RichardSIA HalfDork
10/5/20 9:32 p.m.

Hope I have this in the right thread.

A friend has threatened to give me his 2010 XJR  with an "Internal coolant leak", as it fails CA SMOG test repeatedly. IF his diagnoses is correct I do not know why he does not just spend the around $600.00 to have it fixed. He did mention "Already spent a ton of money on it".

So, anyone here familiar with these engines? He thinks supercharger manifold intake leak.

Before anyone gets too excited about "Challenge car!" the deal with Peter is that he may give me a car but I am not allowed to sell it right away, maybe in a few years. 

He also has an old 3.8S that has sat in his garage for a few decades, guess which I would rather have?

Bottom line, is a "Free" XJR in need of repair worth having? How much of a PITA will it really likely be to fix, time and $$? 

dherr (Forum Supporter)
dherr (Forum Supporter) Dork
10/6/20 7:17 a.m.

I clearly need to find some better friends smiley

84FSP UltraDork
10/6/20 7:20 a.m.

I would fix it and give it back to a friend.  If not keep and rock out with Shaguar license plates.

tester (Forum Supporter)
tester (Forum Supporter) Reader
10/6/20 8:07 a.m.

Didn't you you just post a whole thread about how you dislike fuel injection, overhead cams, VVT and the like?  Based on that, I would say that a modern Jaguar with all that stuff, plus a supercharger is not going to be very fun for you. 

"Gifts" with strings attached are a good way to end a friendship. To paraphrase, "You can have the car but you cannot sell it" seems complicated.

Best of luck. 



RichardSIA HalfDork
10/6/20 11:08 a.m.


Looks like we may just wash off the CA title via temporarily making it a Nevada car, then sell as a parts/project car. I'm not really anxious to work on this marvel of over-complexity and he has several other cars to play with.

Getting rid of the CA title is a necessity as CA makes the SELLER responsible for the expense of passing SMOG, apparently without limit! So repairable cars end up in the scrap yards.

OHC does not scare me, I have Alfa's and XK Jags. But overly expensive brittle plastic bits and multiple computers do. It seems worst case may be head cracks weeping coolant into the intake? Block sealer does not last as the intake endures both vacuum and pressure. The current plan is that it will go up for sale in a couple of months, but, NOT in CA! Drives fine but not SMOG worthy.

So I'm passing on the XJR even at "Free" but still want his 3.8S "Barn Find" with "Patina".

Datsun310Guy MegaDork
10/6/20 2:07 p.m.

Head off and in trunk. 

"Could be a fun project"


frenchyd PowerDork
10/6/20 2:17 p.m.

In reply to Datsun310Guy :

It's not hard to do if it's only one head gasket. But getting the other head off without a head pulling tool can be a major wrestling match. Easier to pull the engine first. 
V12's aren't known for blowing head gaskets unless 87 octane gasoline is used  and the engine is thrashed ( 11.5-1 compression ratio )

docwyte UberDork
10/6/20 6:17 p.m.

Colorado makes the seller take care of smog too.  Pretty common thing...

RichardSIA HalfDork
11/14/20 9:54 p.m.

Peter is unhappy with the XKR again.

I'm suggesting he offer it here.

But he is in CA, so not sure if there are many who would be interested at any price.

Indy "Nub" Guy
Indy "Nub" Guy PowerDork
11/14/20 10:13 p.m.

In reply to RichardSIA :

I'd take that for free yes

Yes sir

AnthonyGS (Forum Supporter)
AnthonyGS (Forum Supporter) Dork
11/14/20 11:47 p.m.
RichardSIA said:

Peter is unhappy with the XKR again.

I'm suggesting he offer it here.

But he is in CA, so not sure if there are many who would be interested at any price.

A quick internet search shows these cars eat head gaskets like I eat tacos.  Make it challenge priced and I may do something stupid that could turn out really awesome myself......

RichardSIA HalfDork
11/15/20 10:34 p.m.


What is "Challenge Priced"?

Still sucking coolant into the engine so cannot pass Kali. smog. Otherwise very clean and runs fine.

Peter does not want to spend more on it, I don't want to work on it and have no space anyway. I don't even know if the suspect SC manifolds are aluminum or plastic. Might be simpler to swap engines than to fix this one but would there be a point if this is a common issue?

I've suggested he sell it, if he agrees it will show up in the For Sale topics. I do know that no matter what he decides it will NOT be available in CA. May be sold with some components removed to encourage a buyer to actually fix it.


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