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Banned
Join Date: Dec 2011
Posts: 730
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930 engine endplay acceptable range
HI
I am doing 930 engine convert to my 73 911, when I attach my 915 trans to my new 930/68 engine and testing clutch work function, I hear a sound from crank, so what is endplay acceptable range? Need your input. Many thanks! TIEN |
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11-22-2012, 04:56 AM
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Registered
Join Date: Apr 2010
Location: Houston, Tx
Posts: 951
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according to Wayne's book and Bentley, crank shaft axial clearance = 0.110 - 0.195 mm. Or 0.0043 to 0.0076 inches.
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"Simplicity is supreme excellence" - James Watt |
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11-22-2012, 11:04 AM
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Banned
Join Date: Dec 2011
Posts: 730
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I check my endplay today, it is about almost 1mm. I think I need to open it to check it up does anyone know why my crank shaft axial clearance will so big? which parts should I check or replace first?
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12-01-2012, 05:35 AM
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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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One will not know anything definitive until its apart & measured, but it sounds like thrust bearing wear.
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Steve Weiner Rennsport Systems Portland Oregon (503) 244-0990 porsche@rennsportsystems.com www.rennsportsystems.com |
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12-01-2012, 08:27 AM
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Registered
Join Date: Jun 2003
Location: Camarillo, Ca.
Posts: 2,418
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Some early 3.0 liters and 3.3s had issues with High wear on the thrust surface of the crank. I am not sure how the issue came about or how many engines were affected. this issue was early on around 1978. I have not heard of one so late having the issue unless the crank was replaced with an earlier unit.
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Aaron.  F.S. 1965 Solex engine w carbs/cleanerBurnham Performance https://www.instagram.com/burnhamperformance/ |
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12-01-2012, 12:21 PM
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