Engine rebuild with no former experience........

Sump off first thing today.



There were a few plastic bits in the cruddy oil at the bottom of the sump.



Bits of chain guide rail.



It is what it is.



Oil pump off.



I couldn't get the front cover off till I spotted this bolt.:doh:



The lower chain guides which have never been changed in 41 years.





The oil pump chain looks to be in good condition, all the links are tight so I wont replace unless there is good advice to.



Timing cover with the idler wheel at the top and distributer cog on the left.

Lucky I bought a new idler wheel, two broken teeth.



Oil pump chain tensioner also 41 years old and worn.



Measuring the big end end axial float and then crank axial end float.

Crank was 0.21mm vs limit of 0.3mm

Big ends were 0.29 to 0.33mm vs limit of 0.5mm



Pulling off the crankshaft sprocket.





Seven of the pistons were 91.99mm.



Just one was 92.05mm, which is at the large end of the standard sized pistons.



The last thing I did was remove the first big end bearing cap nuts, but the cap didn't want to come off. I gave the studs a light taps but it didn't break free. Any suggestions on how to free it off without damage?

Hello Jim,

very good ducumentation of your work, thank you for that. It will help me very much when i will exchange the chain guides of my engine.
Good luck for continuing the work,

Best regards Markus

I removed the pistons first today, the caps are held on tightly even once the nuts are removed, an interference fit between the cap and the lower portion of the studs. It took a bit of courage to separate the first one.



There is some slight scoring on the top side of the pistons, I was surprised that the underside was clear. Left bank viewed from the front of car.



Right side.



Main bearing sizes, only four shown but there are five bearings?



Before removing the caps I made this video.





Crankshaft lifted out.

After I measure the main bearings and piston bores I plan to send the block out to be cleaned at a machine shop, should I remove the pressure release valves or is it ok to leave them in place?

These two are the main over pressure release valve and the oil cooler over pressure valve.



This one is the oil filer pressure relief valve.

Jim take everything off. After you get the block back clean all the water chanels and oil chanels. I use a brush to clean my rifles and guns. I'm taking from bad $$$ experiences.
Rudiger