Corolla GT Coupe - Royalty Black

[isac]

(07-12-2017 01:00 AM)pack Wrote:  Just in case i have to push them 0,25

If you need to bore cylinder walls there isn't 0.25 available, you have push it to 0,50 for OEM pistons (#13103-16220).
If you choose to bore 0.25 you need aftermarket forged pistons set (with matching rings), they are high compression (TODA) and an aftermarket management system is the only way to handle that.

I thought you sold your 16v engine with management system because you didn't have the time to tune it and now you're planning to do the same "mistake".

There's a bunch of considerations to open/rebuild an engine and start throwing expensive parts to build more horsepower, sourcing parts and paying big money, how parts relates to each other, expertise and tools, bla bla... It surprise me you even think about it.

If I was you, I will face reality and keep it as much stock as possible, even if you have to re-bore to 0.50.

Quick math:
OEM pistons price from ebay, €44.27 x 4 + shipping (€39) + import tax (+/- 25%) = €270
Samq Piston ring set 81.5mm (+0.5) , €90 + shipping (€20) = €110

New gasket... or full gasket kit ~ +/- €100/270
Rebore to .50 - ~ +/- €150
Valve steam oil seals ...
Labore/assembly ...