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Join Date: May 2011
Posts: 8
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915 transmission question
I own a 1977 911s with a non functioning transmission. I purchased a 1975 915 transmission and now getting ready to install. Will the helper spring setup on the 77 work on the 75 transmission? If so what will I need to do make fit?
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05-17-2011, 06:43 AM
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What are you planning to do with the mechanical/electrical speedo problem?
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Keep the Shiny Side UP! Pete Z. |
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05-17-2011, 07:04 AM
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The plan will be to convert over to a mechanical speedo.
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05-17-2011, 07:14 AM
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Join Date: Mar 2001
Location: Marysville Wa.
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to use the horseshoe spring setup, swap the vertical shaft from the '77, along with the pivot pin bracket on the side cover. have fun running that speedo cable thru the tunnel.
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https://www.instagram.com/johnwalker8704 8009 103rd pl ne Marysville Wa 98270 206 637 4071 |
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05-17-2011, 07:23 AM
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Location: Portland Oregon
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You'll need to use the '75 clutch cable and arm.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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05-17-2011, 07:24 AM
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Any insight into the best way of snaking in the mechanical speedo cable?
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05-17-2011, 07:45 AM
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Quote:
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Keep the Shiny Side UP! Pete Z. |
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05-17-2011, 08:11 AM
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Is there an adapter avaiable to change the mechanical ouput to an electronic signal?
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05-17-2011, 08:32 AM
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Location: Portland Oregon
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Quote:
 AFAIK, there are no adapters to generate the electronic signal from the mechanical one. If it were my car, I'd repair the '77 transmission as thats really the best long-term option.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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05-17-2011, 08:45 AM
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Steve: HI!
tjs4300: Where are you in the country? What died in your '77 trans? I can fix it, SW can fix it, JW can fix it...if you're on the left coast.
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Keep the Shiny Side UP! Pete Z. |
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05-17-2011, 08:55 AM
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I live in Wisconsin.
I can't put the current transmission into first gear the remaining gears are fine. I took the inspection cover off and sincro teeth fell out. The 75 transmission came up and thought I would swap out. |
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05-17-2011, 09:07 AM
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Quote:
Check this out as well; http://porsche.wikidot.com/ Click on "915" under "page tags" and you will find my 9-part 915 repair Tutorial.
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Keep the Shiny Side UP! Pete Z. Last edited by Peter Zimmermann; 05-17-2011 at 09:12 AM.. |
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05-17-2011, 09:10 AM
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The odometers says 110,000 miles. Not sure if I'm equiped to crack this case open and try to fix it.
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05-17-2011, 09:21 AM
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Quote:
With that mileage, always fix what you have!
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Keep the Shiny Side UP! Pete Z. Last edited by Peter Zimmermann; 05-17-2011 at 09:58 AM.. |
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05-17-2011, 09:26 AM
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