Space between piston and sliding bushing

[Geri]

Hello everybody!

Now i have a new question to the chevy community here. Hope you have some Advice for me :-)

I disassemble the motor from my 1953 3100 Chevy Truck. It is an 235 Chevy Inline 6 motor. The reason is, i get no compression on it. The grinding work on the cylinder head and the motorblock is now done. The next step is to replace the pistons because one of them has some deep drag marks :-(. I allready take a measuring instrument to get the diameter from the sliding bushing.

Now the question:

The diameter i get from the bushings is 91,6mm. The next smaler size of Piston and Piston Rings i can order from the trader is 91,5mm. So the space between is only 0,1mm!!!!

Is it to small or ok?

For an answer i allready looked in my workshop-manual. But i don´t get any minimum/maximum measurements.
Hope you get an answer for me.

Thanks a lot

Geri