Supercharging the climate with a XJR V8 - MOT Passed

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Hooli
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

I'm doing my best to resist as it will end up with a crunching sound.
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Re: Supercharging the climate with a XJR V8

Post by LynehamHerc »

Sounds like you need to find a wet, deserted car park to have a play and see what it does if you do overstep it.
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

I know what it does, but I don't have the skills to do it deliberately very often. I put my XJ40 through a lamp post due to a diesel soaked roundabout & I don't intend to kill this one in a similar way.
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Re: Supercharging the climate with a XJR V8

Post by LynehamHerc »

Fair enough - it looks far too good to bend.
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

The XJR decided to be extremely Lucas today.

On the way to work it dropped into full-on limp mode & would only do 1,200rpm (about 18mph) which was nice* I'm pretty sure this is due to driving it with bugger all fuel in up a steep hill. It restarted fine once on the flat without doing it again.

Then on the way home from shopping after work it threw up the three amigos of ABS/Trac/ASC. That's down to a slow puncture in the OSF tyre upsetting the ECU when driving around several tight junctions in my estate.

So both easy fixes & no concerns. Not it's most impressive day though.
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

Small update.

I put the missing 5psi in the OSF tyre & had no more issues. I'm sort of impressed at how many errors can be caused by a simple slightly soft tyre.
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Re: Supercharging the climate with a XJR V8

Post by LynehamHerc »

Good job its not 4wd as I understand differing pressures or tyre wear can bugger the 4wd mechanism up.
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

It can on some aye. These never came in 4wd though.
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Re: Supercharging the climate with a XJR V8

Post by MRustbucket »

Hooli wrote: Tue Jun 11, 2019 7:54 am I've not updated this for a while as nothing has happened. It's just a damn nice car.

However today I've discovered that on soaking wet roads it's pretty easy to defeat the traction and stability control.

I turned into a 30mph bend at about 40mph, as I normally do and as I started to add power on the apex it stepped out sideways and did about 100yrds with half a turn of oppo. Seems like that if you don't add enough power to get any wheels pin the car doesn't notice. On the brightside it's lovely and stable like it with no tendency to fishtail on recovery.

I'm not planning to make a habit of this though.
I imagine it can be quite a handful in the right conditions. My brother's wife had the aluminium XKR a few years back - that could be gloriously overpowered at times! My XJ40 doesn't have enough power to misbehave unless you have seriously misjudged things.
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Re: Supercharging the climate with a XJR V8

Post by Hooli »

If you're being ham-fisted then the Tc etc reins it in pretty well. But you can feel how fun* it would be without it. I've had the TC cut in at 70-80mph during quick overtakes in the wet.
The trick to making it misbehave is to be gentle! Just that tiny bit extra throttle to let the back slide without wheel spin goes unnoticed by the computers...
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