What to replace in an engine rebuild

[skelz]

okay after talking about it for ages.. I am going to embark on a rebuild on the little one... When I changed the sump over there was noticeable aluminum shavings in the oil and significant play in the big end bearings...
My question is what are the bits i must replace (eg piston rings ,gaskets etc ) to ensure a healthy engine and what should i replace (valves, cam) if budget permits 

[GTMaster]

Well, everything that is worn...
If it's pulled apart then it's best to measure everything. Usually the camshaft and crankshaft don't wear away as quickly as say the cylinders,piston rings,bearings (depends on usage of course) but it's good to have a service manual as that contains all the measurements.
Another thing to do is to change all the seals/gaskets (whether they're good or not, usually are worn by the time the engine needs a rebuild). Cylinder head gasket is compulsary to change if the cylinder head is removed.
To check the condition of the cylinder head the valves have to be taken out.

[skelz]

thanks mate ,.. I have the gasket kits already and given the amount of leaks I would say that most are shagged

[skelz]

well the engine is now in bits on the garage floor was a lot easier than i thought.. here is some pictures . interested in what you guys can tell or see by them
http://s1226.photobucket.com/albums/ee412/s153814/

[skelz]

still ordering bits and pieces for the rebuild..

questions
Can I buy these

http://www.fiat500ricambi.com/fiat126/?categorie=Engine+parts&product=MO1100

Instead of these
http://www.126fan.sk/eshop/index.php?main_page=product_info&cPath=6&products_id=302
http://www.126fan.sk/eshop/index.php?main_page=product_info&cPath=6&products_id=301

Clearly a lot cheaper and easier to post

[Rusty's Uncle]

Simple answer is no. 1st item is big ends , 2nd item is main bearings. If you do not know the difference you might want to bone up on it before you start your rebuild 

[skelz]

way too late for boning up... the engine is in bits .... By big ends do you mean what are also called con rod bearing shells ?

[KAL SPL]

Mine had exactly the same play in the rods even after brand new bearings.
Get everything cleaned and all new gaskets/bearings will be a great start , check out my thread on my engine rebuild if you have any queestions.

Im no mechanic and managed to do mine fine with no leaks and it even runs !

[GTMaster]

Service manuals also have good diagrams in case you forget which piece went where...

[skelz]

well just hit send on paypal for my order of new bits and pieces for engine and gearbox... should be in oz from slovkia in about 2 weeks and then the fun begins.. in the meantime i am going to get the rocker cover and cooling cowling powder coated (red i am thinking) and paint the engine bay and bumpers (black)...

[skelz]

updated photos...
Still a little while to go.. Waiting on Transmission

http://s1226.photobucket.com/albums/ee412/s153814/#!cpZZ2QQtppZZ12

[skelz]

Ok almost back together,,, but have a few questions ...
1. Is there a way to fill the gearbox with oil apart from the plug as I cant get it off ?
2. there is a senor (?) on the gearbox that has electrical terminals.. I cant find what wire should be connected to it any ideas ?

Thanks

[dajwid]

is it the reversing light? Off hand I think it is blue and white cable 

[gsxr126]

1. Remove the lid - 4 bolts - of the gearbox and add oil that way
2. The only electrical wiring for the gearbox is the two plug reverse light switch. The wiring should have two connections on it and from what i have seen it comes from the loom in the engine bay so it will be heading back towards the front of the car from the engine bay (hope that makes sense)

[skelz]

Cool thanks makes sense !!,,
Thanks until my next question !!