GR Yaris #GRsmol - Sydney, Australia 🇦🇺

I would assume overrev given the nature of the parts chosen for upgrade.

On a different note, Forged pistons aren't always ideal for a daily driver that might do many short trips. The piston to wall clearance has to be much larger than an OEM cast piston and as a result its often rattly and slappy untill totally warm.
 
Boosted8 said:
I would assume overrev given the nature of the parts chosen for upgrade.

On a different note, Forged pistons aren't always ideal for a daily driver that might do many short trips. The piston to wall clearance has to be much larger than an OEM cast piston and as a result its often rattly and slappy untill totally warm.
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Really, is that the case? Thinking of building my own engine.
 
2618 alloy used in high strength pistons expands a lot. I would prefer 4032 as they are a nice trade off being stronger than cast pistons (not as tough as 2618 ) but able to run similar clearances to stock. Less piston slap and oil consumption is the goal.
 
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