John McM

Case sealing is imminent. Torque wrenches set, nuts and washers counted. Tightening sequence written on the case. Any tips from those that have done this before ?

John McM

I did a test of Threebond 1104 Neo curing time. I put down six blobs and ran a finger across successive ones at five minute intervals. It cures quite quickly.

I've decided to use Loctite 574 for the case as I will have plenty of time to spread it. I will put a smear of Threebond 1104 Neo on the nose bearing outer edge as it's flexible which is a quality i want in that area.

ffc

Do you need the trick where you slip the O rings over the through bolts using a sharpie cap and some lube? Post 6 in here:

http://forums.pelicanparts.com/911-e...6-rebuild.html

C4inLA

The cure on threebond in open air vs not, would this effect test? Look ready for organized kaos to me.. Remember, if you make a video and excessive screaming and yelling occurs, over dub of soothing classical guitar and subtitles is your friend.

Now is the time folks, reassuring guidance of those with experience insert HERE ...

John McM

Thanks, yes I do have that. Plus I have two sizes of plastic tubing to get the oring off the sharpie and properly seated.

That was a a great thread. Ive bookmarked it

John McM

The point with the Threebond curing test is that it shows that you need to place the sealant on the case quickly enough to ensure it doesn't cure before mating the halves. Too quick for me. Loctite 574 doesn't start curing until the halves are closed so that's what I'm using.

I will video the procedure. That seems to be a gap in the threads as everyone is too busy at that point.

Super90

Very excited for you and your progress.

A note on through bolt o-rings:
Porsche factory tool or not, it's one of the finer points of this process.

I know you have been studying this all very diligently, so you will nail it !

John McM

Yes, I have researched that and have a similar solution

John McM

As an aside this is one point I've yet to reconcile.

The WSM states that you shouldn't push the o ring onto the collar.

I tested the WSM placing and the results were not consistent in where the O ring ended up. I will place it right on the edge of the collar. BTW the P fix it DVD pushes the O ring right up on the collar, which is effectively where the other one ends up with the cap and tool.

ffc

Excellent stuff, and good luck.

John McM

Pic

C4inLA

We did the same thing as cavemen ... We make tools and forge ... I saw where someone made a piston circlip tool from two sizes of copper pipe that seemed to work great ...

John McM

Wow that was intense.

C4inLA

Congrats on the major milestone. Seams look great to me... Look forward to your "reality vs perception" thoughts on the various steps...

I built my own 6ft reef tank of 1/2" low iron glass and handled 75lb glass panels. Adhesive needed to be applied and panels assembled in less than eight minutes before special adhesive skinned over and would be a FAIL, was intense, perhaps not 25,000 dollar Engine Case intense... Well done!

John McM

Total time elapsed was one hour, of which 12 minutes was getting the halves together. Lessons learned:

1. Three people are better than two when putting the case halves together. Two people on the crankshaft and one to help mesh with the intermediate gear and align the nose bearing with its dowel. Then two to hold the case half while the third person helps clear the chain and rods. We took 12 minutes to get the crankshaft in and case halves together.

2. Prior preparation of as many things as possible is a real timesaver e.g, torque wrenches set, washers coated with 111, and numbers written on the case for the tightening sequence. It also helps to put out all of the nuts and washers to be fitted as you know you are finished when they are all gone.

3. Loctite 574 is a forgiving sealant for first timers as it won't start curing until the case halves are together. If I had used Threebond today I think it would have well and truly skinned before I got it torqued down.

5. A quality artists brush is great for putting the Loctite 574 on.

6. The sharpie cap method for installing o rings needs mods. The cap is quite tight on the stud and the Molykote 111 makes it greasy. A screw into its top makes it easier to pull out. I would now like to make up a better tool to get the o ring off the sharpie. I used cotton buds which worked ok. The plastic tubes were great.

Overall a 7 out of 10. I'd be an 8 or 9 on my next go.