Tim Hobbs wrote:
> On Mon, 6 Dec 2004 14:21:11 -0000, "Pacman" <[email protected]>
> wrote:
>
>>How heavy is a 2.25 petrol engine, and will this stand be suitable?
>>http://www.machinemart.co.uk/product.asp?p=020110455
>>
>>TIA,
>>Paul
>>
>
> I've heard several figures, ranging from 250 to 400 kg. It's big lump
> of cast iron, so the upper figure wouldn't surprise me. How much of
> the engine are we talking about? The block itself will be v. heavy,
> fully built up I'd say you could easily double it.
>
> A V8 block is very light - easily carried around by one guy. I'd
> guess at 30kg.
>
> Cast iron has specific mass approx 7.5 (ton / cubic metre). The
> figure for aluminium will be about 2.7 (it will vary depending on the
> actual alloy used). But as a rule of thumb it is fair to assume that
> the 2.25 will weigh at least double what the V8 does, even accounting
> for fewer pistons and valves...
>
>
>
>
I can't find a weight for any of the engines except for the 3.9 diesel
(Isuzu 4BD1) in my 110 which is 322kg dry. As this is nearly twice the
capacity of the 2.25 engine and is a much heavier duty diesel this suggests
the 2.25 petrol would be no more than 200kg.
I seem to remember reading somewhere that the 2.25 petrol was only slightly
heavier than the V8. Certainly the V8 block is lighter, but the other major
contributions to the weight are the crankshaft - probably heavier for the
V8, and flywheel - probably about the same for the V8, and the connecting
rods - probably about the same, but twice as many, the heads, lighter but
twice as many, manifolds, probably about the same, but twice as many for
the exhaust or twice the size and hence weight for the inlet. Starter and
alternator/generator are also heavy items but will be about the same for
the two engines. Camshaft and valve gear are not a big weight but will be
about the same, but probably a bit heavier for the V8 as there are twice as
many valves. Pistons are probably about the same, but again, twice as many
in the V8.
That's my two pence worth, anyway.
JD
