volvo 850 engine data

[Valerio M]

Hi all,

I am a former 940 owner, now I'm looking for a new 850 sedan and i ran
across some engine data on wikipedia ( http://en.wikipedia.org/wiki/Volvo_850
).

There it says that the B5204 outputs its max power @6500 rpm. I am
wondering, isn't that a bit too much RPM?

Next, can anyone tell me how much would the fuel consumption be for
this engine? The 940 i owned was wonderful, but the fuel consumption
was really an issue (I could at the most economic do 7.5km per liter,
well it was LPG, but still a lot by me).

TIA,

Valerio

 

[Baz]

--

Hi all,

I am a former 940 owner, now I'm looking for a new 850 sedan and i ran
across some engine data on wikipedia ( http://en.wikipedia.org/wiki/Volvo_850
).

There it says that the B5204 outputs its max power @6500 rpm. I am
wondering, isn't that a bit too much RPM?

Next, can anyone tell me how much would the fuel consumption be for
this engine? The 940 i owned was wonderful, but the fuel consumption
was really an issue (I could at the most economic do 7.5km per liter,
well it was LPG, but still a lot by me).

TIA,

Valerio

Hi Valerio,

I have a '96 850, automatic transmission, with the B5252S engine (10valve
2435cc) and over the last 7 years (about 80,000km) I have averaged about
10.9 litres/100km, under all driving conditions, which translates to about
9.2 km per litre if I calculated properly. On a trip I can get 8.2
litres/100km. Pottering around town gives around 11-12 litres/100km. I
would expect the B5204S engine (20 valve 1984cc) to do slightly better.

The owners' manual (page 9:5) lists fuel consumptions for the B5204S engine
(under EEC gov agency lab tests) as 1) urban12.2 litres/100km (12.9 for
auto), 2) 56mph, 6.6 litres/100km (6.5 auto) and 3) 75mph, 8.4 litres/100km
(8.0 auto) - the auto giving lower consumption at highway speeds is not a
typo, by me anyway. Also the values for saloon and estate are equal.
Interestingly, my best fuel consumptions under real world driving has been
at 100-110kph - (about 60-70mph), and around 8.2 litres/100km which is about
what the manual claims.

Regarding the max power at 6500 rpm (105kW or 143hp), you don't actually
have to drive it at that rpm you know ) But my owners' manual (page 8:9)
states, for the B5204S engine that the highest permitted constant engine
speed is 6500 rpm, and the max permissable for brief periods only (while
accellerating) is 6800 rpm. So it must be ok.

But for a car which is approaching 10 years old or more (mine's 11), would
you treat it this way anyway?

One last thing, I run my car on 92 RON petrol, not the 95 RON recommended
and used in their tests. 91 RON in the minimum allowed in the manual.

regards
Barry

 

[James Sweet]

Regarding the max power at 6500 rpm (105kW or 143hp), you don't actually
have to drive it at that rpm you know ) But my owners' manual (page
8:9)
states, for the B5204S engine that the highest permitted constant engine
speed is 6500 rpm, and the max permissable for brief periods only (while
accellerating) is 6800 rpm. So it must be ok.

But for a car which is approaching 10 years old or more (mine's 11), would
you treat it this way anyway?

I've never had any problems winding my 20 year old 740T to the redline from
time to time, it's silky smooth. I figure with 290K mi on it everything is
nicely broken in

 

[Valerio M]

Baz,
Indeed. I was just wondering how come it outputs its max power at such
high rpm. I think (but i might recall wrong) that for the 940, it was
around 5400 rpm.

....And thanks for the fuel consumption data!!!


Merry Christmas to all!

Valerio

 

[James Sweet]

Baz,
Indeed. I was just wondering how come it outputs its max power at such
high rpm. I think (but i might recall wrong) that for the 940, it was
around 5400 rpm.

...And thanks for the fuel consumption data!!!

It's due to many factors, the 8 valve 4 cylinders are quite torquey at the
low end of the RPM band, the newer 5 cylinder engines are more powerful in
general, especially the 20 valve versions peak at a rather high RPM.