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Underbody Bracing
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jmakinen
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PostPosted: Mon Aug 29, 2011 7:09 pm    Post subject:  Underbody Bracing Reply with quote

I'm pretty certain nobody's done it on an Impala, I've searched, Googled, and checked about 50 pages of ClubGP. Can't seem to find anybody who's done it on a W-body, but I'm sure it's out there. That being said, what are your opinions? Every other vehicle forum that has an underbody brace kit for it's platform swears by it. Looking under my 9C1 shows adequate room for an easy system. Why not our cars? I think the main reason people complain about the w-body's handling (or lack thereof, depending on who you talk to) is because of unibody flex.
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Grape
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PostPosted: Mon Aug 29, 2011 7:59 pm    Post subject:   Reply with quote

I've only ever seen those kits offered for cars that people actually modify.
Most people dont usually consider a giant family sedan as a car they should modify. So, most companies wont worry with it. Just my 2 Cents


Although, that doesnt mean someone like ZZP couldnt make one.
I wouldnt buy one for the Imp, but I may decide to modify a MC eventually and would love if they had more suspension available for use.

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jmakinen
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PostPosted: Mon Aug 29, 2011 8:13 pm    Post subject:   Reply with quote

Grape wrote:
I've only ever seen those kits offered for cars that people actually modify.


Ouch... If that's the case, then I feel sorry for the forum where I originally saw an actual underbody brace kit offered:

http://www.teamswift.net/viewtopic.php?t=26610

Home of the Suzuki mini-compacts ! Your Home for all things Suzuki Swift, Geo Metro, Holden Barina, Chevy Sprint, Pontiac Firefly, and Suzuki Cultus. TeamSwift is a technical performance oriented community!

The day I get smoked by a Metro is the day my Impala gets drove into the ground...

But in all seriousness, I think this would be an excellent upgrade. I'm sure the folks at clubgp would eat up a zzp kit, as would most anybody in the w-body community looking for a more stable ride.
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chibiblacksheep
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PostPosted: Mon Aug 29, 2011 8:33 pm    Post subject:   Reply with quote

Grape wrote:
but I may decide to modify a MC eventually.


Good choice.

Wink

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IffyG
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PostPosted: Mon Aug 29, 2011 9:52 pm    Post subject:   Reply with quote

jmakinen wrote:

But in all seriousness, I think this would be an excellent upgrade. I'm sure the folks at clubgp would eat up a zzp kit, as would most anybody in the w-body community looking for a more stable ride.


I doubt it, maybe 8 years ago when the community was on fire. Unfortunately, these days people that get these cars tend to want to go "fast" in a straight line for cheap.

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jmakinen
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PostPosted: Mon Aug 29, 2011 10:38 pm    Post subject:   Reply with quote

IffyG wrote:
jmakinen wrote:

But in all seriousness, I think this would be an excellent upgrade. I'm sure the folks at clubgp would eat up a zzp kit, as would most anybody in the w-body community looking for a more stable ride.


I doubt it, maybe 8 years ago when the community was on fire. Unfortunately, these days people that get these cars tend to want to go "fast" in a straight line for cheap.


Straight line is fun, but I love the feeling of whipping around a corner, and losing people on the curves. Looking under my car, it looks pretty easy to fab something up. I might just try to throw something together, and post back some results.
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BlackVenom
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PostPosted: Tue Aug 30, 2011 12:54 pm    Post subject:   Reply with quote

I like to whip around turns and such.. i used to worry about losing my ass, but now my tires suck so much i'm driving like im in a family car.

jmakinen wrote:
I might just try to throw something together, and post back some results.


Do work!

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Albert2kls
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PostPosted: Tue Aug 30, 2011 3:06 pm    Post subject:   Reply with quote

I will watch this thread. I am curious to see what you come up with. Good luck.
There are some people that may be interested in a brace type setup. I would as long as it is not astronomicaly priced. I think a cross brace from front to rear to similar to a F-Body convertable would benifit these cars alot.
On the other hand its front wheel drive and I sure its not going to handle the real road corse type layouts. May be fun around town but that is about it I think, Just adding my 2 Cents

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billy101
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PostPosted: Tue Aug 30, 2011 3:12 pm    Post subject:   Reply with quote

I've just gotten used to realizing that these cars aren't made to corner really fast. I nearly went into a ditch because I was overconfident with my car, granted I'm at the tread bar on my tires, I now know to slow the hell down when needing to make a sharpish turn.

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PostPosted: Tue Aug 30, 2011 3:44 pm    Post subject:   Reply with quote

I have an H-Brace on the Subaru, and to be honest, it didn't make a huge difference (then again, I don't Auto-X it, and the WRX is pretty stiff already with the STI springs and how light the car is in comparison)

I think if there were a real benefit to chassis bracing, someone would have likely done it already given how old the platform is...

If you can figure out a cost effective way to do it without sending the porky Impala over the edge as far as weight goes, give it a try, but I think that the rear STB will deal with the majority of your body flex and any further bracing would likely give diminishing returns (especially for the weight gain)

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jmakinen
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PostPosted: Wed Aug 31, 2011 7:34 pm    Post subject:   Reply with quote

Just found a website with the underbody dimensions for our vehicles- http://www.mycertifiedservice......nsions.pdf

Going to check tomorrow to see if my car is flexed out an 1/8th inch or more. If it is, then one would assume it flexes more than that after a hard pothole/bump/obstruction, especially at highway speeds. If that's the case, fabbing will begin soon.

Quote:
There are some people that may be interested in a brace type setup. I would as long as it is not astronomicaly priced.


Right now, the plan I have will cost maybe $50 total, and use easy to obtain pieces. I'm sure I won't make a kit to sell, but I'll post up what I do, all the dimensions, and the design, along with pics of the final product and install. The way I'm envisioning it shouldn't take more than 6 hours of time between starting to fabricate, and bolting it in. But we'll see how that goes Very Happy
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Albert2kls
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PostPosted: Wed Aug 31, 2011 8:32 pm    Post subject:   Reply with quote

Also come up with a price to sell to me if all goes well Cool

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whitelightnin04MC
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PostPosted: Wed Aug 31, 2011 8:32 pm    Post subject:   Reply with quote

Care to provide a crude drawing of what you plan on connecting together? I'm going to try to not be pessimistic about the outcome. I just don't see how you can do much to improve the front end with the engine cradle acting as a big brace. And on the rear, you might be able to do something but I feel like you have to spare tire well in the way.

All of your effort will probably be for negligible gains and unwanted extra weight.

billy101 wrote:
I've just gotten used to realizing that these cars aren't made to corner really fast. I nearly went into a ditch because I was overconfident with my car, granted I'm at the tread bar on my tires, I now know to slow the hell down when needing to make a sharpish turn.


Smartest post in a long time. These cars don't make you feel very confident even with a fully modded suspension and decent tires.

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PostPosted: Wed Aug 31, 2011 8:57 pm    Post subject:   Reply with quote

whitelightnin04MC wrote:
These cars don't make you feel very confident even with a fully modded suspension and decent tires.


Ding ding ding... we have a winner.

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PostPosted: Thu Sep 01, 2011 6:04 pm    Post subject:   Reply with quote

Subframe connectors, K-members, X-bars, whatever you want to do it's all easy to do right if you know what you're doing and easy to do wrong if you don't. No matter how much bracing you put in it, no matter how much power your engine makes, and no matter how much you spend on tires and suspension, the car is still a fat pig. Like Rosie O'Donnel fat, after she eats Tipper Gore and wipes her mouth with Sinead O'Connor's panties.

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