Ok, D Day is looming large & the car goes in for the engine swap on monday. Pretty much everything i need to get is now in my hands and i've started the build process.
The block has been to Stu and machined for the correct liner stand proud, as well as having the liners honed. As i'm fitting new rings, the honing process will ensure they bed in correctly.
So, tonights task is to ensure the new piston rings have the correct gap when they are fitted into the liners.
The piston ring has been inserted into its liner and pushed down with the piston to ensure its flat. The gap measured with a feeler guage, ring removed and filed in a vice until it was correct, taking material from both sides of the ring and ensuring that the two faces are flush when joined together. I've gapped the top compression ring at 0.3mm the 2nd compression ring at 0.44mm and the oil control at 0.3mm. Needless to say this is a PITA job
The rings are pretty stiff, and to avoid buckling them, they are installed with a piston ring expander doo dah...
Finished the first one!! 3 more to do now....