Cooked my 351 - New engine/heads? - Reply to Topic
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Topic Review (Newest First)

  • 10-06-2016, 13:12
    NMNeil
    Be careful. Many of those fans have a left hand thread. Can't remember how many times a customer only found this out after he had trashed the water pump.
  • 10-06-2016, 07:49
    WillNash
    Whilst checking out my fan options I may have stumbled upon an important factor in my overheating, it looks like my engine is fitted with the wrong direction clutch fan, it spins counterclockwise but the pitch of the blades spinning that way blows air towards the rad... ridiculous I know & kind of annoying considering the consequences. I have ordered a new clutch and fan. Taking my engine out next week, I'll be in touch.
  • 09-06-2016, 18:07
    robo1
    This is how I see it, electric fans need relay`s, stats, wiring and fitting. All is well but that adds four elements all of which can fail or be problematic = another cooked engine unless you drive with one eye on the gauge. I have seen leccy stats fail, poorly fitted fans chaffe through rads, wiring rub out and fans pack up. Vs the one plain and simple mechanical fan which is more than adequate and in a lot of cases much better. The camper is a heavy old lump and already has a cooling system fit for purpose so why mess with it?

    Bob
  • 09-06-2016, 17:32
    blackpopracing
    Your alternator will cope but its a toss up for power loss either way as a 30A draw (probably nearer 22A) will add a fair load to the engine as well.
  • 09-06-2016, 11:04
    WillNash
    Hi Bob

    So the electric fan is not a magic fix, you're saying that drawing 30amps is going to cause problems for my stock alternator?

    Will
  • 08-06-2016, 16:19
    robo1
    I would stick with the mechanical fan and original shroud, its all designed to work in far higher temperatures than we have here without issues. If the rads good, all the collant pipes are sound and the fan is working properly all will be well. Leccy fans just dump another 30amps on the alternator when they are running .

    Bob
  • 08-06-2016, 15:17
    NMNeil
    Try for an adjustable controller to set the temperature that will turn it on, and if possible a manual override switch in case the controller quits.
  • 08-06-2016, 09:43
    blackpopracing
    Volvo 760 series fan - fantastic pulling power and 2 speed to boot. Very cheap from scrappys (get relay box to go with it if you want to use both speeds) and flat fixing flange all round makes it a snip to fit.
  • 08-06-2016, 06:13
    Mad Mark
    Quote Originally Posted by WillNash View Post
    Arranged to take out the engine next week to see what's what. The fan does spin freely, clutch is gone. After reading up on a few forums I'm thinking of replacing it with an electric fan at the same time as getting the engine sorted. Any tips on Electric Fans?
    Yes, the bigger the better! I used a Mr Gasket one from Real Steel and apart from a little cock up be the painter, it's been working great for 12 years!
  • 07-06-2016, 21:26
    mygasser
    i'm sure real steel did a crate 351w at good money. just swap your bits over and away you go.
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