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jamesjedi's Avatar
 
Join Date: Aug 2004
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Cam Tower - Rocket Arm Shaft Journal

Hi,

Hoping for some guidance. I may have had one of my rocker arm shafts overnightened. What are the specs for the journals? Or can they be checked by using new shafts and assessing the fit?

Thanks
James
Old 03-19-2019, 06:35 PM
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Check the fit with a good shaft. Usually itís hard to over tighten, most times you will crack the shaft ends when doing that.


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Twinplug, head work, case savers, rockers arms, etc.
Old 03-20-2019, 10:32 AM
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Thanks Craig. I will check it as you mention.

I may buy new shafts. The shafts look like they have been exposed to moisture, however they do not have any scoring.
Old 03-20-2019, 10:57 AM
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From the '84-'87 911/930 spec book

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Old 03-21-2019, 10:04 AM
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I just replaced two shafts (along with valve stem seals). I used a torque wrench on the 5mm bold and held the 8mm with an allen wrench until the 8mm stopped turning.

Serge
Old 03-21-2019, 10:38 AM
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I use 180 inch lbs. and a 1/4" drive clicker torque wrench.
Old 03-27-2019, 03:30 PM
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Ed - is just about any clicker 1/4" drive ratchet going to a) have its head fit into the big open space, and b) have a handle long enough that you can get the torque?
Old 03-27-2019, 03:34 PM
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I appreciate the additional information. Thanks.
Old 03-27-2019, 03:35 PM
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Quote:
Originally Posted by Walt Fricke View Post
Ed - is just about any clicker 1/4" drive ratchet going to a) have its head fit into the big open space, and b) have a handle long enough that you can get the torque?
I use a Snap-On torque wrench Walt, fits just fine. Length is plenty to get the leverage required.
Old 03-27-2019, 03:57 PM
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