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Borgwarner advise

Discussion in 'Turbo Tech Questions' started by Leighbammk2, Jan 29, 2017.

  1. Leighbammk2

    Joined:
    Jan 29, 2017
    Hi All new here looking for anyone with some advice about a rebuilt Midlands Turbo.
    I have had a look around the forums but not sure what I am looking for lol.

    I built a BAM engine and put it in a MK2 Golf Using a rebuilt Borgwarner K04/023 which was rebuilt by midland turbo they used their own housing and core.
    I have now had 3 turbos from them and all of them smoke on cold start up and idle but not on boost, in fact if I drive it hard including track use the turbo does not smoke but then leave it idling after 5 mins it starts to smoke again until used again and it stops.
    I am using Millers 10w50 Nanodrive I was wondering if the oil could be to thick for the Turbo when cold? or if any of you think fitting an oil restrictor would help as I don't run any oil restrictors.
    Any advice or pointers would be great as I normally run NA
    Many Thanks Leigh
     
    Leighbammk2, Jan 29, 2017
    #1

  2. 5.0thunder

    Joined:
    Jun 22, 2012
    I've seen turbos leak and smoke from too viscous of an oil before. I'd try a lower viscosity (when cold) oil and see if it helps before taking anything apart.
     
    5.0thunder, Jan 30, 2017
    #2
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