A number of club members have get involved in the ride height debate for a MK 1-2 Jaguar. It appears that 18 1/2 to 19 inches from the ground to the centre of the boot lock is about right.
However members of other registers have also done investigation into their cars and have found some to be well and truly in need of serious adjustments and repairs to the rear end. Malcolm Imrie who wrote an article for the Bits and Pieces section of February magazine on XJ6 rear springs provides a good example of “getting it right”.
The MK 1&2 Jaguar workshop manuals are a little skimpy about ride height for the rear end of these cars. Everybody knows that the correct height for a front end is about 3 finger widths between the top of the tyre and the bottom of the mudguard arch. In the workshop manual there is a specification for the amount of curve in the rear springs but that is about all.
It was not until I had the two MK 1s in the shed that I noticed there was a completely difference in the way the cars appeared to “sit”. The red car was definitely lower in the rear end. With a tape measure I checked the height from floor level to the centre of the boot look . To my surprise I found a difference of 2 ½ inches. The red one measured 16 inches and the white one 18 ½ inches. The difference really becomes apparent when you realise the red one is on standard 185x15 tyres and the white one is on 205x65x15 tyres that have about ½ inch less in tyre profile height.
I would appreciate any feedback from MK1 and 2 club members on the specific height measurement on their cars along with the types of tyres fitted. We have checked another club members MK2 and it appears 18 ½ to 19 inches to the bootlock centre is about right on 185x15 tyres.
I always thought the red car looked to be “dragging its bum”. Once I have established the correct height it is off to the spring works for resetting