rite... went to a test day the other day and went out for the first session and all was well. car was pulling very well and lap times were better than good considering the track condition. about 20 mins into the 30 min session there was a red flag for 1 reason or another and i returned to the pits. as the revs dropped i noticed the oil pressure was a little on the low side at idle but the BIG oil pressure light was not on and the pressure raised with revs so i decided i would carry on the session and keep a close eye on it.
green flag was out so i returned to the track and everything seemed fine. finished the session and returned to to the paddock and the oil pressure problem was still there. i shut it down and gave it 10 mins to cool down thinking maybe the oil was getting a bit thin due to it been a hot day.
when i tried to restart the engine it fired up but the oil pressure light stayed on! i let it run for a good 5 or 6 seconds then shut it off and left it at that as i knew there was an issue.
got the car back to the workshop, removed the engine and stripped the oil pump and sump off to find the pressure relief valve on the pump was stuck open and the pump was rough as fooook!
pulled the bottom end bearing caps off and everything looks fine there. going to pull the mains and cam caps tomorrow too to check there but i think i may have been lucky.
what has caused this? it is a FM built bottom end but only had a standard damper on. do i just need an ati super damper or do i need billet gears too? the car is around 350-400bhp and only sees 7500 revs. has anyone seen a pump failure with an ati damper fitted? also where can i get some new rod bolts for the corrillo a-beam rods? here is a pic of the head.
any help much appreciated!