Fitting pistons

[Taz2204]

Morning,

I'm struggling to get the piston and rings back into the bore.

The bottom rail of the oil control ring keeps baulking/popping out between the ring compressor and and the block.

Rings and piston are new, all clearanced and gapped correctly. The bottom rail is so thin and the block has a very small chamfer/radius on the top of the bore making it more awkward

Is there a knack to it or a better ring compressor? Im using the steel sheet spring type with an allen key that closes the spring.

Thanks.
Mike

[Taz2204]

Ok, sorted it, was being too gentle with fitting it worried i'd break a ring. Just needed a bit more speed and force! My lack of experience

I don't like how much the Grant Expander needs to be compressed v the old ones i took off!

[richardthestag]

broken a few rings in my time fnarr, no but seriously cheapo piston ring compressor may not have a fine enough ratchet to squeeze the rings tight against the piston.

Since I threw all the branded but lower quality ring compressors in the bin and relied exclusively on a sykes pickavant jobby I have not had any issues

[Taz2204]

i think you are right, mine looks a bit worse for wear and cheapo too compared to the SP ones. Its fine for the top 2 rings, just the thin ones are hit and miss.