Engine assembly date query

pony65k · February 17, 2008 at 6:36 PM

Hi all.

Forgive me if this has been asked before.

What does the letter after the machining date mean? IE, what does the R mean in 5C11R?

Thanks,

RP

Edited by - rene.pilat on 02/17/2008 23:22:38

SixT5HiPo · February 17, 2008 at 8:28 PM

It's possible you are referring to an engine's assembly date, which is stamped on the boss located at the left front side of the block just aft of the water pump...If that's the case, the last letter is an inspector's id code.

J_Speegle_old · February 17, 2008 at 9:31 PM

Are you referring to the stamping on the drivers side head surface extension or the bottom of the block (oil pan machined surface at the rear)?

Oil pan surface = machining

Head extension = assembly

Believe only the assembly stamping includes any dates and mentioned above

Edited by - J_Speegle on 02/17/2008 21:33:12

pony65k · February 17, 2008 at 11:22 PM

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>

It's possible you are referring to an engine's assembly date, which is stamped on the boss located at the left front side of the block just aft of the water pump...If that's the case, the last letter is an inspector's id code.

Yes, that's what I was referring to, thanks.

RP

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