1978 / 1979 SC with Non Calif. 3.0 Engine (930/04) and California Emissions
08-20-2002, 07:47 AM
#1
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1978 / 1979 SC with Non Calif. 3.0 Engine (930/04) and California Emissions
Does anyone have any information or experience
on bringing a 1978/1979 911 SC with the 930/04 engine into California and passing emmissions?
I've read up and I know for '78/'79 that the 930/06 engine was specific to California and had exhaust gas recirculation for the pump and catalytic convertor.
What are the parts involved in the recirculation?
Is it possible to find the parts and convert one to the other if needed?
on bringing a 1978/1979 911 SC with the 930/04 engine into California and passing emmissions?
I've read up and I know for '78/'79 that the 930/06 engine was specific to California and had exhaust gas recirculation for the pump and catalytic convertor.
What are the parts involved in the recirculation?
Is it possible to find the parts and convert one to the other if needed?
08-20-2002, 01:56 PM
#2
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Join Date: Jun 2001
Location: Newport Beach, CA
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[quote]<strong>What are the parts involved in the recirculation?
Is it possible to find the parts and convert one to the other if needed?</strong><hr></blockquote>
I don't know if non-California cars had the air pump. I do have a 78SC built on an 85 case with 78 3.0 heads, an original California car. Smog emissions were taken care of by an air pump that put clean air into the exhaust stream. This was accomplished by pumping fresh air into the exhaust at a small opening in the head, between the exhaust valve and the exhaust manifold. I believe the heads are what is specific to the California emissions. The air pump can be put on an out-of-State motor by replacing some of the studs o with longer ones to mount the air pump. It looks like you could easily have the heads modified for the air injection but they would probably have to come off the motor.
FWIF, I just smogged my SC. The air pump lowered the CO level by almost 1%. I think it would be difficult to set the CO level at the passing CO level without the air pump, but probably not impossible. However, the motor without an air pump will not pass the visual inspection.
Hope this helps.
Is it possible to find the parts and convert one to the other if needed?</strong><hr></blockquote>
I don't know if non-California cars had the air pump. I do have a 78SC built on an 85 case with 78 3.0 heads, an original California car. Smog emissions were taken care of by an air pump that put clean air into the exhaust stream. This was accomplished by pumping fresh air into the exhaust at a small opening in the head, between the exhaust valve and the exhaust manifold. I believe the heads are what is specific to the California emissions. The air pump can be put on an out-of-State motor by replacing some of the studs o with longer ones to mount the air pump. It looks like you could easily have the heads modified for the air injection but they would probably have to come off the motor.
FWIF, I just smogged my SC. The air pump lowered the CO level by almost 1%. I think it would be difficult to set the CO level at the passing CO level without the air pump, but probably not impossible. However, the motor without an air pump will not pass the visual inspection.
Hope this helps.
08-24-2002, 03:11 AM
#3
If it is a U.S car you will not be forced to make any changes. As long as it still has all its original emission controls such as convertor and air pump you will be alright. That is if the HC is below 120ppm at cruise and idle and the CO is below 1.0% at cruise and idle. I am a California smog specialist state tech and a 911 fanatic.
