How To: Restore a Morris or keep fit

[Mike K]

I received an update from my engine man today, my CS8 engine block needs to be bored to +40 thou and I've only got the new +20 thou pistons . We discussed the options and I said I would have a look at another engine I have here , I removed it from a PU Morris , I will measure the bores for wear - hopefully it will be useable.

After all the effort of removing the studs and the work stripping it down, it was a wasted effort

At 300 bucks each I'm not buying new made in South Aust. JP brand pistons . My Morris friend in the UK has informed me the JP pistons are not up to standard anyway, he fitted them and after experiencing oil burning problems, he discovered the ring grooves have caused issues . JP overdid the ring groove taper , it should be .001" but on measuring, they are something like .010" .

The theory is: as the piston heats up the ring grooves change shape , ever so slightly . A tiny taper is made in the grooves to allow for the change.