<VV> U-Joint bolt questions

[Dave Ziegler]

Grant, the larger bolts are 5/16 fine thread and the smaller bolts are 
1/4, most important is to use grade 8 bolts. 1965 used the smaller 
bolts and 1966 up to 1969 used the larger ones. Sounds like you have 
Mister Brutewrench mixing and matching parts. The larger wheels are not 
stock on Corvairs.

Dave.. .
On Jun 6, 2007, at 7:14 PM, Grant Young wrote:

> I am in the process of swapping a complete rear suspension between two 
> 1965 convertibles. One with all new bushings, shocks, and brakes out 
> of a rust bucket is replacing a badly worn set up in a otherwise very 
> nice car. But, I notice that the outer u-joints are secured to the 
> wheels of the cars with different size bolts. The donor car (with 13" 
> wheels) has longer, larger castle head style bolts and the receiving 
> car (with 14" wheels) has the smaller 1/4-20 bolts like on the inner 
> joints. Two questions then:
> 1. When was the change made and why would the smaller wheels have the 
> larger bolts?
> 2. What is the thread size on the larger bolts? I need to run a tap 
> through the threads in the wheel to clean up some corrosion and dirt 
> in them. (I know my thread gauge is right where I left it....?)
> Thanks for any insight on this trivial pursuit.
> Grant
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