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RJ70 Build Thread.

Ben Aug 29, 2016

  1. Pat

    Pat Well-Known Member I am in new_zealand

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    Good going,Ben
     
  2. clivehorridge

    clivehorridge Well-Known Member Supporter Guru I am in romania

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    Brilliant Ben!

    Love the mountings, reminds me of the days fitting a V4 in place of a 1.3 in a Cortina moons ago! :lol:

    So what will you do about the reverse pitch on the cooling fan?
     
  3. Paddler Ed

    Paddler Ed Well-Known Member I am in australia

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    The blades grabbing the other way was what I spotted - the other thing I'd look at before you get too deep is a 10 blade fan from a 5L diesel instead of the x blade fan from a 2LT which is notorious for cooling problems.
     
  4. Ben

    Ben Well-Known Member Guru I am in australia

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    Thanks guys. :thumbup:

    Can you do me a favor and see which direction the fans on your 80 and 4-runner rotate please? :pray:

    I need to find a suitable Toyota fan with the correct direction to bolt to my center. The 2lt is a perfect fit but is obviously meant to rotate the other way and isnt ideal as Ed mentioned. :think:
     
  5. Paddler Ed

    Paddler Ed Well-Known Member I am in australia

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    I'll have a look tomorrow - I think it goes the same way as the crank does thinking about the belt routing.
     
  6. StarCruiser

    StarCruiser Well-Known Member Guru I am in uk

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    Electric fan Ben?
     
  7. Paddler Ed

    Paddler Ed Well-Known Member I am in australia

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    Right - this is a 1UZ fan belt routing - see how the fan hub is mounted to the outside of the belt:
    100_8752.jpg

    In contrast, the 3VZE (4Runner lump) runs like this:
    0900c15280060b1d.gif

    Which, installed is very much like the 5VZFE:
    hd-142661.png

    So, there's at least 2 options that won't work...

    I reckon an evening with Dr Google Image search and you'll get somewhere...
     
  8. Ben

    Ben Well-Known Member Guru I am in australia

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    Thanks for the suggestion but I want to stick with the viscous one if I can as IMHO there more reliable. :icon-biggrin:

    Thanks mate I will keep looking. :thumbup:
     
    Paddler Ed likes this.
  9. clivehorridge

    clivehorridge Well-Known Member Supporter Guru I am in romania

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    The 80 fan runs clockwise, the same as the engine, yours is obviously running "backwards" compared with the engine, hence the reversed pitch.

    I dunno what you can do about that if you want to keep the viscous. Maybe electric will be the only choice.
     
  10. Ben

    Ben Well-Known Member Guru I am in australia

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    Thanks mate. :thumbup:

    I wonder if I could re-route the belt to make that pulley the fan bolts to, spin the opposite direction. :think:
     
  11. Gary820

    Gary820 Well-Known Member I am in great_britain

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    Nice work with the mounts and sump
     
  12. StarCruiser

    StarCruiser Well-Known Member Guru I am in uk

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    The problem there may be that in doing so you lessen the contact the belt has on the driving/driven pulleys causing more point load and potential for slippage.

    I can imagine some electric fans can be troublesome, but many cars have them without trouble. You can even have a twin setup and the ability to run on after the engine is stopped and inhibit operation in water. Which I think is where my argument falls apart here. Water ingress would likely shorten the life of fans not designed to cope with it.
     
  13. clivehorridge

    clivehorridge Well-Known Member Supporter Guru I am in romania

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    Personally, I'd be looking to move the rad forward, and keep the stock fan, Ben.
     
  14. emrahdeniz

    emrahdeniz Active Member I am in turkey

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    Another great build ;)

    Happy that this time i can keep up the build updated. It took me ages to check all your LJ70 build :)
     
    Last edited: Jan 1, 2017
    Ben likes this.
  15. TonyP

    TonyP Super Moderator Supporter I am in uk

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    Can you not just flip the fan blade around, or am I missing something obvious?
     
  16. Julian T

    Julian T Well-Known Member

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    Same problem, just less efficient at moving air.
     
  17. StarCruiser

    StarCruiser Well-Known Member Guru I am in uk

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    :text-+1: That would seem to be the least tricky option. I did notice the engine seems to be at more of a downward angle than the radiator and hence closer at the bottom. The top may be tricky to move forward (body cross member, bonnet latch etc . It may be less tricky to angle the radiator slightly to be parallel to the fan.

    :think::techie-eureka: …?
     
    Last edited: Dec 31, 2016
  18. Ben

    Ben Well-Known Member Guru I am in australia

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    Thanks guys. :thumbup:

    Think I've cracked it! :dance:

    After much searching I realised that not that many vehicles run backwards fans. :doh:

    I did try turning the Lexus one around as Tony suggested but the fins are still going the wrong way and it wont bolt on that way round anyway. :doh:

    Then I discovered this thread:

    http://www.4wdaction.com.au/forum/viewtopic.php?f=22&t=136299&start=420

    In which the guy used a Holden Rodeo (pronounced Ro-day-o) and it bolts straight on and looks significantly thinner and has less off set! :think:

    A quick ebay search and I discovered my local scrap yard has one and its only 5 minutes from work, so I'm going to try and grab it tomorrow! :dance:

    I've been doing lots of work on the project this week and will try and get an update up soon. :icon-wink:

    I've also just spent $350 with Amayama.com buying most of the bits I need to complete the build. :icon-cool:

    I want to buy all the mandrel bends, tube and silencer for the exhaust system but cant decide between stainless or steel. I want to use stainless ideally, but the cost might be too much for my budget. :think:
     
  19. Paddler Ed

    Paddler Ed Well-Known Member I am in australia

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  20. Ben

    Ben Well-Known Member Guru I am in australia

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    Thanks Ed, but that place is really pricey! :doh:

    Almost twice the price of ebay. :thumbdown:
     
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