On all three of my engines which I have broken down, the same " thing" exists between all three:

The case cylinder registers are quite a bit larger that the cylinders themselves.

? Is this the " norm" for these motors.? Many moons ago when I was in type 1 land--all my engines were built up with very little tolerance from the cylinder sleeves and the case register bores. All my cylinders needed " some" force---very little tho.

With my heads off, I can move the cylinder bases up and down and side to side more than I like. I cannot measure--but my calibrated eyeball says somewhere between 1/16th and 1/8th of an inch. You can really see it from where the studs pass thru the cooling fins.

What is going on here?

I dont think that is right, when I did all of mine the cylinders were faily tight. No play at alll as a matter of fact. Jake will step in and tell you for sure though.

About .020 is normal...I'll check one right now if you like.

Cylinder 3.930...Case 3.950...So I guess I was pretty close

It does look real sloppy if your just using the Mk5 eyeball.

I just put mine in on the passenger side. Also seemed really sloppy but actually it was only about .020.

Thanks guys for chiming in!!!

I was getting really worried / upset there for a second.

So, I am guessing this is for expansion??

Thanks again!.....