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Post by tommydp on Sept 26, 2011 19:59:57 GMT
This must be of interest to others, I suppose. It's not a problem for me, as I don't have a mk 1, but I always scratched my head due to this on both the mk 1 cars I drove once. It would be interesting to get some information on this.
It appears to me as mk1 cars may have some oil pressure loss problems, possibly due to the sump not having the bump/ wall in the sump as mk 2/ 3 and Princess sumps have. I often had the oil lamp flickering when going up hill and through bends, even though the oil level was correct. This annoyed me, and finally made me stay away from mk1s, or at least mk 1 sumps:-)
I tried to fit mk 2/ Princess oil pick up strainers, as these are longer, getting oil from further into the sump. This did not cure it.
Was there something wrong with the design of the sumps? I suppose it's caused by the oil floating around in the mk 1's flat sump. If so, why on earth wasn't it rectified until 1968? If this problem was present on new crabs, I would imagine it caused massive complaints? I asked my uncle, but he couldn't recall the issue, so perhaps it wasn't a big problem? Perhaps my mk1 crabs had some failure? At least one was fairly well worn:-)
What experiences do mk 1 drivers here have?, those with original sump of course:-)
Regards, Tommy:-)
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Post by Penguin45 on Sept 26, 2011 23:55:31 GMT
The oil light should only come on if oil is not being fed through the oil filter because the pressure relief valve is open, thus activating the switch.
Chris.
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Post by dave1800 on Sept 27, 2011 1:50:58 GMT
I never had any oil pressure problems with my Mk1 car even though it had gone round the clock before it was finally written off by a crazy land-rover driver. It sounds like a worn oil pump, suction port "O" ring, faulty oil pressure switch or pressure release valve.
You can check by substituting an oil pressure guage for the switch, to see what is happening.
The problem with Mk1 cars and oil pressure was reported to be due to to much oil and the con rods frothing the oil leading to air being fed to the bearings, with high speed running, although I understand this is disputed by some.
Are you sure the car has the right dipstick - there was a modified version but it differs from the MK11/111 cars due I guess to the change in sump design you mention and has to be fitted with a second type oil strainer.
regards
David
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Post by tommydp on Sept 27, 2011 4:03:17 GMT
Hi again! I don't have this problem, but was only curious about the design of the mk 1 sump. I suppose the mk 1 cars I used to drive had some other issues then:-)
Regards, Tommy
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