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AMR33

By AMR33,
in Suspension, braking and tyres

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AMR33 Mentor

AMR33

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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.

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warps
warps

What is this fascination people have with second hand suspension? In most cases a set of new dampers into your old suspension will be miles ahead of crappy second hand shit that's been in 20 different

GTSBoy
GTSBoy

Too stiff.

GTSBoy
GTSBoy

FYPFY

niZmO_Man Grand Master

niZmO_Man

Posted
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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'.

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GTSBoy Grand Master

GTSBoy

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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.

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AMR33 Mentor

AMR33

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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?

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niZmO_Man Grand Master

niZmO_Man

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*damped*

Just sayin'

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

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.
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GTSBoy Grand Master

GTSBoy

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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.

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V28VX37 Veteran

V28VX37

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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 :)

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owen1r Collaborator

owen1r

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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 by owen1r
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AMR33 Mentor

AMR33

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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

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