Lightweight flywheel from a mpg standpoint - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Lazarey · 11-09-2010, 09:05 AM

Considering putting a lightweight flywheel on my strictly DD S14 when I put in a new clutch. I know it's odd but I actually enjoy tracking the gas mileage on it. Over 34 fill ups, I have averaged 28.7 mpg. I was wondering how a lightweight flywheel would affect that. On one hand, it would take less effort for the engine to spin up, but the rpms would fall faster which in my mind could make the engine have to use more gas to catch it before it stalls.

I know there are much smarter people than myself on here, so I thought I'd ask your opinions.

11-09-2010, 09:05 AM	#1
Lazarey Join Date: Jul 2010 Location: Texas Posts: 7 Trader Rating: (0) Feedback Score: 0 reviews	Lightweight flywheel from a mpg standpoint Considering putting a lightweight flywheel on my strictly DD S14 when I put in a new clutch. I know it's odd but I actually enjoy tracking the gas mileage on it. Over 34 fill ups, I have averaged 28.7 mpg. I was wondering how a lightweight flywheel would affect that. On one hand, it would take less effort for the engine to spin up, but the rpms would fall faster which in my mind could make the engine have to use more gas to catch it before it stalls. I know there are much smarter people than myself on here, so I thought I'd ask your opinions.