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1974 911 w/ 83 SC engine
 
Join Date: Aug 2009
Location: Austin, Texas
Posts: 602
Deathly afraid of re-installing the engine!

So I dropped the engine and trans for the first time back in August, by myself, with surprisingly very little issue. Some things I've done while it's been out:

New clutch, pressure plate, TOB and release fork
New fuel injectors, sleeves, and o-rings
Removed, cleaned CIS, new hoses, and installed new intake boots
New oil pressure switch
New oil breather gasket
New belt
New mini starter
Valves adjusted

So here's my issue: I am scared as hell to put the engine and trans back in. Taking it out seemed so easy when I think about trying to re-install it. I don't think this is one of those "Installation is reversal of removal" situations. Does anyone have any tips or pointers for re-installing the engine and transmission?


Old 10-27-2011, 06:51 PM
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Just back the car up!!!!!

Just kidding, if you can take it out you can put it back.

You can also ask for help here.

W
Old 10-27-2011, 06:55 PM
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Putting it back together........

Sit down and make a list of the steps to reinstall the engine. Try to get the steps in a reasonable order, such as: 1) lift engine into body and install motor/transmission mount bolts. 2) install the shift coupler. 3) install wiring on top of engine, etc. You can look thru Waynes book and pick out most of the steps. Then, once you have your list, just work thru it checking each step off as you go. This way, you should not miss connecting wires or plugging in vacuum lines, etc. This probably is not necessary for someone that has done the job many times, but would/should help a novice. By the way, when I put the engine/tranny back in to my SC, I raised the body high enough to roll the engine underneath and then lowered the body to a safer working height. I also used an ATV jack with a 2 ft. by 2ft piece of plywood bolted to it for added stability. Worked like a charm! Good luck with your project.
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Old 10-27-2011, 07:05 PM
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You'll do fine. Just watch the shift rod as it goes into the tunnel. Very easy to get the angles wrong and get stuck on that rod. My other "learned the hard way trick" from doing it alone, is that I have two, 3ft pieces of threaded rod that I stick through the motor mounts and into the engine mount bar to keep the rear end aligned as I raise it up to the car.
It's all about the angles though... your car is nose down and the engine is flat. Take that into account as you are jacking the engine up into the car. Watch out for that shift rod on the front of the tranny. Wait, I already said that
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Old 10-27-2011, 07:18 PM
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You'll be fine! Just take your time and get a friend to help out. I've always used a floor jack with the engine/trans balanced on it. Looks like it'll be much easier with that jack in the picture
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Old 10-27-2011, 07:19 PM
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it really helps to have 2 people so one can watch the trans shaft go into the opening. watch the clutch cable doesn't get caught on top of the trans. don't squish the hoses on the heater box. don't try to raise the engine high enough to attach the mounts; once it is under the bay, lower the car so you don't have to raise engine very high.
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Old 10-27-2011, 07:21 PM
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Last year, I dropped and re-installed mine by myself using an old floor jack with a plywood topped furniture dolly under the engine. I did the same as Fred... lowered the body after getting the engine to that magic point where the tranny shift shaft won't hit the floorpan and the fan won't hit the back of the car. (But then again I did not remove my bumper or valence, so my car body was really high -- too high for the old jack).

Schumicat's right... lay your clutch cable and such on the tranny bracket. The starter is really good at crushing a heater hose.

You may be surprised how easy it is.

Shawn

p.s. I am a firm believer of putting lots of blocks under the engine on each side of the jack, just in case.
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Last edited by NOLAsc; 10-27-2011 at 07:30 PM..
Old 10-27-2011, 07:25 PM
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Looks as though you have a nice jacking arrangement (not sure how that sounded) that
accomplished as long as you get the shift rod aligned into the tunnel correctly everything
else will pretty much line up on it own..
Also having the bumper off is good precaution to allow sufficient height for re-entry...
good luck and let us know how it goes...Bert
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Old 10-27-2011, 08:44 PM
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Don't Worry Brother HWM, Like I posted on your other thread, once you have the engine/trans under the car, lower the car onto the them so all you have to do is raise the engine a couple of inches to guide it in the tunnel, this will insure a lower angle of attack, just watch those CV joints and accelerator cable.

Since you decided to remove the heat and it's components, you will not need to worry about the heater flap hoses.

Once in the tunnel where you want it, check to make sure it is not binding on anything inside the tunnel, then raise the engine to the engine mounts, but right about 4 inches before you mate the eninge mounts, connect the fuel line, electric components and any hose that are hard to get to. Trust me when i did it the second time I found it easier take care of it with the engine partly dropped. Now mount the engine but loosely, you want to align the trans mounts not, BE VERY CAREFULL not to cross thread them, very easy to do. I had to use some C-clamps to help align the trans mounts but was easy enough and insured there was no cross threading.

Now tackle the CV's, just be methodical here and in gradient fashion torque. I used a 4'X1" dowel on the lug studs to help me hold it down as I torqued, on my post 1000 mile re-torque I asked my wifey to press the brakes.

Torque down the mounts.

Reconnect the Hoses and properly torque them as well. Refill and remember hand crack twice before restart to insure oil gets to all components.

Jim
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Last edited by DRACO A5OG; 10-27-2011 at 10:46 PM..
Old 10-27-2011, 10:23 PM
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1980 911 SC
 
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Take your time, this is the fun part.
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Old 10-27-2011, 10:38 PM
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Oh yeah, with the partial drop, check the engine tin rubber skirt is properly align. it should be a double skirt, once goes inside the other on the outside of the engine tin for weather sealing

I found this out the second time around.
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Old 10-27-2011, 10:49 PM
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One little thing to do, get the engine and trans in position and before you raise it all the way, connect the wires to the starter, so much easier then doing it when the engine and trans are bolted up. The hardest part for me are the trans mounts/bolts.
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Old 10-28-2011, 03:16 AM
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I am sure some local buds in Austin can help out. If I was closer I would come over and we could knock it out toute de suite!
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Old 10-28-2011, 03:38 AM
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Did you put in a new thermostat o-ring? I'd recommend doing so while the engine is out.

Big rookie mistake to avoid: make SURE you put the ring gear on your new clutch.

As far as putting it back in - don't be afraid, taking it out for the first time is the intimidating part. Take your time and enjoy. Reconnect the starter before fully raising the drivetrain (making sure the battery is disconnected before you do this).

Double-check all drain plugs and hoses/lines before putting in fresh oil.

Try to make sure that the axle flanges, CV joints, and bolts are free of grease before reinstalling.
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Old 10-28-2011, 04:50 AM
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I find I sleep easier if I make a check list - blank piece of paper - Then cross them off one at a time.

Connect your starter with the engine dropped - but in position - makes it much easier.

take your time.
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Old 10-28-2011, 05:29 AM
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Remove that coil/
you may need that tiny bit of extra room.
I would cut that board down so it just sits under the engine so it doesn't get in the way.
tranny should be in 1st ,3rd or fifth gear so rod is not sticking out very far.
If your by yourself tie up the axles with a coat hanger so the hang high up and not in the way.
When you slide tranny rod into coupler stop for a sec hook up the speedo wires and go under and push in your two backup light switch wires and the lower ground strap.
Old 10-28-2011, 06:44 AM
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I like the threaded rod idea (I always fight with the damn thing. Where did you find metric all thread
Old 10-28-2011, 07:46 AM
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I always label all the connectors and wires. I've probably done this a half dozen times in the last year, and even so i find labels and photos help me get it right the first time
Old 10-28-2011, 07:48 AM
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1974 911 w/ 83 SC engine
 
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Getting the shift rod aligned without bending it is my biggest concern. I take that back, starting it up for the first time after I finally do get it installed. That's my biggest concern.

Anyway, I like the idea of lowering the car to the engine, I just wish there was a better way than the side to side 2 inches at a time method that I used to raise it enough for clearance. Is there a better lowering method than that?

Old 10-28-2011, 08:28 AM
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it really is just reversal of removal. I have done it over 20 times. Three times alone just to fix the transmission 3 years ago.

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Old 10-28-2011, 08:33 AM
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