Got quite a bit done today.  Motor and front subframe in and most of the interior is in.  Just doors and rear subframe to go.  Should move along quickly.

Front subframe is 90% done.  Just the brake hard lines to do now.

7.5 Cooper S disc brakes
Greenstuff brake pads
Goodridge braided hoses
Standard Moulton Rubber cones
Top Arms replaced
tie rods replaced
all new bump stops and bushes

Made some more progress today...

The motor didn't have a thrust washer for the primary gear when I stripped it down, so with some trial and error I finally was able to get my end float down to .006  I realize that 6 thou is a little on the high side, but I tried a .112 thrust washer and had .012 float, and the thickest washer I could find was .118, so I'll make due with what I have.

Update...

The +.040 pistons were out of stock.  So I ended up with the nural +.020 over in the high compression.

As I stated before the mains and big ends were ground to .010

Running the standard 1275 cam

Crank has been balanced.

Block assembled.

Nural +.020 high compression pistons

update on block.

Took the block in to the machine shop...

Pistons are going to be +.040
Both mains and big ends will be -.010

I ordered a set of standard thrust washers.  Once I have everything assembled I can go about setting the correct end float on the crank.  (I should have checked my end float during disassembly)

12g940 head rebuild

Tearing into the head tonight...

Pre A+ head (flat area behind thermostat housing)
12G940 casting number
501 designation just below casting number

Valve length:
3.57

Intake dia:
1.33

Exhaust dia:
1.15

*side note: top caps were fitted to intake valves... this is odd, if you only have 4 then they should be fitted to the exhaust side.

Single groove collets

Spring free lengths:
1: 1.92
2: 1.92
3: 1.93
4: 1.92
5: 1.93
6: 1.92
7: 1.92
8: 1.92

Some of the valve guides are badly worn.  Only in the exhaust valves, all intake valve guides still feel good.


cylinder 2

 cylinder3

Uneven fueling from the twin carbs possibly?

rebuild...

Info:

Block: 12G1279

Standard bore should be: 2.780"
Current bore: 2.789"

Stroke: 3.20"

Piston to deck: 1/32"

oil pump: 2 bolt spider drive


ORDER LIST:

cam and crank bearings
Pistons (probably +.040)
Cam Followers
Gasket Kit
Oil pump, 2 bolt spider
water pump