[DeTomaso] (no subject)

[michael frazier]

I just put it in and crank away until one door pops open, then I back off 3/4 turn....
 
Actually it all depends on the condition of the individual car your dealing with.  I'd think you'd
want the distance between the shock tower/brace area to match the factory chassis build specs
while it's at rest.  Some cars have settled (collapsed?) more than others.  Raising the car with a 
floor jack at the lower rear cross member probably lets most cars relax back to near normal spacing.
Or not.  
A little preload never hurt anybody.

Michael Frazier
Gruppo Rompiculi Corsa 

 

> Date: Wed, 4 Apr 2012 14:07:21 -0400
> From: rob at dumoulins.net
> To: jb841 at cox.net
> CC: detomaso at realbig.com
> Subject: Re: [DeTomaso] (no subject)
> 
> I'm no expert, but it seems to me that the stress of attaching the
> cross-member in place with the car jacked up would be far less than the
> stress placed on that area during sport driving (in either case) if the
> cross-member truly does its job. Wouldn't it be more appropriate to
> consider which way the force gets applied to the car geometry and whether
> or not that force benefits or hurts nominal driving in each case?
> 
> On Wed, Apr 4, 2012 at 12:16 PM, John Buckman <jb841 at cox.net> wrote:
> 
> > > What's the advantage to setting up the brace with rear spread by the
> > > weight of the suspension, tires & wheels pulling down as opposed to
> > installing
> > > it with nothing attached at the pickup points, a more neutral state?
> >
> > With the brace loose or removed, the attach points will spread when the
> > car is raised (at the rear crossmember).
> > If the brace were to be installed with the car raised, then the brace will
> > become "active "when the car is lowered,
> > and it will remain active during virtually all conditions of driving
> > (until there is air under the rear tires). This puts
> > a continuous (and possibly excessive) load on those thin sheet metal
> > mounting tabs. The brace should be
> > installed with the car resting on the ground.
> >
> > The first time that the brace bolts were ever loosened on my car, the car
> > was at rest on the ground (garage floor)
> > and the mounts (tabs) did not move. The factory undercoating was still
> > covering the bolts, washers, and nuts.
> > This is not to say that the factory "setting" was correct or incorrect,
> > it's the way that my car originally was (and still is). Just an FYI.
> >
> > I just makes sense (at least to me) that the brace should be "inactive"
> > with the car at rest with its wheels on the
> > ground. The brace should not be used to "adjust" rear wheel camber.
> >
> > John
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> 
> 
> -- 
> Rob DuMoulin
> 904.476.8744
> rob at dumoulins.net
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