Not much affect at all, you need to blip the throttle to bump up the revs to downshift. Compression braking is not affected at all.

 

Thanks. Good to know. I'm all for them then.

 

I have plenty of experience lightening flywheels on sportscars, and I will tell you that flywheel weight makes a HUGE difference to how the vehicle drives on the street.

Number one thing you will notice with a heavier flywheel on the street is that the throttle response is slower. ie, blipping on downshifts takes a longer blip. Upshifting will be more bangy until you get the knack of matching revs better. Fuel economy isn't really affected, but THROTTLE RESPONSE is definately affected.

What Roger said about the benefits at lower rpms when 4wheeling. More smoothness. More ability to lug at lower rpms. Less stalling at low idle speeds. All good things.

 

Do you think the Centreforce FW at 6lbs heavier than stock is enough to make it worth while. The LCE is 12lbs heavier at 35lbs.

I've driven low displacement diesels and like how they drive. Didn't mind the slow reving, so I doubt I'll mind in the 4runner.

 

Well, I noticed a difference when I put one in my '85 (as noted in an earlier post). I have not tried out the LC part so can't tell what it is like.

 

I misread your post and I thought you said you had a 10lbs-added FW (33lbs). My mistake.