Reply With QuoteHBOriginally Posted by DiscoDiscoMan
AT RESTDon't know what you mean by Brrrshudder, but Jazzman had a harmonic balancer go and it would spin and clunk/shudder on shutdown.
Swaggie
HB
ForumSage
Viscous hub bearing ??
Master
SupporterMine has a whine and gets noisy after shutdown but I just open the passenger door and let the whine out
1960 series 2 143001010
1976 series 3 91331709c
06 discovery v6
2014 discovery tdv6
2010 cub supamatic drover
Master
Harmonic balancer....sigh!
AT RESTThought so, sadly a very common ailment of the D2Harmonic balancer....
ForumSage
SubscriberWhat kills them in the td5? Is it the vibration? Cheers
Swaggie
What a smooth running 5 cyl diesel do that
Moderator
From Wikipedia
A five-cylinder engine gets a power stroke every 144 degrees (720° ÷ 5 = 144°). Since due to camshaft timing each power stroke lasts approximately 120 degrees [ending when the exhaust valve opens], this means that there is a very short period of about 24 degrees when the crankshaft receives no torque. Because of uneven levels of torque during the expansion strokes divided among the five cylinders, there are increased second-order vibrations. At higher engine speeds, there is an uneven third-order vibration from the crankshaft which occurs every 144 degrees. Because the power strokes have less downtime, a five-cylinder engine may run more smoothly than a four-cylinder engine, but only at limited mid-range speeds where second and third-order vibrations are lower.[9]
A disadvantage of a straight-five over a*straight-six**engine is that a straight-five engine is not inherently balanced. Any even-firing straight-five design has free moments (vibrations) of the first and second order, while a straight-six, due to the 120 degree nature of the typical camshaft dictated power stroke, has zero or nearly zero free moments. This means that no additional balance shafts are needed in a straight-six. By comparison an*inline-four engine*has no free moments of the first or second order, but it does have a large free force of the second order which contributes to the vibration found in unbalanced straight-four designs.[10][11]
Fossicker
SupporterA quick trip to Brisbane and back this weekend (~1000kms total)
Daytime run there on Saturday but a late afternoon /night trip for the return leg.
Must have waved to at least 6 Deefers (both directions) but highlights were a D2 with LED headlights and full roof rack near the Big Orange (Crowley Vale) going the opposite direction and ‘chasing’ a grand child (D5) up the Range.
Later on in the dark, after the car 1km in front braked heavily, I also slowed down to see two cows at the side of the road. Doing my good deed for the day I chased them away from the road, across the road verge and into a clearing back towards the paddock...the joys of Land Rover ownership........rejoined the highway to nearly run over an ecidna but swerved in time to miss it.
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