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Re: [6pack] Race Car Quandry

To: "Navarrette, Vance" <vance.navarrette@intel.com>
Subject: Re: [6pack] Race Car Quandry
From: Robert Lang <lang@isis.mit.edu>
Date: Wed, 13 Aug 2008 14:27:04 -0400 (EDT)
On Wed, 13 Aug 2008, Navarrette, Vance wrote:

>        RML:

Howdy.

>        Looks like there was a chipped edge on the casting, and the crack 
> proliferated from the chip. Could it be damage incurred on the race 
> track? Might be good to look for other chips and sand/polish them out of 
> the casting.

I have to be honest - I have no idea where the ding came from. I just 
haven't been watching that closely. That said, I don't recall that the 
crack was there in MAR when I installed the nylatron bushings.

A agree with the sand/polish thing. Maybe on the replacements.

:-)

>        This *IS* one of the places that the castings are known to crack, 
> however. What modifications have you made to the suspension? Coil over 
> shocks, sway bars, etc?

I know they break there and also where the shock mounts (behind the hub 
carrier). But this is not a radical suspension.

I have Triumphtune "Sprint" springs (roughly 600 lbs), with a spacer (the 
springs are REALLY short), rebuilt lever shocks (apple hydraulics HD), 
goodparts swaybar and goodparts nylatron and adjustable camber brackets. I 
ran the car through the entire suspension range checking for binding and 
there is none and the upper and lower bump stops function as designed 
except that upper bump rubber is re-shaped and the upper bump stop is 
moved up about 1/2"

It's not very radical... most of the lowering comes from tire profile 
(23x9x15 slix)!

>        Cheers,
>
>        Vance

regards,
rml
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