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Location: Spring, TX
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Source or Borrow Splined Tool for Trans. Mainshaft Peened Bolt

I am looking for the source for the tool or if someone has the tool that would let me borrow it. I am willing to supply a deposit on said tool.

This is the tool that is splined to match the front end of the main shaft for the 915 transmission that safely holds it to loosen the peened bolt that holds on 3rd and 4th gear sets and synchros.

Alternative someone with a thrashed 5th/Reverse hub that I can put in a vise for the same process.

I live in Spring, TX - Houston suburb.

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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-26-2025, 10:17 AM
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This piece:

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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-26-2025, 10:21 AM
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john walker's workshop's Avatar
 
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Impact wrench.
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Old 11-26-2025, 11:04 AM
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Or make your own tool. Easy to do if you have an old clutch disk to sacrifice.

Mark
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Old 11-26-2025, 12:24 PM
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Quote:
Originally Posted by john walker's workshop View Post
Impact wrench.
I know to get that first peened bolt off. I am talking about the second one further down the shaft that holds third and forth gear on.
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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-26-2025, 06:50 PM
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unfortunately I don't have an old clutch disk.
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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-26-2025, 06:51 PM
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I had a batch of these made for my shop. I’ll sell one if you’d like.


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Old 11-28-2025, 11:05 AM
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tool

i like to buy one please.
Old 11-28-2025, 09:23 PM
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Quote:
Originally Posted by JackkTheMackk View Post
I had a batch of these made for my shop. I’ll sell one if you’d like.


Absolutely!! I responded in DM's
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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-29-2025, 10:35 AM
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Other options:

https://forums.pelicanparts.com/porsche-911-technical-forum/746264-915-tool.html
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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-29-2025, 11:33 AM
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It's the reason why I save old clutch discs...
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Old 11-29-2025, 01:21 PM
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Quote:
Originally Posted by yelcab1 View Post
It's the reason why I save old clutch discs...
Agreed. However I don't have a supply and the current clutch is fine.
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1977 911S - high mileage and a bit rough but mostly original. Soon to become a bit of a hot rod.
Old 11-29-2025, 02:43 PM
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Anybody having an old clutch disc they don’t want?
Old 11-29-2025, 08:56 PM
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Ken Wunsche
 
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P355a

The 901/914 transmission uses a 1st/rev shift sleeve guide similar to the 5th/rev guide on a 915 transmission except the shaft is smaller. The splines fit the 915 mainshaft just like the P355a. Picture from a 915 rebuild thread by Gordo.
Old 11-29-2025, 10:29 PM
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Jack hooked me up with one of his P355 tools and it's spot on. I was using an old clutch disc but it was really torquing the skinny side of the shaft. I'm sure someone will chime in that it's fine and I won't argue. Just giving a thumbs up to Jack's remake of an NLA tool.

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Old 11-30-2025, 07:41 AM
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