D2 Coilovers?

[Mac Attack]

I'm in the market now for some coilovers. I prefer the reight-height and dampening adjustability, along with a weight savings. Otherwise, I would have gone with new Bilsteins and OEM springs.

I preferred the Tein RA/RE's, but those are very hard to find now being out of production. Would like to stay below $2k.

That said, I was looking at the SOS JIC and the D2 RS's. The D2 RS's are Taiwanese-made and less than half the price of the JICs (at $800 shipped), but seem to have a good following with few problems on the internet. They have been used by a few NSX's on the street with no reported problems that I've found (quality, etc). Like any suspension setup, ride is highly subjective (except for the experts). They are rebuildable as well in the U.S.:

http://www.d2racingsport.co.uk/Pages/coilovers.asp

I was hoping to get some opinions on these please from people who have had experience or know others with experience. Eventually I would like to do some HPDE's after this car is retired as a daily-driver, and was wondering if anyone has track experience with them or know of others with track experience? I don't have any other mods, but my OEM shocks REALLY need to be replaced. It's getting too bouncy on the street as my daily-driver!

Furthermore, the "Type Top Ones" ( at the bottom of the above-linked page) are fully adjustable with an external reservoir. These are ~$2k shipped. This is what I was leaning towards - any thoughts please?

Thanks,
Dave

 

[Mac Attack]

After reading about the G2's, I think I'm leaning that way now.

I completely agree with John's post below, and his 350z link listed the D2's as coilovers to consider.

http://www.nsxprime.com/forums/showpost.php?p=887163&postcount=6

I would like to go with the Type Top Ones, but I'm still concerned about quality (especially getting 2-way adjustable dampeners with remote reservoirs for "only" $2k), and lack of info on these things. A dampening force curve would be nice for example. This only has the curve before the 1million cycle test at 1cm deflection, notice that the third page with the figure AFTER the test is missing? (courtesy of http://www.d2racingsports.com.au/testreport.html):

Also, these have cast iron or sintered cylinders - is that a good thing or not?

Furthermore, their "race" application has an oil/nitrogen pressure of ~200 psi. Moton is around 150-300 psi. Isn't highest pressure the best since that keeps the oil from "boiling?"

http://www.d2racingsport.co.uk/Pages/coilovers.asp



Sorry - I know it looks like I'm trying to convince myself not to get these.

It just seems like these may be pretty nice, but then again, I would rather get burned on a set of $800 coilovers than on a set of $2k coilovers :frown:

Thanks,
Dave

 

[angus]

probably best to stick with more proven brands (unless you drive a civic)
btw, I've personally seen a d2 shock blown after only 8 mos.(on a civic)

 

[NSXDreamer2]

probably best to stick with more proven brands (unless you drive a civic)
btw, I've personally seen a d2 shock blown after only 8 mos.(on a civic)

I've heard simular thing about D2 before, but then the good thing is where it happened, they have a shop to rebuilt it and they just replace a new one to the guy.

knowing that you are using your car as DD and then some track duty, I will stick with proven brand too.

 

[Mac Attack]

Thanks, I think you guys are right.

 

[I1O101I]

U should try a set of SOS JICs. I have installed them in 2 NSXs already, they work great for track and still drivable for street use.


Bryan

 

[96cxt]

I got D2 on my nsx and I love em. I don't track my car so I don't know how good they are performance wise. I just wanted to have the adjustability on the height and a smooth ride.
But if you are going to track you X then stick with proven brands.

GL

Rahim

 

[stuntman]

Furthermore, their "race" application has an oil/nitrogen pressure of ~200 psi. Moton is around 150-300 psi. Isn't highest pressure the best since that keeps the oil from "boiling?"

Canister pressure (aka: Nitrogen pressure) is the pressure of the nitrogen in the damper. It's more of a damper oil 'cavitation' problem than 'boiling' problem.

Higher canister pressures are like adding artificial spring rate. They resist body roll like higher spring rates initially before then going though the stroke of the damper compressing. It's a little more technical than a simple 'prevents cavitation' or 'adds more spring', but that's a rough idea of what it does.

Never heard of D2 nor never driven on them. Anyone wanna offer a test?

 

[spase]

Never heard of D2 nor never driven on them. Anyone wanna offer a test?[/QUOTE]

I will, next time you come to AUSTRALIA. :biggrin:
I have D2 and I love them.

 

[stuntman]

Do they have a website?

All I can tell from my brief search is that they are another offering from China.

 

[RON98]

i was just looking at a set on ebay for my mr2.

seems they have a japanese racing team :biggrin:

never heard much about these either.

http://www.d2racingsports.com.au/profile.html

crappy website but they got stores im drolling over

btw, what is this red neck monkey business?! ---> "Buttonwillow Track Record Holder for Semi Truck - 3:08 " :tongue:

 

[Abrunod]

In a few week i will try on my nsx the importer here in italy i gave me all the assistence with different spring and all

So if you have time for wait i will let you know

Now i have bilstein and eibach

so i can give you more feedback i will try in NURBURGRING the 20 juin


I will let you know

Reagards
Andrea

 

[Swift]

i just skimmed this but FYI


D2 coilovers= painted Ksports.


I have installed ksports on other vehicles and they are top notch quality.

 

[Abrunod]

D2 coilovers= painted Ksports.


I

Not realy they look the same outside but inside are different material like my friend that open all both told me

But i will tell you in around 10 days they are in the airport here in italy for customs duty so i think in few day i can tell you something more

Andrea

 

[menfou]

I tried D2 coilover, and Tein Monoflex is 1000% better.

 

[JeffShoots]

I tried D2 coilover, and Tein Monoflex is 1000% better.

Isn't the "Tein Monoflex" a low end single adjustable

I'm not up on the "Tein" name but I've seen the weekend guys selling them and moving up.

I've seen "Koni" 2-ways (like CT used) bend that little shaft. That's why I mentioned the "Motons" as you turn down the 2-way adjustments and comfortably drive around town (I would say better ride than stock :tongue: ) then with a few turns of the adjustments it's a track BEAST. Look at the shafts on the "Motons" must be 5/8"

Has been the best performing setup I've driven (on an NSX) other than a full custom set of 3-way "Penske" on my 3rd Gen Rx-7 but that cost ~9k :redface:

Just don't cheep out on suspension if you are going to the track often. Use good parts, sways, and mounts.

When I was driving my car "STOCK" that's the best thing I did for my car. First a large front sway, W/stock rear sway then better suspension W/ the higher rate springs (IN THE FRONT). A little loose but safe and fun. You won't be kicking yourself later with the good stuff and have to use the SELL to upgrade option :smile:

 

[Abrunod]

Just don't cheep out on suspension if you are going to the track often. Use good parts, :

Why D2 must to be not good only beacause cost less??

So bilstein are not good beacause cost like d2?

I don't understand

The material like they are made its same alluminium made from the old tein the oil its the same they look the same also internal...

The spring steel are the same

The point i think its another

D2 have the knwoledge of tein? Or they copy with cheeper material?

Usualy all the brand are the same the different ita btw material that used.


So i don't think that any brand of coilover use to make test on evry car that they have in catalog but they make a coilover standard then they adapted for evry single car

For example oh NSX mid engine bla bla so we need this spring and this oil

oh porsche back exposed engine we need this spring etc etc

Its realy simplyfie but i hope in my bad english that you understood the concept

Andrea

 

[stuntman]

I tried D2 coilover, and Tein Monoflex is 1000% better.

If that's true, then it shuts down everyone who said that D2s were above the offerings from Asia...

If you can get those Moton Club Sports for a good price, go with that. If not, then wait out until KW comes out with their V3 (and maybe clubsport) :biggrin:


D2 isn't the same D2 that was on the Mercedes DTM and LM cars back in the late 90's was it? (I think it may be... )

 

[JeffShoots]

Why D2 must to be not good only beacause cost less??

So bilstein are not good beacause cost like d2?

I don't understand..............
Andrea

What don't you understand I just pointed out COMPTECH MACHINE a +$3k plus suspension I've personally seen bend the main "Koni" shock shaft. It may have been the extreme race alignment or R comp tires but I now look for quality :tongue:

Your right about most companies using the same cartridge just look at the replacement part numbers. Also look who is your nearest rebuilder of said cartridge.........Koni service, Tein, or whatever you buy as some may not have a service center near you.

And all cars have a different mount. I got lucky and found pillowball mounts (APEXY?) for the front but had to have custom rears made =$$$$ :frown:

 

[stuntman]

What don't you understand I just pointed out COMPTECH MACHINE a +$3k plus suspension I've personally seen bend the main "Koni" shock shaft. It may have been the extreme race alignment or R comp tires but I now look for quality :tongue:

Your right about most companies using the same cartridge just look at the replacement part numbers. Also look who is your nearest rebuilder of said cartridge.........Koni service, Tein, or whatever you buy as some may not have a service center near you.

And all cars have a different mount. I got lucky and found pillowball mounts (APEXY?) for the front but had to have custom rears made =$$$$ :frown:

You bent the shaft on a Koni damper for an NSX? -that's not even a strut?

 

[JeffShoots]

You bent the shaft on a Koni damper for an NSX? -that's not even a strut?

No.....it was CTs coil-over race kit that uses the Koni cartridge.

 

[stuntman]

No.....it was CTs coil-over race kit that uses the Koni cartridge.

All i'm understanding is:
Not on an NSX.
It was a Comptech coil-over race kit
The shock housing uses a Koni insert/cartridge.


-still dosn't tell me anything. What car was it on, was it a STRUT damper or not?

 

[JeffShoots]

All i'm understanding is:
Not on an NSX.

No Billy, On an NSX and if you get a chance look at Kips car. He was still running them last I looked ~3 months ago? You will see the Koni 3012 has a skinny shaft under 1/2" easy. I though Mike was still running the Motons on the unlimited car? 2-way or did you step up to the 3-way?

DESCRIPTION:

Comptech Pro(Koni 3012)
Comptech Pro coil over suspension. This was the best Comptech ever offered!

These use Koni 3012 race dampers on all 4 corners, with separate rebound and compression adjustment.

Adjustable spring perches and they have the standard issue 1000 lb. front, 600 lb. rear coils.

 

[stuntman]

No Billy, On an NSX and if you get a chance look at Kips car. He was still running them last I looked ~3 months ago? You will see the Koni 3012 has a skinny shaft under 1/2" easy. I though Mike was still running the Motons on the unlimited car? 2-way or did you step up to the 3-way?

DESCRIPTION:

Comptech Pro(Koni 3012)
Comptech Pro coil over suspension. This was the best Comptech ever offered!

These use Koni 3012 race dampers on all 4 corners, with separate rebound and compression adjustment.

Adjustable spring perches and they have the standard issue 1000 lb. front, 600 lb. rear coils.

Factor X never ran 2-way Motons. It was always 3-ways.

I think my original question turned into... I dont even know what happened to this topic. You originally posted:

What don't you understand I just pointed out COMPTECH MACHINE a +$3k plus suspension I've personally seen bend the main "Koni" shock shaft. It may have been the extreme race alignment or R comp tires but I now look for quality :tongue:

Your right about most companies using the same cartridge just look at the replacement part numbers. Also look who is your nearest rebuilder of said cartridge.........Koni service, Tein, or whatever you buy as some may not have a service center near you.

And all cars have a different mount. I got lucky and found pillowball mounts (APEXY?) for the front but had to have custom rears made =$$$$ :frown:

In BOLD. I asked if you have seen a koni shaft bend on an NSX?

It appears from you last post that you were referring to Kips car.

I am surprised a Koni damper bent its shaft on an NSX because it does not undergo the loads of a strut-type damper.

-that was my whole question/point.

 

[JeffShoots]

I agree but NOT on Kips red car on a full mono-ball car. The same setup Factor is running.

........It appears from you last post that you were referring to Kips car.

I am surprised a Koni damper bent its shaft on an NSX because it does not undergo the loads of a strut-type damper.........

And that's why I posted:

..........COMPTECH MACHINE a +$3k plus suspension I've personally seen bend the main "Koni" shock shaft. It may have been the extreme race alignment or R comp tires.........