Reply With QuoteNo it's all fine. Its actually the oil filtering centrifuge that you can hear spinning down. But yes, don't turn off when the engine has been working hard - notably in a servo off the highway. Let the turbo cool off.
Fossicker
After I turn the motor off on my 2000 TD5, there is a winding noise that sounds like it is winding down over a time period of about 15-20 seconds.
Should I be allowing the trurbo to cool before I switch off or is this noise normal.? It does happen even if the car has been driven slowly prior to switching off.
Swaggie
No it's all fine. Its actually the oil filtering centrifuge that you can hear spinning down. But yes, don't turn off when the engine has been working hard - notably in a servo off the highway. Let the turbo cool off.
Cheers
Slunnie
~ Discovery II Td5 ~ Discovery 3dr V8 ~ Series IIa 6cyl ute ~ Series II V8 ute ~
RoverLord
agreed, its when you cant hear that that you have to worry...
interestingly as it gets closer to service time it takes longer to spin down than when its new.
care to guess why?
Last edited by Blknight.aus; 4th January 2008 at 01:33 PM.
Dave
"In a Landrover the other vehicle is your crumple zone."
For spelling call Rogets, for mechanicing call me.
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TdiautoManual d1 (gave it to the Mupion)
Archaeoptersix 1990 6x6 dual cab(This things staying)
If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
If you think you're in front on the deal, pay it forwards.
Master
Supporterbecause of the weight of crap in it that gives it more momentum?Originally Posted by Blknight.aus
RoverLord
thats it, although it doesnt get more momentum (that'd mean its going faster) its got more inertia as it has more mass.
But I knew whatcha ment.
Dave
"In a Landrover the other vehicle is your crumple zone."
For spelling call Rogets, for mechanicing call me.
Fozzy, 2.25D SIII Ex DCA Ute
TdiautoManual d1 (gave it to the Mupion)
Archaeoptersix 1990 6x6 dual cab(This things staying)
If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
If you think you're in front on the deal, pay it forwards.
Master
SupporterI don't want to be a pedant, and I don't want to bite the hand that feeds me (coz I've got no doubt I'm going to be heavily dependent on Dave's advice for as long as I own my Td5), but isn't the formula for momentum = mass x velocity
Therefore, even if it doesn't spin faster, it will still have more momentum (or rotational energy) if the weight increases?
Then again, my Y12 Physics was about 20 years ago, so I'm quite possibly mistaken
ForumSage
SupporterMy Leaving Certificate Physics was close to 45 years ago, but from what I remember, most of what you are both saying is right.I don't want to be a pedant, and I don't want to bite the hand that feeds me (coz I've got no doubt I'm going to be heavily dependent on Dave's advice for as long as I own my Td5), but isn't the formula for momentum = mass x velocity
Therefore, even if it doesn't spin faster, it will still have more momentum (or rotational energy) if the weight increases?
Then again, my Y12 Physics was about 20 years ago, so I'm quite possibly mistaken
Inertia is the tendency of a body at rest to remain at rest and for a moving object to continue to move in that direction.
Momentum is mass x velocity.
A heavier object (eg a centrifugal filter full of gunk) wil have more momentum because of its greater mass and it will have greater inertia for exactly the same reason.
1973 Series III LWB 1983 - 2006
1998 300 Tdi Defender Trayback 2006 - often fitted with a Trayon slide-on camper.
Swaggie
When I cut open one of mine after 10K there was virtually nothing in it, so not much extra mass there! Maybe its got more to do with the oil being thinner due to being contaminated? Maybe the bronze bushes have less drag, havng had time to run-in? Just some other possibilities...
MY21.5 L405 D350 Vogue SE with 19s. Produce LLAMS for LR/RR, Jeep GC/Dodge Ram
VK2HFG and APRS W1 digi, RTK base station using LoRa
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