My 911 SC Engine Rebuild Thread

[OsoMoore]

A generous friend brought over his engine mount, yoke, and extra-high jack stands.

His yoke is a generic HF adjustable one, and I'd be more comfortable with a solid Porsche one that has a larger contact surface. So I'm looking around to see if I can get one used.

[snbush67]

The porsche yoke is definitely optimal and also has the advantage of being able to split or assemble the case on the stand, remove the flywheel etc.

[OsoMoore]

Originally Posted by snbush67

The porsche yoke is definitely optimal and also has the advantage of being able to split or assemble the case on the stand, remove the flywheel etc.

Ordered a porsche yoke, drained the oil, and jacked it as high as my 3 ton floor jack will take it. Now time to unscrew, disconnect, and decouple things for an hour or two. Engine drop planned for Saturday.

I guess I need to revisit engine drop strategy videos, it has been a while. Last times I did it with two jacks under the engine, bringing it down onto a big piece of cardboard. Then slid it out and used a 2x4 to ratchet it up onto my furniture dolly.

Also repairing a bicycle tube for my daughter.

[OsoMoore]

Picked up a HF motorcycle jack this morning, I've seen it recommended and used in various threads here. I think I'll need to fabricate a cradle from some wood I have around.

[911 Rod]

Does the handle clear the bumper?

[OsoMoore]

Originally Posted by 911 Rod

Does the handle clear the bumper?

I don't have time to give it a try until Saturday. I'm already considering removing the bumper in order to save the 3-4 inches of extra drop distance.

So I'm not sure about the handle.

[OsoMoore]

Engine is out! Minor complication as I found the motorcyle lift was not great for the drop - couldn't slide far enough in to be under the center of gravity. So I swapped to the two-jack method.
It might work fine if you drop engine-only.

But now I've moved onto the pair of moto lift and small jack under the transmission, and after I split the case I think the moto jack will be fine for moving it around and getting onto the engine mount.

Next step - split of the transmission, and start into the Rebuild book.

[911 Rod]

Well done!
I see lots of cleaning in your future as well. If that’s your thing.

[OsoMoore]

Originally Posted by 911 Rod

Well done!
I see lots of cleaning in your future as well. If that’s your thing.

Definitely lots to clean. I cleared the transmission very well a few years ago, and the CIS when I rebuilt it. But the rest needs it badly.

[REVerend]

Originally Posted by OsoMoore

Definitely lots to clean. I cleared the transmission very well a few years ago, and the CIS when I rebuilt it. But the rest needs it badly.

Sorry if I missed this… but is this your first time dropping a 911 engine? The pace of progress makes me feel like a slacker for not dropping mine yet to do some stuff.

[OsoMoore]

This is my 3rd or 4th drop (same car). I rebuilt the transmission some years back, as well as doing the clutch and rebuilding the CIS.

[OsoMoore]

I need to figure out the best general purpose cleaners to use for external areas as I go. Just Simple Green and a bunch of paper towels? Much of this is very filthy from oil leaks accumulating dirt.

[ammonman]

I use Simple Green Pro HD (purple) diluted 4:1 in my parts washer. It is safe for all metals (when used as directed) and breaks down grease really well.

[OsoMoore]

Status so far!

• Engine dropped
• Transmission split
• Tools reorganized

Some other repairs I've found that I need to do, probably while waiting for the yoke which takes a week to arrive:

1. Repack CV joints (one large split boot, one small split)
2. Repair cold start injector wire
3. Repair thermotime switch wire

Other activities:

1. Clean engine
2. Bag and box the parts already removed
3. Better organize the removed spark plugs for analysis when engine is open
4. Remove CIS

That all starts with buying various tools and supplies today, such as a magnetic bowl and sturdy rubber gloves for cleaning.

[911 Rod]

Originally Posted by OsoMoore

This is my 3rd or 4th drop (same car). I rebuilt the transmission some years back, as well as doing the clutch and rebuilding the CIS.

Your first post you made it sound like you were a rookie

[OsoMoore]

Originally Posted by 911 Rod

Your first post you made it sound like you were a rookie

I am feeling rookie-ish. Opening the big box is going to be a challenge, and I don't know what sort of costs I'll find inside.

[OsoMoore]

I discovered (rediscovered?) that you don't store your transmission on its end, because it will slowly leak out of the fill hole. Store it flat in the normal orientation as in the car. So that was a small mess, and now I have to remember to re-top it off.

I did begin removing the CIS. The EGR system is a big pain in the butt, but I was able to get it off and get to all the intake header bolts. So mechanically the CIS is separate.

I need to decide if I'm leaving all the electrical stuff on the engine, or taking half of up it with the CIS. I was going to keep it intertwined with CIS, but now I'm thinking I'd rather keep it below. Not sure.

I guess it all comes off eventually anyway, so I could just take it off now. Taking lots of videos!

[NOLAsc]

Subscribed...

[OsoMoore]

CIS Removal went along without any issues. I removed EGR and all the intake bolts, detached all wiring from it. Lifted it off solo with a little bit of wiggling.

Wiring came off along with the shroud, as the wire for the fan goes through the shroud. Noted a few of the shroud bolts are slightly longer, but all seemed the same thread/head. Not sure that matters.

The area behind the fan where the big oil tube comes up was quite messy, possibly a leak source. The fan itself was a bit hard as I couldn't rotate the belt off as normal with the engine unable to turn. I loosened the fan strap, tilted it forward, and was able to slide the belt off the engine's pulley instead of the fan's.

Valve covers came off next and looked pretty good except of course #3. Pictures in next post.

[OsoMoore]

Side-note, several cylinders were flooded with oil, as seen when removing the intake manifold.
I think it was 2, 4, 5, and 6. Will double-check later.