My brother and I were bench racing the other day and were wondering what parts are interchangeable between an f22 manual trans and h22 manual trans? Can I stuff h22 internals(gearset and diff.) in a f22 case?

 

You can't use most of the H22 internals in an F22 case. Some of the parts will fit like the diff (except OEM viscous type LSD) and final drive but the forks and shaft gears won't fit. The forks are set at a different height for the detents.

 

ok thanks, we were wanting to build a N/A drag car out of a cb7 and must use the stock motor and trans case. Is there a way to make a f22 trans better for drag racing?

 

The M2S4 H23 transmission from a 1992-1995 Prelude Si uses the same cases as the 1994-1997 F22 Accord but has closer gears and a faster FD ratio.

 

I appreciate your help and sorry about my lack of knowledge on honda trans names. Im a chevy guy who recently became interested in fwd drag racing. So a 94-97 accord trans will accept the h23 trans gearset, diff, etc? That may work for us, what about 90-93 accords with the F22?

 

You are better to stay with the 1994-1997 Accord model if you want to use the cases. You can retap the studs to fit the 1990-1993 set up. The early model 1990-1991 has different sized bearings and the 1992-1993 has different oil guides. It is possible on a 1992-1993 F22 trans but it will take some tweaking. If you get a M2S4 H23 transmission it will bolt right up and all you will need is a LSD and Carbon synchros.

 

Rules state trans must be from the vehicle, so in order to run a 90-93 accord we need to use the existing trans, but you can build the trans. So there aren't any quicker gears for the accord?

 

You can change the stock 4.06 FD to a 4.266 FD set in the 1992-1993 Accord. There is also an aftermarket 4.64 set available.

 

I have a 93 prelude with a h22 motor. I want to know will a 94 accord f22 manual tranny fit into my prelude with the h22 without any major mods?

 

Yes the F22 transmission should fit right in.

 

I know the gear ratio will be diff than a h22, but as for fitting right in, everything in the prelude will be compatible with the f22 tranny?

are there any mods needed to be done?

thanks for your help

 

There is some info in this thread that is not quite correct, bits and pieces yes, but some not entirely true as to what will work and what wont.

Im tired of typing everything out... But you CAN use f22 **** in a H case. I am. A Saenz straightcut ACCORD set with ACCORD forks, H series 1/2 slider accord 3/4 and H 5th/R in an H case with H final and countershaft... The shimming and spacing had to be worked out but can work... I have run about every itteration of H series frankenstein bullshit that can be thrown together, and just am tired of always typing it out. Search is my advice, if you have questions about a specific scenario, PM me.


Here are a few examples:

All H series gears are not dimensionally the same, as mentioned before, it can ALL be made to work, but trying to run a H22 5th gearset on a h23 gearset wont happen unless you space the gears on the end of the shaft under the nut. I tried a M2f4 on the M2s4 1-4 cluster and it was too "SHORT". made a spacer and it worked fine.

F forks will not work on a H set due to the OD of the H 3/4 slider being bigger... (conversely, H forks wont work either unless you change the hub AND slider)

The 5th gear in the M2s4 is "taller" DIMENSIONALLY than the M2 B4/f4/a4/etc- hence the spacing i mentioned earlier...

M2B4 M2Af and M2F4 use exactly the same input shaft and 1/2 gears M2Y4 m2S4 and some others also share the same deal with the 3rd gearsets being the same (ratio)as well.

Also little known is that the RING gear in the ATTS trannys is the exact same as a JDM M2B4 LSD trans... When you break one, its good to know. Otherwise youll have fun trying to locate one... COunter is the SAME as any other H (4.226 or whatever).

Hope this helps and doesnt confuse you... Like I said if yo need help PM me, Id be much more inclined to answer specific ?s on the phone.


Brian

 

i got one questions, what carbon synchros will fit the M2S4

 

Our part number is SYN115-3. They are not listed on our website but we do have them.