Author Topic: Quick query  (Read 699 times)


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Quick query
« on: February 28, 2022, 01:43:43 AM »
Hi Guys

I'm thinking that next time I'm up at the site where my Listers are I need to clean up the threads in the case where the four big cylinder/head studs go one one of my CSs

I'm just ratting through the box of taps & dies in my work truck - but I'm 400Ks away from the engine to check out thread and details - but I figure someone will know:

Are they 3/4 UNC?  And do the threaded stud holes go all the way through into the inside of the case (as in - do I need a bottoming tap?  or will any old tap do?)

Cheers, Mike