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Thread: D2a Manual vs Auto

  1. #21
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    Quote Originally Posted by Fluids View Post
    Offroad with the sport mode engaged in low range, the auto works like a clutchless manual holding whatever gear you select.
    But Kev....

    How come the M lights up on the dash when you push the mode button in low range? Shouldn't it be S if it's sports mode?


  2. #22
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    The falcon 6sp is a completely different box. When I had mine rebuilt the guy who did it specialises in rebuilding the 6spds for street drag applications. We tried a mock up of it to the tfr and it's very different (but could be adapted) but it's wider and taller and all around a bigger job than either the cost of a well built (ashcroft or specialist) 4HP or possibly a toy auto from behind a 1/3UZ and matching tfr.

    That's be my ideal combo, built 3UZ and matching auto/tfr combo.

  3. #23
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    OK Mr Smarty pants ... posted edited to keep the hecklers in check !

    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

    2014 MUX LST with fruit
    2015 Kimberley Kamper "Classic"

  4. #24
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    The danger of the falcon box is the comp is inside the PLASTIC pan so some form of sump protection would be mandatory. The wiring is massive into it and getting it to talk to the LR ecu's....

  5. #25
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    Quote Originally Posted by SuperchargedSport View Post
    I think from memory boost isnt produced until something like 2500 or 2750rpm standard it will be from say 1500rpm with a vnt

    Standard turbo is producing boost from reasonably low rpm. It depends on the load. I had the nanocom hooked up this afternoon while running some errands and respecting the 50kph back streets limit I was seeing low level boost from 1200rpm. Obviously not huge amounts down low but around 6psi @1200rpm, and up to 16psi at 1800rpm.

    16psi is getting within a couple of psi of maximum standard boost, so these claims of no boost under 2000, 2500, or even 2750 rpm are waaaaaaay off the mark.

    cheers
    Paul

  6. #26
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    Hi Paul. I don't think it's a case of no boost nder certain rpm's, but more a case of the time it takes for the boost to develop under these rpm's.

    I get stuck part way up the back of a dune in the soft powdery sand. I've pretty much sunk close to the axles. I cannot proceed forward. In reverse with light throttle, thinking I can juts back down I also make no prgogress either .... so, I floor the pedal, the engine revs rise, and it appears nothings going to happen & I need to break out the shovel ... and then I reckon If I wait and count to 3 before all of a sudden there's a great burst of power and the D2 "pops" up out of the soft sand backwards ... this is from a standing / idle start.

    Obviuosly, driving with some anticipation in an auto, it's far easier to keep the turbo on the boil by using the slip in the TC to get the revs up higher and have the turbo already up to speed sooner than it would be under a light throttle ... and I'm referencing sand driving here .... a bit hard to do in a manual unless you fan the clutch.

    All that said, I don't find the lag to be an issue ... and the Td5 always seems to be producing plenty of boost at speed .... it's the lag between gas on and the boost rising that annoys some.
    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

    2014 MUX LST with fruit
    2015 Kimberley Kamper "Classic"

  7. #27
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    I understand where you are coming from but that is not what is being said. The claim is "no boost below xxxx rpm" not "it's a bit slow to come on".

  8. #28
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    Paul, I agree ... "no boost below xxxx rpm" is wrong afaik, like you have eluded to, and I believe people are using the wrong explanation because what they really mean is "it's a bit slow to come on". By the time they've put the boot in, the engine revs (auto) are up to 2500/2700 and then the turbo is singing (the slippery torque converter doesn't help either for the fact it doesn't hit it's stall speed until around 2700rpm) ... there's definitley a lag off the line. That's where the VNT makes a difference ... low engine speeds/off the line.

    My D2a with 255/70*16 ... 90kmhr / 2000rpm and the nancom shows 1.28bar (18.6psi) with the boot in going uphill with the TC locked .... no boost ? I think people are explaining it wrong. There's plenty of boost.
    Kev..

    Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green

    2014 MUX LST with fruit
    2015 Kimberley Kamper "Classic"

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