CiGHonda

Hi,

Hello Honda world, I picked up a "used" 94 accord coupe with 248k on the clock. There was some recent engine work, so I'm trying to identify exactly what I have.

The head is freshly rebuilt, but the block says F22B6. Searches give varying results, so I am trying to figure out which block this is. The original timing cover shows F22B1

I also want to verify the trans code.

I've always had a soft spot for older Accords, I learned to drive manual on a 92 Cammed SOHC.

UPDATE: Further digging F22B6 is the Honda Odyssey engine, but as from I have seen does not come in VTEC. I have found other complaints about poor performance from the F22B6 block in the Accord B1. The question now is what does a VTEC SOHC Head on a B6 Block become as far as compression and power rating?

Odyssey F22b6: 140HP 145TQ Non Vtec SOHC 8.8:1 P08 ECU
Accord US EX F22b1: 145HP VTEC SOHC 8.8:1 P0A ECU
Acura CL F22b1: 145HP 147TQ VTEC SOHC xx:1

By Comparison:

Prelude JDM F22b: 160HP 145TQ Non Vtec DOHC 9.8:1
Euro Accord F22b5: 150HP Non Vtec SOHC 9.8:1

GhostAccord

The F22B1, 2 & 6 blocks are exactly the same. Dropping an F22B1 VTEC head on it shouldn't change the compression. it should be rated the same as a B1 for power.

That really depends on what else, if anything, has been done to the block and head. If they were milled and decked the compression could be a bit higher. If they used different internals things would change as well.

CiGHonda

I would agree. I didn't get to update the thread but being a B6 should be no different compression wise. I originally thought B6 was JDM, but I see that JDM just says F22B.

The block that I have appears used, dirty. The head is rebuilt. So I am thinking they took a used odyssey engine and put a rebuilt F22B1 Vtec head on it to make it all accurate.

The thing is, the performance of the engine is terrible. No fault of the block of course, so I'll have to run through the usual checks to see what is going on.

- Map sensor leak (o-ring) (fixed)
- Exhaust manifold cracked
- New distributor already installed
- FPR appears operational
- Compression check (not done yet)

Update 3/24: I've been getting a miss around 2000. You can hear an occasional misfire. I pulled the plugs which were fairly black. I installed new Iridium plugs and the miss appears to be gone. The 4th plug was the blackest, while #2 was pretty clean. I wonder if these injectors are not all flowing equally being that they are so old. The low end is MUCH improved but the top end is still lacking. I realize that this is not a powerful engine, but I would expect it to not fall flat at 4000. Something is still up.

Fitz Williams

iTrader: (1)

You said that the B6 motor was non-vtec? I believe those came with a plug in the block where the oil passage for the vtec is. If this plug was not removed then the motor would be continuously in the "limp" mode with the vtec cam lobes not actuated. This would make for terrible performance. Make sure the oil is getting to the vtec solenoid.

GhostAccord

X2 on the Oil control orifice in the Non VTEC B2/B6 blocks. That has to be removed in order for there to be enough oil pressure to engage the VTEC rocker assembly.

That being said I'm pretty sure that the check engine light would be showing for a code 22, VTEC Pressure switch, if the oil pressure was too low!

Is your check engine light on? If it is you should retrieve the codes and see what's up!

CiGHonda

Interesting. While there is no CEL, the setup seems to fall flat right at 3500RPM. I can get the revs higher in gear but it doesn't go anywhere. It's like the engine is confused.

I have seen other F22b1 videos and they rev freely all the way up to the redline.

So something is up. This lack of VTEC sounds about right.