Wrist pin - Team Camaro Tech
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post #1 of 6 (permalink) Old Apr 5th, 04, 06:41 AM Thread Starter
 
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Hi again,
I have noticed that my rod is not in the center between the piston walls inside.
The wrist pins is pressed in to the rod!
This is not good I think. Can i adjust this by myself by force the wrist pin to center a little or do I need to heat the rod?
Br jimmy
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post #2 of 6 (permalink) Old Apr 5th, 04, 06:48 AM
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Do NOT heat the Rod while assembled

We need more info on how you are viewing this assembly.
Is the piston in the bore and the rod on the crank?
Are you looking up from the bottom (or down if the engine is on stand) in the bore?

The pin is press-fit and should be centered on the rod. It may shift back and forth in the piston if the assembly is removed from the bore and held in your hand.
The rod should be fairly centered in piston, when viewed in the bore from the bottom of piston side.

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post #3 of 6 (permalink) Old Apr 5th, 04, 07:54 AM
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Bill
 
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Jimmy,
What pistons are you using ? If you are trying to use a piston with a snap ring, like the Keith Blacks, you cannot use the snap ring if the piston is pressed on the rod. The rod has to be able to move back and forth to center itself.
If you are not using a piston with snap rings, it is not real critical for the pin to be exactly centerd, but it should be close.

Bill Koustenis
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post #4 of 6 (permalink) Old Apr 5th, 04, 08:39 AM Thread Starter
 
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Hi,
Thanks for your support..
When I have the WISECO piston (with the rod mounted)in my hand I can push the piston untill it is nearly touching the right piston wall inside, then it is stopping cause of spirolocks. When I push the piston to the left it passes the center approx 0,75mm and then raches the spirolocks.
This means that wrist pin is not centered!
I hope you understand my english
Br jimmy
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post #5 of 6 (permalink) Old Apr 5th, 04, 10:01 AM
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If you have pressed pins/rods you do not "need" the spirolocks.

Your rod side clearance on the crank should not allow that much movement once it is assembled.

Royce (NO XQSSS) Bradley

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post #6 of 6 (permalink) Old Apr 5th, 04, 01:53 PM
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Jimmy,
Just want to repeat what Royce said. Take the spiral locks out if you have the pins pressed in the rods or you will have major damage when you start the engine. The spiral locks are only used when the pin is a floating fit in the end of the rod. Take the locks out !

Bill Koustenis
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Waldorf Md
1971 Chevelle "Heavy Chevy" original owner


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