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1967 frankenporsch
 
Join Date: Jul 2002
Location: puerto rico
Posts: 1,487
Installing a 915 on a 69 912

Hi,

Any tip / advice on how to install a 915 on a 1969my 912 ?

Thanks in advance.

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1967 normale
Old 01-11-2020, 05:48 PM
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1967 frankenporsch
 
Join Date: Jul 2002
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I need to know which pressure plate I have to use.
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1967 normale
Old 01-11-2020, 05:49 PM
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You have a push clutch, so the only 915 that will relate to that is a 76 912e one. May still have some t/o bearing interface issues, never tried it.
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Old 01-11-2020, 06:03 PM
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cycling has-been
 
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Quote:
Originally Posted by john walker's workshop View Post
You have a push clutch, so the only 915 that will relate to that is a 76 912e one. May still have some t/o bearing interface issues, never tried it.
And even with that, the 923 trans from the 912E will not work with 915 running gear. You need a VW input shaft and clutch/flywheel package for 215 mm components.

Bill K
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Old 01-13-2020, 12:21 PM
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The 912e trans has a vw size mainshaft.
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Old 01-13-2020, 03:18 PM
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1967 frankenporsch
 
Join Date: Jul 2002
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Hi again.
I explained to my customer all the pro’s and con’s for doing that and now we are back in the market for a 1969 5speed 901.
Thanks.
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1967 normale
Old 01-14-2020, 09:23 AM
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There is a rebuilt 901/13 in the classifieds right now. Correct with 6:29 CWP.

Worth a look.
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Old 01-14-2020, 09:49 AM
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I believe I have a 69 912 transmission. I can check when I get back to the shop
Old 01-14-2020, 09:53 AM
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gearhead
 
Join Date: Nov 2007
Location: Loverland, CO
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Quote:
Originally Posted by jpnovak View Post
There is a rebuilt 901/13 in the classifieds right now. Correct with 6:29 CWP.

Worth a look.
Im going to assume the reason his client thinks he wants a 915 is they are adding power and need strength. The 6:29 (stock for a 69 912, but not stock for the 901/13) is weaker than the standard 7:31. Porsche used them for hill climbing and rally back in period and would toss them after one race weekend. I would be looking for just a plain stock 901/13 and then strengthen it with a new bearing plate and side cover.

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Old 01-15-2020, 05:13 AM
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