Wheels and tyres

Spokes and nipples replated.

If you want to polish the rim to show room finish now is the time to do it, I did not...

I start on the brake side of the hub.

One of the rear rims finished.

New tire lock and rim protection.

Truening of the wheel.

New tubes

Made in Sweden.

The bike on the left is fitted with a set of new MX tires.

The bike on the right is fitted with old school Trelleborg tires.

Air Cleaner

This is the air cleaner for the 1969 model small Bing carburetor.

This is the original style paper filter, on the bike I intened to use I will fit a foam filter.

Bing side float carburetor, fitted to the 1969 model CR 400 and some early 1970 bikes.

Behold the 1970 and later Bing carburetor.

Carb fitted

Air cleaner with hardware and foam filter with cage.

Air cleaner assembled

Air cleaner monted. Also shown in this picture rear inner fender from John at http://www.vintagehusky.com/  always super quality.



3,2,1 Ignition

NOS Femsa ingition purchased, I could have gone with a modern digital ingintion but I kinda like this old school ingition, so far...

The new flywheel is lapped in.

No need to overdo it, just get a smooth surface all around.

Now mount everything up and set the breaker gap. According to the manual it should be 0,40-0,45mm but according to people that raced theese bikes back in the day 0,30-0,35mm is a better choice. I set the gap to 0,35mm

Set piston at TDC

Line up degree wheel, I used a steel wire as pointer.

Back the engine 22 degrees. This equals 3,5mm on the indicator clock. At this point the breakers should just start to open, either use an ohm-meter or do as i did and use the thin plastic foil from a pack of cigarettes inserted between the breakers and feel when they start to open. To adjust the point of opening you turn the ingition plate back or forward, patience is a must.

When the timing is right I mark the location with a punch and use some medium strong loctite on the screws.

Finally the flywheel is tighted to 60Nm.



Engine rebuild part 3 (Top end MG 3056)

Parts ready for assembly. New piston, needle bearing, spacers and gaskets.

Original bore 81,5mm

Cylinder head in great condition.

Nos piston.

Sealing surface lapped in.

Max allowed piston ring end gap is 0,8mm.

End gap measured 0,5mm.

Piston to cylinder clearence is 0,10mm.

Piston and cylinder installed.

Just enough clearence to install cylinder with the engine in the frame.

The bike is taking form.

Cylinder head bolts tightened to 35 Nm.

Steering stem and triple clamps.

Clamps blasted and painted

New bearings.

Original hardware.

Rear suspension.

Original Girling shocks. New paint on springs and bodies. Shafts are straight and have no leaks. There are a few dings in the chrome, but it is a 40 year old bike so I can live with it. 

Original Bufo UNF hardware and spring retaners replated.

These Girlings are 20 mm longer than original and will be fitted to the bike with modified swingarm

Shafts and bumpers are all good.