[AT] Compression test on 7/8 inch plugs

[Brian VanDragt]

There were 1/2" pipe thread spark plugs (14 threads per inch), but what Dean has is 7/8"-18 straight machine threads, like an Autolite 3076 plug has.

Brian

> On 11/18/2020 3:46 PM Claude Kyker <claudekyker at gmail.com> wrote:
> 
>  
> Dean, if my memory serves me correctly seven eights inch is the same threads that’s on 1/2 inch pipe I assume your plug threads are tapered; pipe threads would be.  If that be the case you can make your own adapter using a half inch pipe. 
> 
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