Engine (mild) overhaul

So the engine got mostly stripped to see whats going on with it. 

Seems like a perfect storm happened all at once.

Findings are:

1)  even with still having decent compression, the cylinder walls are smooth with no hatching and the rings are tired and gave up without breaking. Maybe sticking rings.

(probably should have done this while head was being changed)

cyl 1

cyl2

cyl 3

cyl 4

2)  "rebuilt" head from sports car warehouse leaks like a seive from exhausts.  Have to lap valves

3)  Measured pistons at top and middle- 3.15 top (stock size) and average 3.12 at wrist pin.    New ones are needed.   

BTW define terminology before ordering a set of pistons.

My version of a set of pistons is enough to do a complete engine. I asked Modernengine if this was a set for the MGB.  He says yes so I buy "them"

So I get one piston with rings for about $100.

 Ebay guy from California states a set is one piston with rings.  

I didn't know if I was wrong so I asked people at lowes and the USPS if they would call that a "set"

They all answered "no"  So suck on that Modernengine.  It's on its way back.

4)  pushrods 5 and 8 were ever so slightly bent.  -both exhaust btw.

5)  the bearings look really good, but a new set (my version) will be ordered.

I bought a honing brush for $37, ($89 at oreilly- really?!?!?) lapping tools and paste, ring expanders, ring compressor, and a bore measuring kit that won't show til after Thanksgiving.

I'll be done by then so it doesn't matter.

Cylinder 4 with the first suggested reverse hone to break the glazing.  What a difference.

   

You can see the honing marks in cylinders 2,3,4.  VS 1 that is oil soaked and black.

The drill I have was set to the lowest speed to initially find how fast the brush needed to be moving.

Turns out that that speed and counting 1 second for entry and exit of the bore came out to the ideal 25-30* hatching .

I started out with a 10 count and checked.  The glazing was gone and a pattern was forming.

I went back and gave them a 30 count (30 strokes) , this was enough for cylinder 4 and 1, 

2 and 3 took a little extra to get rid of the piston ring high and low points.
Needed: 
AFAIK
head and rocker studs, nuts, washers
all copper head gasket
pistons
bearings for rods

I'll find something after placing the order I'm sure.