Jaguar Mk2, Frequently Asked Questions

Buying and Ownership

What’s the best Mk2 to buy for a first-time classic car owner?

A 3.4-litre with the all-synchromesh gearbox (1965-67 production) in clean, running condition. The 3.4 gives you 90% of the 3.8’s performance at a significantly lower purchase price, and the all-synchromesh gearbox is much easier to live with than the Moss unit. Avoid projects unless you have deep pockets and patience, Mk2 restoration costs are enormous and unpredictable.

How much does it cost to maintain a Mk2 annually?

For a well-sorted car driven regularly (2,000-5,000 km per year), expect to spend $3,000-6,000 AUD annually on maintenance and unexpected repairs. This includes annual servicing ($800-1,500), insurance ($1,500-3,000 agreed value), registration, tyres when needed, and the inevitable unplanned repairs. A neglected car returning to regular use will cost significantly more in the first year or two while deferred maintenance is addressed.

Is a Mk2 practical for regular weekend driving?

Yes, with caveats. The Mk2 is a genuine four-seater with a reasonable boot and excellent motorway manners. The 3.4 and 3.8 have more than enough performance for modern traffic. However, the car needs regular exercise, sitting for months causes more problems than driving does. Allow 15 minutes for warm-up, check oil and water before every drive, and keep the fuel tank full to reduce condensation.

Should I buy a manual or automatic Mk2?

Manual, unequivocally. The Borg-Warner Type 35 automatic was fine for its era but it dulls the driving experience and reduces performance. A manual 3.8 with overdrive is the most desirable specification. The all-synchromesh gearbox is significantly better than the Moss unit, if you can find a late manual car, that’s the one to buy.

What’s the difference between a Mk2 and a 240/340?

The 240 (2.4L) and 340 (3.4L) were cost-reduced versions of the Mk2, produced from 1967 to 1969. They have slimmer bumpers, Ambla vinyl interior instead of leather (leather was optional), simplified dashboard trim, and the 240 uses Stromberg carburettors instead of SUs. Mechanically, they’re essentially the same car. A 240/340 in good condition is an excellent and affordable alternative to a Mk2, the missing trim items can be retrofitted.

Are Mk2 parts readily available?

Yes, surprisingly well. The major Jaguar parts suppliers, Martin Robey, David Manners, SNG Barratt, stock a comprehensive range of body panels, mechanical parts, interior trim, and rubber seals. Reproduction parts quality varies considerably. Mechanical parts (engine, gearbox, suspension) are generally good quality. Body panels range from acceptable to poor, always trial-fit before welding.

Mechanical

How often does the XK engine need servicing?

The XK six requires more frequent attention than a modern engine. Oil and filter every 5,000 km (use 20W-50 mineral oil, synthetic oil can cause leaks in engines with old seals). Valve clearance check every 10,000 km. Carburettor synchronisation every 10,000 km. Points and condenser every 10,000 km (or fit electronic ignition). Timing chain inspection every 30,000 km. Cooling system drain and refill every two years.

Can I fit electronic ignition to a Mk2?

Yes, and it’s one of the best modifications you can make. A Pertronix Ignitor or Lumenition unit replaces the points and condenser inside the existing distributor, it’s completely reversible and invisible from outside. Electronic ignition gives more consistent timing, stronger spark, and eliminates points maintenance. Cost: $200-400 for the kit. Fitting is a 30-minute job.

What oil should I use in the XK engine?

20W-50 mineral or semi-synthetic oil. Do not use fully synthetic oil in an engine with original cork and rope seals, the thinner oil will find every gap and leak profusely. Castrol Classic XL 20W-50 or Penrite Classic range are popular choices. Change every 5,000 km or annually, whichever comes first. The XK engine holds approximately 8.5 litres with filter change.

How do I know if the timing chain needs replacing?

Three signs: a metallic rattle from the front of the engine at idle (particularly noticeable when cold), the engine feeling flat or down on power compared to what it should be, and if you remove the timing cover inspection plate, visible slack in the chain. The chain should have no more than 12mm of free play. If the tensioner is fully extended and the chain still has slack, replacement is overdue.

What’s the correct tyre size for a Mk2?

The original tyre size was 6.40 x 15 crossply. The modern radial equivalent is 185/80R15 for wire wheels or 185/80R15 for disc wheels. Some owners fit 195/80R15 for slightly more grip, but this can cause clearance issues with wire wheels. Stick with 185/80R15 for correct appearance and handling balance. Avon Turbospeed or Pirelli Cinturato CN36 are period-correct choices.

Can the Moss gearbox be replaced with the all-synchromesh unit?

Yes, this is a popular upgrade. The later all-synchromesh gearbox (fitted to late 3.4 and all 3.8 cars) bolts to the same bellhousing. You’ll need the gearbox, a matching propshaft, and the correct gearbox mount. The overdrive unit from the Moss gearbox can sometimes be adapted, but it’s easier to source an all-synchromesh box with overdrive already fitted. Budget $4,000-7,000 for the swap including parts and labour.

Why does my Mk2 overheat in traffic?

The original cooling system was designed for British conditions, not Australian summers. Common causes: restricted radiator core (internal corrosion), failed thermostat (stuck closed), collapsed lower hose (internal deterioration), worn water pump impeller, failed viscous fan coupling, or simply insufficient airflow in slow traffic. Upgrade to an aluminium radiator with increased core capacity, fit an electric fan as a supplement to the mechanical fan, and ensure the thermostat is opening at the correct temperature (82°C).

Body and Restoration

How do I assess rust damage on a Mk2?

Start underneath. Get the car on a hoist or crawl under with a torch, a screwdriver, and a small hammer. Tap along the sills, solid metal rings clearly, rotten metal thuds. Check the floor pans by lifting the carpets inside. Push firmly into the A-post bases, the inner wings around the suspension turrets, the boot floor, and the spring hangars. Any softness, flaking, or perforation in structural areas is a serious concern. Surface rust on non-structural panels is normal and manageable.

How much does a bare-metal restoration cost?

A comprehensive bare-metal restoration of a Mk2, including bodywork, paint, engine rebuild, gearbox overhaul, suspension rebuild, new wiring loom, interior retrim, and chrome rechroming, typically costs $80,000-150,000 AUD at a specialist restorer. The spread depends on the car’s starting condition and the standard of finish. A concours-level restoration for show purposes can exceed $200,000. You will almost certainly not recover these costs on a 2.4 or a 3.4, only the best 3.8s justify this level of investment.

Should I convert my Mk2 to negative earth?

Yes, especially if you’re fitting modern accessories. The Mk2 was originally positive earth (positive terminal connected to the chassis). Converting to negative earth is straightforward, swap the battery connections, repolarise the generator (or fit an alternator), and reverse the ammeter connection. Cost: $200-500 if done during a rewire. Many owners combine the negative earth conversion with a new wiring loom and an alternator conversion.

What’s the best colour for a Mk2?

This is entirely subjective, but the Mk2 looks best in dark colours. Carmen Red over tan leather is the classic combination. Opalescent Dark Blue and Opalescent Dark Green are stunning in sunlight. Sherwood Green over biscuit leather is elegant. Black is dramatic but shows every imperfection. The two-tone paint option (contrasting roof colour) was available from the factory and suits the car well. Avoid non-original colours unless you’re absolutely certain, a Mk2 in a wrong colour looks deeply wrong.

Can I daily-drive a Mk2?

Technically yes, but it’s not advisable. The Mk2 is a 60+ year old car with no crumple zones, no seatbelt pretensioners, no ABS, and no airbags. The drum rear brakes are inadequate by modern standards. The Lucas electrics are unreliable. Parts can fail without warning. The car is also extremely theft-attractive. Use it as a regular weekend car, drive it to events, take it on tours, but keep a modern car for daily duties.

Value and Investment

Are Mk2 values still rising?

Yes, gradually. The Mk2 has been a blue-chip classic since the early 2000s, and values have risen steadily. The 3.8 manual with overdrive has seen the strongest appreciation. Values dipped slightly during 2020-2022 but have recovered. The long-term trend is upward, the Mk2 is a genuinely important car in automotive history, and the supply of good examples is shrinking as rust claims the survivors.

Which Mk2 variant is the best investment?

The 3.8-litre manual with overdrive in matching-numbers condition. This is the car collectors want, and clean examples are becoming genuinely rare. The 3.4 manual is the next best bet. Automatics and 2.4s will appreciate more slowly but from a lower base, they’re still good value for money as driving classics.

How can I verify the authenticity of a Mk2?

Jaguar Heritage (JDHT) can provide a heritage certificate confirming the original specification of any Jaguar by chassis number, engine size, body colour, trim colour, and equipment as delivered from the factory. Cost is approximately $150. This is essential if you’re paying a premium for a matching-numbers car. Also check the chassis number stamped on the bulkhead against the number on the V5C/registration document.

Is the Daimler V8-250 a good alternative to the Mk2?

Yes, it’s excellent. The Daimler uses the same body but with Edward Turner’s 2.5-litre V8 engine and Borg-Warner automatic transmission. The V8 is smooth, torquey, and characterful, a very different experience from the XK six. The Daimler is often cheaper than an equivalent Mk2, partly because it’s automatic-only and partly because the Daimler badge carries less cachet with collectors. As a driving car, it’s arguably more relaxed and refined than the Mk2.

What documentation should a Mk2 come with?

Ideally: original log book or registration history, stamped service book, MOT/roadworthy history, receipts for major work (engine rebuilds, body restoration), photographs of any restoration, and a Jaguar Heritage certificate. Complete documentation significantly increases value and buyer confidence. A car with no history is a gamble, you don’t know what’s been done, what’s been neglected, and what’s been bodged.