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HJ 61 and thoughts on power.

Discussion in '40- & 55-Series Tech' started by HJ61_Guy, Aug 3, 2003.

  1. HJ61_Guy

    HJ61_Guy

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    My name is Tom Bentzen and I live in the Seattle area. Ive got an '88 HJ-61 cruiser with a 12HT turbo diesel. I'd like to use it to tow my '88 Toyota 2L powered long wheelbase samurai. The samurai is built and weighs in at 4000 pounds. With a featherlite aluminum trailer were talking close to 5000 pounds total. Now the cruiser has 5.29 gears with ARBs running 37x12.5x17 MTR's. With that set up she's geared a little lower then normal for a bit more power. I'm wondering if there is anyone out there with 61 experience and whether you think she'll tow very well? Ive got a full floater rear end with disks too.

    On that note, the other reason for my post was whether anyone knows of anyway to get alittle more power out of her? I'll be adding a 3" exhaust and better air filter along with an ARB snorkle I bought. I was wondering about bigger turbos, bigger injectors, propane injection, etc etc etc.

    Any help would be appreciated.

    Thanks in advance,

    TB

    PS, Here is the samurai. Ill get the cruiser pic soon.
     
  2. roscoFJ73

    roscoFJ73

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    TB Where did you get the figure of 4000 lbs for your Suzuki?.Are you giving the curb weight or the gross vehicle weight? . The curb weight for these is only about 2200 lbs in an unmodified form which means you must have 1800lbs of extras if the 4000 lbs figure is correct.I have a FJ 73 which has a curb weight of 1860 kg or 4070lbs and I think your HJ 61 weighs a few hundred more than that. 80 series weigh about 4700lbs.
    As for your question re towing I have towed 4-5000 lbs of mini excavators/ bobcats with HJ 75 trays and they do it fairly easy,just dont use 5th gear or the heat will strip the chrome off the gear teeth.
     
  3. HJ61_Guy

    HJ61_Guy

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    Thanks. Yes I have added much to the vehicle. Here are the stats. They will help explain why she weighs in at 4000.

    TB
    Here are my '88 Long wheelbase samurai stats:

    1984 toyota 2.4 liter 2L diesel motor(AXT trubo in soon)
    1984 toyota 5 speed tranny, t-case with Marlin 4.70 low range gears
    1983 toyota front axle, 5.29 gears, ARB locker and high pinion 3rd member, Longfields, vented disks with four piston calipers
    1983 toyota rear axle, 5.29 gears, ARB locker, V6 3rd member, Front Range full floater, disk brakes with four piston calipers
    FJ80 master cylinder and power booster with pro valve
    Toyota IFS power steering
    Cross over steering
    Marlin 4.70-1 transfer case (98 to 1) with dual sticks
    Toyota leaf sprung over suspension
    42x15x15 swampers on Marsh racing 36 bead locked wheels
    FULL herculined tub and partial exterior
    Autometer gauges in the 5 vent holes
    Extrememaire compressor with 5 gallons of onboard air
    custom rear bumper, 5 gallon gas carrier, rear Ramsey 8000lb winch
    custom rocker skids
    Trail Tough front bumper with Ramsey 9500 Patriot winch and IPF lights
    6 point DaveSport full cage, and exo portions
    Corbeau sport seats
    Trail Tough fold down windshield
    cut door hinges for door removal
    soft top
    15.5 gallon gas tank
    TrailTough fender flares
    Centerforce dual friction clutch
    Amsoil bypass filter
    Flex-a-lite dual electric fans
    200 amp battery isolator
    One optima red top
    One optima yellow top
     
  4. HJ61_Guy

    HJ61_Guy

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    Thanks, I think I'll look into a custom intercooler.

    That and maybe an ATS, or Bully dog propane injection system.


    TB
     
  5. bjowett

    bjowett Supporting Vendor

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    More power is easy on a turbo diesel. A big fat intercooler, more boost, and as you mentioned, the large downpipe and exhaust. Keep the exhaust 3" all the way back, and use a good straight through muffler. Here is a teaser picture for you, it is the 3" 316 stainless sytem I just built for my 22RTE 4-Runner (gas turbo)
    [​IMG]
     
  6. bjowett

    bjowett Supporting Vendor

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    Oh yeah, try the above before you start swapping turbos, injectors, and propane! Also, get an exhaust temp. gauge.
     
  7. HJ61_Guy

    HJ61_Guy

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    Thanks. I figured a 3" exhaust. Pyro and turbo boost gauges.

    I wonder how easy it will be to up the boost on that factory turbo?

    i also dont know whether I can get a big down pipe. Might have to make one.


    TB
     
  8. Jonathan_Ferguson

    Jonathan_Ferguson ★ is in the wrong locale SILVER Star

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    More Fuel = More HP = More Heat
     
  9. bjowett

    bjowett Supporting Vendor

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    Actually, intercooling and turning up the boost on a diesel will make it run cooler... leaner may be better, to an extent. Just the opposite of a gas engine. The big exhaust and downpipe let the turbo move the exhaust heat out faster, which makes the job easier for it.
     
  10. cruiser_guy

    cruiser_guy

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    Check www.bellintercoolers.com for custom intercoolers. Get the wastegate signal to come from the intake manifold after you install the intercooler otherwise you're not measuring and responding to the true engine boost. Get a Isspro pyrometer and mount it in the exhaust manifold. When you go to 3" exhaust DO NOT use a muffler.
    I run a 3B with an AXT turbo out of Vancouver, B.C. and I do NOT use a muffler on my 2 1/2" pipe. I have no room for an intercooler.
    p.s. Don't think that a larger turbo will equal more power. You may want to reference a book called "Maximum Boost" by Corky Bell. It's geared to gas engines but it's good on turbo theory and applications.
     
  11. HJ61_Guy

    HJ61_Guy

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    Thank you very much for the help. I have a 2001 TDI jetta with a 2.5" exhaust and no muffler. I'll try that with the 3" im putting on the cruiser.


    TB
     
  12. zander

    zander

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    This Bell Intercooler site is a good find. I am about to drop in a 12HT myself and am looking itno this. Has anyone out there sized one for a 12ht in an HJ 60 and have any pointers?
     
  13. justdifferentials

    justdifferentials Gear & Axle parts for ALL Toyotas new or old... Supporting Vendor

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    suspension

    I would also be concerned with the handling characteristics due to ride height. I am not sure what you are running for suspension though.