"the supercharger only kicks in when needed"
#1
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Hello
(I don't own a Jag, in the stage of considering x-350.)
In several videos I have heard this guy saying that the SC in XJR (x-350) engages only when needed:
I believe SC is engaged at all times, as it is (unlike turbos) mechanically linked to the engine itself. Am I wrong?
Cheers
(I don't own a Jag, in the stage of considering x-350.)
In several videos I have heard this guy saying that the SC in XJR (x-350) engages only when needed:
Cheers
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#4
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So in the video Valentin Cristea was not completely wrong either, only maybe not very accurate.
I assume he was trying to get across the following message "if your foot is light, forced induction can be avoided and you can drive almost-almost-economically with this car..."
Is it correct to say the valve closes only under HARD acceleration?
(Hopefully next week I will get to test drive x-358 V8 VDP, I am afraid it is not SC'ed though.)
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#8
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#9
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But.... if you're driving a V8 Jaguar and worrying about MPG.... really???
And worrying about it with an SC... nooooooo.
#10
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Yes, I kinda go along with this, even though I read somewhere that what used to be called Vanden Plas was at some point "rebranded" to Super V8. But I believe that was limited to US.
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#11
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I was trying to understand what the remark "SC only kicks in when needed" meant, it was made just after the mileage was mentioned. (5:50 in the video)
#12
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Motorcarman's explanation is correct. When the engine is running so is the supercharger all the time.
When the engine is just idling or at low rpms the bypass valve opens so that there is much less to no boost . Also it opens when the accelerator pedal is lifted immediately after say a wot run.
So the supercharger even tho running all the time is not necessarily supplying boost all the time. Obviously it is when under hard acceleration.
When the engine is just idling or at low rpms the bypass valve opens so that there is much less to no boost . Also it opens when the accelerator pedal is lifted immediately after say a wot run.
So the supercharger even tho running all the time is not necessarily supplying boost all the time. Obviously it is when under hard acceleration.
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#13
#14
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Well to be absolutely correct, there were a number of different X350/X358 with superchargers...
XJR
Super V8 SWB
Super V8 LWB
Super V8 Portfolio 2006
Super V8 Portfolio 2009
Daimler Super Eight
VDP Supercharged
The VDP Supercharged was the same spec as the Daimler for the US market, as previously mentioned the Daimler name was a legal clash with Mercedes...
Either way they are all relatively rare cars... worldwide sales figures;
Super V8 SWB, 1309 units
Super V8 LWB, 943 units (does not include the Portfolios)
XJR, 7316 units (includes the XJR Portfolio)
Daimler Super Eight, 853 units
VDP S/C and Super V8 Portfolio, 1277 units
Trying to breakdown the combined VDP S/C and Super V8 Portfolios
2006 Super V8 Portfolio, 265 units (confirmed)
2009 Super V8 Portfolio, about 300 units
VDP Supercharged, about 700 units
You should have more luck finding a VDP Supercharged in the US than a Portfolio.
XJR
Super V8 SWB
Super V8 LWB
Super V8 Portfolio 2006
Super V8 Portfolio 2009
Daimler Super Eight
VDP Supercharged
The VDP Supercharged was the same spec as the Daimler for the US market, as previously mentioned the Daimler name was a legal clash with Mercedes...
Either way they are all relatively rare cars... worldwide sales figures;
Super V8 SWB, 1309 units
Super V8 LWB, 943 units (does not include the Portfolios)
XJR, 7316 units (includes the XJR Portfolio)
Daimler Super Eight, 853 units
VDP S/C and Super V8 Portfolio, 1277 units
Trying to breakdown the combined VDP S/C and Super V8 Portfolios
2006 Super V8 Portfolio, 265 units (confirmed)
2009 Super V8 Portfolio, about 300 units
VDP Supercharged, about 700 units
You should have more luck finding a VDP Supercharged in the US than a Portfolio.
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#18
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[QUOTE=Cambo;... worldwide sales figures;
Super V8 SWB, 1309 units
Super V8 LWB, 943 units (does not include the Portfolios)
XJR, 7316 units (includes the XJR Portfolio)
Daimler Super Eight, 853 units
VDP S/C and Super V8 Portfolio, 1277 units
.[/QUOTE]
Just ran across this thread - is the 943 Super V8 LWB the total production for all years? If so I didn't realize they were that rare.
Super V8 SWB, 1309 units
Super V8 LWB, 943 units (does not include the Portfolios)
XJR, 7316 units (includes the XJR Portfolio)
Daimler Super Eight, 853 units
VDP S/C and Super V8 Portfolio, 1277 units
.[/QUOTE]
Just ran across this thread - is the 943 Super V8 LWB the total production for all years? If so I didn't realize they were that rare.
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