CIS airbox replacement... how long?
 

2 questions.

1. How long to replace a cis airbox

2. Engine in or out of the car. Which is easier and faster.

Don't pull the engine.

Time for a pro to replace or time for a DIY guy that has never done it before? Pro - guessing up to 4 hours. DIY, budget a full day assuming you have all the parts at your side.

The later the model CIS, the longer it takes.
Bruce

my 78 took me 90 minutes to drop the engine about 4 inches and remove the CIS , never done it before .. beginning to having it sitting on my bench ..

spend 2 or 3 days completely rebuilding CIS once i had the parts.

about 45 mins to put back in ..about an hour of tweaking and CO adj ..http://forums.pelicanparts.com/uploa...1384382228.jpg
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A '76 (based on your user name) has auto cold-start, so my shop, depending on what we knew about the car, used either a partial drop (no oil leaks + clutch history), or engine removal. You'll want throttle bell crank/console bushings, thermostat o-ring, and an oil pressure switch, injector sleeves + o-rings; in addition to all the airbox replacement parts. It's an all day job to do right and clean, even for a "pro." You should know how to check/adjust the sensor plate height, and when the car is back together, be prepared to have a CO% machine available for tuning. After all that, you should probably plan on measuring cold control pressure (gauges required). Big job.

account for every nut and washer. check down all the ports and turn the engine over by hand before reinstalling to be sure nothing went in. 76 is pretty easy. a 3/8" drive swivel socket is handy for the manifold nuts. a 4-6" drop helps a lot. shop time about 4 hours.

Tools for CIS Removal....
 

Swivel Sockets in both 1/4" & 1/2" drive with assorted extensions are key to removing the nuts under the runners.
I also found that a ratcheting articulating box end also was handy.

On my 1980sc the nuts were 12mm.
I am not sure what size they are on your engine.

Watch those nuts and washers while you remove them.
You do not want to lose anything down the open ports.
Have a magnet handy.

I used a tip from another Pelican board member and made up masonite covers for the intakes using the gaskets as templates.


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Block off intake ports
 

Masonite block offs for intake ports prevents nuts and washers and debris from
falling in engine.

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