2002 V70 auto with 5244s engine - low rpm's

[Christerart]

Just picked up a 2002 V70, Auto with the 5244s (no turbo 170 hp) engine, 141K miles and a year MOT.

The car runs fine, auto is silky smooth and engine seems to be just fine - having loads of power.

However, already having a late 2000 V70 auto (2nd gen) V70 with the 140 version I am confounded with this engine and how low revving it is.

The rev counter is red lined at 4,500 rpm and it idles rock steady at 500 rpm (the 140 does that at 900) - and it goes down the road doing 55 at 1,100 rpm. Very different from the 140 Hp one.

Is this normal? Not come across this on any of my friends V70'se and I've not been able to find anything on the web about a 4,500 redlined Volvo engine..=*^)

I'm not complaining - just confused.

[Christerart]

So far 54 views to my post and no comments at all...

Is it because my post is silly or?...

[savabill]

You could get more comments if your post was a bit clearer. Is it your 140 or 170, that has you confounded with the low revving, or your 170? Its unclear which car you want comments on.

[Christerart]

Originally Posted by savabill

You could get more comments if your post was a bit clearer. Is it your 140 or 170, that has you confounded with the low revving, or your 170? Its unclear which car you want comments on.

"Just picked up a 2002 V70, Auto with the 5244s (no turbo 170 hp) engine, 141K miles and a year MOT.

The car runs fine, auto is silky smooth and engine seems to be just fine - having loads of power.

However, already having a late 2000 V70 auto (2nd gen) V70 with the 140 version I am confounded with this engine and how low revving it is."


OK, let' see if I can clarify:

I just bought a no turbo 170 hp auto".

I am confounded/confused with this engine in that it is very low revving - and according to the rev counter in the instrument cluster, it is red lined at 4,500 RPM.


This is compared to the 140 hp V70 I already own and which happily revs to 6,000 - and according to the rev counter in the instrument cluster in that car - again I'm talking about the 140 HP version - is the limit for that engine.


So what I just bought is a 170 HP V70 that is redlined at 4,500 and goes down the road at very low revs compared to the 140 HP auto V70 I already own.

No where can I find anything about Volvo using a 4,500 redlined naturally aspirated 170 HP version of the 5244S engine (the sticker on the cam cover states it is a 5244S) - and this is why I am confused.

Is there anyone who knows anything about a 5244S naturally aspirated 170 HP Volvo engine that is redlined at 4,500 RPM's?

According to this page:

https://en.wikipedia.org/wiki/Volvo_V70

2.4 B5244S[62] 2003–2007 170 PS (125 kW; 168 hp) 225 N·m (166 lb·ft) @4500 2,435 cc (148.6 in3) Inline 5


"225 N·m (166 lb·ft) @4500 rpm".

But, according to this page:

http://www.hotrod.com/how-to/engine/...sepower-guide/

"On an internal combustion engine, a good rule of thumb, according to head-porting guru Joe Mondello, is that the torque peak rpm usually is about 75 percent of the peak power rpm point on everyday engines"

Using that formula this should produce an engine that redlines at 6,000 which fits perfectly with the B5244S - BUT THE V70 I JUST BOUGHT IS REDLINED @ 4,500.

Perhaps I should just simply ask - does anyone own a V70 with a B5244S engine that's redlined at 4,500?

[savabill]

I've just had a quick look around and from what I can see, the 140 and the 170 should have the same clock. The diesel however is as you describe your 170 to be. Perhaps someone else can chime in.
http://m.ebay.co.uk/itm/2003-Volvo-2....c100408.m2460

[savabill]

https://totalcarcheck.co.uk/
I don't know how much checking you did before you bought your motor, might give you more info if you put your reg no in the above link.

[Christerart]

Originally Posted by savabill

I've just had a quick look around and from what I can see, the 140 and the 170 should have the same clock. The diesel however is as you describe your 170 to be. Perhaps someone else can chime in.
http://m.ebay.co.uk/itm/2003-Volvo-2....c100408.m2460

Thanks Bill,

Yes, that's exactly how the instrument cluster looks on the new V70 - but the engine sure as heck is not a diesel....

Weird..=*^)

[Christerart]

Originally Posted by savabill

https://totalcarcheck.co.uk/
I don't know how much checking you did before you bought your motor, might give you more info if you put your reg no in the above link.

Thanks again, Bill - I wasn't aware of this site, so I checked - all's OK - nothing funky..=*^)

All serials match and this is what it says:

Engine Specification
Engine No 2580694
Engine Position Front
Engine Alignment Transverse
No. of Valves 20 Valves
No. of Cylinders 5 Cylinders
Brake Horse Power 170 BHP
Kilo Watt Output 125 Kw
Cylinder Layout Inline
Fuel Delivery Injection

So, just like the sticker on the engine says - correct serial and engine.

Only thing I can think of - possible the instrument cluster replaced - with the wrong one?

But that doesn't explain why the engine runs the way it does - or does it? It absolutely feels and sounds like it's very low rpm.

Still confused..=*^)

[Georgeandkira]

I have the same year and engine. My V70 is 8 miles away at the moment. I'll give my tach a look to see where the redline is.

I doubt there's a way your 500 rpm reading could be wrong but checking it positively with another tach MIGHT be helpful. I say MIGHT because any "tach" today might just be reading an internal tachometer (built into the car).

A good thing to know is actual oil pressure. Low revs at idle always carried that risk.

Do other things like taking regular mileage data.
Fill it with fuel, make that your zero point and begin taking accurate mileage measurements every week.

Walk into a nearby Volvo dealer ship and ask. I find "situations" like these offer us the opportunity to feel out the personnel. If they act like they don't want to bother with you, don't bother with them.
Pare your question down so you don't risk boring the poor dears behind the counter.

"Hello, all my friends' non-turbos redline at 6,500. Mine redlines at 4,500. Do you think there's a problem?" Kira

[Brendan W]

Looks like someone has managed to get a diesel set of clocks to work on the car. It's not too surprising as the clock display will be scaled to match the speed output signal range.
I would measure the engine speed directly with something like a dwell meter or any of the devices that plug into the cigarette lighter or there is even a phone app that does it by sound.
Maybe you local friendly garage would do it.