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Thread: Mazda B2500 Low power

  1. #11
    Join Date
    Mar 2013
    Location
    Sydney, NSW
    Posts
    213

    Re: Mazda B2500 Low power

    When you put the new turbo on, can I suggest a custom exhaust system like this?

    Click image for larger version. 

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    3DB
    1995 Holden (Isuzu) Rodeo 2.8TD 4X4 - B100 since April 2013
    1976 Mercedes 300D Turbo 'The Coal Grenade' - B100 since May 2016
    (@thirddegreeburns on Instagram)

  2. #12
    Join Date
    Sep 2009
    Location
    Brisbane (North Side)
    Posts
    707

    Re: Mazda B2500 Low power

    I reckon he would need to use a pretty full on windscreen additive to keep that sucker clear!!
    Regards,

    Cade.

    2002 100 series Landcruiser
    240,000 Km and counting on B100, 330,000km total on car.
    Naturally aspirated, Walbro Pusher pump just upstream of tank switch valves, Cav filter with reversed fuel flow direction.
    At 160,000 km Rebuilt pump, Reconditioned head and manifolds, glow plugs. Injectors all good after 160,000 km on B100.

  3. #13
    Join Date
    Sep 2009
    Location
    Brisbane (North Side)
    Posts
    707

    Re: Mazda B2500 Low power

    Update.

    Fixed. Thankgod.

    New turbo i think pushes pushes a lot more air than the old one. Initially little improvement on changing it. I then did a 'delete cat' mod which improved things a fair bit more. Final kicker was turning up the fuel in the low boost range by adjusting the boost compensator spring tension by a half turn down. My goodness now that really made it go. I didn't want to adjust the fuel screw as I don't have an EGT gauge fitted. Difference is phenomenal. Goes like a bullet.

    Synopsis: I think the pump is showing signs of wear. I will probably be up for a re build sometime soon as I really shouldn't have had to touch the boost compensator. Turbo was worn and the catalytic converter half clogged.

    Spent about $1000 turning it from an undriveable pile of poop to something that is a joy now.

    Thanks for for all of your input. Looks like it was a fuelling issue at heart but there were lots of bits that needed maintenance too.

    Time for a beer ����
    Last edited by Captaincademan; 20th February 2017 at 06:28 AM. Reason: typos
    Regards,

    Cade.

    2002 100 series Landcruiser
    240,000 Km and counting on B100, 330,000km total on car.
    Naturally aspirated, Walbro Pusher pump just upstream of tank switch valves, Cav filter with reversed fuel flow direction.
    At 160,000 km Rebuilt pump, Reconditioned head and manifolds, glow plugs. Injectors all good after 160,000 km on B100.

  4. #14
    Join Date
    Oct 2011
    Location
    Perth
    Posts
    133

    Re: Mazda B2500 Low power

    This is your lucky day. I have a BT50 and it had the exact same problem that you described.

    Take it to an exhaust place and get them to remove the catalytic converter. It doesn't have any electronics on it so it won't cause any problems.

    I got it done and hey presto - back to what it used to be before I started running BD in it. Actually it's even better...

  5. #15
    Join Date
    Sep 2009
    Location
    Brisbane (North Side)
    Posts
    707

    Re: Mazda B2500 Low power

    Hey Mark,

    Thanks but all ready done! Lump hammer and length of 1 inch pipe did the trick nicely. No need to spend coin. It took all of 30 mins. Not sure how much they charged but I hope you weren't ripped off!

    2 weeks in car is going great. Better than ever. Biggest improvement was more fuel during boost.
    Regards,

    Cade.

    2002 100 series Landcruiser
    240,000 Km and counting on B100, 330,000km total on car.
    Naturally aspirated, Walbro Pusher pump just upstream of tank switch valves, Cav filter with reversed fuel flow direction.
    At 160,000 km Rebuilt pump, Reconditioned head and manifolds, glow plugs. Injectors all good after 160,000 km on B100.

  6. #16
    Join Date
    Oct 2011
    Location
    Perth
    Posts
    133

    Re: Mazda B2500 Low power

    It only cost me $90 - but being a tightwad next time I'll resort to a pipe myself.....

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