Rare NOS part, 91461313410 |
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Rare NOS part, 91461313410 |
IronHillRestorations |
Oct 28 2021, 07:25 AM
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#1
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I. I. R. C. Group: Members Posts: 6,735 Joined: 18-March 03 From: West TN Member No.: 439 Region Association: None |
I’ve been holding onto this for the right project. #2178 is the worthy recipient of this NOS ventilation control.
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L-Jet914 |
Oct 28 2021, 06:43 PM
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#2
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Member Group: Members Posts: 254 Joined: 24-October 12 From: Davis, CA Member No.: 15,080 Region Association: Northern California |
Interesting that even the NOS late ventilation control doesn't have a ball detent to match the dentents on the controls so it doesn't overshoot each fan speed position, but the earlier ones as pictured have a detent clip to match the detents on the control assembly. I wonder if someone could recreate that brass/metal detent clip from the early controls so those of us with the late model controls could rivet it in. See marked sections in the photos. I don't know why they did away with that piece.
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rgalla9146 |
Oct 28 2021, 09:21 PM
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#3
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Advanced Member Group: Members Posts: 4,579 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Interesting that even the NOS late ventilation control doesn't have a ball detent to match the dentents on the controls so it doesn't overshoot each fan speed position, but the earlier ones as pictured have a detent clip to match the detents on the control assembly. I wonder if someone could recreate that brass/metal detent clip from the early controls so those of us with the late model controls could rivet it in. See marked sections in the photos. I don't know why they did away with that piece. very interesting. When I took the early piece out to get the pics I operated the top slider and felt that the last detent had much greater 'feel'..... the first two had barely any. I don't know why that is. I'll find out. This is why all used units have melted boards between the three contact strips for fan speed. I've disassembled these in the past to restore and agree that a strong leaf spring, lubed proper size ball and lubed cables will provide greatly improved detent action and increased contact life. |
L-Jet914 |
Oct 29 2021, 10:03 PM
Post
#4
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Member Group: Members Posts: 254 Joined: 24-October 12 From: Davis, CA Member No.: 15,080 Region Association: Northern California |
Interesting that even the NOS late ventilation control doesn't have a ball detent to match the dentents on the controls so it doesn't overshoot each fan speed position, but the earlier ones as pictured have a detent clip to match the detents on the control assembly. I wonder if someone could recreate that brass/metal detent clip from the early controls so those of us with the late model controls could rivet it in. See marked sections in the photos. I don't know why they did away with that piece. very interesting. When I took the early piece out to get the pics I operated the top slider and felt that the last detent had much greater 'feel'..... the first two had barely any. I don't know why that is. I'll find out. This is why all used units have melted boards between the three contact strips for fan speed. I've disassembled these in the past to restore and agree that a strong leaf spring, lubed proper size ball and lubed cables will provide greatly improved detent action and increased contact life. What I don't get is why Porsche did away with the ball detent from the earlier ventilation controls on the later models and keep the detents molded into the controls, unless it was their way of cost cutting. |
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