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Smart quod bastardus
 
fredmeister's Avatar
 
Join Date: Oct 2002
Location: Baltimore, MD, USA
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better pcv system

Is there any benefit to running the later years (86-89) turbo PCV breather set up in my 79 930?

I noticed that Porsche installed a breather/separator type canister in the engine breather system back to the oil tank after 1986, and wondered if this was a worthy upgrade to my 79 930 which has just the hose straight back to the oil tank.
I am experiencing some oil smoke upon start up only after hard track driving, and wondered if this was the cause.
I have posted this issue on this forum before and noone has responded with any comments, so please guys someone must have knowledge on this.
I would really appreciate any advice or leads.
Old 05-30-2007, 02:08 PM
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Smart quod bastardus
 
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bump.......anyone?
Old 05-31-2007, 01:06 PM
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It has to help eliminate oil from being sucked in.
That has to be a good thing
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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.

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Last edited by NathanUK; 06-01-2007 at 12:25 PM..
Old 06-01-2007, 10:18 AM
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Smart quod bastardus
 
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Join Date: Oct 2002
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Bump again.....
I wanted to elaborate more on my question:
After a track session for 20-30 minutes of high boost driving at a DE, I really notice the smoking upon startup. Basically the car smokes very badly at idle until about 3-4 minutes pass beofre it clears out.
Plus I use alot of oil, probably on the order of 1 quart every 40 track miles which to me is ridicul;ously excessive.
Can anyone say that the pcv system as designed in the earlier cars before the addition of the separator in the 86 models is the main culprit of all these oil in the intake manifold? Are turbos more susceptible to blow by issues than N/A cars, especially when run hard under high boost for extended times like a track event?
The car runs fine otherwise and does not burn such amounts of oil in street driving.....that is what perplexes me now.
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1979 930 Turbo....3.4L, 7.5to1 comp, SC cams, B&B intercooler, Snow Perf water/meth injection, Rarlyl8 headers, Garret GTX turbo, 36mm ported intakes, Innovate Auxbox/LM-1, custom Manually Adjustable wastegate housing (0.8-1.1bar),--running 0.7bar max
---"When you're racing it's life! Anything else either before or after, is just waiting"
Old 06-04-2007, 01:38 PM
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