Compression ratio and tuning - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Nevyn04 · 12-13-2013, 01:45 PM

I have an '87 z31 turbo. Mostly stock aside from a turbo timer and manual boost controller. Looking to rebuild the engine, replace the timing chain, water pump, and all seals. Considering increasing compression while I'm at it with new pistons. Thinking 9.5:1 or 10:1. After a compression increase should I have the ecu tuned or will adjusting timing be enough? Sorry if it's a dumb question. I'm fairly certain it needs to be tuned. If so I'll hold off until I can put a Nistune in. Any replies are greatly appreciated.

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12-13-2013, 01:45 PM	#1
Nevyn04 Join Date: Aug 2013 Location: Florida Age: 37 Posts: 16 Trader Rating: (0) Feedback Score: 0 reviews	Compression ratio and tuning I have an '87 z31 turbo. Mostly stock aside from a turbo timer and manual boost controller. Looking to rebuild the engine, replace the timing chain, water pump, and all seals. Considering increasing compression while I'm at it with new pistons. Thinking 9.5:1 or 10:1. After a compression increase should I have the ecu tuned or will adjusting timing be enough? Sorry if it's a dumb question. I'm fairly certain it needs to be tuned. If so I'll hold off until I can put a Nistune in. Any replies are greatly appreciated. Sent from my SPH-D710 using Tapatalk

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