Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - the flywheel test (switched to 2 kg / 4.4 lbs lighter flywheel)

pounsfos · 12-17-2010, 07:47 AM

ok so i have been reading this and that on flywheels and everyone has a different opinion. so i thought i would do some testing of my own

my starlet has the heaviest flywheel out of all the kp series engines so i thought i would try something lighter (theory being less rotational mass, less work)

so i sourced out a flywheel of the 1.1L motor which ways 2kg's less and installed it yesterday

so far i have noticed a throttle response increase and a quicker time to reach 58kph using 15inches of vacuum as usual.

my cars sweet spot is 55-60kph (about 32 -36mph) at this speed i can cruise using just above 20 inches of vacuum, with the lighter flywheel in it still uses the same but every now and again it drops down abit so have to give her about 22" of vacuum to keep her steady

i will post up results as they come. but its looking good i reckon

vacuum gauge is in inch hg if you must know.

12-17-2010, 07:47 AM	#1 (permalink)
pounsfos EcoModding Apprentice Join Date: Oct 2010 Location: New Zealand Posts: 119 Laura the Lancer - '81 Mitsibishi lancer LX Thanks: 0 Thanked 28 Times in 8 Posts	the flywheel test (switched to 2 kg / 4.4 lbs lighter flywheel) ok so i have been reading this and that on flywheels and everyone has a different opinion. so i thought i would do some testing of my own my starlet has the heaviest flywheel out of all the kp series engines so i thought i would try something lighter (theory being less rotational mass, less work) so i sourced out a flywheel of the 1.1L motor which ways 2kg's less and installed it yesterday so far i have noticed a throttle response increase and a quicker time to reach 58kph using 15inches of vacuum as usual. my cars sweet spot is 55-60kph (about 32 -36mph) at this speed i can cruise using just above 20 inches of vacuum, with the lighter flywheel in it still uses the same but every now and again it drops down abit so have to give her about 22" of vacuum to keep her steady i will post up results as they come. but its looking good i reckon vacuum gauge is in inch hg if you must know.