Marty's Z22SE Rebuild

[vocky]

the crank should polish out.

The con rods can go either way around, it's the pistons which must be fitted the correct way around. The gudgen pin hole is offset in the piston.

 

[Marty64]

Investigated on low oil pressure cause, i found another mistake :

In my oil pump, i saw that the spring is smaller compare to a Z22SE one.
What is the standard Z22se spring size ?
Does a smaller spring could have caused low oil pressure and damaged conrods bearings ?

Mine (3.15"):

The little spring was in my oil pump rebuilt engine and have part number 16804230 (not a gm)
I saw that on my VX220 engine the part number is GM 24450057

Also, can you give me the correct length that the oil filter housing spring must have ? Mine is 34.6mm (1.34 inchs)

 

[vocky]

the later oil pumps had a shorter spring to lower the oil pressure.

The vx220 oil filter spring looks fine.

I would say that your big end bearings failed due to the conrod caps being the wrong way around.