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engine assembly question regarding rods

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Old 06-18-2004 | 09:25 PM
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SMOKNZ's Avatar
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engine assembly question regarding rods

When looking at the cap of the rod where the bearing rides, one side flares out farther than the other. My question is do the larger flares go to the outside of the crank journal, or do they butt between the rods. I figured I would ask now when it's easy to change around. I would have looked at the old rods and pistons, but they are now disassembled. Look at the pic enclosed here : http://www.bytehead.com/~dunk/6-18-04.html

Is this in right? or backwards. I made all the rods go the same way on the pistons, I have floating pins, so it would be easy to reverse if needed.

Bill

Last edited by SMOKNZ; 06-18-2004 at 09:33 PM.
Old 06-18-2004 | 09:35 PM
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From: I reached back like a pimp and smacked that LS1....
That is correct. The chamfered side of the bearing will face the outside of the journal.
Old 06-18-2004 | 09:37 PM
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Thanks Jim!

Bill
Old 06-25-2004 | 11:01 PM
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Re: engine assembly question regarding rods

Originally posted by SMOKNZ
I made all the rods go the same way on the pistons, I have floating pins, so it would be easy to reverse if needed.
[/B]
This is the statement that worries me. If your rods are asymmetrical, as your picture shows, then when you build your piston/rod assys you will build a right and a left bank set (4 each). Did you do this? Your statement above makes it sound like you didn't.

A piston will have some kind of mark on it (many times an arrow or dot on the crown) to point to the front of the engine. This is critical since the piston pin will be offset and it should only be offset to one side. If it's reversed the piston will rock in the bore at the wrong time and will then likely make noises you won't like.
Old 06-26-2004 | 03:16 AM
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Re: Re: engine assembly question regarding rods

Originally posted by 94bird
This is the statement that worries me. If your rods are asymmetrical, as your picture shows, then when you build your piston/rod assys you will build a right and a left bank set (4 each). Did you do this? Your statement above makes it sound like you didn't.

A piston will have some kind of mark on it (many times an arrow or dot on the crown) to point to the front of the engine. This is critical since the piston pin will be offset and it should only be offset to one side. If it's reversed the piston will rock in the bore at the wrong time and will then likely make noises you won't like.
It shouldn't worry you It worked out fine. Yes the pistons have markings on them, little arrows that point up. The pistons and rods were right.
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