Thread: Liner question

Was this the ebay engine?.

Originally Posted by Vern

Was this the ebay engine?.

Yeah the stuffed truck engine is the one I picked up a few months back from ebay.

Steve

Short answer is no.

The liners are matched to the bores, four different grades. Looser isn't a huge problem; it just creates more noise and vibration. But tighter than intended could be catastrophic.

Aftermarket liners are really cheap, but are the loosest fit.

Thanks Dougal.

Just for my own understanding, am I correct to assume the fit of the liner controls the final bore ID, and therefore too tight a fit won't be enough piston clearance (hence your catastrophic comment)?
And following on from that, are the pistons matched to liners as a pair, or is it more a case of the pistons being kept relatively close tolerance and the liner fit chosen to end up with correct bore ID?

Basically looking along the lines of if you had a couple of engines with varying piston/liner issues, would it be possible to consolidate to one half decent one as long as you made sure you ended up with appropriate clearances?

Steve

Originally Posted by steveG

Thanks Dougal.

Just for my own understanding, am I correct to assume the fit of the liner controls the final bore ID, and therefore too tight a fit won't be enough piston clearance (hence your catastrophic comment)?
And following on from that, are the pistons matched to liners as a pair, or is it more a case of the pistons being kept relatively close tolerance and the liner fit chosen to end up with correct bore ID?

Basically looking along the lines of if you had a couple of engines with varying piston/liner issues, would it be possible to consolidate to one half decent one as long as you made sure you ended up with appropriate clearances?

Steve

I believe it's the second. Pistons and rings the same and the different liners take up the difference. But I won't know for certain until I rebuild my engine again or a new block for my engine.