5th gear mod on Fiats

Discussion in 'Fiat' started by TheTwoOfUs, May 31, 2011.

  1. TheTwoOfUs

    TheTwoOfUs Funster

    Joined:
    Jul 24, 2009
    Messages:
    2,554
    Likes Received:
    6,993
    Location:
    South Yorkshire
    While at Thetford I chatted to a couple of people who have had the 5th gear replaced with a taller gear to improve consumption. I was talking to my local Fiat dealer today who had never heard of doing this, so my questions are:-
    Is this a Fiat conversion or a third party mod?
    What happens if it is 3rd party and there is a costly gearbox failure?
    What was the cost of the conversion?
     
  2. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,498
    Likes Received:
    5,552
    Location:
    Mansfield,Notts
    Cost is round £300 +vat
    Only genuine parts are used we have done about half a dozen for folk on here and the dark side
    drops around 500-600 rmp for same road speed
    Geo
    ps as its only 5th gears set that is altered no one can be held responsable for any other gear or fault ocuring so only 5th gear set is warranted after conversion
    pps your right Fiat don't know what parts to supply you with
     
    Last edited: May 31, 2011
  3. TheTwoOfUs

    TheTwoOfUs Funster

    Joined:
    Jul 24, 2009
    Messages:
    2,554
    Likes Received:
    6,993
    Location:
    South Yorkshire
    How long do you need the van to do the mod Geo?
     
  4. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,498
    Likes Received:
    5,552
    Location:
    Mansfield,Notts
    Its only a couple of hrs job But we prefer you to leave van over night
    for the special Fiat selalent to set properly we have however sent em out same day if its a must, I know we could use ordinary silicone instant gasket but we dont, all Fiat parts and sealants as specified
    Geo
     
  5. haganap

    haganap Funster Life Member

    Joined:
    Dec 5, 2007
    Messages:
    11,065
    Likes Received:
    13,672
    Location:
    Heavan
    That's interesting Mr Geo. Is this something you have been keeping quiet?

    Have any of your customer's told you what the MPG gain was/is?
     
  6. Pat4Neil

    Pat4Neil Read Only Funster

    Joined:
    Sep 28, 2008
    Messages:
    1,382
    Likes Received:
    488
    Location:
    Essex
    Paul a friend of ours Dinger had it done recently and raves about the difference.
    I dont know what the fuel consumption change is though.

    Pat
     
  7. Geo

    Geo Trader - Funster

    Joined:
    Jul 29, 2007
    Messages:
    9,498
    Likes Received:
    5,552
    Location:
    Mansfield,Notts
     
  8. DINGER

    DINGER Funster

    Joined:
    Jan 14, 2009
    Messages:
    27
    Likes Received:
    4
    Location:
    Kent
    new 5th Gear

    It was I that has just had my 5 th gear done locally , and obtained the Fiat part numbers from Essanjay down in Poole Dorset. They knew straight away what was needed and was happy to pass the numbers on as it was not convenient or cost effective to make a 260 mile round trip to Dorset from kent.

    Geo was also very helpful when i posed my dilema so if you are nearer to him then his your man..:thumb:

    The differnce in the drive is much more relaxed motoring when pushing on at 65/68 mph it now pulls 2500revs instead of the screaming 3000 rpm.

    I,m still running on 15inch wheels so if they were replaced then no doubt the revs would drop a tad more.

    Just to add more confusion Hymer i,am informed, ship vans out with different final gearing so its a bit pot luck..:Eek!: Yes fuel consumtion has improved but my driving style does not make the best of it :Rofl1:

    Dinger
     
  9. TheTwoOfUs

    TheTwoOfUs Funster

    Joined:
    Jul 24, 2009
    Messages:
    2,554
    Likes Received:
    6,993
    Location:
    South Yorkshire
    I'm still mulling over whether to have it done or not. My concern is that as I tow a trailer which weighs the best part of a ton when loaded I might struggle to maintain 5th gear on inclines and therefore would be worse off with the fuel consumption.
     
  10. Theonlysue

    Theonlysue Funster Life Member

    Joined:
    Sep 14, 2009
    Messages:
    2,948
    Likes Received:
    2,815
    Location:
    Essex
    Fiat 5th gear mod

    Hi, had mune done a few weeks ago. Does 55 at 2000 revs, used to do 40 at 2000revs when cruising. So you get an decrease of fuel consumption of 15/40th's :Rofl1:

    Also had remapping done by wow, and the 2 together has made a great difference,

    S
     
  11. TheTwoOfUs

    TheTwoOfUs Funster

    Joined:
    Jul 24, 2009
    Messages:
    2,554
    Likes Received:
    6,993
    Location:
    South Yorkshire
    I have spoken with Geo and we are not sure if this mod will benefit me because of the way I use the motorhome. I nearly always tow the trailer with a gross weight of approx. 1 tonne. As a result I am not sure that the benefits that I would get through cruising at a steady 60mph on flat/downhill roads would not be offset by having to drop down one or more gears on inclines. Does anyone have experience of having their fifth gear modded and also towing a heavy trailer?
     
  12. Douglas

    Douglas Read Only Funster

    Joined:
    Aug 22, 2008
    Messages:
    2,837
    Likes Received:
    401
    Location:
    South Wales,
    When I first bought a fiat motorhome I asked about the failure of top gear on the engine, mainly because I had hear about it as being a common failure and I know of two friends that have had to have repairs done.

    In info that came back was that the top gear is at the physical top of the casing and at low revs/speed does not get enough oil thrown up to it and it was suggested that it was advised not to be in top gear at anything less that 40 MPH. Any comments.


    Doug...
     
Loading...

Share This Page