Club Cobra - Dry sump

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Stronger man then me

Pat Buckley Pat you are a stronger man than me to cut that fender up? You did a nice job, me I wouldn't have the heart.:LOL: :LOL: :LOL: Rick L. Ps I have seen the pictures of the orginial with the dry sump setup. This coming yesr the SCCA meet is a Millville in south jersey. May even bring the car for a day. About 2 1/2 hours from home to Cape May area at legal speed.

I have been running/building dry sumped setups since 1972---I have never seen or heard of a tank draining into the engine to find its own level---if it were to do that--it would have to pass thru the oil pump( highly unlikely) pass thru the lines to filters/coolers ( again unlikely with only a few inches of head pressure) and then have to go thru the engines oil galleys/bearings,Etc.

If the system is blowing oil out the top of the tank, the breather/separater system/method is inadequet

With a current tech dry sump pump a vacume pump is unnessary as it is possible to pull over 20 Hg with the lobe type scavage pumps and 10-12 hg with the old tech gear pump

Jerry

Jerry

I have been running/building dry sumped setups since 1972---I have never seen or heard of a tank draining into the engine to find its own level---if it were to do that--it would have to pass thru the oil pump( highly unlikely) pass thru the lines to filters/coolers ( again unlikely with only a few inches of head pressure) and then have to go thru the engines oil galleys/bearings,Etc.

On Can-Am cars and some Formula Atlantic and some of the newer GT cars you have to pay attention to your route of the hose so the oil doesn't leak out of the tank thru the pump and into the motor..... it has happened.......

If the system is blowing oil out the top of the tank, the breather/separater system/method is inadequet

All of the guy's running in Nascar and SCCA on road race tracks find the level of their Dry Sump tanks ...it is common and is different on each car...... depending on the tank and type of car and tracks it's going to run on ...... Your comment on inadequet breathing is wrong.....

With a current tech dry sump pump a vacume pump is unnessary as it is possible to pull over 20 Hg with the lobe type scavage pumps and 10-12 hg with the old tech gear pump

Not all pumps will pull a vacuum especially in FE motors ....we have tested 3 different types and they will not pull a vacuum in a FE motor..... or I should say they won't pull enough vacuum to do anything.....

Breathing or Venting of the large motors has turned out to be the best way to go......and we have over 4.5"inches of breathing on our motors..... and they make very good HP....

Morris

Morris

My comment about the venting is not wrong--the problem is where the vent is located--in an application like yours and the ones you mentioned that use a lot of aero devices--the pressure balance over/around the vehicle will pull the oil out---thats why your stated about 1/2 BELOW the baffles works---

EVEN IN AN FE engine you can pull a vacume in the pan---the pan doesn't know what kind of engine its on--if you can't pull a vacume with a decent modern pump, you haven't got your engine sealed up

The last engine I have numbers on pulled over 20 HG all the way to 9500 rpm and was making 1370 HP. It was a pump will the lobed gears--the same type package with the older geared pumps pulled steadily over 10 HG at about the same rpm/hp numbers----

If you can't pull the vacume instead of trying another pump, fix the engine.

It has happened----yep _ _ it happens!!!

Jerry