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The car is performing well. I've made several cross country's in it and drive it two or three times a week with no leaks or issues.
I purchased a LM-1 and adjusted the mixture(what a great tool!). It was running very rich after reassembly as expected. Good luck on your disassembly and feel free to PM or reply to this thread if I can help in any way. Mark
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1981 911SC Sunroof Coupe 2005 Volvo XC-90 2.5T Vans RV-8 Experimental Aircraft |
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05-27-2006, 07:02 PM
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Stranger on the Internet
Join Date: Apr 2004
Location: Bradenton, FL
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Can't wait to get this apart...
I don't see much sense in building a new turbo engine and feeding it fuel with this mess.    Mark-Thanks for the documentation. I hope this turns out as well as yours did. Pat
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Patrick E. Keefe 78 SC |
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05-28-2006, 09:47 AM
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MAGA
Join Date: May 2004
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Pat, are you going to have to glue your pop valve shut to keep it from opening under boost? Just curious, as I am going to turbo my 3.0 also someday.
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German autos: '79 911 SC, '87 951, '03 330i, '08 Cayenne, '13 Cayenne 0% Liberal Men do not quit playing because they get old.... They get old because they quit playing. |
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05-28-2006, 01:15 PM
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Stranger on the Internet
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Tim:
I don't want to hijack Marks thread, and get it way off topic, so I refer you here... BAE Turbo Install, Part 1 New questions of the day are going to be there in a minute Pat
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Patrick E. Keefe 78 SC |
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05-28-2006, 01:44 PM
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Ferdinand Magazine
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Mark; what a great thread and well done on a superb job. The gum and varnish unleaded generates in spotlessly clean fuel systems (when the motor sits around for any length of time) never ceases to amaze me, never mind rust on top of that. If pump gas can fill my lawnmower's float bowl with brown crud over one winter, what has it done to my 911's CIS in 23 of them...
I have a very helpful Bosch supplier near me here in the UK so will try hunt down a part number for a rebuild kit and see whether I can order one. If not will follow your advice on rebuilding before we go to Classic Le Mans in July. We also have a very good injector overhaul guy nearby, so will ask his advice on the subject of rebuilding FWIW. Rookie of the year no question!
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Sheriff at www.impactbumpers.com Brand support at classicretrofit.com/tuthillporsche.com 1976 Porsche 911 Carrera 3.0: 'The Orange' - 1981 924 Turbo - 1983 944 Lux - Too many BMW motorcycles |
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05-29-2006, 01:39 AM
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Somatic Negative Optimist
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John:
The big problem has always been that Rebuild Kits were not really available. If you have a way of finding a supplier that will sell a kit that includes the thin metal diaphragm, please, let us know.
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1980 Carrerarized SC with SS 3.2, LSD & Extras. SOLD! 1995 seafoam-green 993 C2, LSD, Sport seats.  Abstract Darwin Ipso Facto: "Life is evolutionary random and has no meaning as evidenced by 7 Billion paranoid talking monkeys with super-inflated egos and matching vanity worshipping illusionary Gods and Saviors ". 
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05-29-2006, 05:30 AM
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Great thread Mark. Congrats on a fine experiment gone WELL!
Question: Did you end up thinning the High Tach? Or straight from the jar? Thanks, Paul
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If you aint breakin' it, you aint racing it hard enough! 1974 911 3.0 Euro Sahara Beige/Black |
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06-25-2006, 07:19 PM
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Paul,
I thinned the High Tack with laquer thinner about 1:1. Thanks, Mark
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1981 911SC Sunroof Coupe 2005 Volvo XC-90 2.5T Vans RV-8 Experimental Aircraft |
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06-26-2006, 04:41 AM
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Cool. Thanks for the info. Where should I send the checks for all the money I'll be saving???
JK... I'm not alowed to have sharp objects such as pens, etc... Paul
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If you aint breakin' it, you aint racing it hard enough! 1974 911 3.0 Euro Sahara Beige/Black |
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06-26-2006, 09:57 AM
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FASTLAP
Join Date: Jul 2007
Location: Sunny Cali
Posts: 100
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o-rings
did you reuse any o-rings, or purchase new, and if purchased do you now the exact sizes?
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1987 911 3.5L 1987 924S 2005 Audi A6 Quattro 2003 Cooper S |
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04-24-2008, 01:50 PM
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It's been several years since the rebuild and so far it has held up very well......no leaks! I used new o-rings all of which came from a 'generic o-ring kit'. These assortment are commonly available from parts suppliers and bearing supply houses. Sorry I can't be more specific.
Mark
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1981 911SC Sunroof Coupe 2005 Volvo XC-90 2.5T Vans RV-8 Experimental Aircraft |
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04-24-2008, 06:13 PM
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Stranger on the Internet
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OK, I am now sufficiently inspired. I'm off to the garage to pull my spare FD apart!
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Patrick E. Keefe 78 SC |
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06-13-2008, 04:24 PM
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Stranger on the Internet
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Well, after pulling mine apart, I realize it is about 10 times cleaner than Marks was. Just a little junk in it. The piston has a few scratches, which I will try to polish out tomorrow; I have some old 800 wet/dry which is great for that when I use it in the parts washer. The little filters don't want to come out (one fell out, the rest are stuck, but I blew carb cleaner through them and they flow OK).
The slots all appear to be clear, and the same size, from what I could tell by holding it up to a light. Most of the O-rings are disintegrated, so I'll find some new ones tomorrow. I took some photos, which I will post for posterity, along with the reassembly. These really are remarkably simple yet clever devices. Pat
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Patrick E. Keefe 78 SC |
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06-13-2008, 05:40 PM
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Mark, did you ever post your simple procedure for cleaning injectors?
Anyone come up with a source for rebuild kits?
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Bill Miller 81 Targa Guards Red 3.6, M&K 1 out, S4 brakes 83 ROW CAB Rubinrot Metallic (RIP) |
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06-17-2008, 10:26 AM
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Reviving an old thread.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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01-05-2011, 01:28 PM
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chime
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pca 30 year member,1977 porsche turbo body targa 56 vw ragtop oval 01 harley sportster 18 Chevy Colorado diesel BIG RED Firetruck and assorted v-dub ,porsche parts hoarder..LoL |
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09-17-2011, 08:26 AM
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Tired Member
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Added to my list of projects...
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Glenn Daily Driver - '78 911SC RoW Endurance Racer - '85.1 944 Street/Track Project - '86 951 Race Project - 944 Spec |
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06-20-2012, 12:41 PM
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Black and Blue
Join Date: Jul 2000
Location: Austin, TX USA - Ya'll
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what a great read... I have studied it 4 times and I just want to say thanks to Grezdlitn for posting all the pics. This has been a great help as I'm currently rebuilding an FD due to a frozen plunger from a 76' 2.7 litre. The 2.7 FD is a bit different than the 81SC FD in this thread, but not enough to justify another post. Thanks again...5 star thread IMO
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Kemo 1978 911 SC Non-Sunroof Coupe, two tone Primer Black and SWEPCO Blue, Currently serving as a Track Whore 1981 911 SC Sunroof Coupe, Pacific Blue Project, Future Daily Driver |
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09-06-2012, 10:01 AM
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PhD on Pending Projects
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With two CIS cars...I know this thread will come handy. To the subscribed list!
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Drive safe! 1967 - Porsche 912 1981 - Porsche 911 SC 1991 - Porsche 911 C4 Wide-body Cabriolet |
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09-06-2012, 10:57 AM
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Mark, I know that this is an old thread but would you have taken any closeup pictures of your primary pressure regulator valve when you had the fuel distributor apart?
I just replaced the O rings in my 3.0 liters Fuel distributor the two larger O rings were19 mm X 2 mm the 6 smaller Orings were 7 mm X 2 mm and the two O rings on the air flow meter pivot were 11 mm X 2 MM Lorne M.
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83 SC Last edited by LM3929; 09-13-2012 at 08:39 PM.. Reason: more info |
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09-06-2012, 12:37 PM
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1971 Porsche 911T
1983 Porsche 944 Lux
The Orange
The Varmint
ME 262 (SOLD)
Colibri
Gas Mizer
Mileage King
Dog Bus
"The Porsche"
Endurance Racer
944 Spec "The green car"
Scalded Cheetah?
BlueFire
1974 RSR Tribute
Vrooom
Franchesca
Luigi
Oldie
