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Thread: TD42 upgraded fan and hub assembly

  1. #31
    ......... MB's Avatar
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    Definitely worth a crack old mate, same as Mythbuster blokes start out their experiments, begin with a bog stock OEM base and work our way up as genuine usage needed
    In fairness to the subject, having owned quite a few 4.2 TD’s some donks all near bog stock do behave differently somehow?
    Maybe cavitation on castings possibly?
    Always thought that Mrs MB had the best donk in Mexico but now believing Hodgey mates is even sexier :-)


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    0-TJ-0 (8th February 2020)

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  4. #32
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    I did some googling after mudski suggested them and the Google experts reckon if you've got an overheating problem a high flow won't help it. High flow is good for low engine speeds.. i.e. rock crawling and hot rods in street cruises. Moves more coolant at slower speeds but won't really help the overall cooling capacity. Seems legit, I mean it makes sense to me anyway.

    Genuine normal flow may give a more balanced temp?
    2003 GU TD42 with a few extra ponies

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    MB (8th February 2020)

  6. #33
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    Quote Originally Posted by 0-TJ-0 View Post
    I did some googling after mudski suggested them and the Google experts reckon if you've got an overheating problem a high flow won't help it. High flow is good for low engine speeds.. i.e. rock crawling and hot rods in street cruises. Moves more coolant at slower speeds but won't really help the overall cooling capacity. Seems legit, I mean it makes sense to me anyway.

    Genuine normal flow may give a more balanced temp?
    This is exactly what Mark (JPC) told me when my car was there to get this fitted and cooling system serviced. If your TD42 will spend a lot of time being a highway car, you're wasting your $ with this (high flow) pump. Same goes if you already have a overheating issue on the td42. No amount of extra coolant flow will fix this.
    Coolant needs to spend a certain amount of time in the radiator, in order to "radiate" it's heat away... If you're sending coolant through the radiator million gallons an hour, it's pointless. Might as well cut the radiator out of the circuit.
    But sending MORE coolant at lower engine revs is where this pump may come into it's own. Low range work, etc...

    My personal experience, after the pump was fitted was not so much lower temps. It was how much faster the temps recovered after they got up a bit. For example pushing the car in low up a steep hill, and then stopping up the top. Factory pump temps used to linger in the hot range and slowly creep down. With the JPC pump, they went down much much faster.
    But as for LOWER temps overall, or fixing your overheating TD? Waste of time IMO.
    2005 TD42TI

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    0-TJ-0 (8th February 2020), MB (8th February 2020), Rossco (8th February 2020)

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