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964 turbo 1991 headlights height regulator
After checking with no result the forum on this, I would like to know if any of you can show me the exact location, in the engine, of the source of depression that is actuating the regulator of the headlight height in the '91 964 turbo.
TIA aldo |
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09-22-2016, 08:00 AM
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Huh? I don't follow you at all....and my guess is nobody else does either....can you clarify?
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Brandon '91 911 Turbo '87 325i Convertible '16 Audi Allroad Denver, CO |
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09-23-2016, 01:08 PM
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'91 964 turbo headlights height can be modified by the little four position knob(911 631 231 00) between the left air vent and the light knob on the dash.
The headlight units are actuated by pneumatic actuators (911 631 223 00) operated by the depression taken from the engine through a little pipe. The little pipe is connected from one side to the knob and the other to the engine (probably from the manifold?). The PET image doesn't show from where the little pipe comes... Does any of you the "exact" location of the connection of the little pipe to the engine? Thank you very much, aldo 
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09-23-2016, 10:06 PM
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Is nobody able to give me an answer?
Help me, please... :-) aldo |
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09-28-2016, 02:05 AM
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Just read there is a y in the vacuum (depression) line for the resonance flap that goes to the headlight adj. Hopes this helps Aldo
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09-28-2016, 06:20 AM
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Thank you very much!
Do you mean this one? aldo 
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09-28-2016, 08:54 AM
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I think so my car is a C2 and doesn't have the headlight adjustment feature. But looks like what I read
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09-28-2016, 08:57 AM
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Thanks again!
aldo |
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09-28-2016, 11:09 AM
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I might not have given you the right info I was thinking of a non turbo 964.
Sei Italiano Aldo? |
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09-28-2016, 04:39 PM
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Si, sono italiano... :-)
And yes, I have a 964 turbo, but I guess that your suggestion drove me to the right place in the PET... Can anybody confirm that? aldo |
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09-28-2016, 08:56 PM
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I lived in Napoli for about 2 years about 35 years ago. Sorry my Italian is almost gone from my brain. I will send you a private message
John |
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09-29-2016, 05:09 AM
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I suspect that Aldo's car has the "slant" nose option, which would have pop up headlamps. I have never seen a 964 with the slant option. It might be an aftermarket kit.
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Dave 2014 Cayman S (Awesome car!) 1991 911 Carerra (Semi Refined fun) 1986 911 Carrerra (Raw fun) sold 2001 Boxster S (Refined fun) sold |
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10-02-2016, 02:57 AM
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Luckily no... :-)
It is a regular '91 964 turbo, with the regular knob with four position adjusting from the dash the heigth of the headlight beam.. |
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10-02-2016, 06:19 AM
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Glad to hear it is not a slant. I was never a fan of those cars.
I am also glad to learn of a turbo option (adjustable headlamps) that I had not heard of before. Good luck in your search for the issue.
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Dave 2014 Cayman S (Awesome car!) 1991 911 Carerra (Semi Refined fun) 1986 911 Carrerra (Raw fun) sold 2001 Boxster S (Refined fun) sold |
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10-02-2016, 09:42 AM
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EDIT: Never mind
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Terry Last edited by TMc993; 10-02-2016 at 01:41 PM.. |
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10-02-2016, 11:08 AM
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I'm Italian and I live in Italy.
My 964 turbo is a ROW model, obviously. The adjusting knob wasn't an optional, in Europe, but a regular item. Actually the ROW model hadn't many optional (x33 apart). The only optional item in my 964 turbo were colored Porsche wheelcaps. aldo |
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10-02-2016, 01:12 PM
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