ok, I've had this busted H23A1 sitting in the garage for nearly a year now, it's time to start getting it ready to put in my '90 Accord.
The problem is: the engine was more trashed than I originally thought when I picked it up (w/ the harness, ecu, and axles for $400) .

This was about one year ago: The guy i got it from said it had a pretty good knock(yeah, right), but I found 2 broken rods(#2 and #3) when I started tearing it down. Must've spun a rod/main bearing (or two) by over-revving.... The only damage to the block appears to be small notches at the lower 1/2" of the cylinder sleeves from when the rods let loose. A local machine shop told me this won't affect compression rings or oil seal.

Fast forward about a year: A friend of a friend needs the engine replaced (broken timing belt-> bent valves) in his 91 Accord EX. I found a clean F22A1 eng/tranny swap from a 94LudeS. He payed & picked it up. Then I swapped the motor & clutch out for him. In exchange for my labor, I got to keep the busted F22A6(w/ AEM tru-time cam gear) and the LudeS tranny. So now I have a good crank, rods, pistons, bearings from the F22A6.

Anyway, my question is: will the crank and rods from the F22 fit in the H23? I have heard they are interchangeable but wanted to get someone's confirmation.

I know the pistons are different diameter...

 

from my research the f22 and h23 crank and rods are identical, same part number same everything. i ,know for a fact that the f22a1 and f22b2 and b1 have the exact same crank and rods as the h23, but i have never looked any info up about the f22a6, but honda pretty much made all the f series the same except the f20c but thats a whole other story.

sounds like you can peice a good engine together,

 

Yes, the crank is the SAME EXACT part as the H23 crank. Not sure about the pistons and rods. If you need a set...let me know. I have a spare set available, pistons and rods.

You will need to see if a machine shop can line-bore the block to fit the oversized pistons you buy.

Let me know how the process goes. I am thinking about doing the samething. However, my sleeves are perfectly fine. I just have one slight spun bearing.

 

nice. thanks a lot. I actually just went down a couple threads and found a post with almost the exact same answer (about accord/lude crank).

So anyway. I went to http://www.slhondaparts.com to confirm, and the main bearings, rod bearings, and rods, and cranks all have the same part #s between 90-95 accords/ludes.

I did notice that the crankshaft part # switched from 13310-PT3-315 to 13310-P0A-000 sometime around '93. In fact, the '93 lude Si lists both numbers.

Anybody have an explanation for that? Any improvements in the newer one? They have to be dimensionally identical to use the same bearing though, so I guess it's not a big deal...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AndyD &raquo;</TD></TR><TR><TD CLASS="quote">
You will need to see if a machine shop can line-bore the block to fit the oversized pistons you buy.

Let me know how the process goes. I am thinking about doing the samething. However, my sleeves are perfectly fine. I just have one slight spun bearing.</TD></TR></TABLE>

here's the the thing though: if the engine only spun 2 rod bearings, and the main bearings are fine, does the block's main crank journals really need align-boring?

I know it's like a $200 job, and I don't want to spend the money unless it really needs done. And as far as oversize pistons, I guess I'll wait to see how this guy's scenario turns out first: https://honda-tech.com/zerothread?id=800645

 

if it spun ROD bearings your fine, worst case the crank is FUBAR, but if it spun a main thats when you need to do alighn boring and over sized pistons.

thing is, if it was an h23 most of the time the spin mains, and are the extra toursion can cause a rod to snap. make sure you look into it