Just about to change the piston rings on my racing engine. It currently loses (blows by) about half a litre per race which I suspect is losing me some power.

I have a glaze breaker. How much glaze breaking should I do? What should the bores look like afterwards?

What 'bedding in' do the rings require?

Cheers

Mike

what engine is it?

prehistoric ones like pinto and crossflow are DIY hobs - either with honing stone tool or using 400 wet 'n' dry.

modern engines - zetec - are a mouch more precise two stage process.

you do the miniumum amount of honiing so the sruface is no longer shiny and you can see the hning marks.

you need to gap the rings.

as to running in - there are two theories - gentle or go ballistic - search here and the web.

Apparently going ballistic get the rings/bore matched up better then a gnetly running in process - since your engine if run in and loose, I would votefor t he balllistic method.


here is linky I referred to

need to read it myself to see if I remember it right ....

[Edited on 19/5/08 by 02GF74]

Thanks for that. It is a crossflow.