Can you list any of the details of "strange details on rebuilding these motors" or explicitly elaborate on what the aforementioned mechanics do that are special? I've seen their posts and earned reputations over the years (wadzii in particular has been especially helpful to me) and agree that they are dependable mechanics/techs but to state that there is a high degree of risk not to go to them is horse shit IMO. I've personally rebuilt and have had an F20 rebuilt by a local shop with no failures to date.

My car is still running with one-size-fits-all bearings (ACL), franken parts from 3 separate failed motors over 30k miles later and counting.

 

Anyone that has experience with building Porsche motors, I would trust with the S2k engine because Porsche uses a very similar type of FRM coating on the cylinders. In fact theirs requires a bit more prep work to do the honing than ours.

 

I love when people think their single point of data (ex: well my motor is fine so blah blah blah) debunks all collective data.


From what I understand, and I'm not a mechanic, ACL bearing come "with a size that fits an F22, or whatever" and a lot of people throw them in their rebuilds thinking that they will last when they dont understand that our motors CAN have different size bearings between the cylinders. 10k miles later and boom, you need a rebuild. However, you may have been lucky and had all the same size and gotten the correct ones from ACL that matched. Some (a lot) of mechanics don't realize this.

There are also well documented ERRORS in the engine rebuilding part of the F20 and F22 Haynes manuals, that have never been corrected. So if Joe Shmo goes to rebuild an F22 and wants to do it "by the book" there is still a chance it will end up poorly.

Edit: There is actually a recent thread in the under the hood section that explains a lot of this, check it out

 

I too would like to hear what makes the S2k motor rebuild unique that other Honda motors don't have. I understand there's error in the service manual, but those are typographical. I have not yet seen anyone mention a feature the S2k motor has that others do not.

 

I love when people think their single point of data (ex: well my motor is fine so blah blah blah) debunks all collective data.
I wasn't citing my rebuilds as a means to 'debunk' your 'data', it's context to my experience in regards to rebuilding these exact motors. I have 2 disassembled shortblocks right now as well waiting for rebuilds (I'm working on an EVO at the moment, and i'm a hobbyist not a mechanic)

From what I understand, and I'm not a mechanic, ACL bearing come "with a size that fits an F22, or whatever" and a lot of people throw them in their rebuilds thinking that they will last when they dont understand that our motors CAN have different size bearings between the cylinders. 10k miles later and boom, you need a rebuild. However, you may have been lucky and had all the same size and gotten the correct ones from ACL that matched. Some (a lot) of mechanics don't realize this.

It's not luck, I think you're simply not informed (and no one expects you to be if you're not a mechanic) as to why there are different sizes. I had a set of main, rod and thrust bearings laying around that I got with other engine parts I bought and mic'd out acceptably across all crank surfaces so they went in. It's really not that difficult.


There are also well documented ERRORS in the engine rebuilding part of the F20 and F22 Haynes manuals, that have never been corrected. So if Joe Shmo goes to rebuild an F22 and wants to do it "by the book" there is still a chance it will end up poorly.

Edit: There is actually a recent thread in the under the hood section that explains a lot of this, check it out

Can you elaborate on the error? Tolerances, clearances, torque specs or wat?
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Ops, my mistake. It looks like AP2 crankshafts are discontinued while the 2.2L short blocks are still available, luck of the draw at this point it seems.

 

Ops, my mistake. It looks like AP2 crankshafts are discontinued while the 2.2L short blocks are still available, luck of the draw at this point it seems.
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I've never heard of the AP2 cranks ever being discontinued.

 

Ops, my mistake. It looks like AP2 crankshafts are discontinued while the 2.2L short blocks are still available, luck of the draw at this point it seems.
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I've never heard of the AP2 cranks ever being discontinued.
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http://www.hondaautomotiveparts.com/...FT&vinsrch=yes