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'78 SC Turbo Conversion Begins

After about 3 years of sourcing parts, I finally decided to pull the trigger and start the turbo conversion process on my 3.0. (Decided to turbo my car because Jacob won't sell me his ;-) I am keeping it simple, using mostly all 930 parts with a few upgrades; turbo, M&K exhaust, etc. Keeping boost low at this time.

Engine is out, and starting to bolt the parts on. As I am going I do have a few questions.


First Issue, I mounted the 930 oil supply line, but now when I put the oil pressure sensor back in, it will not tighten, is the sensor or the screw it threads into stripped?

Pics and starting dyno chart to follow....
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport

Last edited by jcc911; 04-23-2011 at 08:51 AM..
Old 04-23-2011, 07:14 AM
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How do you plan to lower the base compression, extra head gaskets...?
Old 04-24-2011, 06:07 AM
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Stock compression is ~8.5:1 and the heads are ported for twin plug which I was told also will lower the compression, but not sure if that is true or by how much (I am guessing it is negligible).
The application will be low boost, 0.4 bar so I would not have to lower the C/R.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 04-24-2011, 11:24 AM
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CIS, SSIs and M&K Gen 5. has been removed. 965 Intake studs added, oil supply line and 993 HEs mounted.

Getting ready to add the scavenge pump and the M&K Turbo "Y" pipe.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 04-24-2011, 11:25 AM
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 04-27-2011, 03:30 AM
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 04-27-2011, 03:32 AM
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Subscribed.....keep us up to date
Also do you have a list of the parts you collected together for the conversion?

Cheers
Old 04-27-2011, 09:36 AM
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I actually do. I kept a spreadsheet of all of the items I sourced ..... and unfortuanately thier cost.
I may have items left over due to chages in build plans.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 04-27-2011, 10:04 AM
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Great, can you post a copy of the list on here or maybe email me a copy please.
gavinc69@hotmail.com
Keep the pics coming its looking good
Old 04-28-2011, 10:23 AM
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Sure I will send you an email tonight. Hopefully will be posting more pics soon as well.
Old 04-28-2011, 10:30 AM
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Still have quite a bit to do but couldn't resist test fitting the Intercooler!




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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-01-2011, 10:28 AM
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RSR rocker seals installed, and the 993 HEs are back on
Added a new idiot light sender as the threads were pretty worn on the old one.

Just waitin for the addition of the WG flanges to the M&K Y pipe and then the real excitement will begin!
(and more pics will follow)
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-07-2011, 03:56 PM
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Will the car need two fuel pumps, like a regular 930?
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1983 911 3.3L Turbo(YES, I know the turbo badge is on the right...had to be different!)
1996 Toyota Corolla(der 'clapper')
Old 05-08-2011, 09:08 AM
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No, according to Ben at M&K, the stock SC will flow enough. If not I will switch to a Bosch 044 which has been proven to have sufficient flow.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-08-2011, 09:57 AM
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For those watching and contemplating doing the same, The throttle linkage plate on the rear of the engine for the SC is different than the one used for the 930. Luckily I had a 930 plate so I will swap them out. Otherwise you will have to make adjustments to get the throttle linkage of the 930 CIS to meet the arm on the linkage plate.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport

Last edited by jcc911; 05-09-2011 at 05:28 PM..
Old 05-09-2011, 03:02 PM
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Ok so I mounted the 930 linkage plate and as expected, lost that inch on the linkage rod from the plate to the transmission. Any ideas?
Old 05-09-2011, 04:39 PM
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I think it would be easier to make up a linkage from the plate to the throttle body than from the plate to the tranny you can get linkage stuff from summit racing
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Old 05-09-2011, 05:27 PM
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As you can see the differences in pic, the 930 plate is on the right.

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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-09-2011, 05:31 PM
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I will have to check out summit, thanks.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-09-2011, 05:32 PM
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Any idea where they would be listed?
I may also see if the linkage off the SC CIS would work.
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Jeremy C.
Why's he calling me meat? I'm the one driving a Porsche. (Bull Durham)
----Nothing is far away in this car!----
-1978 911 SC TURBO, Minerva Blue Targa 965 update.
-2008 550i M-Sport
Old 05-09-2011, 05:35 PM
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