Dry sump Sec. Tank breather

[V8Dom]

I've changed my engine breather and fitted a tank on bulkhead from rocker covers. My dry sump tank near the rear I've vented just with a pipe but it's pushing out a lot of oil on a run.. Tank was 2/3 full. Now half.. Anyone know why so much pressure on breather. I thought it would be negative pressure

[V8Dom]

I'm wondering because breather pipe at top of dry sump tank is rearward of tank.. When I accurate hard. The oil just with inertia goes up the pipe.. I'm going to try tomorrow with breather pipe in front of the tank

[V8Dom]

My dry sump

[V8Dom]

My new breather for rockers

[V8Dom]

Im running 3 stage pump one blanked off. Both rocker covers vent via tank above as in photo. The oil is coming from tank breather on dry sump tank. First off i just had a tube 12 inch long vertical and that pushed oil. Then i ran pipe from tank up roll cage to near top of clam. Still got oil but not as much..

[V8Dom]

thanks ken
ill have a look.

, sorry off subject have you sorted your exhaust yet?

Edited by V8Dom on Tuesday 30th August 18:01

[V8Dom]

ok im all sorted
oil filler cap that screws onto tank was loose

this somehow cause vacuum in tank and push out of breather. not sure why but sealing that has caused engine not to breathe now.

thanks for help guys