When I got my JDM H22 back in like '03, I got it with the LSD they sent me this tranny. I just realized its an Accord SiR-T tranny from a 98-00.

My question is, how different are the internals on the T2T4 from something I can get here? If I ever have to replace synchros or gears, am I going to have a hard time finding parts?

If so, where would I even look for parts?

 

From what I was told, the T2T4 ratios are the same as the 97-01 Prelude tranny; so I assume they're the same or very similar?

I'm currently running a JDM T2T4 LSD trans on my JDM H22A too.

 

So it might seem that we could use the sychros and gears from the 97-01 if we ever have grinding?

I'm starting to ask these questions because I'm in the process of building a 400+ hp setup and want to know what my options are if I have trouble with my tranny.

Better to ask before I run into the issue than later ...

 

They're not the same, this site though has many parts for just about any Honda trans, you can even get the part # from there and see if it's available from the dealers here as many transmissions will share the same synchro sets.

http://www.autodynamics-honda.com/hotrax.html

I ran all the part #'s they gave me in a email for my T2W4 and found that it uses sleeve sets from a couple of different transmissions. Vinuneuro told be a while back that Pirate McFred ordered from them I assume for JDM trans parts with success.

 

The T2T4 uses the same bearings, seals, synchros, and sleeves as the USDM 97-01 M2Y4 Prelude base model. The gears however are a different ratio so you may run into problems finding them.

 

^^ Good info to know!! Thanks for the help guys!!

 

The gear ratios are the same as the M2Y4.

Infact when I was buying an F20B to put into my Prelude, I skipped the tranny because the gearing was the same. I saw no need to pay $1000 for an LSD.

T2T4 = M2Y4 with LSD.

T2W4 - that has shorter gears with LSD.

 

Good to know that the gears are different ratio.

 

Yeah...about that.





My M2Y4 went out, and the local importer has an M2S4 which they claimed was from a JDM 5G, which I didn't believe. low and behold as it says in this chart they were telling the truth, but it still has the same gearing as the 4G USDM H23A1, so I passed.

 

^^^ Good info! According to this chart, only 5th gear has a different ratio on the T2T4 and M2Y4. I have the tooth count for each gear in my notes from the last T2T4 that I built. I will look it up and post it for reference.

 

T2T4: C/S - 46/45/39/30/26 M/S - 14/23/29/29/33

M2Y4: C/S - 46/45/39/30/26 M/S - 14/23/29/29/32

1-4 are the same but if you ever need to replace the 5th gear you can use the USDM M2Y4 5th gears as a set (both C/S and M/S). Even though both transmissions use a 26T C/S 5th, the gears are different due to the pitch angle of the teeth.

Hope this helps - good luck!

 

I just hope I don't have to do much work on it this year, I would like to get through the first season on the turbo motor without destroying a tranny ... lol ... I know its not likely, but I'm trying to be an optimist here

 

 

theres only conversion kits for B serie transmission to be used with H engine

 

Hey this doesn’t have to do with the conversion kit however, I noticed the date from this year and figured I’d try my luck. do you or anyone know where I can find the bolts that go through the tranny holes and thread into the h22a block? I have checked hondaautomotiveparts.com and I can’t find them but found other hardware I have been looking for. I need the bolts to bolt my block to my engine stand. I bought a ek coupe and a bare block and head I have started from nothing and have all internal parts for the build but I’m currently held up by these bolts. I have a helms manual and can’t seem to find the thread pitch or anything in there. And I have checked online and can’t find what I need. Thanks.