landcruiser 2H oil pressure!?

I think you may be onto something there, the engine rebuilder assures me that everything was replaced or re-conditioned and I believe this to be true however this problem could be caused by the oil pump struggling to prime due to excessive clearances although I am still leaning towards thinking that it is simply taking a long time for the pump to fill the empty oil galleries, I have recently noticed that just before the oil pressure gauge flickers into life the engine shudders on it's mounts, very lightly.

check oil pressure with a external gauge first. if it is not priming return to re builders & have oil pump exchanged immediately do not let them tell you "this is normal for a 2h blabla bla.." I can assure you it is not normal (i am a mechanic myself) They should not have returned the vehicle to you before this problem was rectified. The last 2h i rebuilt had full pressure in no time . Yours should too..no check valve on the oil cooler in a 2h just checked my manual (Toyota genuine manual) If you are running dry you will do irreparable damage sooner than later.
....666toy

I have'nt checked the oil pressure with an external gauge as the sender for the oil cutout is new, the dashboard gauge appears to be working fine as it won't register anything until the oil cutout circut lets the engine run...so i'm still thinking that it is a genuine problem of not retaining oil in the engine when switched off.

Bugga, I can't post a photo because I am not a member, but I can tell you about it. It's a 5/84 model that was my Uncle's farm ute that finally died about 4 years ago and was stored in a shed for around 2 years. When he could'nt sell it he gave it to me. The cab was in reasonable condition ie. no rust etc but everything else was knackered so I thought it had potential to be rebuilt although it has cost more than I anticipated (these things always do), about $19,000 in parts alone but it does now drive like brand new. I changed the origional 4.1 diff gears for 3.5's and installed sound insulation to keep cab noise down to a dull roar. I have the origional purchase papers, new it cost $14,763 including bull bar and O.R.C. Those were the days!

I am hoping it is only a check valve. Is the ckeck valve at the oil pump really a check valve? I suspect it might be the pressure relief valve.
Another member advised that the 2H does not have a check valve in the oil cooler (only 12HT), Can anyone expand on this? My engine is an early 2H (no timing inspection plug on timing cover), could later 2H's have a check valve in the oil cooler to rectify this problem?