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Old 01-08-2019, 10:25 PM   #1
BreckAConner
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Need help identifying block

Good Evening,

I recently purchased a Ody with a supposedly JDM H22A, I found a timing cover in the van that said H22A4. The previous own bought the motor from a guy that told him it was JDM. Sad to say the idiot who owned it previous to the guy I bought it from I can only assume it was him that shaved the numbers off the block and painted it black. So it doesn't say H22AX or whatever on the front and the numbers under the half shaft are gone. I did find these numbers next to where the half shaft plugs into the transmission, I'm not sure if it's just a serial number or what.

6A2541(3) or (8)


Last edited by BreckAConner; 01-08-2019 at 10:28 PM.
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Old 01-09-2019, 02:54 PM   #2
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I've been reading around, I guess people shave the stamp when they've stolen motors I guess?? Sounds dumb to me, but I was thinking maybe the guy took a F/H block USDM put a JDM head on it, or vice versa and didn't want to look dumb having a USDM block with a JDM head or what not.

Are there any other ways to tell if the head or block are JDM? If I can find out that'd be awesome so at least I know what I have, it's a shame whoever did this to the block.
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Old 01-09-2019, 06:59 PM   #3
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Can you see the dates on when the block was made above the manifold pipes?
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Old 01-09-2019, 08:24 PM   #4
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Or what is stamped on the head. Unless the guy told you they did a head swap. I tried googling to see if I could find any other way of looking for a stamp on the block and nothing came up.
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Old 01-10-2019, 12:44 PM   #5
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Originally Posted by Grumpys93 View Post
Or what is stamped on the head. Unless the guy told you they did a head swap. I tried googling to see if I could find any other way of looking for a stamp on the block and nothing came up.
I see P13 stamped on the head. I figured jdm or not it had stamped p13 but I'm not sure.

I will also check above the exhaust manifold for a date.
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Old 01-11-2019, 11:44 AM   #6
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Old 01-11-2019, 12:27 PM   #7
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Well I can tell you it’s not a Euro R as those are stamped PDE. My H22a is stamped p13 hf-1 and my block is stamped no.3 97 and the head is stamped with arrow pointing to 12 and the number 97 on the inside. So it seem’s someone may have done a head or block swap on your motor. (This is me guessing).

I can’t find a straight answer if both JDM and USDM H22 we’re stamped differently or not. May get more answers once you crack open the block.
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Old 01-11-2019, 04:08 PM   #8
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Originally Posted by Grumpys93 View Post
Well I can tell you itís not a Euro R as those are stamped PDE. My H22a is stamped p13 hf-1 and my block is stamped no.3 97 and the head is stamped with arrow pointing to 12 and the number 97 on the inside. So it seemís someone may have done a head or block swap. (This is me guessing).

I canít find a straight answer if both JDM and USDM H22 weíre stamped differently or not. May get more answers once you crack open the block.
I was thinking of just tearing it down just because I have no history of the motor and it's pretty sketchy looking.
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Old 01-11-2019, 09:24 PM   #9
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If you have a few bucks to potentially waste go buy some window etch acid from a hobby store or online. Apply a coat to the area and wait, keep doing this and see if anything shows up. The stamped area is denser due to compression, and will absorb less acid, possibly showing you the code.

Worst case is you are out a few dollars and a little time. Best case you figure out what block you have.
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Old 01-11-2019, 09:32 PM   #10
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Also, the picture of R H DOT , where on the block is that? Looks like front where the slave cylinder bolts on?

I have a JDM h22a and EDM h23a3 sitting in front of me and neither have that stamp anywhere that I can see, but that R H DOT label is common on USDM Honda parts.
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Old 01-11-2019, 10:54 PM   #11
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Quote:
Originally Posted by bjaccord View Post
Also, the picture of R H DOT , where on the block is that? Looks like front where the slave cylinder bolts on?

I have a JDM h22a and EDM h23a3 sitting in front of me and neither have that stamp anywhere that I can see, but that R H DOT label is common on USDM Honda parts.
This is a good point. I just looked there on my h and I donít have the R H DOT stamp either.
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Old 01-12-2019, 12:16 AM   #12
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This is a good point. I just looked there on my h and I donít have the R H DOT stamp either.
It has to be a USDM block then. What about the intake, it has a block off plate on the front, I forget what goes there, but I have a few H intake manifolds, but I don't believe it has a block off plate there.
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Old 01-12-2019, 08:28 AM   #13
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Quote:
Originally Posted by BreckAConner View Post
It has to be a USDM block then. What about the intake, it has a block off plate on the front, I forget what goes there, but I have a few H intake manifolds, but I don't believe it has a block off plate there.
My intakes does not have that as well. But I believe that is the air booster valve. I can’t remember the exact name.
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Old 01-12-2019, 09:27 AM   #14
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Ya... makes sense that they would shave it. Trying to sell a USDM block as a "red top". & ya, that thing does look sketchy. I wouldn't be surprised if the inside looked as sketchy....
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Old 01-12-2019, 10:38 AM   #15
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Ya... makes sense that they would shave it. Trying to sell a USDM block as a "red top". & ya, that thing does look sketchy. I wouldn't be surprised if the inside looked as sketchy....
I knew it wasn't a red top because that paint job on the valve cover is terrible. Then the intake is completely different from a red top, it has to be a h22a4.
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Old 01-12-2019, 02:59 PM   #16
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It could be an h22a4 block with a H22a head. Since the numbers don’t match. But sanding down the numbers just to claim it’s a JDM H22A seems a little extreme in my book. If they went that far to just hide that’s its a USDM I would want to crack open the block and see what’s going on.
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Old 01-12-2019, 11:08 PM   #17
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Quote:
Originally Posted by Grumpys93 View Post
It could be an h22a4 block with a H22a head. Since the numbers donít match. But sanding down the numbers just to claim itís a JDM H22A seems a little extreme in my book. If they went that far to just hide thatís its a USDM I would want to crack open the block and see whatís going on.
When I get another nice day I'll tear it down and take more pictures.
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