With all the discussion about the metric bolts for the upper control arms
on roadsters I think that none should be used. The bolts on the upper
control arm on roadsters have SAE threads and should be replaced with
fasteners using the same thread configuration.
Stan
=================
At 01:02 PM 5/26/99 -0700, Marc Sayer wrote:
>Philip Erickson wrote:
>>
>> Teddy
>> Hello from San Diego 70's (Burr) and clear
>> 8.8 are only SAE grade 5 bolts.
>> !!!!!! Use 10.9 bolts or SAE grade 8 for suspension !!!!!!!
>> I have seen that done on race cars to get full back caster with 2° camber.
>> I would use one regular and one lock nut on each bolt.
>
>WAIT! Grade 8 bolts are stronger in tension, but are more brittle than
>Grade 5 and are not as well suited to shear loading, especially single
>shear. If you want bolts that are better than stock, get a shanked bolt
>the correct length for your application in a grade designed for the
>loading the fastener will see. In many OEM suspension applications this
>is exactly what the manufacturer used. Grade 8 is not better suited for
>many of the automotive apps, such as some suspension applications. In
>fact in some applications the Grade 5 bolt is the better fastener.
>
>--
>Marc Sayer
>Editor/Publisher
>Z Car & Classic Datsun Magazine
>http://zcarmag.com
>Voice 541-726-6001
>Fax 541-746-0863/726-6001
>
>
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