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Old 09-06-2018, 11:38 PM   #8
jpd80
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Default Re: Engine block identification

Quote:
Originally Posted by stevethomas1975 View Post
trying to work out if the XM has a 200ci as asvised when purchased? Has 3 plugs & 3 bolt water pump. Numbers from the block as follows;
ARC1DE 6051A
Or
MC22789
Anyone able to decipher?
Appreciate the feedback.
Has seen a lot of posts regarding the 200ci and some doubters
XM and XP had earlier 200 CID with 4 main bearing cap blocks (3-freeze plugs and 3 bolt water pump).

* 250ci -7 main: 4 bolt water pump and 5 freeze plugs.
* 200ci -7 main: 3 bolt water pump and 5 freeze plugs.
* 200ci -4 main: 3 bolt water pump and 3 freeze plugs.
* 170ci -4 main: 3 bolt water pump, 3 freeze plugs, and a “T” code (or no code).
* 144ci -4 main: 3 bolt water pump, 3 freeze plugs, and an “N” code.
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