• Welcome to the Contour Enthusiasts Group, the best resource for the Ford Contour and Mercury Mystique.

    You can register to join the community.

Piston Selection

The only way to know for sure is to install them. Make sure piston to valve clearance is double checked in both depth and radial. 4 mm is pretty high. Looks like more compression than 11 to 1.
 
I would agree that it looks a bit high. Definitely double, triple check your clearances.

Sent from my ADR6425LVW using Tapatalk
 
I would agree that it looks a bit high. Definitely double, triple check your clearances.

Sent from my ADR6425LVW using Tapatalk
Honestly, I think it will be fine. The stock piston has small valve reliefs in it. The sides of the dome are matched to that.
 
Back
Top