[Land-speed] dumb Question # 4856 - Wrist pins

[pookie @dslextreme.com]

On 11/23/11, Larry Mayfield <drmayf at mayfco.com> wrote:
> Ford uses a wrist pin diameter of 0.912 inches for the little end of the
> rod/piston.  GM has a wrist pin diameter of 0.927 inches. I see a number
> of  Ford products whether pistons or  rods offered with the option of
> using the GM wrist pin diameter.  I don't know if the Ford pin diameter
> is offered as an option for GM stuff though. Don't care, lol...
>
> What's up with that?  Is the GM pin lighter even though it is larger in
> diameter? Stronger for sure but is that the reason?
>
> So, the dumb question is:  "why switch from 0.912 to 0.927 inch diameter
> wrist pins?
>Hi Dr. Mayf, You might check to see the weight difference between the 2
pins.. Also if you are going to be forced induction or naturally asperated..If
the pistons are off the shelf items for N/A, some times in a blowen
application, piston failure is in the piston pin location..Piston to pin
clearence is also important in either application Mike R.
> Keep it technical please...
>
> mayf
>
> --
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