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Looking to Turbo my SC

Hello! My name's Rei and have been the owner of a 1982 911SC for about 6 months now. I love how the car drives and the looks of it but I would prefer to have more hp by ways of either turboing or supercharging. Ive researched around the forums for a while and wanted opinions on what I should do.
I found locally the complete stock 3.3 turbo system including the intercooler, So far in the forums ive seen a lot of talk about the turbos and the ignition but not a whole lot about the fuel. Ive read about fuel injections but I don't want to go that route, I basically want to attempt this turbo conversion the "simplest" way possible.
What are the most common methods you guys have seen/used to add more fuel to compensate for the added boost ? Im not planning on any crazy hp numbers, I just want power numbers compared to the BAE kit. What did BAE use for fueling?
I have also read about a 1980s supercharger kit that relied on the CIS to compensate for more fuel. is that true?
This is my first post on here and im pretty sure this has been covered numerous times but I just cannot find the specific information on this.
Thanks in advance!
Old 12-17-2012, 11:02 AM
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There have been several posts over the years of people turbo'fying non-turbo engines. It can be done, but generally you're limited to a lower amount of boost because of the higher compression your engine has vs. a low compression 930.

As to fueling, your SC uses CIS fueling, correct? In the 930, fuel delivery when on boost is governed by the warm up regulator, one specifically designed with a boost port/nipple which responds to boost pressure and lowers the control pressure = richer mixture.

Beside all the other stuff like getting the plumbing to all line up (intercooler with intake, exhaust system with turbo and drip tank, and waste gate), sounds pretty straightforward huh?
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Old 12-17-2012, 01:49 PM
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The kit im interested in has all the plumbing, exhaust, turbo, wastegate etc. Mark my WUR has a vaccum nipple, does that mean i can use it just like that? Or i have to purchase a 930 WUR? Thanks Mark!
Old 12-17-2012, 03:35 PM
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I used a 930 intake and 930 components to do my conversion to my SC engine. Pretty easy to do.
Good Luck
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Old 12-17-2012, 06:28 PM
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930 intake and which other components did you use? tomorrow im picking up the turbo system and the guy also has other 930 parts.
Old 12-17-2012, 08:12 PM
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I think you're better off starting with a 930, seems like a lot of work to me.
Old 12-17-2012, 08:12 PM
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930 fuel head attached to the intake with WUR attached to it, and the fuel lines and injectors. Don't really need the diverter system instead use the 964 elbow and a diverter valve from this(simple) and intercooler of your choice. Should have the throttlebody as well, call it the whole 930 intake/fuel system/induction system including intake manifold.
With this, you can have a really simple albeit scary with your compression. Get a light weight boost spring to control boost low and it's a weekend job or quicker. Have fun
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Old 12-17-2012, 08:27 PM
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Quote:
Originally Posted by Tt surgeon View Post
I think you're better off starting with a 930, seems like a lot of work to me.
Actually it isn't, essentially intake and exhaust swap. But an engine swap would be faster.

If you want to keep the price down, use all stock 930 parts. Intake 3ldz heat exchangers jpipe intercooler waste gate and muffler. I did spend a little more and went with 993 HEs, m&k crossover with dual Tial wastegates, k7200, mk muffler, 965 intercooler but used stock air box.
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----Nothing is far away in this car!----
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-2008 550i M-Sport
Old 12-18-2012, 04:06 AM
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Turbo SC

I would sell the SC and just buy a 930.

You have to consider, suspension modifications, brakes etc etc
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Old 12-18-2012, 05:53 AM
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The reason why i want to keep it its because the car is in excellent condition. The engine had an overhaul done to it and it only has like 1500 miles on it, for a total of 120k miles on the car. Also its a Weissach edition 911.
So today im going to pick up the turbo system and to see which other 930 parts he has, from what ive read from the posts besides the turbo, piping, wastegate, exhaust and intercooler i need the following 930 parts: 930 intake manifold, 930 fuel distributor with the air meter, 930 injectors and 930 thottlebody?
By the way thanks everybody for all the help, ill post some pics later on.
Old 12-18-2012, 09:09 AM
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I think the turbo needs a specific pressure from the fuel pump? And the 930 uses two pumps but I don't think you need them both with lower boost that you need to run. I only run one as my afr is fine with one at .8 bar.
Keep everything to return it back to stock in the future. I believe there will be a time that these cars might be worth more stock and more collectable. I'm outta luck with this but mine is not as collectable and I'm sure it won't be in my collection once it's more collectable. Mine is a franken slut so I'm not as concerned about mine but it's not a Weissach edition either.
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Old 12-18-2012, 09:17 AM
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From what ive read i only need one right? My goal i only about .5 bar.
Old 12-18-2012, 09:36 AM
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Old 12-18-2012, 09:37 AM
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Old 12-18-2012, 09:40 AM
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The sc fuel pump flows plenty for low boost. You can upgrade to a Bosch 044 to be safe.
Old 12-18-2012, 10:17 AM
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Oh and you also want the 930 wur with the rest of the fuel parts. Source a complete 930 cis.
Old 12-18-2012, 10:18 AM
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Ok guys so I picked up some parts from the guy I was talking about before. Picked up 930 heat exchangers, exhaust piping, exhaust, wastegate, intercooler, and turbo. From what ive read on the forums and the BAE manual the stock CIS on the Sc can handle up to .5 bar so im going to go that route to see how it goes. Basically like the BAE kit with the exception of an intercooler.
Old 12-19-2012, 11:34 PM
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What do you guys think?
Old 12-19-2012, 11:35 PM
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Old 12-19-2012, 11:36 PM
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That is an interesting project. I have read about it many times but I don't recall ever seeing ti done with an old K26. That is a huge turbo for what you are trying to do. But, I am gonna keep my eyes peeled cause I am a sucker for seeing people make reality what other say is impossible.
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Old 12-20-2012, 12:49 AM
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