| Author | Message | ||
     Buelldad |
does the buell - sportster oil pump have a check ball in it like the big twins ?? | ||
| Jeffb |
No. There isn't anything other than the tight fitment of the gerotors to keep oil from draining into the engine from the oil tank. | ||
| Sportyeric |
Incorrect. There is a check ball behind the threaded piece that the oil-filter screws onto. On the tuber engines, anyway. But it does allow leakage sometimes. write down your oil level in the fall and check it in the spring so you know what to expect. | ||
| Jeffb |
True, but the oil pump is located between the tank and the filter mount, so the oil still can leak through the pump into the engine. The check ball would need to be between the tank and the pump to completely stop leakage through the pump. | ||
| Blake |
Interesting, so oil can leak from the tank into the engine via the oil pump's return circuit(s). I'd never thought of that. As the engine cools, the gasses in the crankcase also cool and contract and thus create a vacuum inside the crankcase. It's not too difficult to see how that might tend to pull oil from the tank into the engine via the oil pump's return circuit. But doesn't the return line into the oil tank enter above the surface of the oil? If so, then why wouldn't the vacuum pull air from the tank via that route? Seems that it would, so then if oil is draining into the engine, it must be only due to gravity, not the vacuum. Did I miss something? | ||
| Sportyeric |
Now I'm going to have to go out and look.LOL. | ||
| Buelldad |
what is goin on is when i park it it has an oil leak at the front rh cyl to base stud area -the longer it sets the larger the puddle --it did this all winter --when i mooved it it made a new puddle --wouldnt think there would b that much oil left in the engine --& before u ask no it doesnt blow oil from the vents when u start it --in fact ive cleaned it up & rode it 4 a couple a hours --no leak till it sets --gotta b comin from some where this is an 97 with tstorm pistons ,heads & light crank | ||
| Breadman |
Blake, What would happen if the oil tank is too full? Spencer | ||
| Buelldad |
the tank isnt over full --in fact u can tell thats where its from because the level drops | ||
| Sportyeric |
That's a right head-scratcher! If there is a surplus of oil in the crankcase, why wouldn't it go out through the breathers? If its high enough to leak out at the base gasket, it should shoot right up the pushrod tubes on start-up. If it was draining out of the oil tank into the cam cavity through the oil-pump, that is still connected to the crankcase. Does the check ball just stop oil from emptying out of the oil filter and all the oil passages up-stream back into the oilpump or crank? I suppose it must. |
