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Tech Talk Technical Discussion About The Nissan 240SX and Nissan Z Cars |
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#1 |
Post Whore!
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Any handling/allignment buffs out there?
I'll soon be getting my allignment done and i would prefer to walk into the allighment shop with the specs i want my car set at... I figure its less for them to mess up, and i'll get a better end product.
Can anyone give me specs they recomend for my driving/setup? S14 with front and rear sway bars, nismo power brace, adj. tension rods, tie rods(adjustable bump steer), f and r strut bars, coilovers, camber plates in front and top hat in rear. The rear multilink is stock. rolling on 18" rims w/ 245/45/18 front and 255/45/18 rear. My main goal is traction and handling, and drifting is second priority. PLEASE...anyone have suggestions? |
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#2 | |
Post Whore!
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i'd talk to one of the viceroy guys about it, they seem to know their suspension specs
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#4 |
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i do my own alignments via toe plates and camber/caster gauge and turn plates as well as a long ass leveler, but i wouldnt consider my self an alignment buff lol.
anyways i run front settings at -2.5 camber, 8* caster, and 0 toe. you can run toe out for "better turn in" but when you are at full lock if youre into drifting youll have major toe out due to the ackerman effect, but youll have that no matter what. i am at 0 toe front like i said and at near full lock it becomes like 3 inches of toe out. rear i run -1.5 camber, and like 1/16 toe in. toe in in the back gives it more grip and makes it tad more understeery, and the low camber also gives it good grip and makes tires wear decently for drifting. i would wait until you can get rear ruca, and atleast traction rod or toe link whatever those are called so you can actually make a good ammount of adjustment back there depending on your height you might need it. also, "rollin" on 45 series for 18 inch wheels is kidna tall for a 240sx. just set your tie rods at max adjustment for bump steer i guess since the shop you are going to (whichever you choose) probably doesnt have a bump steer gauge.
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#5 | |
Post Whore!
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#6 |
Zilvia Member
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Werd to the lifetime alignment plans. It's the only way to go when you have coilovers and other adjustable stuff. I get at least 12 alignments a year.
You kinda have to figure out what you like for yourself, and whether or not you care about tire wear becomes and important issue as well. I personally run -2 to -2.2 front camber, -1.5 to -1.7 rear camber and 0 toe all around. It's a good grippy setup on the street and won't wear tires. General consensus is that -2 to -2.5 front camber and -1.5 to -2 rear are good ranges for grip driving with daily driven track s-chassis, probabably more camber if it is a dedicated track car. I can't comment on toe, because i don't fiddle with it much. Once again though, find a place that does lifetime alignments. It will allow you to play around with stuff more and change the height of your car at any time and still have an in spec alignment. You should also look into some smaller diameter tires. 255/45/18 is MASSIVE. |
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#7 |
Post Whore!
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There aren't any places around here that give lifetime allignments for "race specs". However i have a place that will do 4 wheels allignment to my specs for 40 bucks. I understand it wont be PERFECT, but i want a starting place and i'm sure there are SOME people on zilvia who really know their allignment shit.
I'm surprised no one has even mentioned caster yet. :-( Yes, the tires are large but they look/work just fine. (i know, i know, i'm not in with the in crowd because i'm not rocking 205's on a 10 inch rim...)Sometimes you gotta use what you have/can afford. |
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#9 |
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People wont warranty race spec alignments because its going to wear your tires like shit unless you actually drive the car. The alignment is not going to hold well if you are actually driving it hard to boot.
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#11 |
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-2.0 degrees camber up front, -1.0 in the rear.
Half a degree or less of toe out in the front. ZERO toe in the rear. A few degrees more caster in the front. Set your coilovers pretty soft in the rear and adjust bumpsteer to match your ride height. Enjoy.
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#12 | |
Nissanaholic!
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Next time I get my alignment set its gonna be.
Camber 3.2F 1.7R Caster 9 Toe .25IN on both axles Quote:
Last edited by McRussellPants; 11-05-2006 at 12:19 PM.. |
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#14 | |
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#15 |
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dousans specs are pretty good, although personally i go for a little toe in on the front to keep the car from wandering around on the highway. sacrifices a little performance for more drivability.
im prob gonna be running 3 front rear, stock toe, 8 ish caster. if i can fit it without rubbing gonna try 2.5 front 3 rear but thats more drifty less gripy |
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#16 | |
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#17 |
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I have the camber set at -2.0 all the way around
Caster is at like 7.8-7.9 And I usually try to get the toe as close to zero all around Next time I think I am going to take out some camber up front and kick up the caster to like 8.4 Pretty much I just change it after every event to see where I feel the most comfortable at. |
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#19 |
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Id say stay away from the toe out. Make sure its zero toe up front. If you want, a little toe in in the rear.
I have minimal (less than .5 toe in) toe in for the rear at the moment. On s13s especially when the car squats the rear will toe out. Thats why I toe it in a bit. S14s rear suspension supposedly address the squat issue, but i would do the same on a s14, just to err on the safe side, or at lest until I could tell otherwise. I also agree with everyone who has said to get rear adjustable camber and toe arms. Stock ones are :ghey: on many levels. |
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#20 |
Post Whore!
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well like stated before...you need to state your goals a bit more clearer...there are a lot of aggressive alignments in this thread and people who do different things with their cars...for instance, general toe settings for people who are into drifting is zero toe...but if youre into road racing (and im not talking toughey) and auto x, you may want some toe out in the front for more turn in...and to take caster to the maximum within stock spec (iirc, 6.8 or something) for auto x...etc. etc. etc...so you should ask yourself what youre gonna do with the car first and foremost...
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#23 | |
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#24 | |
Nissanaholic!
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Camber will depend on the tires. Hoosiers will make peak grip at 4.5+ degrees, grandmas all seasons will make it at 10 Macpherson struts on lowered high spring rate cars need alot of static camber. Autocross gets a heap of toe out as well. Setting up a car to do autcross well would be lame since over 70mph you'd probably end up in a ditch. |
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#25 |
Zilvia Addict
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Toe is what really wears tires, so just be smart about it. I run like 1/8" toe in front and rear on my S14, to keep the back in check and because when actually driving, the front suspension is pushed back slightly and gets pretty close to 0 toe, thus saving your tires during daily driving. I also run like 8* caster, 2.5* camber front, about 2* camber in back. This setup is for open track use, and some street driving with 245/40 Kumho MXs. I have perfectly even tire wear after 3 track events, an autoX, and about 5000 miles of street driving, city and highway. For more autoX use, you might want to go with 0 toe in back, but it will definitely be a little more squirrely. Get some toe plates and you can tweak it yourself to see what suits your driving style best.
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#26 |
Post Whore!
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thanks again for all your time guys...
I suppose i should have been more specific. Basically i'm setting this up for optimum handling. I'll try to explain the situation. The car is driven on on weekends and sometimes to and from school. Driven in mountains and backroads often. SOMETIMES it will make a trip from san diego to L.A(couple hundred miles roundtrip). I DONT want to set the car up for auto-x but i would like a happy median...Maybe between daily and auto-x ( i know, its not really ideal) Basically, if the car is driven 4 hours, 3 of it is in back roads/mountains where optimum handling(between speeds of 10 and 80mph) is prefered. Kinda make sence now? I'm also considering swapping to 285/35/18 rear tires, and 255/35/18 fronts. Again, sorry to sound like an idiot...i guess i didn't explain so well, and i didn't know that setting a car up for auto-x would make it so terrible to drive on the highways. I'm deff. sticking with -3 or -2.5 camber front and -2 rear as a starting point. Rear toe i'm thinink at 0. Front i'm still inclined to try .5 OUT to help with turn in, but some say not to... why not a little? For caster, still thinking near 8 as thats what many recomend. |
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#27 |
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Look through here
http://www.zilvia.net/f/showthread.p...ghlight=camber |
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#28 |
Post Whore!
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your braking is going to suffer drastically at -3.0 degrees up front...esp for mountain driving...besides the aggressive camber, id say youre on to something...half a degree toe out in front seems perfect for a spirited driver that also DDs...glad you learned a thing or two...have fun and dont get frustrated if what you get isnt what you wanted...its a loooooooooong and drawn out process....
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#29 | |
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#30 |
Post Whore!
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FUCK. SW20- I didn't think of the brake loss. SHIT. I suppose I want my cake and would like to eat it too!!! Whats so wrong with that! lol.
Creizai- I'm not an expert, and hopefully he will come back to give final word....however. Just by thinking of the way things work... Negative camber in front will rock the top of the tire in. Meaning while rolling STRAIT you are essentially on the inner edges of the tire, and not the entire tread width. When stoping More contact patch usually = more braking ability. So, now my question is... What is a happy median between camber effects on handling/braking. If i go much less than 2 i'm pretty sure my handling will suffer dramatically in the turns. Will neg. 3 really effect braking that much? |
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