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Replacing the Pistons

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Old Jul 14, 2010 | 10:53 AM
  #31  
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Sounds like a plan.. it's been a little while since I built a shortblock, but seems like not a whole lot has changed. I remember problems with honda b series sleeved block sleeves sinking, leaking, not sealing at the headgakset.. I'm getting a feeling of deja vu reading these threads. lol I do remember many friends having issues with non-oem gaskets sealing as well, and recall ultimately going back to oem as the "fix." I remember something that some people will recommend is spraying the headgasket with a few light coats of copper spray in terms of helping it seal.

Filing down the rings is generally a piece of cake. You put the ring in the cylinder, measure the clearance, then remove it and file it down. Repeating these steps until the clearance is correct. About the only thing that you gotta watch out for/which made me nervous is popping in the pistons and rings. You don't want a ring to be out of position (the gaps for the rings are deliberately placed) or worse a ring to pop out of place and scuff the wall. Best of luck.

Oh ya, it would hurt to check the bore of the cylinders while you got the pistons out. Just to be extra sure.
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Old Jul 14, 2010 | 02:04 PM
  #32  
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Rule of thumb is new rings - new hone, old rings - old hone.

As for the bearings, I use ACL bearings, they work great imo.

The color codes are stamped on the block.
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Old Jul 14, 2010 | 03:19 PM
  #33  
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You still need the codes for the acls though?
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Old Jul 14, 2010 | 06:38 PM
  #34  
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No acl's are only one size, that's why I'm not a fan. It's a back and forth debate. I'll stick to oem.
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Old Jul 14, 2010 | 06:41 PM
  #35  
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Originally Posted by m R g S r,Jul 14 2010, 10:38 PM
No acl's are only one size, that's why I'm not a fan. It's a back and forth debate. I'll stick to oem.
i used oem when i built my sleeved h22 block. oem works great, why go anywhere else?
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Old Jul 14, 2010 | 07:38 PM
  #36  
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I've used ACL's on EVERYTHING I built and NEVER had a bearing failure, ever.

I plan to use them this time around as well.

They are the "average" between the clearances. Heck, my cousin I just sold the Si to, did a complete rebuild, and made 850whp on 40lbs of boost w/ACL's on a B18, bored to a 2.0.
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Old Jul 15, 2010 | 11:40 AM
  #37  
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after seeing a few of these blocks i wouldnt slap new stuff in there

my old block that was always stock had a shit ton of taper and was way out of round.
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Old Jul 15, 2010 | 11:46 AM
  #38  
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Originally Posted by wadzii,Jul 15 2010, 11:40 AM
after seeing a few of these blocks i wouldnt slap new stuff in there

my old block that was always stock had a shit ton of taper and was way out of round.
Well I plan to mic everything first before i just drop crap back in.
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Old Jul 15, 2010 | 12:26 PM
  #39  
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do you have a deck plate?

there was a HUGE difference once the mains and a deck plate were bolted to both my blocks.

with nothing bolted together they were perfect....
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Old Jul 15, 2010 | 06:18 PM
  #40  
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Hmmmm that's weird. Even following the correct torque sequence?
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