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Electric Scavenge Pump Mounting
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-Jayson 1976 911S Signature Edition - 3.2SSt (JE 98mm 9.5:1 pistons, 964 Cams, ARP Rod Bolts, Big Port SC Heads, 3.2 Carrera Manifold, ID725's, B&B Headers, TS HyperGate45 Gen V, TS RacePort, BW S360, AEM Infinity 506, E85) IG: Signature_911 |
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Don't have an answer, but also interested in mounted location, as well as any new suggestions for routing of the turbo drain hose.
Are you dumping down into a modified oil sump plate? |
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-Jayson 1976 911S Signature Edition - 3.2SSt (JE 98mm 9.5:1 pistons, 964 Cams, ARP Rod Bolts, Big Port SC Heads, 3.2 Carrera Manifold, ID725's, B&B Headers, TS HyperGate45 Gen V, TS RacePort, BW S360, AEM Infinity 506, E85) IG: Signature_911 |
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Join Date: Feb 2008
Location: Marietta GA
Posts: 2,571
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What about repurposing a rear fuel pump bracket (assuming you don't have a fuel pump there)?
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Join Date: Oct 2012
Location: Peoria, Arizona and Big Rock, IL
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Supertec sold me a used Tilton differential pump. I mounted it next to the fuel pump bracket, above the torsion tube. It's plumbed with -10 hard lines on the engine to a T fitting then braided -10 up the pump. It pumps into the the breather on top of the engine through a -8. Been driving daily for a few weeks with no problems. Seems loud in the garage but no prob on the road.
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07 911 Turbo - Pilot Sport Cup 2 ZP 96 Carrera 4 - Toyo R888r 73 911E - Hoosier R6 + twin 75's 92 Corvette - Nitto NT01 14 BMW X3 - Pilot Sport A/S 3+ |
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Also, did not see the tilton pump location. Am interested in the function of the "T". However, am easily confused these days. Could you circle the turbo and the pump, or sketch out the plumbing circuit? Thanks. |
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Join Date: Oct 2012
Location: Peoria, Arizona and Big Rock, IL
Posts: 243
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Sorry was afraid that might happen.
The pump is on the vertical wall that forms the back seat rest. There is a nice flat surface to mount your pump above the torsion tube. Above the fuel pump bracket. There's room on both the left and right sides of the car. My plumbing in the photo is for two turbos. I don't have any kind of drip can or vent. I thought those -10 (5/8) pipes would hold plenty of drips. Also thought I would try it without any venting. You can find other threads discussing vents and drip tanks. I made that sump plate with two -10 fittings. It's a stock steel plate with the steel fittings welded on. Used it for gravity drain for a few years but the turbos would collect oil if the car sat for a few weeks. No problems now. In the photo the hose on the sump is for a second electric pump that makes oil pressure before the engine is started.
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07 911 Turbo - Pilot Sport Cup 2 ZP 96 Carrera 4 - Toyo R888r 73 911E - Hoosier R6 + twin 75's 92 Corvette - Nitto NT01 14 BMW X3 - Pilot Sport A/S 3+ Last edited by Mike Billings; 09-15-2017 at 04:01 PM.. |
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Join Date: Sep 2005
Location: Iowa, USA
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Here is how I mounted mine (sorry this is the best picture I can find).
I have a TurboWerx electric pump. I mounted it to a plate and used two "U" bolt style exhaust clamps which I clamped to the torsion tube - on the right hand side of the gearbox. It has worked flawlessly for the past few years. The weld you can see on the torsion tube is from where I installed a G50 center section. ![]()
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RSR Replica - http://forums.pelicanparts.com/porsche-911-technical-forum/472762-rsr-update.html 930 Cab - ex-IA car, 3.4L, 1.2 bar, G50 996 Turbo - X50. Last edited by motley911; 09-16-2017 at 07:19 AM.. |
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Mike, OK, got it. Thanks. |
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And being that my car began life as a 2.7, there is no provision for a rear fuel pump or the associated mounting brackets ![]()
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-Jayson 1976 911S Signature Edition - 3.2SSt (JE 98mm 9.5:1 pistons, 964 Cams, ARP Rod Bolts, Big Port SC Heads, 3.2 Carrera Manifold, ID725's, B&B Headers, TS HyperGate45 Gen V, TS RacePort, BW S360, AEM Infinity 506, E85) IG: Signature_911 Last edited by '76 911S 3.0; 09-22-2017 at 05:05 PM.. |
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I'm missing something, what is the advenatage of an electrically driven scavenge pump as opposed to the mechanically driven pump?
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Join Date: Sep 2005
Location: Iowa, USA
Posts: 352
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For the electric pump mount - I mounted the pump to a 1/8" plate and then had to determine the center line of the exhaust clamps, relative to the pump, to get it to fit. One advantage of the turbowerx pump is that it can run in any position - so I was able to rotate the pump relative to the torsion tube to make it fit. I will have a look to see if I have anymore pictures that may show it a little better.
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RSR Replica - http://forums.pelicanparts.com/porsche-911-technical-forum/472762-rsr-update.html 930 Cab - ex-IA car, 3.4L, 1.2 bar, G50 996 Turbo - X50. |
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Join Date: Sep 2005
Location: Iowa, USA
Posts: 352
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PROS Oil flow capacity - For my original application (twin journal bearing turbos) - the 930 cam driven pump could not keep up with the oil flow through the turbos at idle and the oil would overflow into the exhaust turbine housing creating a lot of smoke. Mounting - if you don't have 930 cam shafts, mounting a 930 pump is a little difficult (need to drill the cams). Ability to scavenge oil after shutdown / before starting - on my set up the electric scavenge pump runs for a few minutes after shutdown to prevent oil build up and smoke on start-up. CONS Noisy - you can certainly hear the pump running while driving Electrical - you need to wire the pump into the electrical system. Although the turbowerx pumps are pretty robust and can run dry, if you leave the ignition on, without the car running the pump will run (naturally you could wire it so that it only runs when the engine is running but that is even more complexity) Complexity - after 4 years of running the turbowerx pump has been bulletproof. But compared to the cam driven pump there are a lot more things (electric motor, fuses, wiring, relays, timers etc) that can go wrong and ruin your weekend.
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RSR Replica - http://forums.pelicanparts.com/porsche-911-technical-forum/472762-rsr-update.html 930 Cab - ex-IA car, 3.4L, 1.2 bar, G50 996 Turbo - X50. |
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I went through several stages with my turbo oil return starting with passive sump drainage, then a Tilton pump mounted in the left wheel well, and finally a cam driven pump. The Tilton was definitely noisy and I worried about electrical failure and road debris damage. The electric pump is definitely a challenge to mount, wire, and plumb. I think the sump solution is actually more robust in the long run and if you really want active scavenging, cam driven pump is the way to go especially if you go EFI as it gives you the simplest cam signal solution.
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Steve Sapere aude 1983 3.4L 911SC turbo. Sold |
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Join Date: Dec 2013
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dry turbo shaft
hi friend
i am having a problem with my electronic scavenge solution. i lost two turbo lately and my turbo guy said its because the pump is to strong and its drying out the journal bearing in idle. and the oil has been suck from the shaft to soon can it be? and how can i solve it? ![]() ![]() |
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Brando
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I have a Carrera intake and I’ve made a little bracket to atttach the pump to the top of that and pump into the breather cover. It works well and there is lots of room there.
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Turbo powa! 1977 911s. it's cool |
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Join Date: Feb 2009
Location: Knoxville, TN
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I just gravity drain into the sump and have never had any problems.
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1979 911SC widebody conversion. 3.1 engine, 3.2 liter heads, carrera intake, Microsquirt V3 ECU, K27 7200 High flow turbo, Tial F41 wastegate, Evo X intercooler, Ford EDIS. .7 bar. 402hp 360tq |
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