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Thread: Ideas for improved economy from Holden 186 in SIII

  1. #21
    Join Date
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    Quote Originally Posted by UNDEROVER View Post
    I had a 186 in a 2A for twelve years which was used daily as a work truck towing a large trailer with scaffold etc, as well as being used to drag a 15ft tinny up the beach to Double Island point on a regular basis.
    Motor was 60 thou oversize, mild cam, bit of head work, extractors and a holley carb. After I went from one end of the vehicle to the other to take out any slop in the 30 year old drivetrain in the first year, I didn't break a single axle, diff etc for the next eleven, so strength is no issue in my book.
    An offset intermediate shaft and bigger high range gear in the transfer case kept the revs under control whilst on the highway and also maintaining original low range gearing for offroad.
    This certainly aided in keeping fuel usage acceptable as well as being particular with service intervals, tuning and overall maintenance of the vehicle including tyre pressures.
    It'll never match current day fuel figures, but by the same token I always enjoyed the power that was on tap when required, provided I had my wallet with me. A 45 litre tank doesn't go far when the secondaries of a holley are wide open!
    When you say you took out the slop in the drivetrain, did you remove all play in the driveshafts etc? How did you do this? I have some play ie I can turn the rear driveshaft a small amount with the handbrake off, is this the norm?

  2. #22
    Join Date
    Jul 2008
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    You might be able to track down the adjustable main jet you could get for the holden stromburg? I've seen a couple, years ago, looks a bit like a fuel tap that screws in where the main jet go's. Can go from no fuel at all to heaps.

  3. #23
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    Quote Originally Posted by BigJon View Post
    Series III with a V8 is Stage One. Different gearbox entirely. LT95, possibly the strongest ever factory fitted LR gearbox.
    I agree wholeheartedly Big Jon.The LT95 was the toughest box LR put out. I remember reading in a British magazine a few years ago,an interview with the designer.He thought that ,in hindsight,that the box was over engineered for it's intended purpose,the early RR.I once took one apart just to have a look and was very impressed with it.It's mated surfaces instead of gaskets is just one innovation.But with the transfer case attached it was one hell of a heavy box.
    John

  4. #24
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    Jul 2009
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    Deloraine Tasmania
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    186 economy

    I had a 186 in a 2A for years. Drove Melbourne to Darwin and back with an average of 14l/100km. Standard motor with 2" exhaust out the passenger side. Had the RR diff in the back, a locking one with the long bolt that screws in from the driver's side axle. Kept the standard diff in the front. I wouldn't recommend this, unless you want to end up with a short wheel base 2A!!.
    I also had an HR panel van with a 186 in it that returned 10l/100km. Bit more aerodynamic than a 2A though. That had extractors, 2" exhaust, mild cam and a 350 holley on an x2 manifold. I loved that car.

  5. #25
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    Jan 1970
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    I agree wholeheartedly Big Jon.The LT95 was the toughest box LR put out. I remember reading in a British magazine a few years ago,an interview with the designer.
    Yes that is true , but there is a different reason.
    The box was designed for the 101? Gun tractor espcially to provide a take off at same shaft speed to have a powered trailer/gun.
    LR did not have enough money to design another new transmission for the RR and the LT95 was used , also because they needed constant 4wd as they did not want to put a rear Salisbury in because its weight would have affected the ride.
    So the RRC was saddled with a truck box for 12or so years.
    BUT they are strong . I saw one about 20 years ago behind a 400 Chev for 10 years with no problems. Biggest problems are the intermediate shaft and the diff shims.
    Regards Philip A

  6. #26
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    Jul 2008
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    Just in case you wanted to know,Here's a photo of my old LT 95 out of a stage one v8, that thing hanging off the back is an overdrive. I loved that over drive! even as I have the higher ratio gears in my new LT, it's just not the same, it's the 5th I've always wanted. It will be getting a reco and back on. Oh, and just for the record, an LT 95 out of a Range Rover has a bout a 20mm shorter front output extention housing, I only found out when I went to bolt up the front tail shaft to my new one! Just a little $360 later, and the lengthed tail shaft fits nicely. They are huge, and would most likely take more effort and engineering to fit than it's worth.
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