AT in engine number

[JFP in PA]

The engine was a match for what was in the car, including ALL UPDATED PARTS SINCE THE CAR WAS FIRST ASSEMBLED, which is pretty much the way they have always done things. After getting stung with a class action over the single row bearings, they switched the the oversized non serviceable unit, which was an updated part. Any other updated parts were also replaced, but otherwise the AT engine was a match for the original one.

[piper6909]

Originally Posted by JFP in PA

The engine was a match for what was in the car, including ALL UPDATED PARTS SINCE THE CAR WAS FIRST ASSEMBLED, which is pretty much the way they have always done things. After getting stung with a class action over the single row bearings, they switched the the oversized non serviceable unit, which was an updated part. Any other updated parts were also replaced, but otherwise the AT engine was a match for the original one.

Sorry, I don't mean to split hairs with you but an engine with "updated parts" is not "an engine that matches what the car originally came with." I would imagine that the engine block's casting or milling has to be different in order for the oversized bearing to fit. So, no, it doesn't match what the car came with.

I only mentioned it so if the OP someday decides to service the IMSB they will know NOT to rely on what the car originally came with, as I did.

[JFP in PA]

Originally Posted by piper6909

Sorry, I don't mean to split hairs with you but an engine with "updated parts" is not "an engine that matches what the car originally came with." I would imagine that the engine block's casting or milling has to be different in order for the oversized bearing to fit. So, no, it doesn't match what the car came with.

I only mentioned it so if the OP someday decides to service the IMSB they will know NOT to rely on what the car originally came with, as I did.

The OEM's are required by law to include ALL updates in reman engines, particularly if the replacement is a waranty issue, and/or if there is a liability issue involving the update components; so with the exception of the updates, it otherwise replicates the original engine. The object is to keep the warranty recepient "whole", and prevent any known possible failure issues.

As for which AT engines carry the oversized IMS bearing, the AT serial number can be decoded to determine its date of remanufacture; so AT's prior to PCNA switching to the oversized bearings would contain exactly what bearing the original engine carried; those producted after the change over date would carry the larger bearing. And just to address your point of contention, the engine cases carrying carrying the oversized bearing are EXACTLY the same as the original, only the IMS shaft was changed to allow the use of the large IMS bearing.

[piper6909]

Originally Posted by JFP in PA

The OEM's are required by law to include ALL updates in reman engines, particularly if the replacement is a waranty issue, and/or if there is a liability issue involving the update components; so with the exception of the updates, it otherwise replicates the original engine. The object is to keep the warranty recepient "whole", and prevent any known possible failure issues.

As for which AT engines carry the oversized IMS bearing, the AT serial number can be decoded to determine its date of remanufacture; so AT's prior to PCNA switching to the oversized bearings would contain exactly what bearing the original engine carried; those producted after the change over date would carry the larger bearing. And just to address your point of contention, the engine cases carrying carrying the oversized bearing are EXACTLY the same as the original, only the IMS shaft was changed to allow the use of the large IMS bearing.

You want to keep splitting hairs. I never disputed that they use updates and I don't want to argue with you.

I just wanted to clarify that if a car has AT engine, it's not necessarily the same as the engine that originally came in the car. It may FUNCTION the same, it may work with the cars' electronics the same way, but it's not necessarily the same as the original. That's useful information to for people know, especially if they plan on doing the IMSB, that's all.