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Dutch924-racer · Joined: 23 Jul 2007 Posts: 1081 Location: The Netherlands

The GTS has a crankcase breather on the valve cover. Does anybody know what Porsche did with the breather on the side of the block ?

http://cdn6.vierenzestig.nl/wp-content/uploads/2014/12/924-gts-clubsport-6882.jpg?379f39

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937 trackday car
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knobby · Joined: 23 May 2011 Posts: 43 Location: Cincinnati,Ohio

Although both cars have the breather outlet in a slightly different location it would seem to me that they are venting the valve cover via an AOS and dumping into the inlet although I cant make out exactly where in the inlet wether its going to the intake air filter box (as on my 1981 931 S2)or what.
That said I would like to know why and how that affects the turbo oil drain vent which goes to the side of the cylinder head in the valve chamber?
Is this a mod which could benefit all 931's?
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81 RED 931 S2(daily driver),81 WHITE 931 S2(not currently drivable).
Cincinnati,Ohio

Grenadiers · Posted: Sun Feb 01, 2015 8:58 am Post subject:

You have been on this quest for awhile now!! Doing some searching, haven't seen any definitive answers for you.

http://www.924board.org/viewtopic.php?t=38872&highlight=924+gts
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'83 944 Track car.
'88 924S Track car.
'89 944 Turbo
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2012 Jeep Wrangler
2014 Kia Soul
2001 Ford F350 powerstroke

pcelenta · Joined: 16 Feb 2007 Posts: 546 Location: long island,ny

which white GTS is that in the photo? is it chassis number 001? or 93A0150562? I know it is not 011 because that one had a TMIC.

Harm · Joined: 02 Apr 2009 Posts: 1376 Location: Holland

GTS chassis 001, engine bay (back in 2006)

Source: http://www.finecars.cc/en/detail/car/4756/index.html

pcelenta · Joined: 16 Feb 2007 Posts: 546 Location: long island,ny

Harm...you are the best! looks like photos taken at springbok...oh...and do you know which is parked right next to it??? 93A0150562! the GTS prototype!

mark911rsr · Joined: 11 Feb 2015 Posts: 1 Location: Aberystwyth UK

I can shed some light on this for you.

On my GTS , the crankcase breather has been capped off , as has the lower inlet to the breather 'canister' , as you can just about see in these pictures ( it's not the easiest position to get a decent photo ! )

My car was dry- sumped at the factory , hence no requirement for a breather on the crankcase as the scavenge pump pulls it back into the tank.

However I guess on the non dry sump cars , there would be a hose between these 2 outlets.

Hope this helps
Cheers
Mark

leadfoot · Posted: Sat Feb 14, 2015 9:27 am Post subject:

nice1 thanks for sharing this...
Stu
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1981 ROW 924 Turbo -
carbon fiber GT mish mash
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