And reduce mileage by one-third. :rolleyes:

I never switched my old car to carbs. I just didn't really like trying to fix the system. I realize that you can fix it methodically and all, but damn it can be a pain.

Sorry for interjecting on a CIS thread.

I wish I would have saw these additional posts, before I started but oh well.

SO, I did a partial drop and installed the CIS yesterday. Took me a couple of hours and finally finished after a couple of F-bombs and few "Help me Jesus!"
The biggest mistake was after finally getting the manifold to sit properly, and tehn realizing that I had 3.2 intake gaskets on there.... here I go again. Pull it partially off and start over.

Well, hopefully the system will work well, otehrwise I probably will switch to carbs.
Thanks for the info and help!

jcc911:
I don't get it.
3.2 intake gaskets have holes for 3 fasteners, 3.0 only have 2.
Hard to miss.
Go at it again and make sure that the mating surfaces are absolutely clean.
I see that you have a '78 with SSIs.
This engine already has the early CIS without Lambda with larger intake runners; it is an ideal candidate for a 964 cam-profile.
With 964 cams plus SSI's and M&K you'd have about 40 additional horses. :)

CIS is very reliable once sorted out and set up right; carbs are another can of worms with terrible gas-mileage.

In order to install my CIS, I had removed a 3.2 intake, which mounted the same as the CIS intake. Not sure what you meant by 3 holes. The difference in the 3.2 gaskets is there is a cut out for the injector, at least that is what I thought.

I need to do this job to address some leaks. In retrospect, would have preferred to remove the whole engine? All those little washers and gaskets, etc. I'm thinking that I'd rather deal with a couple of big bolts than all that little stuff. I'm riding the fence on this one... are the only steps in a partial to remove the coupler and the engine mounts in the back? Maybe loosen the tranny ones? ???

I installed the CIS with a partial drop. The reason I didnt do a full drop was because I just put the engine back in and finsished connecting every thing. SO to disconnect everything I just connected did not thrill me especially if I had another option, i.e. a partial drop.
Dropping the engine/tranny is not that hard, but much more work than a partial. Of course the amount of space you have to work on thinkgs is much less with a partial. However once you have the CIS off, everyting is pretty easy to get to.

To answer your question, I think if I was just installinga CIS, I would probably just do the partial again. The keeps you form draining oil and remofing all of the hoses and electrial connections.

Yes, to do the partial all I did was remove the shift coupler set screw, put the jack in place, and removed the mount bolts. I am not sure how many inches I dropped it, but it was enough to get the manifold in there, and I did not loosen the tranny bolts.

By all means, loosen the transmission bolts couple turns to make it easier.
After all, the angle changes quite a bit when lowering the rear.
Watch the cables and hoses to prevent too much stress.
Have fun. :)

When I had my 2.4 in my 1973, I removed and replaced the entire CIS system without removing motor mounts or dropping the engine. It was relatively easy. Just start removing pieces until you get down to the intake manifold runners