The XK engine was considered very powerful - in 1949! The 4.2 engine in a 1980 Daimler Sovereign was advertised @ 205 HP, compare that with the average Civic Type R or Golf R today.
I've rebuilt this engine, nothing special, just bored, crank ground, 9:1 pistons, big valves, Webers and tubular exhaust manifold, bit of porting work and balanced. If I can get 230 -240 I will be very lucky.
The running gear is mostly XJ6 so incredibly heavy, the diff weighs a ton, forged drive shafts and wishbones etc. Plus the kit, especially the body are very chunky. I think a road tester would describe everything as being reassuringly substantial.
Weight all up will be around 1100 kilos so power to weight just a bit more than the XI.
Apart from the boring/ grinding of the engine I've done it myself, so no one to blame.
The Jaguar manual box was a stodgy old thing and quite rare so I've fitted a 5 speed unit from a Supra, it's a common mod and the bits are available, unlike some of the old Jaguar bits like the smooth polished cam covers and bell housings.
Brakes are refurbished standard XJ6 (inboard rears) so they should stop the thing, not sure about the 185x16 tyres keeping up though.
I'm assuming that the aforesaid tyres will contribute to some interesting cornering characteristics in the vintage style.
I've applied for an IVA test, so right now I'm just fitting/removing various bits to please VOSA Man. Of course I've no idea if I'll get a date so we'll just have to let things happen.
Back to the shed.