Using the Cross sectioned view of the engine from certain Workshop Manuals, by drawing a line along the centre line of the dipstick, this line comes exactly into the centre line of the bottom of the sump. Who knew that ! From the previous referenced post I had measured the distance from the top of the block where the dipstick enters to the bottom of the sump to be 11 and 3/8 inch. By knowing the dipstick measures 9 and 3/4 inch from the bottom of the dipstick to the dipstick cap, I could calculate the dimensions relative to the Jaguar Cross section drawing. By knowing the relative positions of the 3/4 inch long hash mark on the dipstick, gives an indication of where the oil could be within the sump with the following observations.
The red line is the level of the bottom of the dipstick hashing. Interestingly, that is still within the sump baffles, but of more interest to me is that the blue line is the mid point of the hashing is exactly on the top of the sump baffle which makes perfect sense - typically Jaguar to get that correct ! Note how low the oil pick up and basket is within the sump baffles. Logically, any oil above the sump baffle could be prone to surge on forward/backward motion of the oil, so the green line which is the top hashing is perhaps emphasising any oil at that level is above the baffles and should be the absolute maximum - as you can see the proximity of the crank lobes which definitely should not get near the oil in the sump. The green dimension should be 7.87 inch, rather than 7.85 inch, but I’m not changing it now !
Still, just a bit of fun to wrap up my sump posts !
Cheers,
Dave
That’s very useful and enlightening, Dave.
