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Garrison's Avatar
 
Join Date: Apr 2006
Location: Denver
Posts: 729
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installing muffler

So I purchased a Borla muffler for my 930. Keeps the stock look for now, but when I removed the factory muffler from the turbo, the turbo only has 2 studs and then it had 2 bolts....

I guess I have 2 questions.

1. Should the turbo have 4 studs that I would simply put nuts onto, or is this common that it has some studs and some bolts?

2. Any tips and tricks on how to install an aftermarket muffler on the car. Seems like there is NO clearance at all to get tools in there, and barely any to get my skinny hands in there. I am thinking that the rear bumper has to come off, but am looking for options before I go this route.

Any help would be great.

Thanks.

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1996 Porsche 911
2013 BMW 335xi - Wifes car
2007 4Runner - 4x4 for Colorado snow
Past: 1988 Venetian Blue 911 Targa, 1983 Black 930, 1984 Black 911 Coupe
Old 02-18-2009, 05:54 PM
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beancounter
 
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Join Date: Jan 2008
Location: Weehawken, NJ
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Take the bumper off...some of the nuts are hard to get to even with the bumper off. I have found that crow's feet are very helpful.

My turbo has 4 studs with nuts...that's what the factory diagrams show too.
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Jacob
Current: 1983 911 GT4 Race Car / 1999 Spec Miata / 2000 MB SL500 / 1998 MB E300TD / 1998 BMW R1100RT / 2016 KTM Duke 690
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Old 02-18-2009, 07:07 PM
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Crotchety Old Bastard
 
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Your 930 is an '83 so it should have a separate waste gate muffler.
You will need to take off at least the valance if not the bumper to remove the stock muffler. It is easiest to just remove everything if you have never done this before.
Yes you should have 4 studs and no bolts. The studs like to rust to the nuts and back out when removed which is likely what happened at some time in the past.
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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 02-18-2009, 07:31 PM
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Join Date: Oct 2006
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You can do it with just removing the valance, I did several times, once without even removing the valance. Use one of the SNAP-ON "C" wrenches on the two upper nuts, if you don't have one, a stubby works, but it much harder on leverage.
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Tim
1986 930
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Old 02-19-2009, 11:01 AM
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I got my OE off / RarlyL8 dual-out on with just removing the valance, was real easy...

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Paul... CT | '87 930 | '08 M3 6gang vert |
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Old 02-19-2009, 11:12 AM
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