![]() |
|
Chat General Discussion About The Nissan 240SX and Nissan Z Cars |
![]() |
|
Thread Tools | Display Modes |
![]() |
#1 |
Zilvia Member
![]() |
Chassis Brace Theory Q...
so recently I've formed an obsession on bracing:
I'm sure you've seem my posts on Foam, Spot welding, and etc. my question today: would it be useful or worth the trouble (time & money) of bracing the frame before the front struts (ie radiator area) or bracing after the rear struts (ie trunk area) will that help at all???? other than the obivous of better handling what other bebnefits are thee to stiffening up the chassis? thanks again ![]()
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) Last edited by formeRiceR; 06-06-2006 at 10:07 PM.. |
![]() |
![]() |
Sponsored Links |
![]() |
#2 |
Zilvia Junkie
![]() |
nismo power brace has proven that bracing in front of the struts helps, i'd imagine the same theory could be applied to the rear. my only semi-logical argument for this is that the flexing occurs at suspension mounting points, so the further you get from them, the greater the change. The brace will have a leverage advantage to be further from the point of the force, but, it will be ineffective in stopping the deflection if it is too far away.
If you are so keen on reducing chassis flex though, why not just go to a full cage that ties into the mounting points.
__________________
ASE Master Technician |
![]() |
![]() |
![]() |
#3 |
Nissanaholic!
![]() |
Nismo Power Brace, Inner Fender Braces, Strut Tower, Good Cage.
Done and Done, don't waste money on shit tons of hinged bars, if you really want to get ritzy reinforce your subframe and such. |
![]() |
![]() |
![]() |
#4 |
Zilvia Member
![]() |
so this will be a street car so having a cage in there is not going to happen, I will not be wearing a helmet 24/7 and I don't want my head sheared off in the event of an accident. I was wondering what are my other options other than a full cage. Rigidity without compromising saftey.
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
![]() |
![]() |
![]() |
#6 |
Post Whore!
![]() Join Date: Sep 2002
Location: Arden, NC
Age: 39
Posts: 4,460
Trader Rating: (1)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 1 reviews
|
RXB is better than STBS.
__________________
My 240 vBgarage |
![]() |
![]() |
![]() |
#8 |
Leaky Injector
![]() |
to stiffen the chassis dont waste your money on any kind of strut bar or lower tie bar that has hinges because those just flex with the car. get something that is solid like the carbing strut tower bars or dc sports.
|
![]() |
![]() |
![]() |
#9 |
Zilvia Junkie
![]() Join Date: Feb 2004
Location: Denver, CO
Age: 40
Posts: 381
Trader Rating: (6)
![]() ![]() ![]() Feedback Score: 6 reviews
|
the only real reason that you would need to stiffen the chassis is if you thought that the chassis was flexing while you were driving. it won't be flexing much unless you are driving hard (say, at a track). One of the ways that you might arrive at the conclusion that your chassis is flexing is if you make suspension adjustments to correct for handling problems that should work, but they do not work. overall, i would say that for street use, the chassis is prob plenty stiff enough without additional bracing.
|
![]() |
![]() |
![]() |
#10 |
Admin Asshole
![]() Join Date: Mar 2002
Location: Retired
Age: 44
Posts: 20,394
Trader Rating: (0)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 0 reviews
|
Do you really need to start a new thread everytime you come up with a new idea about bracing? Wouldn't one thread have been enough, and then you could just add your questions as they came to you?
__________________
"Speak softly,..." -Pres. Teddy Roosevelt "Be polite, be professional, ..." -Gen. James Mattis |
![]() |
![]() |
![]() |
#11 | |
Zilvia Addict
![]() Join Date: May 2005
Location: Murder City
Age: 41
Posts: 673
Trader Rating: (0)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 0 reviews
|
Quote:
Any reason why sway bars have not been mentioned or are they not considered to be chasis bracing? Those seem to be beter on the car then strut tower bars. Althought the carbring does look like a nice piece and a rear strut bar is very helpfull on fastbacks.
__________________
"If you rock knock-off, you are part of the problem" -myself |
|
![]() |
![]() |
![]() |
#13 | |
Zilvia Member
![]() Join Date: Dec 2004
Location: Oxford, UK
Age: 42
Posts: 206
Trader Rating: (0)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 0 reviews
|
Quote:
|
|
![]() |
![]() |
![]() |
#14 | |
Zilvia Member
![]() |
that's a good idea.... will do sir
![]() Quote:
Do these bars help that much stiffness? Which offers the most safety? Can I use them at Auto-X????
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) Last edited by formeRiceR; 06-07-2006 at 09:51 PM.. |
|
![]() |
![]() |
![]() |
#15 | |
Guild of Skullduggerous Intent
![]() |
Quote:
|
|
![]() |
![]() |
![]() |
#17 | |
Zilvia Junkie
![]() Join Date: Jan 2006
Location: Seattle/Olympia, WA
Age: 38
Posts: 510
Trader Rating: (3)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 3 reviews
|
Quote:
Any bracing beyond this probably isnt needed. Front end bracing(as suggested) is always a good idea for s-chassis no matter what you're doing. These front ends are floppy as fuck. I've a power power brace, strut bar, shakitto plates and some custom fender braces on the way, and I can say that all these braces respectively make a marked improvement in general handling and response. Bracing the rear of the chassis is best left to a cage or roll bar(weld them please). Buying trunk brace and underchassis bracing isnt as cost effective as even a custom cage would be. |
|
![]() |
![]() |
![]() |
#18 | |
Zilvia Member
![]() |
custom fender braces that sounds interesting, did you fab them up yourself, any pics???
Quote:
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
|
![]() |
![]() |
![]() |
#19 | |
Leaky Injector
![]() |
Quote:
i dont know about that, a s13 hatch's chassis has a lot of open space inside of the car. especially if your car has a moon roof you lose some rigidity. when i pull my car in the driveway sharply from the street going about 2mph i can hear the moon roof lift a bit, so i know the chassis is flexing. my car however is completely stock so i guess that is expected but still i think any stock car can use some bracing (i.e. strut bars etc) if you do "spirited driving". |
|
![]() |
![]() |
![]() |
#20 |
Premium Member
![]() Join Date: Apr 2003
Location: SD SoCal / Jax, Fl
Posts: 659
Trader Rating: (0)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 0 reviews
|
Is there any feasible way to quantify the gains made by any one piece of chassis bracing?
I love my butt dyno and take it everywhere I go but to be honest I've never really calibrated it to ensure the system is within specifications. In fact if you ask my friends and coworkers they might even say it's out of tolerance and emits strange random odors that are quite unpleasant. Uhm so back on topic, would an actual skid pad work for quantitive measurements? Does anyone have actual experience in this field that could shed some light on the topic for me?
__________________
Need a 96 driver side window switch. Feel free to pm me with a price |
![]() |
![]() |
![]() |
#21 |
Post Whore!
![]() Join Date: Sep 2002
Location: Arden, NC
Age: 39
Posts: 4,460
Trader Rating: (1)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 1 reviews
|
For me, I installed braces to get rid of squeaks and noises. lol It's worked so far and the driving feel (butt dyno) is better to me. I dunno about anyone else.
__________________
My 240 vBgarage |
![]() |
![]() |
![]() |
#22 |
Zilvia Member
![]() |
bump for the Autopower / Cusco safety question... The reason I ask is because I've searched the forum I've been getting mixed answers and it seems like people are saying that they both suck...
I was watching some old videos and I saw a s13 flip and pretty much flattened like a pancake ... it's got me all frazzled....
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
![]() |
![]() |
![]() |
#23 |
Nissanaholic!
![]() Join Date: Aug 2003
Location: Los Angeles/Berkeley, CA
Posts: 2,238
Trader Rating: (1)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 1 reviews
|
Cusco isn't SCCA legal, Autopower is. think about it
__________________
Petition Nissan to Make the IDx on http://IDxClub.co ! |
![]() |
![]() |
![]() |
#24 |
Zilvia FREAK!
![]() Join Date: Jul 2005
Location: earth
Age: 40
Posts: 1,406
Trader Rating: (2)
![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 2 reviews
|
I have a weld-in/bolt-in 6 point cage rdy to go in...(300 bucks shipped on eBay)
-it has the main hoop the harness bar across two bars going to the rear strut towers, two bars running right next to the seats going as far forward as they can. and a diagonal support bar that runs across the two rear bars. I know for a fact its going to stiffen the crap out the car. think of how many ways the car flexes and moves inside and out... Inside has absolutely nothing to prevent the cars "flex" (but that's the way cars are made, perfectly normal) by adding an internal structure, that's solid, will generate smaller movements of the cars body if not preventing it all. -another thing... i have a C piller bar and a front and rear strut tower bars. all ebay. by welding up the "joints" of these bars it made a noticeable differance... -i too, sware by the nismo power brace.. good quality piece.
__________________
|
![]() |
![]() |
![]() |
#25 | |
Zilvia Member
![]() |
Quote:
![]()
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
|
![]() |
![]() |
![]() |
#26 |
Zilvia Member
![]() |
not to bring this thread back from the dead, but I heard that bolt-on roll bar kits don't do much to stiffen up the chassis because they are linked to weak parts of the chassis. is this true? how else can I stiffen up the back, would it be viable to weld the roll bar plates?
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
![]() |
![]() |
![]() |
#28 | |
Zilvia Member
![]() |
Quote:
Cusco is made of Chrome-moly and Autopower is made of DOM..... "Chrome-Moly is stronger than DOM and DOM is stronger than ERW" says the IO Port site...
__________________
"Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD) |
|
![]() |
![]() |
![]() |
#29 |
Post Whore!
![]() |
Personally, I wouldnt get any bolt in cage.
Second, there is no way in hell I am running a cage on a street driven car!! The cage itself poses a safety issue if in an accident to occur on the street. Padding or not, if you hit your head on one of those bars, your certain to have a very serious concusion (thats unless you like wearing a helmet to the grocery store and back). Weld/bolt in roll bars on the other hand, is not such a bad idea for the street as pretty much it acts like rollover protection and the bars arent as intrusive. Think about function from the point of verts like the SLK, miata, etc. As far as bracing, it seems things like strut bars,c pillar bars, floor braces and the sorts dont have a real serious effect on handling. Feel, maybe, but I would prefer to spend my money on good tires, proper lightweight wheels and real damn good spring/damper combo and a real good alignment. But however, some braces like the tunnel brace and nismo power brace seems to have proven to yield acceptable results in chassis stiffening. If you want it done correctly, just weld various seems around the car. Thats probably your best (and in some cases cheaper) bet. Perfect example of this is comparing a regular Integra gsr to a type-r. The type r has various intricacies of chassis bracing in the rear and other parts as well as a more agressive damper setup and tires and it has to be one of the best front drive (if not overall) handlings cars still produced today (atleast, the DC chassis variants) |
![]() |
![]() |
![]() |
#30 | |
Nissanaholic!
![]() Join Date: Aug 2003
Location: Los Angeles/Berkeley, CA
Posts: 2,238
Trader Rating: (1)
![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Feedback Score: 1 reviews
|
Quote:
__________________
Petition Nissan to Make the IDx on http://IDxClub.co ! |
|
![]() |
![]() |
![]() |
Bookmarks |
|
|