suspension set ups, regrets? godspeed?

Forum for Nissan wheel fitment, tire selection, suspension setup and brake discussions.
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Red coupe
Posts: 12216
Joined: Wed Sep 15, 2004 6:51 pm
Car: 92 Nissan 240sx Coupe

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FRnIsmO wrote:lol somewhat, but something like the left side might drop more then the right after a few potholes...
Usually when people say adjustable shocks, they mean the actual valving inside the shock is adjustable to control how much resistance it offers to movement. I guess if you set them on two different levels one side COULD drop more... but no, really that would all be a quality control issue... so don't buy cheap crap

The only real issue is that you get more ways to set them wrong... but if you don't notice what the changes you are making is doing chances are that its not that important anyways... once you get a feel for it its really nice to have as you can effect the balance of the car as you do other modifications... or even just to fit your preferences and use of the car.


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FRnIsmO
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Joined: Sat Jun 28, 2008 7:27 pm
Car: 240sx fastback
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cool, thanks for the info

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Red coupe
Posts: 12216
Joined: Wed Sep 15, 2004 6:51 pm
Car: 92 Nissan 240sx Coupe

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lol, well thanks for being willing to listen and not getting bent out of shape when someone questions if you know what your talking about.

I'd encourage you to read... a ton... but be weary of reading too much of things like this thread. People will be so quick to say "OMG get 10/8 coilovers! stiffer!" when they are never gonna be on a track and its not too hard to go stiff enough to lose grip on bumpier surfaces like streets and mountain roads.

Hell even KTS at 8/6 loose some grip on roads that aren't ideal. Also look at the stiffness of the the springs, not just the drop... stiffness will be given in the force (quite you physics majors, close enough) required to compress the spring a certain amount. Typically stuff for imports will be in killograms per mm of compression, so the springs on the front of KTS coil overs take 8 kilograms of load to compress 1 millimeter. Domestics are often given in pounds per inch of compression. Stock on a 240 is about 2kg/mm front and read iirc, should be in the stickies at the top of the forum.Be sure not to make the mistake of comparing spring rates from one type of car to another... Honda spring rates will seem crazy, because the spring is further inboard so the suspension arm acts as more of a leveler, so a stiffer spring is needed to give the same rate at the wheels.

zerothread/11638This is a good thread, with a fairly comprehensive list of 240 spring rates. If you have S-tech those actually don't look too bad...

for a street setup RSR race springs, a GOOD pair of adjustable shocks, ground control coil overs, camber plates(if needed/wanted), adjustable swaybars (I have whiteline, and progress, progress is damn good... but i dunno if they are still made? I couldn't find them thats why I went with whiteline)...

AND MOST OF ALL GOOD TIRES (all suspension works just seeks to optimize the tire...it is the ONLY thing holding you to the ground, remember that.)

I think the above would kick some ***. I haven't owned or even ridden on the RSR springs, but the rates look good... and some respectable guys here have spoken highly of them.

Of all the areas I would try hardest not to skimp on shocks or tires. Most the other pieces are just metal. Springs you gotta trust that the maker is giving you good rates... but thats easy enough to just steal from another company, and the manufacturing isn't overly difficult. But shocks... quite a bit to skimp out on or mess up in manufacturing, not so much so that they will break... but dampening the spring can be a demanding job, and the smoother the load you can put on the tire the better.

Tires also are incredibly complex, your best answer is to say **** tread wear and pick up something like a Falken 615, or the Hankook RS-2 (did I mess that up?)

I just finished up reading about 75 pages of pretty damn detailed info on tires...just to give you an idea of how complex they are...and that doesn't even include going into the chemistry of tread compounds.

I think I have rambled sufficiently for now....

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FRnIsmO
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lol its definatlyl more complicated then "gas and ignition" but it all makes sense...i love the faq page you listed i never read that b4. i'm glad this is more then just a place to check out pics of member cars and vent on common problems. this is actually my first forum (ever) so i am pritty slow (NeWb) but i love the info and feedback. thanks, when im questioned i understand myself and what i know do bring it on lol.

Kalypso
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Joined: Tue Jul 24, 2007 10:10 am

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here is a very useful article on the affects of suspension tuninggoogle any terms you dont know like "Roll resistance"

http://www.wtrscca.org/tech.htm

all the suspension parts you'll ever need have been posted somewhere in this thread.

welcome to NICO

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Eddie
Posts: 203
Joined: Tue Dec 30, 2003 4:26 pm
Car: 1995 240sx se

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FRnIsmO wrote:what would you guys think is the best next move?
TIRES.

Set up: I have eibach prokit, tokico blues, polyurethane T/C bushings, aluminum subframe inserts, front strut tower bar, suspension technique sways, yokohama s.drives, VLSD differential.

Regrets: I would have invested in linear rate springs with higher spring rates and better struts. Thats what I will do when money allows. Dream street set up is RSR race springs, Koni yellows, and adjustable upper mounts.


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