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Registered
Join Date: Jun 2002
Posts: 893
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Will a Cis from an sc engine work on a 3.2 engine
Hello again gang
I have a complete 3.0 Cis system from an 82-83 and I want to mate it to an 86 3.2 carrera engine. Will it work? |
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03-01-2025, 06:41 PM
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Crotchety Old Bastard
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The non Lambda '78/9 system would be a better starting point but the one you have can be modified to deliver the proper amount of fuel. The system would need about 10% more to adjust for displacement, all other things being equal. The -077 FD can be adjusted up to that level which would about max it out. Would need to mod the inlet ports of course.
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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 |
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03-02-2025, 06:53 AM
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PCA Member since 1988
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I thought I posted a reply last night , but now I don't see it.
Short answer: Yes. That's what I have on my car. With deference to "Crotchety Old Bastard" no adjustments are needed, beyond the basic setup of CIS, with or without the OXS. The CIS has more than enough excess capacity to handle a 7% increase in displacement. Why do you want to go to CIS instead of Motronic?
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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03-02-2025, 10:00 AM
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78 Porsche 911SC 3.0L, 3.3Turbo soon. 
