Just replaced the heads on a 1984 EA81 1800 Subaru. (2 litres of water had dropped into te oil - nice). Had the heads skimmed and the workshop did a nice job. Put it all back together today (1 week later) and torqued everything down and set the valve clearances (twice!) Started it up and got lots of valve noise - more than there was before. Double checked everything (Tappets, push rods, rockers) and everything looks sweet, but lots of noise.....very sad after hours of work.
Read around the net and see quite a few people taking about the need to replace seals on Subaru oil pumps to maintain enough pressure to keep the valves lubricated.
Now, this car has done 220,000 kms and there is no leak from the oil pump - but it did sit with shitty oil+water mix in it for a week :( Remembering that this is the OHV subaru engine - does it suffer from the same oil pump problems? Should I be replacing the oil pump seals on this car.
The oil pressure light goes out once the engine starts, but is that good enough? Is it possible to have enough pressure to switch off the light, but not enough to loob the valves? Any other ideas?
Al, Australia