And yet… the 6.0 XJRS appeared in 1990. A stroked 5.3. Jaguarsport followed TWR practice which had been for years to change the crank. I have one, great engine. Jaguar then designed and produced a 6.0
for people that say its a small engine its really not, each cylinder has the same displacement as a 2 liter inline 4. so its like 4 inline 4 engines combined but with the amazing smoothness of a perfectly balanced v12
Ford supposedly improved the metallurgy of the V12 when they took over Jaguar. Wish they would have kept ownership, now it's TATA Motors India I think.
@@magnoliav12 Thanks for the reply. I think it's a shame that the engine had been written out of the Jaguar script before Ford took over. Perhaps they would have continued with it. The engine had, for the XJ13 I believe, been fitted with twin overhead cam per bank heads so could perhaps have been put into production in that form (it had not been seen as required for the XJ saloon at the time which is understandable)
@@ColinMill1 I have 2 of them, but swapped one with a Caddy engine and I'm thinking of doing a 350 on the other. The V12's are nice, but very high maintenance and they can't stand up to the Texas heat either.
It really makes me sad that Jaguar no longer has a Browns Lane that makes these engines anymore. They really were a sense of pride for the whole nation. Now its just the ununited Kindoms . Sad.
sadly not the cylinder head components as valve seats and valves and even the head castings came from overseas, you cant use any V12 Jag engine on German Autobahn because the vales break or the seats drop when yo drive 220 KM/H chasing BMWs@@jimclarke1108
Not much of an engine? It won a few championships: SCCA, Trans Am, European Touring Cars, World Sports Cars, and a couple of Le Mans 24 hours. No, not much of an engine.
any LT1 350 V8 from the 1970s is stronger, Jaguar cheaped out the V12 from DOHC to OHC and to tiny valves....cant use this engine for real power, a Mercedes 6.3 or 6,9 is also better
@@SchlipperschlopperWe all know many V8s are very good motors, as well as the Mercedes and BMW V12s. But that doesn’t take away from the Jaguar V12’s career and legacy through both the 5.3 and 6.0. I am a huge fan of this powerplant, despite its numerous flaws, and I plan to own a Jag with either of these motors.
I do own one and in 1992 the 285 hp convertible jag V12 ... 300 lbs torque... Not until Chevy introduced the LT1 did it eclipse the V12... ( Or the LOTUS designed LT5 produced by Mercury Marine ) 😅 I know the LT5 and really love it, though I think they design the secondary actuators backwards 😅😅😂❤
I expect it will have been based upon cold start - heat up - cooldown cycles mimicking 25,000 miles of "typical" use but with shorter durations of running at operating temperature in between to fit it into 150 running hours. As you'll know, the vast majority of the wear occurs from the cold starts.
It wasn't. The 5.3 dropped to about 260bhp when it had the cats fitted to it, down from around 299bhp (which some Whitley engineers said was rather optimistic). So going to 6.0 took it from 260 to 318bhp. Admittedly, still rather low compared to modern engines. AMG are getting 345+ bhp out of a 2-litre 4.
@@LouGuthryMotors I was given a 1978 red XJ-S about 5 years ago. It was my uncle's but he was too old to get it back on the road. He had tried to sell it but he got no takes. he was going to send to to scrap but I said I'd take it it to assess it first and then decide what to do with it. It was rotten. Sills were holed. Floor was hold in the front footwell. The were rust spots in other places too. The engine had had its inteke manifolds off and would have needed to be replaced. Overall, I decided that it was too uch, so sold it for spares.
The motor was great right out of the box. Like many excellent small companies, Aston and Rolls, TVR, The Budget for new designs was small. Most of the things that go wrong on the v12s have nothing to do with engineering. Most are bad sensors or wiring common with cars that old. At the moment the XJ’s and XJSs are a bargain. One thing people don’t talk about enough is how well they ride. Just a perfect balance. I own a few cars from that time and the XJS is the one I like driving the most. Way to much misinformation out there these cars, but I guess it keeps them affordable for the people that know.
And yet… the 6.0 XJRS appeared in 1990. A stroked 5.3. Jaguarsport followed TWR practice which had been for years to change the crank.
I have one, great engine.
Jaguar then designed and produced a 6.0
Those early TWR 6 litre cars are fantastic !
for people that say its a small engine its really not, each cylinder has the same displacement as a 2 liter inline 4. so its like 4 inline 4 engines combined but with the amazing smoothness of a perfectly balanced v12
Perfectly said!
4 inline 4 cylinder engines? Really?
8 liter 16 cyl 😂
Ford supposedly improved the metallurgy of the V12 when they took over Jaguar. Wish they would have kept ownership, now it's TATA Motors India I think.
Yes, Ford definitely helped Jaguar and gave the brand more stability and cash resources.
Jaguar stopped production of the V12 two years before Ford bought them.
@@ColinMill1 I stand corrected. Don't remember where I read that, but it was obviously wrong.
@@magnoliav12 Thanks for the reply. I think it's a shame that the engine had been written out of the Jaguar script before Ford took over. Perhaps they would have continued with it. The engine had, for the XJ13 I believe, been fitted with twin overhead cam per bank heads so could perhaps have been put into production in that form (it had not been seen as required for the XJ saloon at the time which is understandable)
@@ColinMill1 I have 2 of them, but swapped one with a Caddy engine and I'm thinking of doing a 350 on the other. The V12's are nice, but very high maintenance and they can't stand up to the Texas heat either.
Great Video 🇬🇧
Glad you enjoyed it
It really makes me sad that Jaguar no longer has a Browns Lane that makes these engines anymore.
They really were a sense of pride for the whole nation.
Now its just the ununited Kindoms . Sad.
In Australia we’ve lost our vehicle manufacturing too.
Fantastic!
Superb V12
Sure is
You cant use any V12 Jaguar because these engines are made fom material made in India and drop valve seats any 20.000 KM!!!!
That model was made in England@@Schlipperschlopper
sadly not the cylinder head components as valve seats and valves and even the head castings came from overseas, you cant use any V12 Jag engine on German Autobahn because the vales break or the seats drop when yo drive 220 KM/H chasing BMWs@@jimclarke1108
Not much of an engine? It won a few championships: SCCA, Trans Am, European Touring Cars, World Sports Cars, and a couple of Le Mans 24 hours. No, not much of an engine.
any LT1 350 V8 from the 1970s is stronger, Jaguar cheaped out the V12 from DOHC to OHC and to tiny valves....cant use this engine for real power, a Mercedes 6.3 or 6,9 is also better
@@SchlipperschlopperWe all know many V8s are very good motors, as well as the Mercedes and BMW V12s. But that doesn’t take away from the Jaguar V12’s career and legacy through both the 5.3 and 6.0. I am a huge fan of this powerplant, despite its numerous flaws, and I plan to own a Jag with either of these motors.
I do own one and in 1992 the 285 hp convertible jag V12 ... 300 lbs torque... Not until Chevy introduced the LT1 did it eclipse the V12... ( Or the LOTUS designed LT5 produced by Mercury Marine ) 😅 I know the LT5 and really love it, though I think they design the secondary actuators backwards 😅😅😂❤
@@Schlipperschlopperglaze harder
jaaaaggggg
💯
I don't know how they say x number of hours is the same as y number of miles/kilometers
I expect it will have been based upon cold start - heat up - cooldown cycles mimicking 25,000 miles of "typical" use but with shorter durations of running at operating temperature in between to fit it into 150 running hours. As you'll know, the vast majority of the wear occurs from the cold starts.
twin turbos and then your talking !
Nice
I’ve seen receipts of more than 40,000 dollars in repairs.
That’s a lot!
🧢🧢🧢🧢🧢🧢🧢🧢
All that palova for any extra 25 bhp
I do like the extra 25 bhp though
It wasn't.
The 5.3 dropped to about 260bhp when it had the cats fitted to it, down from around 299bhp (which some Whitley engineers said was rather optimistic).
So going to 6.0 took it from 260 to 318bhp.
Admittedly, still rather low compared to modern engines. AMG are getting 345+ bhp out of a 2-litre 4.
@@lewis72 My personal favourites are the Pre HE cars. Lighter with better gearing had virtually the same performance as the later 6L cars.
@@LouGuthryMotors
I was given a 1978 red XJ-S about 5 years ago.
It was my uncle's but he was too old to get it back on the road.
He had tried to sell it but he got no takes. he was going to send to to scrap but I said I'd take it it to assess it first and then decide what to do with it.
It was rotten. Sills were holed. Floor was hold in the front footwell. The were rust spots in other places too.
The engine had had its inteke manifolds off and would have needed to be replaced.
Overall, I decided that it was too uch, so sold it for spares.
@@lewis72 Yes even ‘good’ cars can be expensive
Had one, nothing special
Couldn’t get parts even from jaguar, I blame jaguar for not supporting this unique engine/car
Shame
In the end it was only in production for a short time
Not mentioned is that Ford made this engine reliable after they bought Jaguar.
No it wasn't mentioned because it isn't true - that's why.
Ford was really the driving factor behind the V8 engine line
Get real
The motor was great right out of the box. Like many excellent small companies, Aston and Rolls, TVR,
The Budget for new designs was small. Most of the things that go wrong on the v12s have nothing to do with engineering. Most are bad sensors or wiring common with cars that old. At the moment the XJ’s and XJSs are a bargain. One thing people don’t talk about enough is how well they ride. Just a perfect balance. I own a few cars from that time and the XJS is the one I like driving the most. Way to much misinformation out there these cars, but I guess it keeps them affordable for the people that know.
What is the original source of this video? An official VHS? I'd like to get it.
I’m not 100% sure, we just had it on file.