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Thread: viscous fan

  1. 22nd December 2013, 09:47 PM #1
    mattmac
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    viscous fan

    I was wondering why the isuzu 4bd1 isn't fitted with a viscous fan- seems silly to be a running a fan constantly if not needed and sucking power and economy. anyone fitted a viscous fan and noticed any improvements in power and economy?
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  2. 23rd December 2013, 05:53 AM #2
    Dougal
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    Truck engines are viscous fan. Price on them is horrendous.

    I went to electrics and vibration was noticeably reduced.
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  3. 23rd December 2013, 08:17 AM #3
    mattmac
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    I'm surprised a viscous fan would be that expensive- did you notice power/economy improvement with electric fan.
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  4. 23rd December 2013, 05:45 PM #4
    Dougal
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    Quote Originally Posted by mattmac View Post
    I'm surprised a viscous fan would be that expensive- did you notice power/economy improvement with electric fan.
    This was ~10 years ago and they wanted $700. I think my viscous unit was fine anyway but I wanted to go electric.
    No noticable power/economy improvement for me, but because my viscous was working this would be expected. Mainly vibration reduction, noise wasn't big as at higher rpm the engine drowns out the fan.
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  5. 24th December 2013, 09:59 AM #5
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    steveG
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    I've seen a few 4bd2 viscous couplings on ebay from the states - AUD$150-200 delivered. Anyone know if they would fit?

    Good chance a bare fan (without the viscous) could be had from a wrecker here for not too much.

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
    1988 120 with rust and potential
    1999 300tdi 130 single cab - "stock as bro"
    2003 D2a Td5 - the boss's daily drive
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  6. 24th December 2013, 11:04 AM #6
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    rar110
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    I'm pretty sure Bearman has one fitted.
    L322 tdv8 poverty pack - wow
    Perentie 110 wagon ARN 49-107 (probably selling) turbo, p/steer, RFSV front axle/trutrack, HF, gullwing windows, double jerrys etc.
    Perentie 110 wagon ARN 48-699 another project
    Track Trailer ARN 200-117
    REMLR # 137
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  7. 24th December 2013, 11:20 AM #7
    C H T
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    I bought a genuine Isuszu viscous to suit my factory trubo 4BD1T for around $300.00 -

    C H T
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  8. 15th January 2014, 10:30 PM #8
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    County3.9
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    Quote Originally Posted by C H T View Post
    I bought a genuine Isuszu viscous to suit my factory trubo 4BD1T for around $300.00 -

    C H T
    Did it make any difference?
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