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-   -   FE3 RX-8 build (https://forums.probetalk.com/showthread.php?t=1701318059)

artsvetkov November 29th, 2015 05:04 PM

FE3 RX-8 build
 
I always wanted to put FE3 into a RWD platform. I recently got a miata, but I didn't fit into it so well. I was able for find 2004 RX8 with bad engine fairly cheap($2100). So I sold my miata and started a new project.

Project Scope/Specs:
Goal 350-400whp

-2000 Kia Sportage FE3
- Rx8 JDM 5 speed trans with 1990 B2600 Bellhousing
- Custom built Intake and Exhaust manifolds
- 50 trim t3/t4 turbo
- MS3X engine management.

Ok here are some pictures

Rotary out

http://i30.photobucket.com/albums/c3...ps1xvuxskl.jpg[/URL]

http://i30.photobucket.com/albums/c3...psbzyxflar.jpg

B2600 bell housing and 5 speed Trans installed.

http://i30.photobucket.com/albums/c3...psigzr1ue7.jpg

Since the head protrudes about 2.25" aft, the firewall had to be cut.

http://i30.photobucket.com/albums/c3...psnuxhykoy.jpg

Test fit
http://i30.photobucket.com/albums/c3...pswjimm4ip.jpg

I got about 3/16" gap between the head components and the HVAC enclosure, just enough to close up the firewall with #12 sheetmetal

http://i30.photobucket.com/albums/c3...psifr290so.jpg

Engine mounts are done.
http://i30.photobucket.com/albums/c3...psp8s32g4u.jpg

Brizzy November 29th, 2015 05:26 PM

Awesome. ... build.

The Fe3 is an amazing motor !
I can't wait for more updates.

MonoxideChild November 29th, 2015 06:30 PM

Yes. I like different!

GTTRacing91PGT November 30th, 2015 08:06 AM

Great start! Anxiously following this build :thup:

njintau_fsd November 30th, 2015 01:40 PM

Definitely A+ for creativity and effort. So does the FE3 actually bolt up to the Rx8 tranny without any modifications?

Brizzy November 30th, 2015 03:08 PM

He used a b2600 bell housing.

Just realized this isn't a jdm Mazda Fe3.

artsvetkov November 30th, 2015 04:36 PM

Quote:

Originally Posted by njintau_fsd (Post 1924185327)
Definitely A+ for creativity and effort. So does the FE3 actually bolt up to the Rx8 tranny without any modifications?

You have to use JDM or Europe 5 speed gear box and B2600 bellhousing(it has 10* twist to it) Unless you can get a bellhousing from Bongo van(I call it the unicorn because it's over seas and getting it here in US would be a miracle), it's pretty much an FD gear box with RX8 tail housing that way it still bolts up to the factory PPF. The 6 speed has different bellhousing to trans pattern, so you can't do that. I hear 5 speed in stronger anyways. I wish we still had a good supply of JDM FE3 engines, I will rebuild this engine with stock pistons and rods and see how well it holds up.

proboner December 1st, 2015 09:55 AM

very cool! Never considered an rx8 for a platform of this nature... seem like a good deal!

artsvetkov December 1st, 2015 12:30 PM

Quote:

Originally Posted by proboner (Post 1924185338)
very cool! Never considered an rx8 for a platform of this nature... seem like a good deal!

Yeah it cost me the same as my damaged 2001 Miata. And RX8 is pretty much stretched and roomy Miata.

mac1 December 1st, 2015 08:20 PM

So you are telling us that fe3 and bell housing swap work easier then a with a rx7 turbo tranny where you need the bongo input shaft!!!!! Damn I love mazda for recycling parts !

artsvetkov December 1st, 2015 09:53 PM

From research I did, FD trans has longer input shaft than TII, bongo van bellhousing would of been ideal (same as b2600 but no weird twist) but good luck getting one here. So 5 speed RX8 trans($400+shipping) seemed to be the way to go.

dillinr December 2nd, 2015 12:52 AM

Oh my.

plx92 December 2nd, 2015 08:25 AM

Cool Project! Keep us updated.

artsvetkov December 27th, 2015 11:31 AM

Not too much progress has been made, the firewall is almost closed back up(I ran out of welding gas). I was planning on building full intake manifold from scratch but KIA intake somewhat fits, but it also block some heater/AC hoses.

http://i30.photobucket.com/albums/c3...psq5md8nu4.jpg

http://i30.photobucket.com/albums/c3...ps2gms6nmf.jpg

Had to trim off some end tank features.

http://i30.photobucket.com/albums/c3...ps2xuhc8oa.jpg

I'm debating if I should chop up stock intake and reused flange and portion of the runners.

mac1 December 28th, 2015 12:53 PM

http://phoenix.craigslist.org/nph/cto/5346076369.html

http://phoenix.craigslist.org/wvl/cto/5348998897.html

These cars are worthless with a rotary in them! I want

artsvetkov December 28th, 2015 01:14 PM

Does anyone know if probes FE 2.0 exhaust port spacing is the same as 1.8BP(Miata) I'm thinking of using turbo manifold if the spacing is the same( probe has wider flange, which I need to change the hole pattern)

---------- Post added at 12:14 PM ---------- Previous post was at 12:12 PM ----------

Quote:

Originally Posted by mac1 (Post 1924185867)

Yes, in my mind they are better for swaps than Miata and cost the same or less.

BlackProbe December 29th, 2015 12:20 PM

Nice!!Ive been waiting for somebody to do this swap!!

artsvetkov December 29th, 2015 11:16 PM

Test fitted center gauge pod

http://i30.photobucket.com/albums/c3...psh5yijfh9.jpg

I also plan to run Android tablet to display TunerStudio.

http://i30.photobucket.com/albums/c3...psrdxvnwj1.jpg

artsvetkov January 13th, 2016 12:38 PM

My 550lb scales came in, so I weighted the long block and it was around 220lb

http://i30.photobucket.com/albums/c3...ps0uubrjoa.jpg

I also took off all of the oem cast steel brackets and they weighted around 40lb!
I'm planning on making my own brackets for A/C and Alternator out of 1/4 aluminum.
http://i30.photobucket.com/albums/c3...psuxpxnndo.jpg

dacycle2 January 13th, 2016 01:50 PM

Nice! Pretty light, I am curious about the total weight with flywheel, intake manifold, exhaust headers, and your pulley system. Keep us posted. Thanks

I am impressed with the Major weight loss 40 lbs. That is awesome

artsvetkov January 13th, 2016 06:12 PM

Quote:

Originally Posted by dacycle2 (Post 1924186290)
Nice! Pretty light, I am curious about the total weight with flywheel, intake manifold, exhaust headers, and your pulley system. Keep us posted. Thanks

I am impressed with the Major weight loss 40 lbs. That is awesome

I'm toren up on the crank pulley issue, KIA pulley has V belt, 4 and 5 rib pulleys on the dampener, I need to use only 4 rib pulley and I also need to mout RX8 trigger wheel. Also Kia dampener runs into steering rack, I have RX8 4 rib pulley and trigger wheel but RX8 don't have a dampener on their pulley set up.

So Kia pulley
PROS:
- it fits
- harmonic dampener
CONS:
- Runs into steering rack
- has unnecessary pulleys = extra weight
- needs a trigger wheel

Rx8 pulley with adapter
Pros:
- clears steering rack(no geometry change)
- oem trigger wheel
- light weight

Cons:
No harmonic dampening

dacycle2 January 16th, 2016 02:53 PM

Post some pictures of the kia unit. I may have some Ideas for you because I had similar issues. Do not use the rx8 unit. To do this right stick with a harmonic damper.

artsvetkov January 16th, 2016 09:47 PM

I looked at Fluidampr and they bring up a good point that OEM dampeners are tuned for a narrow band of frequency that changes if you mod the engine or increase load(boost). Fluidampr uses internal flywheel and fluid, that way the dampening occurres through fluid shear, therefore it works through full frequency range. Down side is that their dampener is over $500 and they don't have one for Mazda 4 cyl, one for DSM 4g63 looks like the closest adaptable option.

Kia uses 6 non symmetrical bolts to attach the pulley to the crank timing sprocket

http://images.apwcontent.com/is/imag...tImage=noimage

artsvetkov January 30th, 2016 11:43 AM

Finally got the flanges cut.

http://i30.photobucket.com/albums/c3...psozivglxm.jpg

There is some port mismatch on cyl 2 & 3, I just blended the edge.

http://i30.photobucket.com/albums/c3...psdhn7cdhr.jpg
http://i30.photobucket.com/albums/c3...pshdkcfh7h.jpg
http://i30.photobucket.com/albums/c3...psylkxeirw.jpg


Test fit
http://i30.photobucket.com/albums/c3...psyuj34qns.jpg

There are some issues that need to be worked out due to double flange like length of studs and turbo being too close to fuel lines.

Dima_MX6 February 1st, 2016 10:49 AM

That is an impressive project, good luck!

After owning the RX-8 a couple of years back I'm not opposed to picking one up again but... something needs to be done with the powerplant haha.

Hoping to see what this thing is capable of!


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