[Healeys] Flywheels

[Bob Spidell]

A while back I asked what was to be gained from lightening Healey flywheels. It didn't make sense to me, since a few pounds on the flywheel would have to be inconsequential compared to the 2,400 lbs or so the engine was being asked to motivate; i.e. the rotating mass of the flywheel didn't matter squat compared to the mass of the drivetrain and the car overall. 

Gary Andersen (our own 'editorgary') pointed out the main advantage was that the engine could free rev quicker, allowing for faster downshifts in races. Given the 'crashbox' personality of a stock Healey gearbox it didn't seem like there was much to be gained outside of racing, where either the gearboxes were modified or the driver was willing to tolerate crunching shifts for a few seconds off the clock. Plus, if your car is a street driver you'll spend lots of time idling in traffic and the heavier flywheel makes for a smoother, more consistent idle. 


Bob 



----- Original Message ----- 
From: WILLYS49 at aol.com 
To: jobu53 at hotmail.com, healeys at autox.team.net 
Sent: Tuesday, February 17, 2009 12:35:46 PM GMT -08:00 US/Canada Pacific 
Subject: [Healeys] Flywheels 

Dan, 
I recently wrestled with those same questions. I wanted to get the extra 
acceleration and sent my flywheel off to a recommended machine shop. The cost 
unexpectedly escalated when incidentals like polishing and balancing were suddenly 
added as "extras." Get the full package price! 
Was it worth it? In my case, probably not. I just wanted a reliable A-H that 
I can use on local paved roads. I used replacing my clutch as an opportunity 
(excuse) to spend the extra money. I really don't feel much added performance 
but never have a chance to drive it before clutch quit on me. I guess it 
depends on how you will use your Healey and how much $ is available. 
Just my thoughts. 
Thanks, Eric 


I