Alternator Drive Belt length query

Discussion in 'Honda N-Series' started by ibrardad, Tuesday 30th Jul, 2019.

  1. ibrardad Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ibby Accrington
    32
    9
    hi guys,

    was hoping someone would help me with working out what length driver belt i need as I've been told there are 2 sizes, im changing my alternator on my car and thought id do the belt at the same time aswell. the lengths are 2265 mm and 1785 mm please advise?

    Honda NN2A FR-V 2.2 diesel 2007 ES CDTI

    Many Thanks,

    Ibrar
     
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  2. Zebster H-Tune's Counsel The Evangelists

    Get the 1785mm (so a 7PK1785) and if it turns out you previously had the 2265mm belt then you need to simply perform the 'shorter belt mod' by rerouting the new belt and removing a now redundant idler. Early I-CDTI engines all had the longer belt but after about 2006 they all came with the shorter belt... this lessens the load on the alternator pulley to make it a little quieter and is kinder to the bearings.

    There's a forum guide... https://h-tune.co.uk/club/threads/i-ctdi-noise-from-alternator.116/live?page=1
     
    MattBeardless and ibrardad like this.
  3. ibrardad Club Member ★ ☆ ☆ ☆ ☆

    United Kingdom Ibby Accrington
    32
    9
    thanks Zebster, much appreciated
     
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