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HELP! Are pistons in the right spot!

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Old Aug 14, 2011 | 05:20 PM
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Default HELP! Are pistons in the right spot!

I have a friend who says that the pistons are in the wrong spot. I didn't put the motor together but i do know that the pistons are labeled L and R followed by a serial number.

He is saying that the dots on the outer edge of the pistons should all be in the same position. Does it matter where the dots go?




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Old Aug 14, 2011 | 07:55 PM
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You have some of left and right side pistons switched up. All the dots should be facing to the front.

The L's go on the drivers side and the R's are passenger side.
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Old Aug 14, 2011 | 08:07 PM
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Is there a reason for them to be marked L and R? Is it for exhaust valve location and/or dome location?
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Old Aug 14, 2011 | 08:29 PM
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No it is for the pin offset. They offset them to the thrust of the crank to cut down on piston slap, piston rock, and skirt wear.
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Old Aug 14, 2011 | 09:54 PM
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What he said^^^
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Old Aug 29, 2011 | 08:47 PM
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Who put that engine together???
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Old Aug 29, 2011 | 09:08 PM
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That's what i was wondering
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Old Aug 29, 2011 | 09:41 PM
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Originally Posted by Midnite Magic
Who put that engine together???
What does it matter when it goes 9s? I started it on Sunday, and it runs great! Has great oil pressure and no odd valve-train noise at all. It was an honest mistake that was caught and fixed.

You can bash all you want, its just the internet.
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Old Aug 30, 2011 | 08:57 AM
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He wasn't bashing, it is an honest question. If the motor was put together like that by a professional shop I would question everything that was done to the motor and would have completely pulled it apart, measured and checked the entire build. If it was done by one of your buddies and you are comfortable with what is done, no big deal.

So you started it Sunday and it runs 9's? What is your combination?
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Old Aug 30, 2011 | 09:50 AM
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Originally Posted by 72VenturaII
He wasn't bashing, it is an honest question. If the motor was put together like that by a professional shop I would question everything that was done to the motor and would have completely pulled it apart, measured and checked the entire build. If it was done by one of your buddies and you are comfortable with what is done, no big deal.

So you started it Sunday and it runs 9's? What is your combination?
Hahahahaha, no it hasn't run anything yet! It's just wishful thinking on his part just because of what he has into it!?? Once again, just alot of speculation....
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