Same thing with the s/e cam plate and oil pump no o-ring between the pump and plate.I asked this question and was told that it was a machined surface and did not require an o-ring. The 1999 dyna that i installed this kit into sounds good when cold but just as soon as it gets warm and at idlle the oil light flikers and you start having lifter noise. I used alignment pins that i made to center the oil pump to plate .I followed the instructions and still having problems. I have ordred new alignment pins and will try that .
Mark
Sounds More Like to me the cam plate PRvalve is sticking open... There are quite a few that have this problem... (new style cam plate or old one)
At idle, IF the valve is Stuck open, not enough pump volume is there to keep the oil-pressure up..
RAISING the Idle to about 2000 RPM and pressure Comes back up is the diagnostic test needed... Alignment is NOT the problem IF you used pins.. There is only a Scant movement on the oil pump to cam-plate and on these newer pumps, less likely Mis-alignment to arise...
IF the oil pressure "comes up" above to 25/30# when HOT raising the RPM From Idle, and disappears again at idle..... MY Bet is the PR valve sticking open... NOT a problem when Oil is cold (viscosity is high)But when HOT, IT will not be enough pump pressure at Idle so it goes to "0"...
I've had a lot of experience with this and do believe I am Spot On with this ISSUE.
You can take out the spring and thimble like piston... Carefully remove the 1/8 roll pin on the cam-plate and see IF the piston Moves or falls out freely (spring will pop out so catch it).. I use a broken 1.8 drill bit shank as a driver...
Using a slightly modified pop-cycle stick, it can be fashioned to Go Inside the little metal piston and can be your tool for seeing IF it has any places it sticks... I'm betting on this to be the problem.
This removal and monkeying Can Be Done without removal of the cam-plate (thanks to a shortened popcycle stick and sloghtly Whittled down to fit Inside the RP Valve bore and Stuck into the piston so it is holding firmly to the inside. Then you can move this little piston around.
IF you feel any tight spots on this piston, IT gets WORSE when Heated on running the motor.
Fine cleaning-smoothing the piston and bore MIGHT be needed IF sticking.
More about that IF Needed...
signed....BUBBIE
Don't Stretch the spring and careful when putting it back into the bore,,,,Keeping the spring Well Above the roll pin when replacing it OR you WILL damage the spring end...
I never have believed in MORE spring pressure to avoid the sticking open problem JUST so the piston Travels fully with No bind or Sticking.. My Idea of Loose here IS better than tight.
Moderator;Please add to above post and remove this request Thanks Bubbie