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Eporsche69

09-07-2025 02:42 PM

Help! 911t 2.0 piston upgrade? Help!

Can I install 81mm, 2.0L Pistons and cylinders with Compression ratio is 9.5:1 with the 66mm crank on my stock 911t 2.0? Do I need to change the crank? Camshaft...i don't know what to do. My old pistons/ cylinders have broken parts.

Rosco_NZ

09-08-2025 10:45 AM

Your engine is a SS 2.0, 80x66 mm crank. Yes, 81mm and higher compression would be a nice upgrade. But keep an ear out for pinging, you might need to run better gas.

Eporsche69

09-08-2025 11:38 AM

So I don;t need to change the crank on my 911t 2.0? Is 91 octain gas ok?

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