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kodioneill's Avatar
 
Join Date: Feb 2007
Location: upstate new york
Posts: 3,188
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removing injectors

Did a search, I could not find how to remove the fuel injectors from a 930 intake. Any help would be welcome. I do not want to force them. I have a lot of experience on normally aspirated engines but not turbos.

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1974 sahara beige 911 targa
1982 chiffon 911sc
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Old 01-04-2011, 08:26 AM
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stevie 77 930's Avatar
 
Join Date: Jan 2008
Location: Chatsworth, CA
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Injectors for a 930 are screwed into the blocks. You'll need 2 wrenches, one to hold the injector (i think its a 12mm and 14mm) and another to un-do the injector line first. Be sure and use brake-line wrenches to prevent rounding off the corners on the injector; they are a little soft. Once the line is seperated from the injector, the injector screws out of the block. These can be pretty tough to get off, so i would try a little pentrating oil first. not a whole lot of room to do this when the engine is in the car. Good luck
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1983 911SC
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Old 01-04-2011, 08:45 AM
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Crotchety Old Bastard
 
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Join Date: Jan 2000
Location: Huntsville, AL
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You need 2 wrenches as Steve stated, a 12mm and a 17mm.
The driver's side, specifically cyl #1, is not accessible unless you remove the large rubber hoses from the air meter assembly to the turbo down pipe.
It is advisable to remove the fuel lines completely before you remove the injectors. If the fuel lines are not removed they must be bent back out of the way to remove the injectors. If they are bent there is increased likelihood that the ferruled line will not re-seat and will leak.
Unscrew the injectors and pull them straight out. Be careful not to lose the copper washer under each injector.
If re-using the copper washers take care to note top and bottom. They are a squish fit and conform to the injector.
Do not over-tighten. These fittings are soft seat and will distort if over-tightened resulting in a fuel leak. The copper washers below the injectors will also distort and leak.
Once the new injectors are in and the lines back on you may wish to test for leaks by running the pumps with the engine off. This will also purge air out of the lines. I do this because it is such a PITA to put everything back on only to discover a seeping or leaking injector.

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RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 01-04-2011, 09:29 AM
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