derodster Posted February 16, 2017 Share Posted February 16, 2017 Hello, Along with fitting a 200tdi recently to my '85 model 90 , I also had a transfer box change. Currently running a 43D (exTD5) 1.410 ratio To me it seems to be geared wrong ,and I feel engine is very revvy and really is only good for about 60mph, above this it just isn't comfortable This is fine tootling around the local lanes but it makes for noisy and not entirely comfortable driving on motorway Any advice as to a more suitable box / ratio ? Ta Rod Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted February 16, 2017 Share Posted February 16, 2017 What size tyres are you running? Quote Link to comment Share on other sites More sharing options...
bodumatau Posted February 16, 2017 Share Posted February 16, 2017 only 60 means you are in low range !! Quote Link to comment Share on other sites More sharing options...
Retroanaconda Posted February 16, 2017 Share Posted February 16, 2017 If you've no or limited soundproofing 60mph will sound very busy indeed. But without a rev counter it's hard to know what's actually going on. They're not geared for motorways as standard, you can mitigate to some extent by soundproofing but it will still be a Defender. As above tyre size will have an effect, it will be much nicer on 235/85/R16 or 7.50R16 tyres than 205R16. Quote Link to comment Share on other sites More sharing options...
dangerous doug Posted February 17, 2017 Share Posted February 17, 2017 I have a 1.2 disco box spare If you want to do a straight swap. It will get the revs down a little Quote Link to comment Share on other sites More sharing options...
bodumatau Posted February 17, 2017 Share Posted February 17, 2017 haha just saw now that Derodster said 60 MPH not KPH I assumed kph.......Low range might struggle to achieve 60 MPH Quote Link to comment Share on other sites More sharing options...
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