Jaguar stepped back into the sports car market in 1949 with its XK120. The XK140 replaced the XK120 in 1954, and the XK150 arrived for 1957. All three cars are representative of Jaguar’s rebirth in the sports car world.
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The oil damps the carb’s piston travel and keeps it from jumping up too rapidly, causing a fuel “gulp” and a temporary, quick over-enrichment.
I think that's backwards. Delaying the pistons' rise subjects the jets to greater relative vacuum, momentarily drawing more fuel and preventing a lean stumble, not a rich "gulp." This is how SUs get by without accelerator pumps.
These cars really brought the modern sports car era into existence. The XK120 was the fastest production car in the world and dominated club racing. Twin cams, bucket seats, four speed floor shift, real power and high speed was the formula for the next 25 years. Only about 10,000 of each of the XK120, XK140 and XK150 were made, so in my mind these cars are completely undervalued when compared to contemporaies of the day.
The 120 looks great but the 150 is the one to own - 4 wheel disc brakes is a definite advantage.,
Damn. Where is Frenchy when we need him?
This year it will be 60 years that I’ve owned my 1956 Jaguar XK140 Drop Head Coupe which I am currently having partially restored. Over the years I have used it as a long-distance road car, commuter car, second car and third car and have had it partially restored several times.
I was going to sell it a few years ago because the clutch was so heavy but instead I got a knee replacement so I’m okay again although I’m still thinking about selling it when the restoration is finished.
I also have a 2007 XK convertible but I can tell you that it is much easier finding parts for the ‘56 Jaguar than the ‘07 Jaguar.
Stewart in Miami
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