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Thread: Contemplating Cold-Air and Supercharging

  1. #1
    Join Date
    May 2008
    Location
    Sydney
    Posts
    66

    Contemplating Cold-Air and Supercharging

    Hi all.
    I've put about a thousand k's on the diesel cabriolet and so far i'm pretty happy with how it's running. It has plenty of go around town and is happy at freeway speeds with lower fuel consumption and my bet would be less emissions than a prius when i run biodiesel.

    The only time i'm really lack power is on steep hills when i havent built up speed before hand. It seems to be a bit out of the torque band and struggles to keep up.

    So i've had an idea. Put the intake manifold off the JH petrol engine on which removes the panel filter and gets the air intake away from the top of the engine. I could run a cold air intake down to beside the radiator, put a pod filter on and maybe even an electric supercharger. What are peoples thoughts. Will the JH manifold fit and what other issues am i likely to have?
    1991 Mk1 Diesel Cabriolet

  2. #2
    Join Date
    May 2005
    Location
    Gosford Central Coast NSW
    Posts
    4,386
    manifold will fit no probs, but be warned that there are .5mm holes in hte base of the intake for lubrication of the intake valve seats on the diesel which you dont get on the petrol, so by some miraculous act you might cause yourself a problem one day. i very much doubt it.

    anything you can do to give it more air will help. i dunno about the electric supercharger...no experience...

    a decent exhaust helps (but is loud on mk1 diesel, no turbo to quiet it down) 2" is good size.

    but yeah, lots of air will do a world of good.
    '07 Touareg V6 TDI with air suspension
    '98 Mk3 Cabriolet 2.0 8V
    '99 A4 Quattro 1.8T

  3. #3
    Join Date
    May 2005
    Location
    Sydney
    Posts
    852
    you could grab a cheap turbo and manifold and wack it on. couple of ppl have got the 1.9td setups for sale. unsure how you would account for that with the fueling. i think you can just wind the pump up cant you ?
    cheers brenton
    MK1 4door
    MK2VR6
    MK3VR6
    Transporter
    1st place, stock MK3VR6. Vw nationals 07
    2nd place, mod MK2VR6. Vw nationals 09
    and untold wrecks

  4. #4
    Join Date
    May 2005
    Location
    Gosford Central Coast NSW
    Posts
    4,386
    Quote Originally Posted by DVR68U View Post
    you could grab a cheap turbo and manifold and wack it on. couple of ppl have got the 1.9td setups for sale. unsure how you would account for that with the fueling. i think you can just wind the pump up cant you ?
    cheers brenton
    who have the 1.9 td setups for sale?
    '07 Touareg V6 TDI with air suspension
    '98 Mk3 Cabriolet 2.0 8V
    '99 A4 Quattro 1.8T

  5. #5
    Join Date
    May 2005
    Location
    Sydney
    Posts
    852
    i think beau and matt both have some manifold etc for sale. there is also a setup on ebay i think .
    cheers brenton
    MK1 4door
    MK2VR6
    MK3VR6
    Transporter
    1st place, stock MK3VR6. Vw nationals 07
    2nd place, mod MK2VR6. Vw nationals 09
    and untold wrecks

  6. #6
    Join Date
    May 2005
    Location
    Camden, Sydney
    Posts
    7,377
    Users Country Flag
    Yeah I have a TD manifold and turbo for sale off a TD, or TDI. Its a good turbo, pm me any offers if interested.
    Camden GTI Performance. VW / AUDI Specialists
    All Mechanical Work, Log book Servicing, New and used Parts and Imports
    19-20/6 Badgally Road, Campbelltown, 2560
    02 4627 3072 or 0423 051737 www.camdengti.com

  7. #7
    Join Date
    May 2005
    Location
    Sydney
    Posts
    852
    electric supercharger equals crap, its just like a heater fan lol, plus the added power will be offset the same or more on your poor little alternator dragging to provide the current.
    cheers brenton
    MK1 4door
    MK2VR6
    MK3VR6
    Transporter
    1st place, stock MK3VR6. Vw nationals 07
    2nd place, mod MK2VR6. Vw nationals 09
    and untold wrecks

  8. #8
    Join Date
    May 2006
    Location
    Maroubra NSW
    Posts
    299

    If we could put a turbo on the CK diesel, we would.. Fact is, the compression ratio of 23.5:1 is a bit high for us to be compressing the charge by any significant amount, and if you're only running 4 or 5 psi, then a turbo is an expensive piece of gear for that tiny amount of boost..

    So brom is on the right track: Make it breathe better, and you'll notice a difference. I'm not sure what an electric charger would do though..
    Peugeot 306 XTDT 1.9 Turbo Intercooled Diesel

    1976 LS parts vehicle

    Used to have: Mk1 Swallowtail LS DIESEL!

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