16-08-2017, 06:51 PM
Both mine & my Uncle's cars (Mk I Rubies) are currently being run-in with new pistons, we are both using SAE30 straight engine oil and will change it at around 200 miles (done about 150 at the moment on mine, Uncle's is at about 100 miles), I am going to re-fill with fresh for another 200 miles or so, then I will change to a modern 20/50 multigrade, the SAE30 should allow for wear to take place to get it all bedded in, then a modern detergent oil will keep the internals cleaner (after 1,000 miles before the re-build when the engine had been thoroughly cleaned, there was a surprising amount of sludge inside the engines...).
Oiling of the plugs seems to have improved (fitted a high-comp heads to both cars) but burning oil, which I am hoping will improve as everything beds in.
I have not been keeping revs down unduly, it is just not practical when faced with all the hills around here, but on the level, the car bowls along quite nicely in top gear.
Engine seems to be quite eager and on the level, the car seems to get to 30 mph without much effort, I am now using a GPS speedometer and this shows that the car's speedo is under-reading by a few mph and I think that has to do with the drum setting, as when stationary, the reading is not at "0" but to the side, I don't want to interfere with the instrument and the GPS is fairly reliable.
Gary
Oiling of the plugs seems to have improved (fitted a high-comp heads to both cars) but burning oil, which I am hoping will improve as everything beds in.
I have not been keeping revs down unduly, it is just not practical when faced with all the hills around here, but on the level, the car bowls along quite nicely in top gear.
Engine seems to be quite eager and on the level, the car seems to get to 30 mph without much effort, I am now using a GPS speedometer and this shows that the car's speedo is under-reading by a few mph and I think that has to do with the drum setting, as when stationary, the reading is not at "0" but to the side, I don't want to interfere with the instrument and the GPS is fairly reliable.
Gary