Cope
Fusing with fire
You mean the hole in the intake next to the distributor? That's farther that 7 1/2 inch to the main cap?
You mean the hole in the intake next to the distributor? That's farther that 7 1/2 inch to the main cap?
try some extra oil maybe its going low at constant rpm
Did anybody mention SUSPECT THE GAUGE?
Well, it might increase pressure but it does as jimjim says.... diverts the pump's oil output to the filter inlet passage. If the plug is out, the oil goes straight into the passenger side oil gallery. It won't loop back through the filter; the pressure where the plug was supposed to be will be a fraction of a psi higher than at the top where the oil filter outlet passage joins so oil won't flow backwards. I'd expect it to slowly purge the air out of the filter and then the filter will be just a static 'wart' on on the oiling system. Any oil drain back protection from the filter will be lost.the plug under the rear main cap will not effect oil pressure it directs oil thru the filter
If that plug is not in there and the engine is pumping oil then let's say for example the oil pressure gets up to 60 pounds. The bypass in the pump opens and drops the pressure in the pump so then by not having the plug in that line the oil goes back to the filter and it stops going up to the top of the motor then pressure drops bypass kicks out oil pressure builds up again feeds the top of the motor. Until pressure builds up bypass opens in the pump and once again the oil pressure drops.
a la Deja Vu. If you hook a garden hose to the front and back faucets of your house, turn them on, how is that gonna affect pressure at any of you interior faucets?
a la Deja Vu. If you hook a garden hose to the front and back faucets of your house, turn them on, how is that gonna affect pressure at any of you interior faucets?
NopeA drop in volume.
Nope
The restrictions that cause pressure buildup are >95% in the motor and do not change with the filter bypassed. So, there is always positive pressure from the pump on both the passages to and from the filter, with or without the plug. The oil cannot 'stop going to the top' of the motor since there never is any lower pressure in the filter area to which it can flow.If that plug is not in there and the engine is pumping oil then let's say for example the oil pressure gets up to 60 pounds. The bypass in the pump opens and drops the pressure in the pump so then by not having the plug in that line the oil goes back to the filter and it stops going up to the top of the motor then pressure drops bypass kicks out oil pressure builds up again feeds the top of the motor. Until pressure builds up bypass opens in the pump and once again the oil pressure drops.