My 20B Cosmo

[Herblenny]

I wanted to start a new thread and post about the transformation of my 20B Cosmo, some info, and build..

Info:

About the Cosmo...

Eunos is a Mazda's luxury division.. kind of like Lexus, Infiniti, Acura, etc..

Eunos Cosmo 20B is first for a lot of things in automotive world.. The top of the line model came with 1st ever touch screen central control unit (controls AC, TV, and GPS). Cosmo was also the first car to have sequential twin turbo system and first and ONLY car to have the famous 3 rotor engine...

Now my car..

1991 Eunos Cosmo 20B Type-S (built date by Dave from DHMR was Aug of 90.. tag on the car, 10/90... USA its consider 1991 model but Japan and Australia 1990 model).

Color- Black with Black interior. Far as I know, its the only Type-S model in USA and only Black on Black.

I believe all the other street legal Cosmos in USA are the ones with the GPS and such.. Only problem I see with those are that the GPS doesn't work here in US, and you can't get rid of the central unit as it also controls the climate control.. Mine, I could get rid of it and get an updated, modern GPS headunit (which I'll be putting one later on).

Here are some pics when it still lived in Japan:)

http://i37.photobucket.com/albums/e79/herblenny/HIMG0008.jpg

http://i37.photobucket.com/albums/e79/herblenny/HIMG0010.jpg

http://i37.photobucket.com/albums/e79/herblenny/HIMG0002.jpg

When it got to the states.. photos courtesy of Allen G.

http://i263.photobucket.com/albums/ii149/Rxtuner/DSC_0058-8.jpg

http://i263.photobucket.com/albums/ii149/Rxtuner/DSC_0119-4.jpg

http://i263.photobucket.com/albums/ii149/Rxtuner/DSC_0034-6.jpg


And few photos from the seller/importer..

http://i37.photobucket.com/albums/e79/herblenny/IMG_0993.jpg

http://i37.photobucket.com/albums/e79/herblenny/IMG_0994.jpg

http://i37.photobucket.com/albums/e79/herblenny/IMG_0987.jpg


Few pics at the DGRR 09 - Photo by: FDSeoulhttp://i37.photobucket.com/albums/e79/herblenny/3461401847_c305ac0e94_b.jpg

http://i37.photobucket.com/albums/e79/herblenny/3461403215_51efdbb05f_b.jpg

http://i37.photobucket.com/albums/e79/herblenny/3461414237_4122448eba_b.jpg

http://farm4.static.flickr.com/3329/3490604066_d3ec0a0975_b.jpg

[Herblenny]

For DGRR, I ended up putting on my Forgeline ZX3 18x8 front and 18x9 rear with 245/40 front and 275/35 rear.

Then I realized its near impossible to get parts for these cars.. as I was looking for a spare passenger sider mirror..

Luckily Bryan from BNR was looking for a 3 rotor engine and I ended up going in with him to buy a whole front clip of Eunos Cosmo..

Over next few days, I've completely tore the cosmo down to bare frame...

http://i37.photobucket.com/albums/e79/herblenny/4226_87291100377_637860377_2274397_.jpg


http://i37.photobucket.com/albums/e79/herblenny/4226_87291115377_637860377_2274399_.jpg


http://i37.photobucket.com/albums/e79/herblenny/4226_87291120377_637860377_2274400_.jpg


http://i37.photobucket.com/albums/e79/herblenny/4226_87291145377_637860377_2274404_.jpg


http://i37.photobucket.com/albums/e79/herblenny/4226_87291150377_637860377_2274405_.jpg


http://i37.photobucket.com/albums/e79/herblenny/4226_87291155377_637860377_2274406_.jpg

[Herblenny]

After this, I wanted to update the Cosmo by putting in one of my spare RX8 seats.. But that attempt failed as the 8 seats were sightly wider...

My Cosmo exhaust was pretty cool in that it had an actuator to open up the second tip at high RPM. But the whole system was rusted out and leaked everywhere, I got it patched up by Todd from No Limit.. But it was still leaking and I think my cat was clogged up..

I contacted one of the top fabricator in Alabama, Walker Morgan at Morgan Performance Fabrication (http://www.mpfab.com/). Walker had built several show cars and performance car exhausts and many locals have recommended him. After talking to him, he decided to take on the Cosmo and built a 3inch, full exhaust, dolphin tip system.. All I can say is I was very impressed by his professionalism, his attention to details, and getting things done on time (a day early, which is very rare these days).

Photos By Walker Morgan:

http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-1.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-2.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-3.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-4.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-5.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-6.jpg


http://i37.photobucket.com/albums/e79/herblenny/Phillip-Sohn-7.jpg


Photos by me..

Cosmo and the FD
http://i37.photobucket.com/albums/e79/herblenny/7andCosmo3.jpg

Love the bluing of the tips.

http://i37.photobucket.com/albums/e79/herblenny/CosmoExhaust1.jpg


http://i37.photobucket.com/albums/e79/herblenny/CosmoExhaust2.jpg


http://i37.photobucket.com/albums/e79/herblenny/0811092048.jpg


Here is Walker welding up the hangers..

http://i37.photobucket.com/albums/e79/herblenny/0811092042.jpg

[Herblenny]

I also wanted to make this Cosmo bit more unique.. So I got a help from our RCC Admin, Rotary Engine Builder, and Powder Coater,... Kevin Landers to do his magic and get some stuff done for me....


Kevin powder coated jet black.. UIM and all the IC pipings.
http://i37.photobucket.com/albums/e79/herblenny/DSCF4543.jpg


http://i37.photobucket.com/albums/e79/herblenny/DSCF4545.jpg


All parts installed..

http://i37.photobucket.com/albums/e79/herblenny/Cosmoengine1.jpg

[Herblenny]

Finally,

I found a set of Tein HA coilovers (these are nearly impossible to find and help of the guy who imported the Cosmo). Only issue was that the coilovers were missing few parts such as wrench and bolts to mount it on the car. I've contacted Tein, and they were VERY helpful about finding the parts for me...

after the fronts went on..

http://i37.photobucket.com/albums/e79/herblenny/CosmoCoilover1.jpg


How the Cosmo sits now..

http://i37.photobucket.com/albums/e79/herblenny/DSC_1239-2.jpg

[ZGN]

Awesome! this makes me want more time and $$ to spend on my Rotary! Haha I need a new job. I am lucky if I get to drive it twice a month.
Hopefully the FD and I will have a good week together driving to seven stock! :)

[FerociousP]

beautimous!

[need RX7]

*drool* :icon_tup::icon_tup:

[djmtsu]

What did you do with the wheels that were on it Phil? ;)

[Herblenny]

What did you do with the wheels that were on it Phil? ;)

I still have it.. That's going to my my next project.. Sand them down and paint them.. GOLD!!!

[Chibana]

Gorgeous.

[djmtsu]

I still have it.. That's going to my my next project.. Sand them down and paint them.. GOLD!!!

You lost me there.....

:leaving:

:driving:

[Dzire]

Hey Phil Who going too paint the wheels

[RETed]

Aren't you missing the "3ROTOR" badge on the left front fender?


-Ted

[ZGN]

and where's the RCC sticker??? :o11:

[Bryan@BNR]

Walker did a wonderful job on the exhaust system! I worked with him for a few years. He does a fabulouse job on everything he does. How does it sound with the 3 magnaflow mufflers?

Bryan

[Herblenny]

Aren't you missing the "3ROTOR" badge on the left front fender?


-Ted

Ted,

I have the 3 rotor RE fender badge on both sides of the car now..



Walker did a wonderful job on the exhaust system! I worked with him for a few years. He does a fabulouse job on everything he does. How does it sound with the 3 magnaflow mufflers?

Bryan

I asked walker and he said he knew you from back when.. The car sounds much better! Not only that it spools faster and I feel like I gained some POWA!

[Herblenny]

Hey Phil Who going too paint the wheels

Hobby, Well, I thought about doing it myself.. But... hmm..

Are you looking to take on a project?? We need to talk :)

[prrex4ever]

Awesome ride, luv everything about it. Congrats!

[Dzire]

Hobby, Well, I thought about doing it myself.. But... hmm..

Are you looking to take on a project?? We need to talk :)

yea lets doing!!

[neit_jnf]

wait, you can legally have these in the US????? wow! this is next in my wanted list!

[MaczPayne]

Now that's Luxury, spelled with two g's!

[Boosted FC]

Wow. Just beautiful Phil. Both of them.

-Sheldon.

[Herblenny]

Thanks Sheldon!

Next rotary gathering at Mazmart, I'll bring the Cosmo.

[Boosted FC]

Thanks Sheldon!

Next rotary gathering at Mazmart, I'll bring the Cosmo.

I'm holding you to that :icon_tup:

[wanganwarrior]

love it, beautiful

:D

[Christopher W.]

What do you think about the down turned exhaust tips?

Do you think that they muffle the sound any?

I am wondering about the effect on my 20b na?

[Bryan@BNR]

I have a turn down like that on my 323 and it makes the car louder. I don't know about Phils car. Walker did a fantabulous job.

[Christopher W.]

Not what I wanted to hear about the tips... But this car is just freakin awesome. If I were to acquire one it would be basically just what you have done.

If someone hasn't already spoken up, can I have first dibs if you ever decide to sell for whatever reason? :seeya:

Can you give more impressions about driving the car. Does it feel solid? What about interior build quality, rattles? How would it compare to say a 93' or so 929?

Simply beautiful....

[Herblenny]

Hey Christopher,

Not sure about the sound as one other one I could compare is the stock. I mainly wanted the dolphin tail because of the look more than performance and such. But it definitely sounds good at full throttle and its not loud when driving.. I'll also ask the fabricator and see what he says about the dolphin... he might know more about the sound than I.

Well, Im planning to keep the car for a long time, but who knows what will happen.. But I will keep you in mind if I do..

Impression.. Well, with the coilovers, its better. It was bit on the softer side even with stock sport suspension (also they are 18 years old). Tein HA made it bit more stiff and actually a better ride. Car itself is built well. Comfy and has power (stock 0-60 is 6 sec stock). I don't hear rattles and its quite quiet.. I'm in contact with Inukai @ RE-A to try to source a steering column pod so I could put a boost gauge and maybe hook up a boost controller. The full exhaust made the car bit more responsive and more power.. I just want to make sure I'm not over boosting and see if I could add couple of more lb boost to get few more HP. I'm also talking to them about getting the Cosmo ECU flashed for specific mods.. I've told them about BNR's stage 3 turbos but they need more info about them... So, bryan, can you give me some details to the turbos??

[Bryan@BNR]

Hey Phil. You can retard your timing with the CAS. I would do it atleast 3 degrees just to be safe. I know you don't feel like yanking that engine out just yet lol.

[JShiz]

The guys on mobileimports.org are drooling over your cosmo at IFO. you made a great showing.

[pineapplesoymilk]

that is just awesome did they all come in auto?

[reddozen]

that is just awesome did they all come in auto?

sadly, yes...
all the 20b's are mated to autos.

[pineapplesoymilk]

really? that sucks what if your did a swap what tranny could you use with it? well you have a very nice car my friend;)

[Herblenny]

Thanks!

I have no plans to put manual tranny in this car... But I have seen FD tranny into one of these in japan... But I'm planning to do 20B FD and will be using an FD tranny.

[eddierotary]

that car is mint. no need for any further mods, specially when you dont see them everyday, even in japan

[duval7]

Wow this is the first time i have seen this thread. Different strokes for different folks i guess. Atleast now i know what a Buick Riviera would look like with a 20b in it.:rofl:

[Herblenny]

Wow this is the first time i have seen this thread. Different strokes for different folks i guess. Atleast now i know what a Buick Riviera would look like with a 20b in it.:rofl:

LOL!

My next goal is get a top notch black paint job and a nice updated stereo in the car.

[Akagis_White_Comet]

Phil, you are one LUCKY guy to have a Cosmo here in the states, much less a 20B Cosmo and even less to have such a BEAUTIFUL one too.

By the way, I think I have the part numbers for the mirrors, as you mentioned needing one before. Correct me if I'm wrong, but I got them by following Mazda's part number coding scheme, using the FD's mirror part numbers and changing the prefix on them to the proper J001 from FD01 (change the prefix to the 'body' prefix, leave the rest the same).

I got this method by looking at every RX-7 and RX-8 US-spec parts catalog from 1979 to 2008 and writing down the part number for the front bumper, shortblock engine and ECU and it lined up perfectly every time, the only exception being the letter suffix on certain parts like the engine to denote revisions. Here's an example using the S4 N/A and 20B shortblock. The part number to order a NEW S4 N/A shortblock is N326-02-200. To translate this to the 20B Cosmo, change N326 to NF01 (20b Cosmo's ecu prefix) and you get NF01-02-200 (Pre-A shortblock), which would be superceded by NF01-02-200E as of today since E-codes are the only new engines available from Mazda.

What I've noticed when testing this method is that every car has 2 prefixes, the Engine/electrical one (S4 N/A is N326) and the body prefix (S4 N/A is FB01). If you just change the prefix, you'll almost always end up with the correct part for that model. The only exception I've found to this rule so far is the 99-spec front bumper (F110-59-310c), compared to the S6 FD bumper (FD01-50-031).

Anyway, if I'm right, the mirror part numbers should be J001-76-1800-PZ (left mirror, brilliant black) and J001-76-1200-PZ (right mirror, brilliant black). You might want to double-check it in the parts catalog if you have one. And if you do have the parts catalog, please send me a copy so I can get started on translating it for everyone.

-Travis

EDIT: After hunting in the parts catalog, I found out that I was wrong. The correct part numbers are J001-69-120D (right side) and J001-69-180D (left side). For the fender-mounted mirrors, it is J001-79-120 (right side) and J001-79-180 (left side). If anyone is interested, I have every japanese Mazda parts catalog available and can give you part numbers to snag whatever you're looking for too.

[project86]

you dont happen to have any exhaust sound clips do you? id like to hear

[chrisa]

Love this car. I want one. hah.

[hwnd]

Shoulda got a Droid Phil!

[diabolical1]

nice car.

i guess my only question is how much of a hassle was it to get legalized here? i once looked into getting an R33 Skyline and the paperwork and "laws" (as i understood them) were quite off-putting - at least, to me. i'm just curious what you went through for the Cosmo.

[Ptotherice]

I'm curious as well. I finish school soon and maybe my first nice daily driver will be a Cosmo if it's as easy grabbing one from Canada like my friend did with his Type-R Integra and bringing it over here. (I'm assuming it's not as easy, but a man can dream.)

[dbalista]

I am in Okinawa Japan now and am looking at picking up a 20B to bring back to AZ with me when I leave. Any pointers on what to watch out for???

Your project I coming along great. Even though I did not check how old this is LOL..

thanks

David