Narrywoolan*

This month the focus was still on the rear end, more work on the front suspension and the gear box was re-assembled. But the big thing was major work done to the engine with the fitting of new pistons and valves. They also rebuilt the drive shaft flex couplings, another item we can from Cavalitto today.

Plus note in the Materials list, “repair radiator £558.04”, see my section on the Radiator repair!!

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Z

06 February 1991

Invoice 1526

Aprilia Restoration Note - 5

     -     Rust is the enemy -

Work on cylinder block checking block prior to sending away for boring.

Make up long studs ready for line boring.

Clean out oil sump, oil pump relief valves and oil ways.

Commence work on cylinder head, fitting exhaust valve guides and grinding in valves.

Machine and fit inlet guides, ream out and recut seats.

Lap in valves and machine valve stems.

Fit valves to head and assemble rocker gear and camshaft – “shim up” to obtain correct clearance.

Check tappet clearance and camshaft end float.

Clean and check rocker box cover.

Make up various gaskets.

Commence assembly of gearbox fit all gears and bearings.

Check all working – fit gear box top.

Inspect all road wheels for cracks after bead blasting.

Remove dents from rims.

Fit metalastik bushes to rear axle mounting beams.

Commence to fit axle beams.

Part assembly of one front suspension springing unit and devise sealing requirement.

Turn up two sleeves to fit to front suspension to carry lips seals to kingpin – fit seals.

Press seals into place.

Commence assembly of rear suspension part.

Force grease into various swivels on spring hangers.

Fabricate two spindles and two special nuts to carry greasers.

Fit up front hydraulic pipes.

Strip old metal from main bearings – tin bearing faces and re metal.

Prepare and send clutch plate for lining.

Dismantle electrics and remove dash.

Make up new wiring loom.


MACHINE SHOP.

Modify bearing housing.

Make up special bolts.

Make and fit studs in crankcase.

Bore main bearings.

Make up spacers.

Make and fit small end bushes.

Modify valves.

Re profile front suspension slide after chrome plating.


LABOUR.

154 1/2 hours @ £18.50            £2858.25

10 hours @ £16.50                  £165.00

38 hours @ £20.50                  £779.00     



MATERIALS.

6” x 1 1/4” dia PH bronze           £29.30

12” x 1” dia mild steel              £4.60

40” x 5/8” dia mild steel           £10.91

18” x 3/8” dia silver steel.         £3.89

8 no valves                         £28.96

8 no engine valves.                 £56.60

12” x 12” dia cast iron bar.         £8.28

2 no 32X40X7 lip seals.              £6.59

2 wire hangers.                     £66.70

2 Dunlop racing tubes.              £69.00

4 no 332-03P fitting fem 90 BS600   £17.60

0.790 mtrs hose made to instructions £3.21

1 no bearing                        £44.85

Spark plugs.                         £8.74

6 no 1” core plugs                   £1.73

Rotor arm                            £7.80

Set points.                          £6.90

16 no 14196870 valve cotter.         £6.32

4 no 2047/VI 0.75 pistons.         £189.08

2 no VT1075 fan belts.               £7.73

1 head gasket.                      £57.50

3 no fibre couplings re-build      £110.40

1 no 15590/15520 bearing.           £28.25

Rebore & hone 4 bores.              £64.32

Hone 4 bores as required.           £63.00

4 no switches.                       £5.38

Miscellaneous materials.           £105.33


MISCELLANEOUS.

1 exhaust system.                  £160.00

1 overbraid wiring loom             £57.40

Repair radiator.                   £558.04

Grit blast clean 5 no wheels.       £57.50

1 no clutch plate relined.          £23.00

Remove tyres from wheels.           £13.80

2 no various parts – hard chrome.   £57.50

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