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Old 02-23-2012, 04:54 PM   #14
SPB racer
Join Date: Feb 2011
Location: San Antonio TX
Posts: 252
Originally Posted by ppbon View Post
... including my own, I am convinced that the Boxster NEEDS an Accusump system, especially when using sticky tires.
It doesn't matter whether you have the oil pan extension or the Motorsport AOS or the X-51 Baffles in the sump or anything other than an Accusump or a dry sump system.
The oil will creep up the sides of the sump and the pump will suck air.
One or two, or three laps like this won't kill the engine, but you do 3 or 4 20 minute sessions and the damage you're doing to the engine is unquestionable.
Take a look at my latest video and watch the gauges in the middle.
The right gauge is the engine's oil pressure.
The left gauge is the Accusump's pressure.
The center gauge is oil temp.
At 4:33 into the video the engine oil pressure sender's wire broke and you'll see the right gauge at zero. The left gauge (Accusump) still shows it's working.

If it weren't for the Accusump at every high-speed turn the engine's oil pressure would drop to zero, even though the RPMs are at 6-7K.
With the Accusump you see that as soon as the engine's oil pressure drops below 35 psi, the Accusump opens it's release valve and kicks up the engine's pressure. - YouTube

Happy Boxstering,
Pedro, I would suggest that there was something wrong with the engine's oil pressure gauge long before it failed. Is that what you normally see? I also have an oil pressure gauge that I can see in my video and I have never seen it dropping under brakes (let alone around right hand corners) the way yours does. It doesn't appear as if the car is pushing particularily hard and yet any movement away from dead flat and the pressure drops - and that's with an accusump!

If that was typical I doubt these motors would last five minutes. I would be interested to see your next video after you make repairs to the wiring and (might I suggest) you swap the inputs to the two gauges to see if the response is still the same. I am taking it as a given that the oil level was correct. Just for the record, where did you attach your oil pressure sender?
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