Piston and Rods

[datzenmike]

During my 2.3 build I had occasion to cut some L20B/Z22 pistons off as the easiest way to get to the rods I wanted. I've always said the L series was totally over built... just look how thick that piston top is compared to the newer Z24 and KA pistons.
 
The KA piston is from a truck, notice the much smaller oil control ring land and how the earlier pistons are open behind the oil ring much of the way around the piston. The KA just has several small holes. I wonder if this is because some later KAs had oil squirters to cool the pistons?
 
 
L20B piston
 

 
 
Z22 truck piston
 

 
Z24 piston
 

 
 
KA24E S13 piston
 

 
 
Top two rod ends are KA24Es with floating pin S13 on left and truck press pin on right
 
Bottom: Notice how much narrower the Z24 rod on the left is from the L20B on the right.
 

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[laotsu]

so... you decided to go for the floating wrist pins?

[Sealik]

 

 

Bottom: Notice how much narrower the Z24 rod on the left is from the L20B on the right.

 

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Yeah....I noticed the difference in the thickness of the Z22 rods after they were installed on my Z24 (NPR) pistons

Only left .012....should of been around 2.5mm (total)....for stock config

 

 

 

Rods were removed and shaved

[datzenmike]

Yes.... yes I did. Just read my build thread on how I plan to do this.

 

 

 

Yeah....I noticed the difference in the thickness of the Z22 rods after they were installed on my Z24 (NPR) pistons

Only left .012....should of been around 2.5mm (total)....for stock config

You are right Doug. I just assumed that all L and Z rod small ends were the same. Not so by a mile.