Dry sump leakdown prevention? |
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Dry sump leakdown prevention? |
gnomefabtech |
Mar 25 2024, 11:02 AM
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#1
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Member Group: Members Posts: 111 Joined: 27-December 22 From: Los Angeles Member No.: 27,063 Region Association: None |
Hello!
So I'm running a dry-sump system on my 'teen and it's all great except if the car sits for a few days the oil in the tank slowly fills the motor. This wouldn't be a big deal except it floods the turbo and then there's smoke. So much smoke. Does anyone have experience using a low cracking pressure check valve to hold the oil in the tank until the car is running? I see a selection of these on McMaster but I'm understandably nervous about restricting the flow into the engine from the tank. It's a -12 an line coming out of the tank. What did Porsche do about this on their dry-sump systems? I'm running a Hayabusa engine (build thread to follow) so it's a pretty unconventional build but the oiling thing is common to all dry-sumps. Thanks for answering these questions. |
technicalninja |
Mar 28 2024, 01:28 PM
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#2
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Senior Member Group: Members Posts: 1,286 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
What pressure pump is the Hayabusa engine using? Is it worn to the point where oil is getting past the gears into the “sump” The dry-sump system I am using is a hybrid that uses the stock high pressure pump and adds a two stage scavenge to empty the sump. Since the 'Busa oil pump was never designed to stop flow when stopped it doesn't. This wouldn't be a problem except that my turbo is mounted a bit low so it gets flooded with oil when there's a lot of drainback. Here's a pic of the engine before it went in. I'll start another thread with more details. There are a LOT of details. I want to hear that run! (IMG:style_emoticons/default/thisthreadisworthlesswithoutpics.gif) Scratch pics and add audio soundtrack! |
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