So it took me a month to get the niggles sorted on the new to me car (serp belt, tensioner, pullet, s/c belt plus tensioner, oil in s/c, fresh engine oil, new airfilter)
and the car's stonking now, really strong midrange and rushes addictively right to the redline.

However on a favourite bit of, erm, private road i discovered that after a few minutes of wide open throttle bursts, hard braking and cornering, i.e. normal driving it stopped responding quite so well. Still good but not really good.

Do these things get heat soak in the intercoolers or anywhere else?

My GT2 completely craves being driven that way and after a few minutes really comes into its own as sweet as anything and really responsive.

I know the old fellows at the Gentleman's Club with pipes and hats didn't design the XJR with complete tear arsing in mind but it seemed to go off the boil a bit early I thought. All guages normal throughout BTW, levels perfect.

Thanks in advance...

 

I/c pump failed?

 

Interesting please elaborate I'm new to jags

 

Grab JTIS. Look at cooling stuff & the elec guide.

 

Sure just had a read about that, looks like I need to test rhat pump. So the supercharger is cooled from the main engine coolant?

 

Not exactly. It has its own heat exchanger, but it doesn't do a good job of shedding heat quickly and efficiently. There are a few options to deal with heat soak, the killer chiller, meth injection, or a larger heat exchanger.

 

Basically I just want to car to work to standard spec and if this means 10 minutes of spirited driving means a little bit of a drop off then so be it. Does this sound normal?

I'll look to testing the electric pump and make sure the system is properly bled so thanks for the heads up there. I lost about 2.5 or three litres of coolant when I changed my belt/idle pulley and tensioner which naturally I topped up but it's likely from the reading you put me onto that I might have air in the intercooler circuit.

 

that sounds pretty typical for liquid intercoolers to me. i.e. normal.

One of the reasons that they're not used that much (and all the plumbing/complexity). They are great for packaging though.

 

Same here. I think Jaguar was thinking that you would only get on it from time to time and not extended.