Piston Broke

[Dave R]

no stoneleigh for me....

number 1 piston

 

went and fetched a donor mondeo yesterday

[Bob Tucker]

Any idea how it happened Dave?

[Dave R]

not so sure... crown of piston is perfect.. plugs all look good

wasnt being hammered when it happened

engine was a complete unknown 4 years ago when it went in.. completely bog standard apart from inlet and exhaust (jenveys/ omex )

the bore is most likely recoverable after a hone,

once have done that may have to price up what can be done

[Mrbarry]

What pistons are they? Cast, forged etc?

[Longboarder]

After fixing it or sticking in a donor duratec I would have a good look for pre-ignition. You aint running high compression so I would think knock is likely to be the cause. So off to the rolling road.

 

Nigel

[Bob Tucker]

I've seen too many pistons knackered by knock i Agree with Nigel it has all the characteristics. Examine the plug from that cylinder using high power magnifying glass or best of all a jewellers loupe. Preignition deposits tiny glass like balls on the ceramic.

[Dave R]

My engine builder mate rekons the same..

The pistons in a duratec are nothing special... Forged are the way to go buy Burton's want silly money for them

[Dave R]

My engine builder mate rekons the same..

The pistons in a duratec are nothing special... Forged are the way to go buy Burton's want silly money for them

[Longboarder]

The pistons are good enough. No knock is the way to go!

 

Nigel