Help identifying a hose I need please.. :)

[damiarosyrn 911]

Hello everyone ......Im hoping I could ask a small question here so I can identify a hose I cant seem to correctly categorize....Ive been chasing a problem and probably a vacuum related but I found this hose was not even connected when I put the cis system back together....I need a new one it does have a cut in it making it questionable anyway...but.....:::
this hose connects to the center port that lays in the back of the engine in the very middle and on the top...the hose then loops around the passenger side and connects to the oil tank, it is one of two pieces. The hose connects to the bottom port on the oil tank.....Sorry for the vague descriptions.

Damian

[damiarosyrn 911]

vehicle: 1983 911sc...3.0

[porschyard]

On an 83 SC the hose assy that attaches to the lower port is the crank case vent hose and on 80-83 they are 2 piece. The hose in the back is 930 107 394 10
and the hose at the tank is 930 107 394 09.
If you have PET go to 83 SC Illustration 104-00 Position # 35A and 35B

Richard

[yelcab1]

Here you go. Line 35 or 35A, and 35B

[damiarosyrn 911]

Thank u!!!....looks like 35a...but mine has more curves to it ..maybe the pics aren't perfect either.
Do you think our host has this hose?

[damiarosyrn 911]

Do you know what category this falls into I'd like to see where it hooks up to on the engine side

[yelcab1]

It's been many years since an SC lived in my garage... I believe this is where it goes

[Flat6pac]

If you order the Carrera hose, it’s one piece and will trim to fit at the intake. Both SC and Carrera have air restrictors called for in the hose so the motor doesn’t stall when opening the oil cap. Your old one is sufficient, install it too.
930 207 385 01
Bruce

[damiarosyrn 911]

Thanks for responses....this is the 1 of 2 hoses which goes down to the engine base- intake in the center and attaches to a bracket with a port. Once again sorry for the vague descriptions, i cant find either the intake bracket or hose in the parts diagrams...I have found the correct diagram yet...
Damianh

[stevie 77 930]

Here is a view of the 2 hoses:
Top hose vents for the top of the oil tank to CIS boot part # 930.107.399.00

Bottom hose vents from the engine to the oil tank lower fitting
This hose is part of a 2 piece section as already discussed
Part shown in my pic is 35A # 930 107.394 10
the additional hose is part 35B # 930.107.394.09 (not shown in this pic, but connects to oil tank)
the connector is part 35C # 930.110.267.04

[damiarosyrn 911]

Yes thank you all ... I searched that first part number and it looks quite different than in the picture schematic ...thank you

[damiarosyrn 911]

I know this is dumb question but you guys know.... If this hose bus or is just totally not connected will it cause the engine to run different or is it just a breather for the oil tank?

[proporsche]

also make sure you will have the air restrictor in it part number 93010728900-

Ivan

[PeteKz]

Originally Posted by damiarosyrn 911

I know this is dumb question but you guys know.... If this hose bus or is just totally not connected will it cause the engine to run different or is it just a breather for the oil tank?

It is a breather for the oil tank. However, on the SC, it plugs into the rubber boot on top of the CIS, so you must plug the hole in that boot, or the engine will run poorly. Alternatively, you can run the breather hose from the oil filler neck to a fitting on the airbox on the right side that was originally used for the breather hose on the early CIS models. That is upstream from the air metering unit, so it will not affect engine running.

[damiarosyrn 911]

Thank u Stevie , Richard and everyone!!!
Exactly wat I needed... everyone here is so helpful...
Damian