Closing the Case! How to Rebuild your Air-Cooled Porsche Engine.

Closing the case

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

Prolube MP22R/F PROLUBE 10-Ounce (300ml) Heavy Duty Pistol Type Oiler | Steel Pump | Rigid & Flexible Spout | Dome Shape | Red Color (41431)
TEKTON 3/8 Inch Drive 6-Point Socket & Ratchet Set, 43-Piece (6-24 mm) | SKT15201
Precision Instruments (PREC2FR600H) 3/8IN FLEX HEAD 120 TO 600IN LBS.
GEARDRIVE Offset Box Wrench Set, Metric, 9-Piece, 6-23mm, 75-Degree, Chrome Vanadium Steel Construction with Rolling Pouch
Prolube MP22R/F PROLUBE 10-Ounce (300ml) Heavy Duty Pistol Type Oiler | Steel Pump | Rigid & Flexible Spout | Dome Shape | Red Color (41431)
TEKTON 3/8 Inch Drive 6-Point Socket & Ratchet Set, 43-Piece (6-24 mm) | SKT15201
Precision Instruments (PREC2FR600H) 3/8IN FLEX HEAD 120 TO 600IN LBS.
GEARDRIVE Offset Box Wrench Set, Metric, 9-Piece, 6-23mm, 75-Degree, Chrome Vanadium Steel Construction with Rolling Pouch
$9.99
$72.29
$128.54
$27.99
Prolube MP22R/F PROLUBE 10-Ounce (300ml) Heavy Duty Pistol Type Oiler | Steel Pump | Rigid & Flexible Spout | Dome Shape | Red Color (41431)
Prolube MP22R/F PROLUBE 10-Ounce (300ml) Heavy Duty Pistol Type Oiler | Steel Pump | Rigid & Flexible Spout | Dome Shape | Red Color (41431)
$9.99
TEKTON 3/8 Inch Drive 6-Point Socket & Ratchet Set, 43-Piece (6-24 mm) | SKT15201
TEKTON 3/8 Inch Drive 6-Point Socket & Ratchet Set, 43-Piece (6-24 mm) | SKT15201
$72.29
Precision Instruments (PREC2FR600H) 3/8IN FLEX HEAD 120 TO 600IN LBS.
Precision Instruments (PREC2FR600H) 3/8IN FLEX HEAD 120 TO 600IN LBS.
$128.54
GEARDRIVE Offset Box Wrench Set, Metric, 9-Piece, 6-23mm, 75-Degree, Chrome Vanadium Steel Construction with Rolling Pouch
GEARDRIVE Offset Box Wrench Set, Metric, 9-Piece, 6-23mm, 75-Degree, Chrome Vanadium Steel Construction with Rolling Pouch
$27.99

Torque Specs

Main Bearing Bolts, 35 N/M

Crankcase M8 studs, 25 N/M

Setting out your parts will help you when it comes to closing the case
Setting out your parts will help you when it comes to closing the case

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.

When it comes to a Porsche case the only product to use is Loctite 574
The loctite 574 should squish out the case seam

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

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