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
