[DeTomaso] Chassis

[cengles at cox.net]

Dear Stephen and Joe and John,


              I believe the best option is to install the Sphere 
Ball/Bar sway bar mounts available from  Pantera Performance Center, 
Pantera Parts Connection and other vendors.  It seems to be the best 
upgrade to slightly imperfect 1970-era engineering.


                      Warmest regards, Chuck Engles





On Sat, Aug 19, 2017 at 9:02 AM, Stephen Nelson wrote:

> Wow - that is a novel thought - leave suspension bolts looser than 
> spec'd by
> the manufacturer.  Wow.  If I were you I would talk to Dennis at 
> Pantera
> Performance.  And then I'd polish the inside of the A-arm ends where 
> the
> bushings are meant to rotate and tighten to design specs.
>
> Just my thoughts...
>
> Stephen
>
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On 
> Behalf
> Of Joseph F. Byrd, Jr.
> Sent: Saturday, August 19, 2017 6:01 AM
> To: detomaso at server.detomasolist.com
> Subject: Re: [DeTomaso] Chassis
>
> I should not question the design of others for a case where I have no
> experience, BUT my observation of a design that allows structural 
> members (
> the through bolt and side tabs) to have freedom would eventually allow 
> the
> bolt to "beat out" the hole in the tabs and "notch" the bolt shank.
>
> The use of a sleeve so the bolt can be securely tighten, allowing 
> rotation
> between sleeve/bushing AND limiting the amount of compression of the 
> bushing
> faces.   Even this improvement still uses a structural member (the 
> tabs) to
> be a wear surface.  Adding flange faces to the sleeves would then 
> contain
> all "wearing" to replaceable components.
>
> Joe
>
> -----Original Message-----
> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On 
> Behalf
> Of John McKee
> Sent: Saturday, August 19, 2017 1:51 AM
> To: 'Mike Drew'; 'Larry Weston'
> Cc: detomaso at server.detomasolist.com
> Subject: Re: [DeTomaso] Chassis
>
> I am not certain what the design intent of the stock rubber bushing 
> was but
> I think the poly bushings are intended to act like a thrust bearing if 
> I
> understand that term correctly. The suspension mounting tabs pinch 
> down on
> the radial end surface of the bushing something like an old time 
> friction
> shock. Yes the bushing could spin on the shaft but the main movement 
> or path
> of least resistance should be at the ends.
> I had Dick Drenske make me a set of bushings out of Delrin and he told 
> me to
> coat the ends with anti-seize as that was the surface you want to have
> moving.  Much like the shocks, you do not want to over tighten the 
> tabs so
> he had me use new nylock nuts and tighten to 20 ft.lbs. I also 
> polished the
> mounting tab surfaces smooth and gave them a light coat of sacrificial 
> paint
> to keep the rust off before adding a liberal amount of anti-seize.
> I have yet to complete my car and put any miles on them but I know he 
> had
> made Delrin bushings for his convertible Longchamp (beautiful car) and 
> he
> also put a set on the front end of Dawg's Phoenix.
>
> John
>
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