Back End Feels Light

[AMR33]

Yeah definitely man. They are most likely on their way out. I was looking at MCA and heard good things about it. It is a bit pricey though, but they have been proven on the track. I'll keep an eye out for some second hand stuff atm and we'll see what happens.

[niZmO_Man]

A mate of mine got 8kg/8kg MCA Blue for his Evo7. With 245/40/18 Hankook RS3 rubber, the ride was unnaturally comfortable, almost standard-like. We drove through some rough roads that my GT-R would never be able to do at the speed his Evo went (like 50 km/h, really rough road). It was incredible.

Shows that a well dampened unit can use higher spring rates 'comfortably'.

[warps]

Shows that a well dampened unit can use higher spring rates 'comfortably'.

*damped*

Just sayin'

[GTSBoy]

A mate of mine got 8kg/8kg MCA Blue for his Evo7. With 245/40/18 Hankook RS3 rubber, the ride was unnaturally comfortable, almost standard-like. We drove through some rough roads that my GT-R would never be able to do at the speed his Evo went (like 50 km/h, really rough road). It was incredible.

Shows that a well dampened unit can use higher spring rates 'comfortably'.

And also.....you cannot compare spring rates between cars. Different suspension geometry means that there are different lever arm lengths working on the suspension unit. a 4kg spring on one car might be quite firm but be waaaaay too soft on another, simply because the second car has a longer lever working on it. Squishes the spring less, but can apply more force over that short distance.

[AMR33]

Thats right. Which brings to the question, can you compare spring rates on the same model of cars. So can we safely compare spring rates among R33 GTSTs? Im guessing to a degree we can, but obviously the different setups guys run and different components they use and possibly allignment specs will have a bearing so it won't be a dead accurate comparison. Yay? Nay?

[niZmO_Man]

*damped*

Just sayin'

Thanks, didn't proof read (shifty typing at work ).

And also.....you cannot compare spring rates between cars. Different suspension geometry means that there are different lever arm lengths working on the suspension unit. a 4kg spring on one car might be quite firm but be waaaaay too soft on another, simply because the second car has a longer lever working on it. Squishes the spring less, but can apply more force over that short distance.

Yeah I agree, but 8kg springs on any road going car should be noticeably stiffer compared to stock, no? I drove and rode in his car before the change, I changed the standard struts out my self on the weekend. Reference to my GT-R was to paint the condition of the road we went over, not to compare the two cars' handling.

Thats right. Which brings to the question, can you compare spring rates on the same model of cars. So can we safely compare spring rates among R33 GTSTs? Im guessing to a degree we can, but obviously the different setups guys run and different components they use and possibly allignment specs will have a bearing so it won't be a dead accurate comparison. Yay? Nay?

Agree. Best way to compare is to ride in the car itself, which of course is pretty difficult.

[GTSBoy]

Any 2 R33s (so long as not comparing GTST with GTR as the weight distribution is a complicating factor) can be compared spring rate for spring rate. Everything else in them is the same unless someone has significantly longer lower arms or the like.

That said - ARBs are a confounding factor that most people neglect when talking about this stuff. You cannot compare my car to one with 8kg coilovers if they only have stock ARBs. My ARBs probably contribute 50% of my roll stiffness and maybe 50% of my single wheel bump stiffness (if I could be bothered figuring it out). On the 8kg coilover car, that could be only 10%. Just to make up a believable random comparison.

[AMR33]

For those of us (well me) who dont know, what are ARBs?

[Ben C34]

Anti roll bar.

Also known as Sway bar

[GTSBoy]

Anti roll bar.

Also (wrongly) known as Sway bar

FYPFY

[AMR33]

Oh yes yes, cheers

[V28VX37]

Any 2 R33s (so long as not comparing GTST with GTR as the weight distribution is a complicating factor) can be compared spring rate for spring rate. Everything else in them is the same unless someone has significantly longer lower arms or the like. ...

Good to know, I always wondered about that. I once worked out that the stock springs are like 2.7kg/mm or something so all the Jap spec stuff at 10 or 12 kg/mm seem completely over the top. I also find it interesting how small the coilover spring diameter tends to be compared to the stockies, they're tiny...

Also great point about the swaybars, it seems that a lot of cheapie coilovers attempt to take on the job of the swaybar by upping the spring rate. Instead a lower spring rate + bigger swaybars is the better solution AFAIK. At least that's what I did

[Ben C34]

ARB!

don't make him angry.....

[AMR33]

So I was thinking of going something like this for now, for 'testing'. What do you guys think? Anyone know what spring rates these may be? Seller doesnt know.

http://www.ebay.com/itm/281478597591?item=281478597591&viewitem=&sspagename=ADME:X:RTQ:MOTORS:1123&vxp=mtr

Cheers

[AMR33]

Did some research and I'm pretty sure they will be 10/8. But if anyone thinks differently, let me know. And let me know what you guys think of those in general.

Cheers

[AMR33]

One last thing, how do I know if a set of coilovers has adjustable damper by looking at it?

Cheers again

[owen1r]

One last thing, how do I know if a set of coilovers has adjustable damper by looking at it?

Cheers again

Little adjustment knob, most likely on the top sometimes on the bottom. Google for pictures of BC coilovers to give yourself an idea.

The ones you have linked are damping adjustable by the look of it.

Edited October 29, 2014 by owen1r

[AMR33]

Cheers owen. I also think they are damper adjustable. The seller says they are so Im thinking they are the zero 2 cusco coilovers. Do all BC coilovers come with adjustable damper?

Cheers

[niZmO_Man]

MCA Blue are around $1,500.

[AMR33]

would they be good for track