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Hot exhaust fumies

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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radek93
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Joined: 7 December 2019
Year and Model: S70 98
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Re: Hot exhaust fumies

Post by radek93 »

misha wrote: 17 Jul 2021, 12:09 You can't compare two practically different cars.
V70 p2 have different engine management,catalytic converters,sensors....and much more.

Plus....when engine runs on LPG....it runs a bit hotter than engine on petrol.

That said....temperature in combustion chamber is higher when engine runs on LPG.
V70 P2 also has Lpg. And the exhaust gas temperature is 100 - 110°C after a long drive. I also feel that it is blowing more strongly from the exhaust tip

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misha
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Year and Model: '97 850 2.5 20v
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Post by misha »

Different cats...different managements,different sensors,manifolds...etc.

Like i said....you can't compare practically two different cars.

Even for comparing the same two cars with same engines and years....one will run "richer" in the range of spec...the other one will run "leaner"...but also in range of spec.

One would have excellent compression...the other one would have compression in range but still good and strong engine...for example.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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