After the restoration: Engine Teardown [page 9]

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Sunday, June 13, 2010 [19326 miles]

Yesterday I pickup up more items needed to get the bike back together. I’m still waiting for the cam and back ordered slingers. Since I’m busy this month the wait does not bother me. I hope to have all parts and prep work done by the end of this month. I want to get the bike back on the road before the end of July.


Oil gear check: < 0.25 mm

Oil gear check: < 0.25 mm

Oil gear check: < 0.25 mm
ISO 50   f/2.8   1/60   0 ev   7.3mm
Oil gear check: < 0.05 mm

Oil gear check: < 0.05 mm

Oil gear check: < 0.05 mm
ISO 50   f/2.8   1/60   0 ev   7.3mm

Today I checked the replacement oil gears. Translating the measurements from the Barrington book to metric I get an allowable backlash range of 0.10 mm to 0.25 mm. Mine measures as something less than 0.25 mm. The allowed clearance is 0.01 mm to 0.04 mm. My 0.05 mm feeler wouldn’t fit (good) and I had to scrounge around the garage to find something smaller. Ahh… 0.0015 inch is under 0.04 mm and it fits just right. I’m going to call the oil pump gears good.


Lifters

Lifters

Lifters
ISO 50   f/3.5   1/60   0 ev   12.6mm

The replacement lifters polished up just fine. Those are dust specs on the bottom lifter in the picture, not pits.


Cylinder head and valve repair

Cylinder head and valve repair

Cylinder head and valve repair
ISO 50   f/2.8   1/60   0 ev   7.3mm
Ready to install

Ready to install

Ready to install
ISO 50   f/2.8   1/60   0 ev   7.3mm

The cylinder heads came back ready to install. One of the spark plug inserts was just starting to back out. It was removed, the head welded, then drilled and tapped. I took them out of the plastic bags they were in to take a closer and to snap these images. They look quite nice. Back in the plastic they went. Now I need to make the pistons and cylinders look as good.


Monday, June 14, 2010 [19326 miles]

Dirty and clean

Dirty and clean

Dirty and clean
ISO 50   f/7.1   1/500   0 ev   7.3mm
Another angle

Another angle

Another angle
ISO 50   f/5.6   1/500   0 ev   7.3mm
Both clean

Both clean

Both clean
ISO 50   f/3.2   1/60   0 ev   9.6mm
Left and Right

Left and Right

Left and Right
ISO 50   f/3.2   1/60   0 ev   10.8mm

I took a wire brush to the pistons. The L & R markings are needed now that I don’t have carbon buildup patterns to remind me which piston came from where.


Ready for bead blasting

Ready for bead blasting

Ready for bead blasting
ISO 50   f/2.8   1/60   0 ev   7.3mm

The cylinders were cleaned with kerosene and masked. I’ll bead blast them this weekend so they will be ready for new paint.


Wednesday, June 30, 2010 [19326 miles]

Masking for paint

Masking for paint

Masking for paint
ISO 50   f/2.8   1/60   0 ev   7.3mm
Clean and dry

Clean and dry

Clean and dry
ISO 50   f/2.8   1/60   0 ev   7.3mm

I bead blasted the rust (but not all the paint) off of the cylinders a week and a half ago. Today I washed them and blew them dry then wiped the bores down with an oily rag. In the time I did that the external body had already started to flash rust! I brushed all external surfaces with acetone as part of the paint prep. Finally the cylider ends were masked.


Paint in progress

Paint in progress

Paint in progress
ISO 50   f/4.0   1/400   0 ev   9.6mm
This stuff

This stuff

This stuff
ISO 50   f/4.0   1/800   0 ev   9.6mm

I’m using a satin black because I like it against the white frame. Yeah, they were more of a gloss from the factory. I don’t care! Over the period of two hours I probably applied 8 very thin coats, 10-15 minutes apart.


Drying

Drying

Drying
ISO 50   f/2.8   1/60   0 ev   7.3mm

No drips noticed. The cylinders are drying in a box in the garage. Tomorrow I’ll see if there are any spots I missed. I’ve plenty of paint left if more coats are necessary.

My cam is ready. I’ll pick it up next week along with the new slingers I ordered. It’s time to get the R69S back on the road.

 

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