Thanks for replies. The contempt for the Perkins not un-expected, posh RRover owners being blissfully unaware of how the other half -we poor relations - live. However we've got what we've got and will hang in there, so to speak. Seriously though zen, I'll follow the tips (already put in a new pressure switch and changed oil an filter of course). Thing is - the Perk is so noisy (no guffawing pls) that I couldn't tell if the bearings main or bigend were rattling - I've compared the sound with a known good working engine and can't tell difference. Thought it might be the oil pump failing but that too is a hassle to replace and I don't know how to test it in situ. Re Jap, yep, there's a popular Daihatsu 2.4 -2.8 (?) conversion even with auto transmission if fortune favours