Dry sump help

I had my car out friday for the first time. 496 TFX an alky. Ran it to the 330, idled the rest of the track. My 18 qt oil tank only had 4 qts left in it. Any thoughts? RCD pump.

 

If you have a filter on the oil return to the tank , best you check to make sure it is flowing in the correct direction.

 

Ditto on all ideas so far and to add one is take the filter out that filters the oil going back into the tank. You should have the filter between the tank and the engine oil going into the block.

Just like the typical layout shown on the RCD page--------------

 

Many have the same issue with the P&P- RCD pump

 

Amen to that. Call Steve.

 

Thanks for the input. I will give Steve a call. The oil is getting back to the pan. I pulled the covers right after the run and there was not an excessive amount.

 

There never is any left over oil by then--------- that won't tell you anything. If you have a filter between the pump flow back to the tank, and BAD tank design with a small exit tube or a small vent will cause problems too.

If you made a full run and had three qts left in the pan back in the pits you would be in the ballpark.
The single stage dry sump are NOT going to leave the tank full and the pan empty after a run.

I'm thinking you have one of the above issues in your system ?

 

The filter in line, looped through the pump. -16 from the tank to the pump. -12 returning to the tank from the pump. -8 vent from the top of the tank to the upper frame rail back to the puke tank. McKinney tank next to the fuel tank.

 

Question Steve,..do you do this

1) fill drysump tank up to certain level mark
2) warm car up on stands before your run
3) top off dry sump to above mentioned level mark

????,........or do you just dump all 18qts in at once..??

As Mark mentioned Oil direction and flow of filter,....
oil to motor.>>>> Dry sump to pump, pump to and threw filter to top of block,.
oil from motor to dry sump,>>>> From oil pan pick up back to pump,.pump to dry sump.

.

 

Vic, I started with 5 in the pan and 13 in the tank

 

Starting with X amount of oil in the pan doesnt really do anything, it just leaves the pan to go back to the dry sump. I can see doing this if the pump system was dry, but when you spin for oil pressure you either have oil pressure after 5 to 8 seconds or you dont,.. (if you dont air pocket is between pump/filter/& block, crack open line from filter to block spin motor with line pointing downward, soon as oil is there reattach line and spin again for oil pressure).
We use 5 gallons for Clints dry sump, never any issues,. and after the run about 3-3.5 gallons drains out of the oil pan, and the rest gets drained out of resevoir, we change our oil after evry run,...
I would fill your resovoir up to a point that it does not drain off into vent, warm motor up, and then top off resovoir back said level point and your ready to race.



Vic

 

-18 ?

Mike; I thought I knew my AN speak pretty well, is this something brand new ?



Bob Meyer
Meyer Race Cars / San Diego
2010 Our 45th Anniversary

 

Mike I caught it too but didn't want to cross till I had at least met ya ! LOL

 

No need to apologize to the ol' guy, I'm just getting more aware of all the stuff I've forgoten, so I think sometimes I miss new things

I am still wondering about that blue thing next to your name, I figured by now you'd have a pic of some Swedish Billet up there