Anyone have photos of a -6 oil tank that's been cut open?... |
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Anyone have photos of a -6 oil tank that's been cut open?... |
Detroit |
Jul 13 2024, 12:00 PM
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#1
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Member Group: Members Posts: 70 Joined: 28-December 16 From: Detroit metro area Member No.: 20,709 Region Association: Upper MidWest |
So, I've just rebuilt a 911SC motor to put into my car. It's mounted in a start cart, and to cut a long story short, it has no oil pressure due to no oil coming out of the tank.
It sounds like a kazoo if I blow into that fitting, but I cannot suck anything out of it. I'd have thought that that fitting would open straight into the volume of the tank, but maybe there's a pipe in there that's collapsed?... Anyway, I'd like to understand exactly what it looks like there before doing anything drastic... This is, incidentally, a factory -6 tank. Thanks very much in advance! @mb911 Ben, I'm tagging you, because I figure if anyone on this site has cut a tank open, it'd be you... |
Detroit |
Jul 13 2024, 04:51 PM
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#2
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Member Group: Members Posts: 70 Joined: 28-December 16 From: Detroit metro area Member No.: 20,709 Region Association: Upper MidWest |
My interpretation of that schematic is this.
The safety valve is there to prevent over pressurization of the system. Pressure gets too high, the valve opens and dumps the oil to the crankcase. The problem with that is inconsistent oil pressure as the engine will momentarily see "no" oil pressure. The second valve modulates the oil pressure. When it opens some of the pressure escapes back to the tank, but some of it is going to the suction side of the pressure pump alleviating the drop on the pressure side... If you sent it all back to the tank it'd be no different than dumping into the case. |
Lo-Fi Version | Time is now: 20th September 2024 - 05:51 PM |
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