Someone Please Help?

[Redliner007]

hey guys ive recently had more issues with my 30 just wondering if someone could help me out... recently the motor after an hour or so highway drive started to knock, I just can't understand why...initially i thought it was the hydraulic lifters or something as it sounded like it was coming from the head,it was fairly similar to the sound I heard when i first done the start up after a while of warming up it had gone away. I can't understand how it maybe a bottom end knock, as everything is acl race, forged pistons, shot peined rods, n1 oil pump etc motor was fully balanced and had a run in tune. I only had a standard rb20det turbo on there as I had just finished running it in and only just done the oil change. I cant understand what it may be the car did not over heat on the long trip or lose any power. Thinking back i do remember when i was bringing the car back from the tune at traffic lights the oil pressure droped dangerously low and when i gave it a few revs it went back up again so i kept the revs up on the drive back home, but since then it has never happened again (this would have been in the first 50km or so of fresh build).

I do not know what it can be, please help?!?!? The oil that i'm using is Penrite HPR 10

Few days ago I done a compression test and got between 110-120 across all the cylinders, I thought it may be as the motor is still fairly fresh or maybe the pistons I used were lower compression/head gasket maybe?

Anyone have any ideas? I'm just hoping I don't have to pull the motor out again lol

[nitestage32]

sorry to digg this up,but how is the car running now?