wolfpackjeeper
NAXJA Forum User
- Location
- 500' and 500KCAS, RAF lakenheath
I know JT and have been trying to help him trouble shoot over the phone from 500mi away. But I think his problem is going to end up being that his engine builder turned the crank too much on at least one surface and it now probably has one or two bearings just enough out of spec to cause that drop.
He has removed and replaced the oil pump twice
From the bottom end he has checked the cam for free play as much as can be done without pulling it.
I could see a potential that if you grooved the lifter bores maybe, but it does not seem to likely.
He removed his oil cool and remote setup, which did provide a marginal increase.
I believe he is going to drop the pan and plastigauge the bearings to see if maybe one or all are just out of spec. He said that he thought the oil plug was in, and it is topped off. I also have him checking while he can to make sure he has the right pickup clearance with the bottom of the pan. Too much can cause it to drop pressure as well. I know I beat mine out to about 1/8th to 1/4 in clearance.
I'll throw up his findings here in case he doesn't, that way it may help someone else.
He has removed and replaced the oil pump twice
From the bottom end he has checked the cam for free play as much as can be done without pulling it.
I could see a potential that if you grooved the lifter bores maybe, but it does not seem to likely.
He removed his oil cool and remote setup, which did provide a marginal increase.
I believe he is going to drop the pan and plastigauge the bearings to see if maybe one or all are just out of spec. He said that he thought the oil plug was in, and it is topped off. I also have him checking while he can to make sure he has the right pickup clearance with the bottom of the pan. Too much can cause it to drop pressure as well. I know I beat mine out to about 1/8th to 1/4 in clearance.
I'll throw up his findings here in case he doesn't, that way it may help someone else.