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Registered
Join Date: Jun 2009
Location: Wilmington, DE
Posts: 1,277
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Tap case for SSI install?
Just getting around to fitting everything up and there are these two tabs on the SSI's that look like they call to be bolted down but there's no holes tapped in the case to bolt them down. Did I miss something along the lines of install research? I don't recall ever reading that someone had to tap the case to install SSI's. If so, are the 6 or 8mm?
Thanks 
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1983 SC - sold 2002 996 C4S - sold 1968 912 |
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05-10-2010, 09:39 AM
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Information Junky
Join Date: Mar 2001
Location: an island, upper left coast, USA
Posts: 73,167
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Weird that those case flanges aren't already drilled & tapped.
go for it. edit: I expect that it's a 6mm.
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Everyone you meet knows something you don't. - - - and a whole bunch of crap that is wrong. Disclaimer: the above was 2¢ worth. More information is available as my professional opinion, which is provided for an exorbitant fee. 
Last edited by island911; 05-10-2010 at 09:49 AM.. |
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05-10-2010, 09:46 AM
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Band.
Join Date: Dec 2003
Location: Denver, CO
Posts: 13,347
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I think there's usually a short M6 stud right there, and you put a nut and a lock washer on it.
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1983 SC Coupe 1963 BMW R60/2 1972 Triumph Tiger 1995 Triumph Daytona SuperIII Last edited by Gogar; 05-10-2010 at 10:17 AM.. |
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05-10-2010, 10:11 AM
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Go Speedracer, go!
Join Date: Aug 2002
Location: Indianapolis
Posts: 1,951
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Mine had a tapped hole there already (not a stud). That is strange. M6 sounds correct.
Come to think of it, I had to re-drill the tab on the SSIs because the hole didn't line up with the case.
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1981 SC ROW Coupe |
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05-10-2010, 10:18 AM
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East Coast R Gruppe
Join Date: Sep 2007
Location: Philly Area
Posts: 461
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Mickey,
projected finish date?
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OGRP3 RGRPNE |
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05-10-2010, 10:21 AM
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Moderator
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Don't bother, they aren't necessary.
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Bill Verburg '76 Carrera 3.6RS(nee C3/hotrod), '95 993RS/CS(clone) | Pelican Home |Rennlist Wheels |Rennlist Brakes | |
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05-10-2010, 10:21 AM
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My '86 3.2 has no hole or stud either. I was also wondering if I should drill and tap for the SSI's.
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Ed 1973.5 T |
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05-10-2010, 10:23 AM
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Better in Person
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mine did not line up well enough to use so i left em empty. not much there to warrent drilling into the case i reckon.
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78SC PRC Spec911 (sold 12/15) https://www.youtube.com/watch?v=f7I6HCCKrVQ Now gone: 03 996TT/75 slicklid 3.oL carb'd hotrod 15 Rubicon JK/07.5 LMM Duramax 4x/86 Ski Nautique Correct Craft |
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05-10-2010, 10:27 AM
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Registered
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If you want those to line up you need to slacken the barrel nuts on the pipes to the heads get those bolts installed and tighten everything up. I had the same issue, however I'm that guy that can't stand missing nuts and bolts so I went back in a fixed it. I doubt as mentioned above that they actually do anything however.
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2021 Model Y 2005 Cayenne Turbo 2012 Panamera 4S 1980 911 SC 1999 996 Cab |
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05-10-2010, 10:41 AM
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Registered
Join Date: Jun 2009
Location: Wilmington, DE
Posts: 1,277
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I guess I'll leave them alone. The area is very accessible so I can do it later if there it too much vibration.
Hoping to have it back in by the weekend. Replacing Vacuum lines and CIS stuff today and tomorrow and I should be good to go. 
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05-10-2010, 10:42 AM
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Registered
Join Date: Apr 2005
Location: Co. Carlow, Ireland
Posts: 455
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My '84 didn't have bolt holes for them either. I just left the tabs blowing in the breeze - no problems so far.
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Charles '84 911 3.2 |
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05-10-2010, 11:16 AM
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grateful user
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I drilled and tapped mine. Being such a big expence, I think it is good insurance againt vibrating any welds loose and having a rattle.
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fully disassembled, blasted, customized and restored 75 targa with factory hard top, 993 style turbo ft fenders, steel flares, C2 bumpers and rockers, 82 3.0 sc 9.5/1 engine with PMS flywheel, 964 cams, flowed heads, ssi's short geared 915 w/lsd, polybronze, bilstein,working lambda, modified and highly tuned cis, tensioners, pop valve, backdated exhaust and heater, 2300 lbs. no bolt left untouched. 1970 911E. Nice car but needs a re-do. |
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05-10-2010, 11:48 AM
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Registered
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mine weren't drilled either...
i didnt use them... Quote:
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83 SC Targa -- 3.2SS, GT2-108 Dougherty Cams, 9.5:1 JE Pistons, Supertec Studs, PMO ITB's, MS2 EFI, SSI's, Recurved Dizzy, MSD, Backdated Dansk Sport Stainless 2 in 1 out, Elephant Polybronze, Turbo Tie Rods, Bilstein HD's, Hollow 21-27 TBs, Optima Redtop 34R, Griffiths-ZIMS AC, Seine Shifter, Elephant Racing Oil Cooling. |
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05-10-2010, 12:11 PM
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Registered
Join Date: Nov 2003
Location: The Netherlands
Posts: 201
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I drilled and tapped them and put in M6 studs... Fit is perfect due to being able to do the drilling after a trail fit of the SSI's
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'82 911 SC |
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05-10-2010, 01:19 PM
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1976 Porsche Carrera 3.0
1995 Porsche 993 Carrera Coupe
The Other Woman
the 23 car
domino
1985.5 Porsche 944 2.5L Supercharged 
911 SC
Panamera
75 Porsche 911
bike
1970 porsche E
