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Thread: Moving radiator back?

  1. #1
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    Moving radiator back?

    Hi Guys,

    I'm thinking of moving my radiator back a bit to make room for an intercooler.. probably about 60mm.

    How close can I put it to the engine fan?

    I have heard stories of fans bending forward and digging holes in radiators during river crossings.. would this happen on the 4BD1?

    Thanks
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)

  2. #2
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    A spud bag (or radiator shroud) over the grille stops the fan de-coring the the rad.

    A viscous fan clutch would prevent the problem too.

  3. #3
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    I removed the fan and replaced with a large thermo fan that I grafted into the fan shroud this was not to gain room though I am running a 3" thick intercooler...I have found the thermo very good and if water appears its as simple as flicking a switch ..

  4. #4
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    Quote Originally Posted by c.h.i.e.f
    I removed the fan and replaced with a large thermo fan that I grafted into the fan shroud this was not to gain room though I am running a 3" thick intercooler...I have found the thermo very good and if water appears its as simple as flicking a switch ..
    Thanks. Is it thermostat controlled or just on / off via the switch?
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)

  5. #5
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    Like most things ATM that also is under re-designing as I only had it hooked upto a toggle but no matter how much I tell myself to remember to turn it on I always forget but only time the motor will get hot is after extended periods at idle...I rarely have it on whilst driving as it is not needed unless i am giving it a boot full and then my concern is egts anyways and in winter I do not use it so that motor heats up as quickly as possible...
    I looked at the generic thermo stats that get mounted in the radiator hose but thought I would aim at getting one that will fit in the thermostat housing as I no longer have heater hoses...

  6. #6
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    My mounting of the intercooler is not as pretty as some but that's partialy to do with it being the same size as the distance between the guards so I had some chopping to do!!

    This is from awhile ago which I have now tidied it up a tad


    Note: once headlight surrounds are put back on the holes are covered from view...

  7. #7
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    Wow thats massive. I think im going to W2A which will make it easier. The heat exchanger is 550x350x50 so much easier to handle.
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)

  8. #8
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    Quote Originally Posted by flagg View Post
    Wow thats massive. I think im going to W2A which will make it easier. The heat exchanger is 550x350x50 so much easier to handle.
    Mmmm sounds like a better option...may I ask what brand of system you were planing on running ?

  9. #9
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    Plazmaman, the "800HP" unit.

    They are expensive, but:
    They do a lot of R&D, not just send other peoples work to China to have copied.
    They have fantastic customer support, and a well respected quality product that is made in Australia.

    I was going to tig up one myself but when I spoke to these guys I changed my mind.
    Hercules: 1986 110 Isuzu 3.9 (4BD1-T)
    Brutus: 1969 109 ExMil 2a FFT (loved and lost)

  10. #10
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    Sounds like they would be good gear...I will probably consider one in the near future as the one I am running is a cheapie and probably is not the best for efficiency..

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