22RE serial number question

[jgranthevagrant]

someone on mud will know how the 22re serial numbers work. I have 2 blocks: both of fairly dubious origin. first one has a broken 3rd piston wrist pin or? something that I can't see yet. Serial number on the side of the block is 29789573 and there is a little philips head symbol with the number 308 beside it. This block has at least 350,000 k on it.

The second block has a serial number of 1778758 on it, with the symbol and the number 227 beside it. I assume the second block is older because it has a lower number? Intake, injectors, etc look to be about the same vintage.

 

[jgranthevagrant]

No replies?! I stumped the Mudders. Guess I will take the lower serial numbered block apart and have a close look at it.

 

[snobdds]

I have no idea, honestly. I know the 2f guys have a thread going, it might give you some insight into Toyota's numbering logic.

All else fails call cdan. He might know. Would like to know your findings.

 

[jgranthevagrant]

I'm just trying to get an idea of the age and mileage of the block I'm about to swap in. I ordered a bunch of parts from CDan last week. He was crazy busy, so it was not the time for serial number chatting. The donor engine has been sitting for a while in a shop, so no compression numbers or anything like that. Turns nicely, unlike my current one, which seized after piston number 3 developed a knock. I will do an autopsy on it later. It was running very well, with minimal oil consumption, no overheating, but age will get to you. It had at least 360 000 k on the clock.