I just rented a compression tester from AutoZone and tested the compression of all four of the cylinders on my '95 Corolla with the 7A-FE. 291k miles. Doesn't burn much oil at all, can go a 3k mile oil change with no top offs to keep it full.
I tested the compression and it came out between 100 and 110 psi across all cylinders so no big difference. I will do it again tomorrow because that seems a little low to me for an engine that runs just fine and doesn't burn much oil.
My question is: what do you think would be a good psi number to have for such an engine at this age? I will do a wet and dry compression test tomorrow but just wanted your input on this.
Thank you and keep up the great work!