HAMB people. I'm hoping someone might be able to help. I have a set of Morel Hydraulic Roller lifters in a motor, they have started to make a noise on start up. It seems they are bleeding out when parked over night and not keeping pressure, so there's a racket on start up which once the pressure builds up and the oil thins down it goes away. I'm talking like I had solid lifter in there like my flathead. Anyway, I spoke to the guy I got them off and I also did a search, seem Morel are prone to this - not good. I rang a guy at a cam shop I know as I was hoping to get new springs and just pull the lifters and swap the springs over etc. But with the tie bar design you can't pull them down like you can an individual lifter. So... The suggestion was try thinner oil as a 'flush' so in went 10-30 for a while ( running 15-40 normally) that stayed in for about 60 mi , then drained , then I put 20-50 in. Long and short no major difference. So I don't know if I still have say a piece of 'dirt' holding the check ball open or just a dud lifter in general. So. My question is, what is the option for hydraulic roller lifters - company wise? Morel make these for many companies so I want to steer clear of them. the ones I have , have been in the car 7 years but they should last longer than that. My cam shop guy said you could buy another set and have the same trouble straight off. No thanks. Looking around , given I'm in Australia, surprisingly there are a set of chineseium made ones for $160 delivered to my door. But to buy any from the US is going to be about $900. Hell of a difference, but probably a hell of a difference in quality. I'm happy to spend some money, but I don't want to be another $900 into some lifters that are making the same racket again. Anyone got any suggestions? Oh, and this is for a Big Block Olds, so some companies may not make them either. thanks. Motor pic, everyone loves threads with pictures. this is the motor going together about 8 years ago. this is recently when I did a cam swap still nice and clean inside - and yes I have checked the preload.