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Thread: 300tdi vs a td5?

  1. #61
    Join Date
    Nov 2012
    Location
    Acacia Ridge, QLD
    Posts
    566

    comfort zone

    Quote Originally Posted by manic View Post
    Speed limit is likely 110kph or less for those long drives through Canada. My TDIs love to cruise at 115kph on the GPS and have done for 100,000s of kms.

    Funny you mention 145kph in a tdi. I did the same in mine down hill 'passing a truck', except the TDI felt completly comfortable and at ease. This was with a fully loaded rack and the cargo area packed up to the rafters, heavily laden.

    The difference in confidence is probably down to the gearing and perhaps general condition of the car, suspension/bushes/steering ujs etc etc.

    If you are in a Defender screaming along at high revs, little to no sound proofing, driveline vibrating and steering wandering all over the place - YOU will limit your speed.

    A TDI powered defender in all round good shape and well set up by previous owner will drive better than a neglected TD5 powered defender. So see whats on the market, LHD/RHD, test drive a bunch. If you are lucky you will find a gem (TDI or TD5)

    Thanks Manic,
    its good to hear your real experience with giving the 300 tdi a "flogging" , and your confidence in the engine, Its very reassuring. ( are you still running standard gear ratios?)

    My car always steers well etc, and was heavily loaded at the time, I think they feel better on the road loaded than not. But I do recall when doing 145 k-h thinking it sounds very busy down there. about 3700 rpm I think.
    The defender transfer case gears don't help they are pretty noisy.

    I'm now running a disco-2 TC and its a lot quieter, when i first drove it I thought there was a window open, I could hear "wind noise". (I don't have any extra soundproofing)

    with my roof rack on at 110 km-h, (2400 rpm), I'm at 14-15 lbs boost and about 450-470 c egt, but the egt can climb up to 600 on the long hills, 650 C is my self imposed maximum, and i'll only sustain it for a short time. but notice the load goes up quickly over 100 k-h, as expected.

    There's no escaping the aerodynamics of the defender, and roof rack makes a noticeable increase in drag, compared to driving without it.
    Maybe I'm too gentle with mine,

    cheers simmo
    [SIGPIC][/SIGPIC]
    simmo
    95 300Tdi Defender wagon

  2. #62
    Join Date
    Jan 2010
    Location
    Melbourne
    Posts
    1,553
    Quote Originally Posted by simmo View Post
    Thanks Manic,
    its good to hear your real experience with giving the 300 tdi a "flogging" , and your confidence in the engine, Its very reassuring. ( are you still running standard gear ratios?)

    My car always steers well etc, and was heavily loaded at the time, I think they feel better on the road loaded than not. But I do recall when doing 145 k-h thinking it sounds very busy down there. about 3700 rpm I think.
    The defender transfer case gears don't help they are pretty noisy.

    I'm now running a disco-2 TC and its a lot quieter, when i first drove it I thought there was a window open, I could hear "wind noise". (I don't have any extra soundproofing)

    with my roof rack on at 110 km-h, (2400 rpm), I'm at 14-15 lbs boost and about 450-470 c egt, but the egt can climb up to 600 on the long hills, 650 C is my self imposed maximum, and i'll only sustain it for a short time. but notice the load goes up quickly over 100 k-h, as expected.

    There's no escaping the aerodynamics of the defender, and roof rack makes a noticeable increase in drag, compared to driving without it.
    Maybe I'm too gentle with mine,

    cheers simmo
    Quote Originally Posted by simmo View Post

    I'm now running a disco-2 TC and its a lot quieter, when i first drove it I thought there was a window open, I could hear "wind noise". (I don't have any extra soundproofing)

    with my roof rack on at 110 km-h, (2400 rpm), I'm at 14-15 lbs boost and about 450-470 c egt,
    Sounds like we have similar gearing. Im reving a little under yours on 33" tyres.

    I would get 145kph at around 3100rpm. Up hills Im fine holding 110kph in 4th , which is also ~3100rpm. I will rev the hell out of a TDI so long as the EGTs are safe. If 3000 rpm sounds like the engine is about to jump onto your lap, you probably dont have enough sound proofing!

    Standard gearing on a defender TDI or TD5 will see around 2800rpm at 110kph and 3650rpm at 145kph. Better ratios for hill starts and towing, but not a good song over 110kph.

  3. #63
    Join Date
    Jan 1970
    Location
    NSW far north coast
    Posts
    13,608
    Quote Originally Posted by manic View Post
    Speed limit is likely 110kph or less for those long drives through Canada. My TDIs love to cruise at 115kph on the GPS and have done for 100,000s of kms.

    Funny you mention 145kph in a tdi. I did the same in mine down hill 'passing a truck', except the TDI felt completly comfortable and at ease. This was with a fully loaded rack and the cargo area packed up to the rafters, heavily laden.

    The difference in confidence is probably down to the gearing and perhaps general condition of the car, suspension/bushes/steering ujs etc etc.

    If you are in a Defender screaming along at high revs, little to no sound proofing, driveline vibrating and steering wandering all over the place - YOU will limit your speed.

    A TDI powered defender in all round good shape and well set up by previous owner will drive better than a neglected TD5 powered defender. So see whats on the market, LHD/RHD, test drive a bunch. If you are lucky you will find a gem (TDI or TD5)
    Yes, my Tdi never felt stressed or like it was about to explode, it just revved cleanly to the limiter and went really well with the 255/85's and stock gearing suiting highway driving with loads. Towing was better with 235/85's though.
    Apparently 200Tdi's can feel a bit agricultural

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