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Registered
Join Date: Oct 1999
Posts: 8,673
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78/79 SC emissions systems?
I've always thought that the 78 and 79 SC's had a CAT but not an oxygen sensor. And of course they had the 'smog' pump.
In 80, they used a different CAT with an Oxygen sensor. No smog pump. However, A friend that usually knows what he's talking about is adamant that the 78/79 SC's did NOT have a CAT or an oxygen sensor. Is he correct? I haven't been able to pull it up on a search and don't have an early SC in the garage. Anyone know? Thanks. |
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05-21-2010, 03:33 PM
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Mike Holbrook
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My 79 has a cat but no 02 sensor. Also as a California car, it was equipped with the smog pump. In 1980 they changed to a cat with an 02 sensor through the rest of the SC years.
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Mike Holbrook Meridian, ID 1979 911SC Targa |
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05-21-2010, 04:02 PM
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Registered
Join Date: Oct 2003
Location: Michigan
Posts: 14,093
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The ROW SCs came with the premuffler and no 02 sensor but a smog pump.
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1981 911SC ROW SOLD - JULY 2015 Pacific Blue Wayne |
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05-21-2010, 05:40 PM
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gearhead
Join Date: Nov 2007
Location: Loverland, CO
Posts: 23,556
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According to both Anderson's book and Paternie's redbook, 1978-79 had a cat for US models (49 state) and EGR was added for CA. The O2 sensor was definitely a 1980 addition.
930/03 78-79 ROW 911sc engine no cat 930/04 78-79 49 states with cat 930/05 78-79 Japan, same as ROW 930/06 78-79 CA with cat and EGR
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1974 914 Bumble Bee 2009 Outback XT 2008 Cayman S shop test Mule 1996 WRX V-limited 450/1000 |
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05-21-2010, 05:42 PM
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Registered
Join Date: Oct 1999
Posts: 8,673
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Thanks, Matt.
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05-21-2010, 07:00 PM
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Registered
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Quote:
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A nose heavy airplane flies poorly, a tail heavy plane flies once. |
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05-21-2010, 11:07 PM
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Rowdy
1979 Porsche 911SC
