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voitureltd voitureltd is offline
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Join Date: Feb 2008
Location: Bayside Wi
Posts: 2,760
Originally Posted by RarlyL8 View Post
930 engines from '78-'88 are mounted about 1" farther back than 911 engines 74-86. The reason is the 915 tranny in the 911 is 1" shorter in the bellhousing area than the 930 4spd.
Some funny remarks but Rarly8, JFAirman and the mechanic are right. In 1978 the 930 motor was moved to the rear 30MM by lengthening the bellhousing which made the car more tail heavy than the 77 and prior 930. He was tongue in cheek referring to the fact it was a newer than a 1977 930. To use a 78 or newer 930 transaxle in a 77 or prior 930 or in a 911built prior to sometime in the mid 80s you must shorten the bellhousing and mainshaft by 30MM, or find a original 75-77 short bellhousing and mainshaft ( good luck ) although I just found one although a few years too late. One reason the short bellhousing transaxles are expensive and in short supply. A few years ago I went thru this with a 1979 911 SC ( same engine location in chassis as 75-77 930 ) in which we used a 88 930 motor and 930 4 spd. Had to get the mainshaft and bellhousing machined 30mm shorter to get it bolted in the original location. So yes the 78 and later 930 Motors are mounted 30mm further to the rear of the car.
Anthony @ Voitureltd Bayside WI.

Last edited by voitureltd; 05-03-2013 at 06:02 AM..
Old 05-02-2013, 05:23 PM
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