Re: Re: Installing Piston Sleeves (&Pistons)

OK, checked with the ‘experts’ (one of whom was actual in the process of building an engine) and unless your actual block has been skimmed there should be no need to machine the liners.

However the OP (tripyrenees ) says his block has been skimmed

The new liners should come with a paper gasket set that should, when fitted, leave the liner sitting at the correct height on a standard block. You can put a thin layer of a silicone type sealant on the gasket to ensure there are no leaks as the seat can be corroded if the old seals were leaking.

If the liners sit too low, so that the cylinder head doesn’t have the ability to clamp them down, Roger Williams used to produce different sized paper gaskets (thicker) to compensate.

If the block has been skimmed then you may have to either machine the liners, or the seats in the block to compensate. For future rebuilds it would seem preferable to machine the seats in the block so standard liners can be used again, plus it will leave a better surface for the paper gaskets to seal upon.

You can use a steel rule across the liner and feeler gauge to check the height of the liners, or, the way for those with years of experience, simply run your nail across and ‘feel’ the lip at the top when the liners are in :ugeek:

There should be no need to invest in any other technical equipment to measure the heights….

Hope this helps.