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SC cams mod on a 930 motor?
I am rebuilding my stock 1980 930 engine. I was going to just rebuld it back stock but I was wondering if I will regret not installing SC cams. I want to keep the stock CIS and fuel delivery system for now (due to budget).
Are the SC cams with stock CIS worth it from a noticable low end performance upgrade? (I do have a k27 with a 1 bar spring as well.) Can you tune the CIS system enough to accept the SC cam? (fuel/air delivery, etc..) Stay stock or upgrade to SC cams? Thanks
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Millhaus |
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12-13-2009, 11:17 AM
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Hi Millhaus,
I am going the same route now. I have been recommended to go for SC cams in my 930. This will be noticable low end performance and drop around 5500 rpm as I understand. There is alot of threads here explaining this. |
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12-13-2009, 01:39 PM
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Try this link. I documented this process when I did it a year or so ago.
The change to SC cams is well worth doing.
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Bill 1988 Carrera - 3.6 engine with ITBs, COPs, MS3X 2024 Macan S Day job ... www.jesfab.com.au Memories: '68 912, '72 911T, '80 911SC, '84 911, '85 930, '86 930, '87 911, '21 Macan S |
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12-13-2009, 02:43 PM
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Try not, Do or Do not
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I have always thought the SC cams
were the best bang for the buck when it comes to stock 930 updates.
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Henry Schmidt SUPERTEC PERFORMANCE Ph: 760-728-3062 Email: supertec1@earthlink.net |
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12-13-2009, 03:16 PM
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Registered
Join Date: Feb 2004
Location: California
Posts: 926
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Quote:
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John Dougherty Dougherty Racing Cams |
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12-14-2009, 08:01 AM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,132
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All my 3.2L engine has that isn't stock is SC cams, 930 jugs and slugs, and a single T60-1/0.85 AR turbo.
It has dyno'd from 427-447 wheel hp @ 1 bar.
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont replica Speedlines (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel |
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12-15-2009, 03:04 PM
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Tippy,
Are you running an intercooler with that set up? Stock 930 or aftermarket? Sounds awesome
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Millhaus |
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12-15-2009, 05:58 PM
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Chain fence eating turbo
Join Date: Dec 2008
Location: Austin, TX
Posts: 9,132
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Quote:
Here is a pic: 
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Cory - turbo'd '87 C3.2 Guards/Blk, 3.4, 7.5:1 CR, 993SS cams, Borg-Warner S366 turbo @ 1.2-1.5 bar, Treadstone full bay IC, 70mm TB, TiAL F46 WG, HKS 1 1/2" BOV, twin 044 pumps, MicroSquirt AMP'd w/GM smart coilpack, Bilstein coilovers, Tramont replica Speedlines (285's rr, 225's frt), Big Reds frt, 993 rr., tower brace, MOMO wheel |
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12-16-2009, 05:03 PM
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SC cam vs 964
I have heard many talk about the SC cam upgrade as being the best bang for the buck on a 930 rebuild but others have mentioned the 964 cam.
Any opinions? What are the benefits of both? Thanks
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Millhaus |
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12-21-2009, 04:33 PM
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Running 964 cams, they pull much harder in the upper RPM range over the stock ones. Work well with cis or efi, a bit more aggressive than SC cams.
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75 930, 76 930, 83 SC EFI turbo |
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12-21-2009, 08:15 PM
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930
Porsche 911 Turbo
Porsche 911 Turbo
XBJ-930
1988 Porsche 911 Carrera
3.6 conversion
Porsche
Retor 911
Scarab
Riley
83 SC
