[DeTomaso] Any experience with Marino's offset control arm bushings to increase caster?

[thomas]

Marino's bushings are offset both upper and lower, in opposite directions naturally.

What about shortening the upper A-arm and move the upper ball joint inwards to reduce the scrub radius?

Would this mess up the front end geometry?

Thomas

> 2 apr 2014 kl. 21:53 skrev jderyke at aol.com:
> 
>   With all the upper ball-joint shims on one side PLUS offset upper a-arm
>   bushings, the total negative caster will be around -4.6 or so degrees.
>   If you need more than that, also installing offset LOWER a-arm bushings
>   (offset the other way) adds another couple of negative degrees. Having
>   a machine shop mill about 0.080"-or-so off one side of the upper ball
>   joint carrier can add yet another degree (you'll then need a new 0.080"
>   thick shim). Once the bushings are in place, you can fine-tune the
>   caster setting by moving upper ball-joint shims around. But remember-
>   as caster goes up (negative), steering effort also goes up. Corvettes
>   and other high-speed sports cars run a maximum of -7 degrees caster,
>   but they also use power steering to lessen the resulting steering wheel
>   load.
>   Judy and I find that - 4.5 degrees is an excellent compromise in our
>   '72L with 245-50 front tires over the maximum stock setting of about
>   -2.6 degrees. And after everything is done, the front wheels will
>   definitely need to be re-aligned. While this is going on, check front
>   brake hose routing so no tire rubbing occurs, and that large tires do
>   not contact the right side wiper shield at full-lock.  I've had offset
>   upper bushings in place so long on our car, I can't remember how it
>   steered before.
> 
>   -----Original Message-----
>   From: Ken Green <kenn_green at yahoo.com>
>   To: cengles <cengles at cox.net>
>   Cc: detomaso <detomaso at poca.com>
>   Sent: Wed, Apr 2, 2014 12:30 pm
>   Subject: Re: [DeTomaso] Any experience with Marino's offset control arm
>   bushings to increase caster?
>   Chuck,
>       Marino said they only provide maybe one additional degree of
>   caster.  Did you do something more than just make one end thinner?
>   Seems like you can only get maybe 1/8 inch (1/4 inch total) of
>   shifting?  I'm not sure what the separation between ball joints is, but
>   that looks like less than 2 degrees of added caster?
>   Ken
>   From: "[1]cengles at cox.net" <[2]cengles at cox.net>
>   To: [3]kenn_green at yahoo.com
>   Cc: [4]detomaso at poca.com
>   Sent: Wednesday, April 2, 2014 11:33 AM
>   Subject: Re: [DeTomaso] Any experience with Marino's offset control arm
>   bushings to increase caster?
>     Dear Ken,
>                 1) no experience with Marino's offset bushings
>                 2)  The offset homemade bushings I have provide 5 degrees
>   of
>     positive caster with major improvement in handling and high speed
>     stability.  Highly recommended
>                 3)  Marino is a good guy and a reliable, reputable vendor
>     in my opinion.
>                                   Go buy'em,  Chuck Engles
>>     On Wed, Apr 2, 2014 at 1:12 PM, Ken Green wrote:
>> Can anyone comment of the benefitA and durability ofA Marino's
>   offset
>     front control armA bushings?A
>> 
>> Thanks,
>> 
>> Ken
>> 
>>     ------------------------------
>> 
>> _______________________________________________
>> 
>> Detomaso Forum Managed by POCA
>> 
>> DeTomaso mailing list
>> [1][5]DeTomaso at poca.com
>> [2][6]http://poca.com/mailman/listinfo/detomaso_poca.com
>   _______________________________________________
>   Detomaso Forum Managed by POCA
>   DeTomaso mailing list
>   [3][7]DeTomaso at poca.com
>   [4][8]http://poca.com/mailman/listinfo/detomaso_poca.com
> 
> References
> 
>   1. [9]mailto:DeTomaso at poca.com
>   2. [10]http://poca.com/mailman/listinfo/detomaso_poca.com
>   3. [11]mailto:DeTomaso at poca.com
>   4. [12]http://poca.com/mailman/listinfo/detomaso_poca.com
> 
> _______________________________________________
> 
> Detomaso Forum Managed by POCA
> 
> DeTomaso mailing list
> [13]DeTomaso at poca.com
> [14]http://poca.com/mailman/listinfo/detomaso_poca.com
> 
> References
> 
>   1. mailto:cengles at cox.net
>   2. mailto:cengles at cox.net
>   3. mailto:kenn_green at yahoo.com
>   4. mailto:detomaso at poca.com
>   5. mailto:DeTomaso at poca.com
>   6. http://poca.com/mailman/listinfo/detomaso_poca.com
>   7. mailto:DeTomaso at poca.com
>   8. http://poca.com/mailman/listinfo/detomaso_poca.com
>   9. mailto:DeTomaso at poca.com?
>  10. http://poca.com/mailman/listinfo/detomaso_poca.com
>  11. mailto:DeTomaso at poca.com?
>  12. http://poca.com/mailman/listinfo/detomaso_poca.com
>  13. mailto:DeTomaso at poca.com
>  14. http://poca.com/mailman/listinfo/detomaso_poca.com
> 
> 
> !DSPAM:533c6ad85441343511756!
> _______________________________________________
> 
> Detomaso Forum Managed by POCA
> 
> DeTomaso mailing list
> DeTomaso at poca.com
> http://poca.com/mailman/listinfo/detomaso_poca.com
> 
> 
> !DSPAM:533c6ad85441343511756!