I’ve mentioned on here recently about the oil pressure issues we thought we might have been having, and had been optimistic that it was behind us following the mid-season rebuild of the engine. However, that was not the case…
After refitting the engine, and having it running late last week, we found that the reported oil pressure (confirmed with a mechanical gauge to ensure the electronic version didn’t have a problem) was lower than usual at idle, and massively high when revving a bit. When I say massively high, I mean about 150psi – almost twice what we want!
So over the weekend, the engine was removed from the car again, and partially stripped to see what we’d done wrong. And we found nothing. The bearings were nice, with good clearance, and all in the right way around. All the oilways were clear, and the head gasket was on the correct way – all very basic things, but when you’re struggling you check everything. The oil pump was taken off and checked, with nothing apparently wrong. Whilst we were there, we thought we’d make a quick drawing off the pressure relief valve system (as it is different from the TOM’S pumps we have in stock), and that is when we found the problem.
More










