Finally, my first 360 and goals for it! I'll be asking a lot of questions.

So today I had the time to learn how to use this tool and get measurements of cylinder 1. Will do the rest asap.

These two positions
View attachment 1715082788

Using these tools
View attachment 1715082789

These are the numbers I came up with on cylinder 1

Position 1 (top-bottom) .0023 - .0017
Position 2 (top-bottom) .0027 - .0013

This is not too bad if I understand correctly right?


Personally, I'd rather see the actual bore sizes than what you posted.

And if that is your actual numbers I'd never run that. Regardless of what the book says that's too loose at the top.

Also, measure down the bore in 3-4 spots instead of just two. Also measure front to rear on the bores as well. They can be 3rd and 4th order out of round and you may not catch it if you measure in two planes.

Also, unless you have a torque plate on, or a cylinder head on and you are checking from the bottom, that's not exactly what you have for taper.