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Matt Monson Matt Monson is online now
Join Date: Nov 2007
Location: Loverland, CO
Posts: 18,298
Originally Posted by clutch-monkey View Post
what exactly is weak about the 915- as in, if the 930 4 speed is ostensibly a 915 casing with 4 beefed up gears inside, what parts were beefed up in the change over?
A 915 and 930 2nd gear side by side.

930 ring and pinion is also much larger and the bearing on the ring gear side it larger and stronger to prevent deflection. A common feature of all aftermarket sidecovers is every one of us upgrades it to the 930 size bearing.

1974 911 Restorod
1974 914 Bumble Bee
2004 40 Jahre
2008 Cayman S Mule
Old 10-30-2014, 07:11 AM
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