[martynUK]

Hi Guys,
I was chatting to a buddy of mine who tells me the best way to get new piston rings to bed into freshly bored cylinders is allow a small amount of rust to form on the cylinder walls. When you fire the engine up for the first time this rust acts as an abrasive & helps bed in the rings??
I dont know if this is a recognised technique or whether he is winding me up?

Regards,
Martyn

 

[71hotrodpinto]

WHATTTT????
RUST??? im sorry but thats Hackyard techniuqe if ive ever heard it.
NO the best way is to have the bores honed with the proper grit depending on the rings you intend on using.
Chrome rings for example use around a 280 grit. ( old school, they take forever to seat.) cast iron rings i think is around a 320, and moly faced (factory style) is around 400 or finer.
These are not exacts but you get the picture.
If you need exacts then ask your reputable engine rebuilder
But intentionaly letting any rust inside an engine is moronic in my opinon.

 

[cmf60]

 

[ujt389]

in my experiance rust+internal engine parts=expensive repairs.

 

[thekingofazle]

lol.

I have a tip - sell your cars and buy yourself a nice cruise around the world.

Or, punch your "buddy" until he admits to pulling your leg.