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Thread: TB42 Turbo Project

  1. #1
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    TB42 Turbo Project

    Hi all,

    At the moment I am in the planning stages for the next stage of improvement for the old trol. As the title states, I am looking at turboing the ol' 42 to give her a bit more gusto. But I am going a little further than that and that is where I am running into the area of needing ideas/advice/guidance.

    The idea I'm having is taking the old TB42S running dual fuel and running 100% gas and turbo. My plan so far involves getting rid of all of the petrol gear including tank, lines, pump, carby and manifold. I have an idea to run a TD42 alternator with a vacuum pump to solve that issue, as well as using a TB42E intake manifold and throttle body.

    The questions I have for all of you people, full of wisdom, are:-
    -What sort of boost could I safely run on stock internals?
    -Would I be able to keep my gas mixer and adapt it onto the throttle body?
    -Would I be better off using a single injector for the gas?
    -If I were to use a single gas injector in the manifold, would I have to change my converter?
    -Is the TD42 alternator with vacuum pump the best option to handle my vacuum needs?

    Also, if anybody has done anything similar to this, I would really love to hear any problems you ran into while doing this and would also really like to see any photos of any of the things I'm looking at doing.

    Most of the work will be getting done by me, just gotta get the bike up and running so the patrol can be off the road for a couple of months while I get everything done.

    Thank you in advance

    Zak

  2. The Following User Says Thank You to zak308 For This Useful Post:

    Irish (21st August 2014)

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    Wouldnt mind doing the same to my swb

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    about 12psi is the limit of stock internals, you dont need a td42 alt as the engine doesnt see any boost when the throttle is closed so brakes still work fine.

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    I was more worried about the clutch booster getting vacuum.
    1989 GQ LWB Dual fuel (hopefully not for long) TB42S, 3in efi springs with 5in terrain tamer shocks, roo systems roof cage, custom front tube bar, 32in LED light bar, 285/75/16 federal m/t's, 16x8.5 Dynamic d-hole steel rims

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    You could always install a reserve vac cylinder if your truly worried.
    IF IT'S NOT A NISSAN.
    THEN IT'S A COMPROMISE

  8. #6
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    Yeah, I never really thought about that. Does anyone also know what sort of aftermarket parts are available for the tb42? Because I was hoping to build it up to be able to run 18-20 psi daily.
    1989 GQ LWB Dual fuel (hopefully not for long) TB42S, 3in efi springs with 5in terrain tamer shocks, roo systems roof cage, custom front tube bar, 32in LED light bar, 285/75/16 federal m/t's, 16x8.5 Dynamic d-hole steel rims

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    havent noticed my clutch being any harder since i turbo'd my tb42e but that said im only running 4-5psi so far

  10. #8
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    Yeah, I'm hoping to be pushing about 18-20 psi in the hope of reaching at least 250kw at the wheels.
    1989 GQ LWB Dual fuel (hopefully not for long) TB42S, 3in efi springs with 5in terrain tamer shocks, roo systems roof cage, custom front tube bar, 32in LED light bar, 285/75/16 federal m/t's, 16x8.5 Dynamic d-hole steel rims

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    if your after that sort of power drop in an ls1 and turbo that, would probly be cheaper and more reliable, any tb42 making that power will be very stressed

  12. #10
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    I really don't want to go v8. I've had an ls1 commodore before and the fuel consumption and rego costs are too high for me. Plus I would like to keep the tb42 so I don't really have to worry too much about a mod plate and all of that. I know I'll need a plate in the future, but it won't be as obvious if I get pulled over.
    1989 GQ LWB Dual fuel (hopefully not for long) TB42S, 3in efi springs with 5in terrain tamer shocks, roo systems roof cage, custom front tube bar, 32in LED light bar, 285/75/16 federal m/t's, 16x8.5 Dynamic d-hole steel rims

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