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Thread: Turbo upgrade

  1. #1
    Join Date
    Jul 2018
    Location
    Australia
    Posts
    8

    Turbo upgrade

    Not sure this should be here or in the modified section.

    Finally getting around to doing a turbo upgrade on my 300Tdi! I thought of going the VGT type, but too easy and boring for myself.

    I have a Compound Bi Turbo set up from a Mercedes Sprinter that should make a difference.

    I have worked out the position for it, and have started on the new manifold flanges.
    Attached Images Attached Images

  2. #2
    Join Date
    Sep 2015
    Location
    In the shed or 1000km from home
    Posts
    414
    Nice!
    What's the advantage over the stock turbo? Faster spool up - more boost at lower RPM? More airflow in general?
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2 dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

  3. #3
    Join Date
    Jul 2018
    Location
    Australia
    Posts
    8
    It has 2 turbos, one small for low rpm boost, then the larger one takes over. No Lag at all when used on the Mercs, so should be the same with 300cc more capacity.

    They have an exhaust bypass/wastegate between the exhaust turbines, but both are always spinning. And a bypass valve in the boost side between them also.
    Seamless air delivery. I have made 2 dawes valves to control the vacuum actuators, and also have a boost pressure actuator from another turbo that i may try also to get the boost curve suitable.

  4. #4
    Join Date
    Jul 2018
    Location
    Australia
    Posts
    8
    Some progress pics.
    Attached Images Attached Images

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