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Project Pay2Play: My Eunos Cosmo has arrived!

Antoine

Administrator
Any chance you are driving your beast up to Hokkaido this summer?
Haha...Unfortunately not but that would definitely make for an epic road trip and a great addition to this thread! :D Sadly I haven't been driving my Cosmo that much recently because it has been at TCP Magic for a while, mainly because Kawato-San has been busy working on his pro RX-7 drift machines (a couple driven by Mad Mike Whiddett). The Cosmo was in for basic maintenance and to sort a few details mentioned below...

Thanks to Kawato-San for the photos! (thumb)

Time for some love and maintenance!


Sticking with Speedmaster for engine oil...


BuhBye old oil...


New battery...Also sticking with the brand ATLASBX because it has proven to last longer in the Cosmo than any other battery I've tried including Optima and Mazda's own "premium" option...PLUS, it's cheaper...A LOT cheaper!


Radiator hoses checked and still good to go for now...


New air conditioning belt...Last summer I started hearing a loud squealing sound under acceleration and no it wasn't a family member, it turned out to be the air conditioning belt stretching / getting old (at least that's what we think)...I'll know for sure when I pickup my Cosmo this Friday, put on the air and wake up the 20B. ;)


Replacing the blue silicone tube from the HKS F-CON V Pro and Boost Controller install with a black one simply for aesthetics...


Replacing this piece as well and I must say, I really like the look of that glossy black silicone (in the engine bay okay :p )...I think I might use it to replace more hoses and tubes in the future, seems to brighten up the engine bay nicely!


Here's another angle of that sweet silicone... ;)


The final detail is new license plate fasteners. The old ones were standard and RUSTING on to the snow white plates and it stuck out like a sore thumb. So, they've since been replaced with nicer fasteners and the rust stain has been removed...It's a small detail but one that I feel makes a big difference!


Replaced the rear one as well...


That's all for now...I still need to have Shaken (mandatory vehicle inspection) done and consider replacing the suspension. On a quick related note...There were other things I wanted to fix or replace but unfortunately, parts for the Eunos Cosmo are becoming increasingly unavailable (even from Mazda) which is frustrating to say the least! I will go into more detail about those issues later...As always, thanks for reading and stay tuned! :D
 

i12drivemyMP5

___ 323F ___
Contributor
Nice update. I too went for the glossy black silicone recently while doing some updating. Samco radiator hoses and the elbows/connectors for the 505zoom air intake box, MAF, TB. Of course it's no Eunos Cosmo but it is similarly silver. Always a treat to see new stuff in this thread.
 
:
'86 RX-7 Base, '79 RX-7 GS
NLA parts is always frustrating. I'm finding that's occurring more and more with my RX7 as well. Even what I consider to be "collision" parts are NLA, which is unfortunately should any of these cars be in an accident. Ebay Motors and Yahoo Auctions will become your friends.
 

Antoine

Administrator
Nice update. I too went for the glossy black silicone recently while doing some updating. Samco radiator hoses and the elbows/connectors for the 505zoom air intake box, MAF, TB. Of course it's no Eunos Cosmo but it is similarly silver. Always a treat to see new stuff in this thread.
Thanks! Cool, yeah I've never been a fan of the blue silicone, that glossy black really seems to compliment the EC engine bay and I'm planning on using more of it in the future. Next on my list to receive the black silicone treatment are the intercooler hoses. The plan is to use one normal hose piece and connect it to another hose that has a "ripple" (not sure what you call it) for flexibility using titanium piping. It should not only look cool but be more than capable of handling higher than stock levels of boost. (2thumbs)


NLA parts is always frustrating. I'm finding that's occurring more and more with my RX7 as well. Even what I consider to be "collision" parts are NLA, which is unfortunately should any of these cars be in an accident. Ebay Motors and Yahoo Auctions will become your friends.
You said it, that and anyone who can create replacement parts. Fortunately, Kawato-San has a lot of contacts and I'm going to be putting his network to the test as more and more EC parts become unattainable. :(


In other news... UPGRADE UPDATE!

...But before that I just want to report that the Cosmo PASSED its mandatory vehicle inspection (called Shaken in Japan) without needing any repairs. #GoTeamEunosCosmo (thumb)

Now on to the update...It's official, the Cosmo is getting a long overdue suspension upgrade in the form of new custom DG-5 Coilovers. They are being made as I type this post, DG-5 is using the stock suspension off another Eunos Cosmo for reference. Kawato-San recommends the DG-5 coilovers as that is what all his RX-7 race / drift cars use including the twin turbo 4Rotor monster that Mad Mike currently pilots. DG-5 is a Japanese suspension brand and the coilovers are also made in Japan and use Swift Springs. Although they are often used for drifting, they can be set up for street and race use as well.

Here's a DG-5 Flyer from TCP Magic with more info...

 
I'm interested to see the quality of those DG-5's and how they ride. What're the spring rates? I have the Aragosta units with Swift springs and it's an amazing feelings set up for our cars.
 
:
'86 RX-7 Base, '79 RX-7 GS
It's interesting the image you pasted above shows an application for the FC3S RX-7 but I couldn't find anything on their site. It sounds like an interesting option if your mechanic recommends them on the shop race cars.
 

Antoine

Administrator
I'm interested to see the quality of those DG-5's and how they ride. What're the spring rates? I have the Aragosta units with Swift springs and it's an amazing feelings set up for our cars.
Me too especially considering how much they cost! Hopefully I will have pics of the coilovers and the install process from Kawato-San to post but note that I'm still waiting on delivery...At least I have my Cosmo in the meantime. As for the spring rates, good question...Let me confirm first and then I will post the details here...I've heard that driving a Eunos Cosmo with coilovers provides a "night and day" like difference compared to the stock suspension. While I'm running AutoExe Springs, they're probably from the last century (literally) and my shocks / struts are making noises when I drive over bumps etc...As you can imagine, I'm extremely eager to experience this difference for myself!


It's interesting the image you pasted above shows an application for the FC3S RX-7 but I couldn't find anything on their site. It sounds like an interesting option if your mechanic recommends them on the shop race cars.
Did you also check the DG-5 website? http://www.dg-5.co.jp/lineup/index.html

Yeah, a few years ago I inquired about upgrading my suspension and he recommended a "local" custom suspension builder here in Japan but shortly after he partnered with DG-5 and Swift Springs. I like that he's not just recommending them from "word of mouth" or because he gets a phat commission but because he actually uses them on his race cars! (thumb)
 
:
'86 RX-7 Base, '79 RX-7 GS
Did you also check the DG-5 website? http://www.dg-5.co.jp/lineup/index.html

Yeah, a few years ago I inquired about upgrading my suspension and he recommended a "local" custom suspension builder here in Japan but shortly after he partnered with DG-5 and Swift Springs. I like that he's not just recommending them from "word of mouth" or because he gets a phat commission but because he actually uses them on his race cars! (thumb)
It shows up there. At about $2100 USD it's a pricey alternative but one I'll keep in mind. The spring rates are pretty much the same as those from other companies so it'll be interesting to find out what differentiates them from the others. I'll be paying attention when it's time for your upgrade.
 

Antoine

Administrator
Finally...The Cosmo is currently "under the knife" at TCP Magic and I have photographic evidence with more to come (provided Kawato-San hooks me up with juicy shots of the install)...:D

I knew it was time to bring the Cosmo in for surgery when this pic popped up on my phone...;)




Here's the man, master mechanic and rotary guru himself holding up my freshly fabricated coilovers!




Here's a closeup of the DG-5 Coilovers from TCP Magic custom built for my Eunos Cosmo...





Now for some fun facts...Kawato-San says these coilovers are significantly lighter than the stock suspension. Perhaps even as much as half the weight of the stock setup! He also says DG-5 designed these coilovers specifically for my application and took into account all sorts of values such as the Cosmo's weight distribution etc. In other words, they didn't just slap together parts off the shelf and call it a day (at least I hope not eek lol).

Also, we realized that in order to adjust the rear coilovers, a hole would need to be cut into the rear deck (on both sides) to access the adjustment knob if I wanted to retain that option (instead of setting and forgetting). Being a fan of the "clean looks like factory look", I was not keen on having holes in the rear deck...So, while looking at the rear suspension via the trunk, I got the idea to custom mount a cable to each knob so that adjustments can be made by simply opening the trunk. To my surprise, Kawato-San nodded and said it might be possible and he will certainly give it a try...Note that he may conclude that it's not and then I'll be back to square one! Another option would be to install some sort of electronic "on the fly" system which would be cool but would add additional cost, complexity and risk of failure...Plus, I really like the idea of a simple and stealthy way to adjust the rear suspension. Also, I don't plan on making adjustments so frequently!

Oh and I managed to snap a shot of the TCP Magic DG-5 coilovers installed on the Quad-Rotor Twin-Turbo RX-7 that Mad Mike drifts when in Japan, aka HUMBUL (currently being prepped for 2016)...Proof that Kawato-San sells what he runs!

 

Antoine

Administrator
Time for a Quick Update!

Unfortunately, the DG-5 install is taking longer than expected...It turns out further customization is needed to make the coilovers fit my Cosmo. It appears simply basing the custom coilovers off of a set of original factory struts etc was not enough as a couple major issues have popped up.

One issue is that they are not long enough...As shown to me in the pic below...




The other major issue is the upper mount which can be clearly seen in the pic below...



I was originally told it would take a week or so, it has now been two weeks. I'm not too concerned because I trust Kawato-San will sort everything out and I would much rather he do the best job possible than try to hack things together to save time. That said, I'm hoping his next text message contains good news and more juicy pics...We'll see!
 
:
'02.5 Mazda Protege5
That's a bummer they need some modification, but I'm sure your guy will make them work! (thumb) I'm eager to see it all finished :D Happy Holidays too!
 
Have you gotten the car back yet? Those are some unexpected issues there for sure!

For my rear coilover, I had to cut little holes in the rear parcel shelf. Never thought about going through the trunk, hmmmm.
 

Antoine

Administrator
That's a bummer they need some modification, but I'm sure your guy will make them work! (thumb) I'm eager to see it all finished :D Happy Holidays too!
Yeah...He originally told me one week but it ended up taking about a month! No problem though, it's not a daily driver and I'm not a fan of rushed jobs. The good news is, it's done and I've got my Cosmo back...Picked it up just before Christmas. (2thumbs)

Full details and pics to be posted momentarily! :D


Have you gotten the car back yet? Those are some unexpected issues there for sure!

For my rear coilover, I had to cut little holes in the rear parcel shelf. Never thought about going through the trunk, hmmmm.
Yes! Unfortunately we did not go ahead with my trunk idea because as you know, the rear seat belts mount to a bracket that sits right over the rear suspension mounts and if I want to keep my Cosmo street legal in Japan, I have to keep the belts mounted as they came from the factory (if I understand the rules correctly). That fact combined with my desire not to cut holes in the factory interior made "operation rear coilover adjustment" just about impossible. :(

So for now, the rear interior will need to be taken out in order to adjust the rear coilovers...Fortunately, I'm liking the current setting so not a major deal at this time. :)

Thinking about it some more, there is probably a way to make it all work without cutting things up (such as that Tein EDFC system). Wait a minute...After just checking the Tein website, I spot this...Tein "Motor Extension Kit"...Here are pics from the site...


https://www.tein.co.jp/e/products/img/ext/ext_01.jpg


https://www.tein.co.jp/e/products/img/ext/ext_02.jpg

Info page... https://www.tein.co.jp/e/products/motor_ext_kit.html

Very similar to my trunk idea but have it be manual...Hmmm...Food for thought! :D
 

Antoine

Administrator
Alright now for the finale!

So it turns out that a few "adjustments" needed to be made to my custom DG-5 coilovers after initial receiving them. They needed to be lengthened and have the top mounts changed in order to "become one" with the Cosmo.

Below you can see a couple shots courtesy of Kawato-San showing the freshly updated coilovers ready for install...






Here are pics of the updated coilovers mounted on the Cosmo thanks to Mr. TCP Magic...

Ps...Note to self, save for a brake upgrade!






Another Note To Self...Upgrade Brake Lines!




These are pics from Kawato-San showing how the rear seat belt mechanism is mounted and where the coilover adjustment knob is located (sadly)...








This is the view from the TCP Magic Office of the Cosmo having the interior put back in, fortunately it only took an hour!




Here's the office and a view of the showroom where the TCP Magic Race Cars are kept...






If anyone is interested to know the spring rates and current settings, they are...

* Front Spring Rate: 14kg
* Front Dampening Level: 12 (0 to 30 range and lower equals harder)




* Rear Spring Rate: 8kg
* Rear Dampening Level: 17 (0 to 30 range and lower equals harder)




For those of you that are still with me, lol...Here's how the Cosmo sits now, which is not much different actually but to me it looks and feels COMPLETELY DIFFERENT and that is not an exaggeration! The rear has been dropped a bit and the front has been slightly raised and leveled...



I'm going to save my impression of #CoiloverLife for next time so please do stay tuned, thanks and hope everyone is enjoying the holidays! :D
 
Wow what the...that's the first time I've seen the rear seat belts like that! My rear are just lap belts, and they tuck nicely under the seat cushions, so are all the other Cosmo's I've seen. Do you have pictures of the rear belts with all the interior trim back in?

Congrats on the coilovers, that's the same spring rates I have on my Swift's mounted onto my Aragosta's. They a great compromise between comfort and performance.
 

Antoine

Administrator
Wow what the...that's the first time I've seen the rear seat belts like that! My rear are just lap belts, and they tuck nicely under the seat cushions, so are all the other Cosmo's I've seen. Do you have pictures of the rear belts with all the interior trim back in?

Congrats on the coilovers, that's the same spring rates I have on my Swift's mounted onto my Aragosta's. They a great compromise between comfort and performance.
About the Belts...Really? Yours are just lap belts? Got a pic? Unfortunately, I can't seem to find any pics of the rear deck at the moment but I can assure you mine are not lap belts! You can see them for a second in this video I made years ago (literally) when I first got the Cosmo (a few changes to the interior since then)...

<iframe width="640" height="480" src="https://www.youtube.com/embed/ZoWzj4hdwmU?rel=0&controls=0&showinfo=0" frameborder="0" allowfullscreen></iframe>

Could it be because mine is a '95? Perhaps there was a law change or just a next year model tweak?

As for life with coilovers...LOVE IT!!! (rockon)

Every aspect of the driving experience is now different and BETTER! I knew it would be different but I didn't expect it to be to this degree. For example, even just accelerating from a stop feels faster now that the body doesn't move around like it did with the old stock setup. The same positive effect can be felt when braking too...The Cosmo STAYS planted at all times and you might be thinking...Well, what about the ride quality now..? It's surprisingly good, the same as before if not better with a few exceptions though...Mainly, when hitting sizeable bumps or dips in the road, I do feel a more pronounced "thump" now but fortunately, Japanese roads and highways are quite smooth for the most part so it's rare to even hit a bump, especially on the highway.

I did go for a long drive yesterday to further test the new suspension setup and man was it a blast! I'm definitely able to confidently carry more speed through corners now...Speaking of corners, I no longer feel the risk of rubbing my front tires around tight hairpin turns in the mountains thanks to the DG-5's ability to maintain under load and to it's height adjustability.

If there is a downside to all of this, it's that now it exposes weakness in other parts on the Cosmo, like the tires. The DG-5's are definitely putting more pressure on my old Yokohama DNA S.drive tires. I'm thinking the next major upgrade is going to be new tires and wheels (one piece forged RAYS if I can afford it). I do find my self driving the Cosmo harder now and enjoying it more than ever before which is awesome but I am also trying to keep it in one piece!

Well that's all for now...Thanks for reading and if anyone as any questions etc, post away! :D
 
:
Mazda Axela 4WD GT (Lexie)
Where are you located again Antoine?
Im flying down to Honshu in February, would love to have a look at your beast.

Cheers,
Bruno


Sent from my iPhone using Tapatalk
 

Antoine

Administrator
Thanks for the heads up and kind words! (2thumbs)


Awesome, keep upgrading! These things handle better than their weight leads you to believe.
They sure do, I'd like to put the Cosmo on a subtle diet...Take weight off in a way that won't "take" away from the overall EC experience and look while enhancing performance at the same time. I've done a bit of that already with boltons and now the coilovers but I would like to replace the wheels and brakes in the future and eventually the exhaust...All with lighter, stronger and higher performance parts!

The Eunos Cosmo deserves it, damn it! (werd)


Where are you located again Antoine?
Im flying down to Honshu in February, would love to have a look at your beast.

Cheers,
Bruno
Hey Bruno!

Cool, I'm in Kobe although I don't know how much driving I'm going to do in February given the cold weather and my schedule but it would be great to meet up etc...Let's keep in touch! :D
 

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