2008, 09:22 AM	#24
PortedRotorTuner レーサー Join Date: Sep 2008 Location: Columbus, Ohio iTrader: (0) Posts: 190 Rep Power: 17	Nice write up.

09-23-2008, 09:48 AM	#25
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	I planned on using these parts for the 13B RE build in my FC. Mainly because the 13B RE from the cosmo stationary gears don't support more than 6500RPM (seeing as how they were built for an automatic luxury car) and the price of the MSP gears and e-shaft are much less than that of an REW. I do still plan to keep the RE rotors though. Very nice write-up! Its nice to have the actual specs now.... Oh - side note. This SHOULD apply to FC 13B engines as well. I don't see why you couldn't use the MSP e-shaft and stat gears in earlier 13Bs... so long as you balance it all accordingly.

01-05-2009, 10:34 PM	#26
prrex4ever Rotary Fanatic Join Date: Oct 2008 iTrader: (1) Posts: 274 Rep Power: 16	This is great info, thanks.

01-06-2009, 10:10 AM	#27
C. Ludwig Rotary Masochist Join Date: May 2008 Location: Floyds Knobs, IN iTrader: (5) Posts: 494 Rep Power: 17	I don't believe anyone has noted the fact that the oil passage on the stationary gears does not line up properly with the passage in the non-Renesis irons. It's an easy matter to open up the passage of the gear to match the iron. The rear gear has about half the passage shadowed. __________________ _______________________________________________ *One stop Haltech, AEM, Syvecs shopping. Installation and tuning.* http://www.lms-efi.com *Free support. Drop us an email.* chris@lms-efi.com 502-515-7482 Facebook @LMS-EFI

01-06-2009, 10:35 AM	#28
sbrian2 Rotary Wannabee Join Date: Mar 2008 Location: M'boro TN iTrader: (0) Posts: 50 Rep Power: 17	I'll add another point to this thread. We had a small oil leak on Dan's car toward the end of the year. When we pulled the engine this winter we found that the o-ring on the rear stationary gear was not sealing properly and that was the source of the leak. Upon disassembly, we found that the o-ring had pretty much self destructed on the rough casting of the rear iron and we chose to re-assemble without the o-ring and just use RTV instead. With that being said, the additional machining that I had done to the rear gear is probably unnecessary so long as you use RTV instead of the o-ring. __________________ -Brian '95 Mazda Miata R package '90 Mazda Miata turbo '06 Chevrolet Trailblazer SS '01 BMW 325Ci '91 Honda CRX hf

01-07-2009, 09:17 AM	#29
C. Ludwig Rotary Masochist Join Date: May 2008 Location: Floyds Knobs, IN iTrader: (5) Posts: 494 Rep Power: 17	I've never tired to use an o-ring with the rear gear but I have used RTV (Right Stuff) and Hylomar. Both have worked equally well. __________________ _______________________________________________ *One stop Haltech, AEM, Syvecs shopping. Installation and tuning.* http://www.lms-efi.com *Free support. Drop us an email.* chris@lms-efi.com 502-515-7482 Facebook @LMS-EFI

01-20-2009, 04:02 PM	#30
1twistedrx7 Rotary Fanatic Join Date: Feb 2008 iTrader: (11) Posts: 411 Rep Power: 0	part #s ,pics and very well explained .i wish they were all these clean .great job man __________________ Rotary Performance Motors(DGRRXI)sponsor 2011 RPM sale complete rebuilt your choice ported or bridge port short block W/RA seals 2300 no core required plus shipping. we now offer powder coating! 93 mb touring patring out sold! 93 vr touring sold 93vr died violently 93 ssm touring sold 93 black 20b project and a lot of money! underestimated !! http://rotorfest.lefora.com