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Join Date: Dec 2006
Location: Chalfont, PA
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Basic question....how do you return the oil?

Hey,
Just a random question for the 930 owners out there: How do you return the oil coming out of the turbo to the tank with the turbo mounted so low?

Thanks,
Pat
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'74 911 options delete no sunroof. lowered, swaybars, tie bar, braided brake lines, corner balanced, "s" gauges, 993tt seats, Momo wheel and knob, 993 mirrors, blacked out window trim, H4's, short gearing, S pistons, stand alone EFI, other stuff.
Old 01-12-2008, 06:59 PM
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Trough aux pump driven by left camshaft.
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Old 01-12-2008, 07:03 PM
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An aftermarket solution is to buy an electric pump.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
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Old 01-13-2008, 03:30 AM
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Another aftermarket solution is to route the oil back into the crankcase at the lowest point, which is at the oil drump sump plug. Others have drained the oil back into the left side lower valve cover. OEM solution is as BeepBeep noted above.
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Old 01-13-2008, 03:32 PM
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I Think powerhaus makes a nasty scavange pump that mounts in the stock location, made out of billet aluminum uses has a VW 1.8T oil pump.
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Old 01-13-2008, 07:42 PM
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Not everyone here was successful with draining the turbo into the case, they tried several locations. Do a search.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 01-14-2008, 12:09 PM
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Quote:
Originally Posted by NathanUK View Post
Not everyone here was successful with draining the turbo into the case, they tried several locations. Do a search.
Agreed, do a search, use my name. I am the poster boy for poor oil draining. I ended up with a catch can and Tilton trans pump.
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Old 01-14-2008, 06:11 PM
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As long as the turbo is mounted high enough to be higher than the lowest point of the timing housing that drains back into the crankcase then valve cover or timing cover gravity drain will work. If the turbos are lower than that a pump either electric or mechanical is required. I have twin turbos and mounted my turbos higher than the usual methods in order to use gravity drains. But there is a deal of fabrication and oil tank relocation required.
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Old 01-14-2008, 10:24 PM
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Hmmm.. my setup locates the GT35R in the same location as any normal KKK on a 930 turbo. I'm draining into the sump drain plug successfully... no oil backing into the turbo and no smoking etc...
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Merv
'89 911 Turbo Cab
Protomotive MAP ECU, Twin Plugged Heads, GT2-EVO CAMs, 3.3L fully finned P&C's, ARP fasteners, C2T head gaskets, Titanium Retainers, Turbo spec valves, springs & guides, 964 splash valves, GT35R BB turbo, GSF Stainless Headers, Magnaflow Exhaust, Full bay Intercooler, TiAL 46mm w/gate, TiAL 50mm BOV, Apexi AVC-R EBC, SPEC Stage3+ Clutch kit, Crane CDI Ignition
Old 01-15-2008, 03:49 PM
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my T-4 GT-37R was too big to go in the stock location, so like an idiot I made a 90 degree elbow and clocked the turbo away from the motor. What I didnt take into account was the fact that the flange is on a downward angle, so my elbow just made the turbo sit lower. I had major drain issues and leaking after shutdown- I fixed the problem with a spring loaded check valve in the top of the turbo with a -4 AN line going to it (the stock Porsche oil feed is too much for a ball bearing turbo)
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Old 01-15-2008, 10:58 PM
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