DMF to solid fly­wheel

Car Mechanics (UK) - - Help! -

The dual mass fly­wheel in my 2005 Ford Mon­deo 2.0-litre TDCI has started to get a bit noisy. I would love to have your opin­ion on whether to fit an­other DMF or the much cheaper solid fly­wheel. I seem to be get­ting equal ar­gu­ments for both. Are the hor­ror sto­ries of vi­bra­tion and en­gines be­ing de­stroyed by solid fly­wheels true? Ir­win Mcevoy The Va­leo con­ver­sion kit, which in­cludes the fly­wheel, clutch and con­cen­tric re­lease bear­ing, costs around £300, while the new DMF and clutch as­sem­bly with bear­ing costs around £360.

Va­leo has ob­vi­ously re­searched and tested the prod­uct be­fore bring­ing it onto the mar­ket and I am con­fi­dent they would not sell the con­ver­sion kit if they had any wor­ries that it would dam­age the en­gine.

I have read the same hor­ror sto­ries about crankshafts break­ing due to the fit­ting of a solid fly­wheel in place of a DMF, but have never come across this nor seen one that I could con­firm was af­fected in this way. I have re­placed DMFS with solid fly­wheel kits on many ve­hi­cles at the re­quest of own­ers who suf­fered from the DMF fail­ing at low mileages and have never had a prob­lem. Hav­ing said that, for the dif­fer­ence in price and for the re­as­sur­ance that en­gine vi­bra­tion will not de­velop and that the run­ning gear is fit­ted with the com­po­nents it was de­signed for, I would stick with a DMF on your Ford. While I have been happy to fit the solid fly­wheel in var­i­ous ve­hi­cles that have heavy usage, as your car has pre­sum­ably had no prob­lems over the past 13 years or so, I'd ex­pect a new DMF to give you a sim­i­lar length of ser­vice.

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