Closing the engine case on your air-cooled build
Everything is in place, from crank, bearings, to oil pump and intermediate shaft. Now you are ready for closing the case.
Don’t be stressed, just get everything you need set out before you start, turn off your phone and do the job. Watch this video lesson from start to finish, and you will be ready to do the job right.
Parts you will need closing the case
Through Bolts, 11, part number 901-101-173-00
Through Bolt Cap Nuts, 13, part number 999-070-004-02
Special thick washers, 24, part number 901-101-161-01
O-rings, 24, part number 999-701-006-04
M10 Hex nut, 1, part number 900-157-002-02 (up to 1968 x 2)
M10 flat washer, 1, part number N-012-242-3
8mm flat Crush Washers in aluminium, 21, part number 900-031-014-30
M8 Nylock Hex Nut in Yellow Cadmium, 21, part number 900-084-004-02
Assembly oil in a pump
Loctite 574, and acid brushes if you want to use them
Silicon Lube for O-rings
Tools you will need
Strap set P221, P222 (you can get them at Baum Tools if your Porsche dealer is out. The chain strap from Stomski Racing)
000.721.221.00, 000.721.222.00
15mm Socket 3/8 drive
15mm Offset Box End Wrench
8mm Socket 3/8 drive
10mm Socket 3/8 drive
3/8 drive extension
Torque Wrench 3/8drive
Ratchet 3/8 drive
Screw Driver, for safely dropping on the nut and washer in chain housing
Oil Pump
Torque Specs
Main Bearing Bolts, 35 N/M
Crankcase M8 studs, 25 N/M
Closing the Case. Setting your self up for Success
Getting set up and taking the time to do the job from start to finish, without interruption, is the key. The 574 starts to react with the metal on contact and the working time is about 15 minutes.
We start by putting the through bolts in and holding them with the o-ring. Adding the washer and lube after pushing up the bolt. Next, the cap nut is nipped down, of cource removing the special crank rod holding straps first.
Pull the case down with some outside studs untill the sealant squishes out. Tourque the bearing studs in two steps, first to 25 then to the finished 35 N/M.
Work your way areound the outside of the case and torque down the case nuts to 25 N/M.
Up next in your air-cooled engine build.
We are going to work on oil parts and the breather plate and continue with these parts leading up to setting the head studs.
If you missed a lesson catch up here
3 thoughts on “Closing the Case! How to Rebuild your Air-Cooled Porsche Engine.”
Hello Kurt and Sarah,
Thank you for the awesome videos. I have watch most of them and some of them 4 – 5 times each! In a strange way I almost find them therapeutic! 🙂
The amount of detail and explanation is / will be incredibly usefull and the quality of the videos is great.
I have just purchased a 1971 2.2 and starting to accumulate all that I will need for a rebuild so I am trying to absorb as much as I can before I start the whole process. This will probably sound like a stupid question and some might find it unnecessary, but I’ve looked (I think) through the whole site but I can’t find an engine tear down video. Do you have one posted or did you ever consider making a tear down video? I think that a tear down video with tips on how to get tough studs or bolts out, how to split the case and what to look for and check during the tear down would be awesome. I realize that for most, such a video is not needed but I think it would be very interesting and helpful for some. (I know I would get a lot out of it). Just a thought…
In any case, once again, thank you so much for the videos. Can’t get enough of watching them.
Cheers,
Dominic St-Denis
Hi Dominic. We have a teardown on a 2.7 but it is a time-lapse type video. https://youtu.be/5QN_PanJLiM
We did have a snaped stud on the exhaust on this one. Somewhere there is footage in more detail and we can always re-visit.Thanks again for your avid watching, hope you can use the information as you dive into your 2.2liter.
Hello Sarah.
Thank you for taking the time to reply and the link to the video. I went and had a look. That is moving pretty (very) fast!! Would be great if edited into 3 or 4 parts and ran at normal speed. Any thoughts on maybe doing that?
Thanks,
Dominic
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