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main bearing bore codes?

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Old 09-28-2006, 08:22 AM
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Default main bearing bore codes?

I am deciphering the main bearing bore codes that are on the flywheel side of my d16a6. It says (going from top--head side, to bottom--oil pan side) B B C B C. Now, which one is #1 and which one is #5? Do I read it going down--in other words #1=B? Or do I read it going up--in other words #1=C? I hope I am being clear enough, because I have a copy of a service manual for a d16z6 and it says you read from bottom to top--in other words #1=C BUT I also have a Haynes 88-91 Civic repair manual and it says the opposite that #1 would be B!!!! I am confused...Which one is correct? This is for a d16a6.....
Old 09-30-2006, 03:00 AM
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You might want to follow the instructions for the block you're building.
Old 09-30-2006, 07:33 AM
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Default Re: (91SiZ6)

z6 and a6 should have the codes in the same order--the letters are stamped in the exact same place on each block.....
Old 09-30-2006, 12:16 PM
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You start with the beginning of the sequence being on journal number one. It isn't rocket science.
Old 09-30-2006, 05:09 PM
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Default Re: (91SiZ6)

I know its not rocket science there guy. Its a simple question, and frankly they don't make it very clear. In my situation the "letters" are very close to each other-(all b and c)-but what about someone doing a build who has a block that says A D A B C? It would be pretty easy to get it backwards. Journal 1 = the first letter going towards the head side from the crank side, or the other way around?
Old 09-30-2006, 11:45 PM
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Journal number one is the one closest to the oil pump/crank pulley side of the motor. The letter sequence reads left to right and begins on journal number one.
Old 10-01-2006, 09:20 AM
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Default Re: (91SiZ6)

I know journal one is closest to the crank pulley--I was just confused about the way they engraved the markings on the block. thanks though.
Old 04-07-2010, 04:16 AM
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Default Re: main bearing bore codes?

Bringing it back because I need to know where to find these letters. Do you have to remove the transmission?
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