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914World.com _ 914World Garage _ Vacuum line question

Posted by: 74ravenna May 30 2015, 10:19 AM

Its been a while since I started replacing the vacuum lines on my 74 1.8.
So now that I'm back at it I'm wondering if I have the section from the air filter (upper part of throttle body?) to the Y then down to the Aux Air Regulator done correctly.

Why is there a metal sleeve before the auxiliary air regulator? Why not one piece of hose from the Y down to the Regulator?

When I look online at Peter Klager's layout, his diagram does not show that metal sleeve.

Did a prior owner do this or is this correct from the factory?

Posted by: type47 May 30 2015, 12:05 PM

If I'm not mistaken, there is a rubber elbow used there. 022.129.637 from the PET
Attached Image
Or possibly 021.129.639 could be used

Posted by: 74ravenna May 30 2015, 02:14 PM

QUOTE(type47 @ May 30 2015, 02:05 PM)

If I'm not mistaken, there is a rubber elbow used there. 022.129.639 from the PET
Attached Image

Or possibly 021.129.639 could be used
Attached Image

Wow! You're so right. I have to admit of my blunder here. I have two elbows on the way from another forumite and totally forgot.
Thats a little scary.

Thanks.
Steve

Posted by: boxsterfan May 30 2015, 11:32 PM

Early 1974 1.8L vacuum hose layout:

http://bowlsby.net/914/Classic/zTN_FI_Hose_Vac_1.8L_Early1974.jpg

Late 1974+ 1.8L vacuum hose layout:

http://bowlsby.net/914/Classic/zTN_FI_Hose_Vac_1.8L_Late1974-75.jpg