13-04-2015, 04:00 PM
(This post was last modified: 13-04-2015, 04:02 PM by powerandtorque.)
For what it's worth, my HDi is running a standard GTi-6 flywheel which is lighter than the standard HDi one by a few kilograms, although I can't remember exactly how much.
No issues at all with idle hunting etc even after having disconnected the battery (so losing any learnt compensation values on the ECU). It has done best part of 20k miles with that flywheel now with (touch wood) no ill-effects.
Whether it'll cope with a flywheel a couple of kilos lighter again is another question, but I can't immediately see why it would be terrible unless there's another fault (like very tired injectors) that is masked by the flywheel inertia damping the individual firing pulses.
Worth pointing out though that the benefits of a lighter flywheel will be somewhat lost with long diesel gearing compared to a high revving petrol on a short box.
No issues at all with idle hunting etc even after having disconnected the battery (so losing any learnt compensation values on the ECU). It has done best part of 20k miles with that flywheel now with (touch wood) no ill-effects.
Whether it'll cope with a flywheel a couple of kilos lighter again is another question, but I can't immediately see why it would be terrible unless there's another fault (like very tired injectors) that is masked by the flywheel inertia damping the individual firing pulses.
Worth pointing out though that the benefits of a lighter flywheel will be somewhat lost with long diesel gearing compared to a high revving petrol on a short box.
1990 Peugeot 205 GTi 1.9 // 1991 Peugeot 205 GTi 1.9 16v // 1992 Peugeot 205 GTi 1.9 // 1999 Peugeot 306 HDi Estate