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@Mr B wrote:depends on exact use of car to extent but not really a huge benefit on an average more road orientated R, If current flywheel is good enough it can be skimmed & lightened slightly if wanted.
wouldn't lighten it very much though & same if buy one, don't go too light.
Standard flywheel is about 9kg, decent machineshop should get standard to low 7kg, If buying lightened I wouldn't go lighter than low 5kg.
like most things you gain & loose. With clutch engaged you have a lot of inertia through all the 4wd transmission & wheels. with clutch disengaged the engines inertia very much depends on the flywheel.
Certainly can make difference in way engine increases revs but can make car less smooth at low revs/ low revs & high gear.
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