Braden996

I was taking a highway on ramp at roughly 80kmh (a curved Canadian one, not the weird strait ones in the US) and I noticed my pressure gage jump around from 2.5-4.5 bar while taking the bend.

I thought with the dry sump oil system the pressure would remain constant throughout twists and turns?

Maybe this has always happened, but I just noticed it yesterday...

100plus

How much did you pay for the deep sump kit? In other words, do you think it works?

Braden996

$0

I actually thought these cars ran on a dry sump system. I guess i was miss informed haha woops

Dharn55

The older air-cooled engines were true dry sump systems. Since the M96 engine was introduced it is not really a dry sump system. M96 engines have been known to have oil starvation in extreme cornering, particularly on the track. There is a scavenger oil pump in each head, however on the left side of the car it is located toward the front of the car and on the right side toward the rear of the car. I think it is on right hand turns, where centrifugal force pushes the oil to the outside rear of the engine that the starvation is most severe. On the X51 engines an additional oil tube was added to address this issue, along with a deeper sump.

You can add the deeper sump on non-X51 engines.

On the new 9A1 engines there are four scavenger oil pumps, one in each corner.

Barn996

Don't mean to steal this thread.Have you dteremined what your problem is Doug?

Dharn55

Well I have a lot of problems, but none with my car right now. Were you thinking of something else that I need to work on

Braden996

ahhhh that makes sense. I was accelerating hard and the bend was to the right. Thanks!

Torontoworker

If you corner hard enough on one of our 270 degree right hand ramps you can watch the oil pressure drop very low and the harder you enter the turn and how long you maintain the G's - can uncover the oil inlet if your near the oil add level.

Tbred911

2.5 is too low even in a tight corner... I bet you can still squeeze another 1/2 quart of oil into your engine... anything below 3 bar is dangerous... I don't know if a deep sump kit will help with that... an X51 pan will certainly help... many combine both deep sump + x51 pan for extra security but if you do one only do the x51 pan as it has the baffles to ward off oil starvation... but that assuming you have FULL oil level in your car... very important here.

ltusler

For hard cornering and track use, you do not want your oil level to be full/full. That can lead to fogging on startup .

Braden996

Yeah I dont really do any tracking. Just like taking on-ramps fast. Im changing the oil tomorrow morning anyway so Ill make sure Im not too low

Barn996

I thought your wife was driving your cab and had a problem recently...

Tbred911

that's not true... I run cup sport tires on 18" rims and I always run full oil.... you want to be full *especially* if your tracking to prevent any starvation.

I've never had smoking and always been running full oil.

have u seen any smoke @ full oil level?