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Old 09-23-2005, 09:41 AM   #1
VTsuby
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Black

Default Wrist pin removal question

I have an eg33 that I'm breaking down and the front pistons wrist pin don't seem to want to come out from the front are they tapered and can only be pulled from the rear?
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Old 09-27-2005, 11:25 AM   #2
cdigerlando
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Have you tried posting on www.subaru-svx.net? They might be able to help you better.
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Old 10-10-2005, 10:27 AM   #3
cdigerlando
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Default wrist pin removal

I don't know much about breaking down this engine, but I have been told there is a way to enter the cylinder from the side through a plug port to remove the pistons without taking apart the block. Do you have a subaru maintenace manual? That would probably be best to check out before doing anything.
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Old 10-10-2005, 10:42 AM   #4
Matt Monson
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Actually cdiger,
You have to pull the wrist pins before you can split the block.

VTsuby,
There is a special tool for pulling the pins. You can make one of your own pretty easily. But those pins can get really stuck in there over time. Lots of soaking them with PB blaster usually does the trick. But sometimes you have to heat them with a torch...
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Old 10-10-2005, 01:43 PM   #5
Hayes
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My manual (Forester 2.5L) shows to remove you first pull the seals. Then remove the circlips in the pin bore. Next using a simple tool pull the pins. The picture of the tool is not good but, appears to expand inside the pin bore. Should be easy to makeshift something.
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Old 10-10-2005, 02:07 PM   #6
damianq
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FWIW, no wrist pin is ever tapered. One you remove the block plate & remove the circlip, tilt the block and soak the ones you have access to with non-silicone based penetrating lubricant. It can take all night for it to leak down over the pins. Be patient & they will remove w/ ease. Then flip the block over & do the same to the other side.
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Old 10-10-2005, 06:46 PM   #7
Matt Monson
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actually,
there are a large number of manufacturer's who use wrist pins that are larger in the center where it passes through the rod, but have them taper and the ends...
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Old 10-10-2005, 10:44 PM   #8
VTsuby
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Thank you for your replys. I have removed the wrist pins. I'm more accustomed to v8's where you need a long 7/16 socket and wrench not a flashlight, dowel need nosers, 90 degree needle nosers, custom 12mm bolt with two nuts to remove plug, special socket piston popper and belated rum and coke.......

What a motor to pick to be my first boxer that said v12's do exist.....
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