Volkswagen D24 engine

Volkswagen D24 engine

Infobox Automobile engine


name = Volkswagen D24
Volkswagen D24T
aka =
manufacturer = Volkswagen Group
type = Inline 6 cylinder diesel engine
production =
predecessor =
successor =
bore = 75.5 mm
stroke = 86.4 mm
displacement = 2383 cc
length =
diameter =
width =
height =
weight =
block = cast iron
head =
valvetrain = SOHC
supercharger =
turbocharger =
fuelsystem = Distributor injector pump, indirect fuel injection
fueltype = Diesel
oilsystem = Wet sump
coolingsystem = Water cooled
power =
specpower =
torque =
compression = 22:1
fuelcon =
specfuelcon =
oilcon =
The Volkswagen D24 engine is a 2.4 litre (2383 cc) inline-6 cylinder, naturally aspirated, convert|60|kW|PS bhp|abbr=on|lk=on diesel engine, formerly manufactured by Volkswagen.

The engine is also available as D24T with a turbocharger taking power up to convert|105|bhp|kW PS|abbr=on and a turbo intercooled version D24TIC was also available further boosting power.

The D24 was also found in a number of Volvo Cars 200, 700 and 900 series models, coupled to Volvo M45 or M46 (overdrive) transmissions.

In service, the unit proved to be a somewhat mixed bag- some owners reporting excellent reliability and long engine lives, others complained of overheating, routine blowing of headgaskets, cylinder head cracks, premature wear of the bottom and top end, low oil pressure etc.A lot of this can be attributed to poor maintenance, the d24 was basically a vw 4 cylinder (a reliable engine) with 2 extra cylinders. For example, volvo stated that an oil change should be carried out every 3000 miles on their D24 740, using good quality oils and filters (to prevent oil starvation on start up, a known fault with the D24) in addition the use of a strong antifreeze/coolant mix was essential to keep the cooling system in order. If this strict maintenance regime was not adhered to, sludging of the engine could occur, leading to the very narrow cylinder cooling oilways clogging and premature camshaft/crank wear.A below par cooling system could also lead to overheating and especially with the higher stressed turbo engines, head gasket problems.It has to be said the D24 was NOT a low maintenance engine, in addition to the suprisingly frequent oil changes required, the camshaft drive belt also required changing at the recommended intervals which was a pretty involved job, not least because of poor access in the under-floor engined LT vans and the neccessity of special (and expensive)locking tools to carry out the replacement. The top end also featured adjustable tappets using the bucket and shim arrangement and required checking every 25000 miles, although later (1990>)models had hydraulic tappets.In short, unless you were prepared to pay main dealer or VW/volvo trained fitter costs or were capable yourself, the engine could prove to be troublesome.In many cases however, engines that have been looked after properly and treated with respect ( this engine is particularly sensitive to being thrashed from cold, it is important to go gently until warmed up and to avoid short journeys which will exacerbate rapid engine wear) have been known to clock up 2-300,000 miles without incident.

ee also

* list of discontinued Volkswagen Group diesel engines

References


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