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 Block casting numbers

 Created by: Rsa
Orig. Posting Date User Name Edit Date
Mar 11, 2019 05:56AM kenatminimania  
Mar 8, 2019 01:45AM Rsa  
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 Posted: Mar 11, 2019 05:56AM
Total posts: 1374
Last post: Mar 25, 2019
Member since:Dec 29, 2004
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Quote:
Originally Posted by Rsa
Hello to all and thanks in advance for your help. It is greatly appreciated ??
i own a small shop in Reeds Spring, MO, and I’m working on an 08 WORKS
convertible, customer purchased a used engine from out of state, the cylinder head has the same casting number as the one in the car now, but the casting number on the block is 04777662AEA, best I can tell from several minutes of
research this casting is an R50 non supercharged, today I got the cast # off the crankshaft 04693132AA, forged crankshaft for the S class. Is this block cast 
number 04777662AEA an S class block? The motor was advertised as an 80,000
mile used S motor. The inside of the motor I almost too clean, like it’s been rebuilt maybe. I would like to be certain of what the customer has provided and make the best possible upgrades(if needed) now while it’s on the bench. The original motor locked up, any pointers or particulars when it comes to cleanup

Thank you
Hello Rsa, if you have a non-supercharged engine for a supercharged car, you don't want to use it.  The S engine has internal upgrades and has a lower compression than the non-S engine. 

Here are some of the differences:

Cooper crank is cast from cast iron, the S is machined from forged steel.
Cooper rods are non-coplanar powder metal, the S are forged steel
Cooper pistons have flat tops, the S has concave tops
Valve materials are different for Cooper vs S.
Cooper S has oil squirt jets for the piston crown, Cooper does not.

 Posted: Mar 8, 2019 01:45AM
Rsa
Total posts: 1
Last post: Mar 8, 2019
Member since:Mar 5, 2019
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Hello to all and thanks in advance for your help. It is greatly appreciated ??
i own a small shop in Reeds Spring, MO, and I’m working on an 08 WORKS
convertible, customer purchased a used engine from out of state, the cylinder head has the same casting number as the one in the car now, but the casting number on the block is 04777662AEA, best I can tell from several minutes of
research this casting is an R50 non supercharged, today I got the cast # off the crankshaft 04693132AA, forged crankshaft for the S class. Is this block cast 
number 04777662AEA an S class block? The motor was advertised as an 80,000
mile used S motor. The inside of the motor I almost too clean, like it’s been rebuilt maybe. I would like to be certain of what the customer has provided and make the best possible upgrades(if needed) now while it’s on the bench. The original motor locked up, any pointers or particulars when it comes to cleanup

Thank you