I found an online calculator and graphed out both the stock trans and the H22 trans utilizing the stock F23's redline of 6250. first gear is pretty close, just a little shorter, but 2nd is a good deal shorter and 3rd is way shorter. right now once you get into the upper RPM's first gear already pulls good, 2nd is alright and in third gear the car just kinda falls on its face. of course freeway cruising isnt gonna be as nice anymore, but we dont take it on the freeway much anyways.

looks like with the stock trans, the gears top out at 32/58/89/117/154, and when I shift the revs drop to about 3300 into 2nd, about 4050 into 3rd, about 4750 into 4th. I don care about 5th because there isnt anywhere near the amount of power to pull 5th, Im sure Id pull all the way through 4th but it would take MILES!!! and theres nowhere to do that, so its not necessary

with the H22 tranny Ill top out at 30/52/74/94/116 and the revs will drop to 3600 into 2nd, 4300 into 3rd, and 4850 into 4th.

so shifting into 2nd and 3rd I will be a few hundred RPM's higher in the hp curve when beginning the gear, which on its own is an improvement. then of course there is the shorter gearing letting me pull each gear much faster. each gear tops out sooner though...

and cruising at 85 on the freeway Ill be at 4600 instead of 3450...



we are planning on the H22 later on, but I have seen H22 trannys on craigslist for as low as 200 bucks around here and next time I see one I think we are gonna go get it. if we later dont get an H22, we are probably just gonna get a bisi cam for the F23, get a nice header (already got intake and exhaust), maybe a lightened fly as well and call it a day.

I did search but couldnt find anybody whos done it.

1. will just the H22 tranny make the car considerably quicker (no miracles, but maybe at least a few tenths to a half second off a 1/4) I know that a half second is alot, but I also know a kid who had an H22 in his CB7, but to the stock tranny, and even with a 75shot only ran a 15 flat (did have AC on though as well as the automatic version H22) but Id assume the 75 shot would more than make up for the AC, stereo system, and 15hp less engine, so the trans must just suck for drag racing and if a stock H22 to the correct 5 speed pushes a CB into 14 sec territory, I would think that the trans could easily cut a decent amount of time off your ET.

2. would a ~10.5:1 F23, bisi 8.9lb fly, bisi level 2 cam, H22 TB, I/H/E mated to a M2F4 tranny be comprable in acceleration compared to a 100% H22 swap?

 

i put an h23 trans on my f22. differences in the gear set, but a lot shorter than the F series trans. The acceleration is a lot quicker in all gears imo. Even in 5th when I am at a 65 cruising speed (even though you said you would never hit 5th around your parts), it just picks up and goes.

Definitely need to be careful though for two reasons. First, that H22 trans is most likely not in good condition. They stopped making them (obviously), and with each passing year, is another H tranny pulled out of a car that was just dogged, sold on CG for dirt cheap, and you get the crap end of the deal. My H23 is in that shape. Lasted a few weeks on easy driving (breaking new clutch in), and then 4th gear started grinding and popping out. So I am sending it away to synchrotech trans here in the next few weeks. You should look into them, get a completely rebuilt or fully built trans for a great price.

Second problem, is missing a shift. Now I don't miss shifts, and I am not saying you do, but if you just so happen to, you have little to no cushion on the RPM range that an H does if you hit the wrong gear. Just a thought.

 

not sure what you meant exactly. do you mean missing the next gear and just revving in neutral? if so theres the rev limiter for that. and I actually have dont that but only a handful of times over quite a while of driving. if you mean accidentally going from 3rd back to 2nd instead of 4th and then rev limiter or not the revs will climb to about 8500, nope, I dont do that, or I havent. probably will tomorrow now that I said I dont...

and I dont mean I dont use 5th, use it every day. I just mean if Im on it good winding out each gear then I wont hit 5th. usually done before I even wind out 3rd.

and I do know I could get screwed, but there are deals out there. and if I did, I would just have to put the stock tranny back in, and pay to have the H trans gone through...

 

yeah, thats what a miss shift is. like going from 3rd to 4th, but accidentally going into second. or 2nd to third, but going into 1st. you do that while you are getting on it a little bit and you can count on spinning a bearing or something else to the bottom end.

and i know what you meant for the about 5th. I was at about 3 grand 60 mph. now i know the h22 fifth is shorter, but it has the same final drive as the h23 does.

 

then what would you call it when you are trying to hit 4th and either let the clutch out early and grind a bit and you end up just giving it gas while in neutral before you catch yourself and get it back in gear. or you kinda hit the gate between 4th and reverse and again just rev in neutral. thats when I would say I missed 4th. however I would probably say I missed 4th as well if I hit 2nd instead... actually Id probably say *^$@ thats second! lol

synchrotech didnt show an H22 trans but a rebuilt H23 trans for 750 with return shipping for the core isnt too bad.

do you got any stories about a buddies car you just couldnt beat and then after the trans swap you can leave him behind now? I am sure I will need more but I need this thing to end up quicker than a 04 (I think) ser spec V with I/H/E. right now it is very depressing when any attempt is made to keep up. we only got exhaust on the accord so far though. we are puttin CAI on it in the next week or so, but were gonna hold off on the header just in case we decide to do the full H swap later on.

 

email synchrotech, they can get you a fully built one with their lsd and all. will cost a little more than that, but for the price, with all carbon synchros brand new, cant beat that.

all i know is my h23 pulled! could only imagine what an h22 trans would do. well, that and just a full blown h22 swap. i just cant run an h22 trans right now, rpms would be wayyyy to high.

 

well, looking around I can get the T2T4 LSD tranny from the F20B for 850, another 850 for the F20B and 150 for the ECU and it saves the OBD2/1 troubles...

and we are pretty close to CA, so shipping shouldnt be too bad from H motors. might just buy that trans first, then later get the eng/ecu. I have lots of family over there so I could just turn a vacation into a tranny pick up, if HMO lets you pick-up

 

It's what you said, a gear grind or you could also say you missed the gear. I personally refer to shifts that result in an undesired gear "miss-shifts."

Man, there are a surprising amount of people trying to beat Spec-V's with their Accords on H-tech...

I'll tell you right now, it'll take more than gears. The Spec-V's engine and trans (as I'm sure you know) are a pretty damn good combo and help that little Nissan pull like hell for an N/A factory 4 banger. Also, that car responds well to exhaust (more the header because of the pre-cat) so you are looking at a good gain on their end. Where as with our motor, exhaust doesn't do jack really. The intake will do a little something for you, but basically bolt-ons won't get you very close to your victory.

You will need something close to a built N/A setup, forced induction, or a swap to come close. The Nissan is lighter, it's engine produces power earlier, and it's got the benefit of the six speed. The setup you mentioned (with the Bisi goodies) might get you closer... though I think you'll still come up short.

When I used to do friendly "races" with my friend in his 02 Spec-V, he would leave me behind pretty badly even if I was in my powerband (My car: 98 Accord LX 5 spd).

 

yeah, a lot of those engine places love pick ups. and i know some of the include shipping on the cost of the engine, so that saves that hassle. And the long anticipated delivery haha.

grab that trans and send it to synchrotech if i was you. just to be on the safe side. Nothing like getting in it to go drive it once its all done and something grinds. Or a bearing is shot. Better safe than sorry.

 

what did you have done to your LX?

the car Im messing with is a 01 ex coupe. and yeah, ive driven the spec v, it is pretty damn quick. that torque is real nice!

 

I got my B20 from HMO and at least back then the shipping wasnt included in the price.

 

I have an intake so nothing really. It's a sedan so it doesn't look like it's going anywhere fast and it doesn't anyway.

Your coupe isn't too much lighter so you're still quite a bit heavier. If you are going to stay N/A the shorter gearing will definitely be important so I think that's a good place to start.

If you are seriously considering the H22 swap I'd hold off on anymore bolt-ons for the F23.

 

thats why were only going to do the intake right now. no header. were just getting one of those 40 bucks shipped cold airs off ebay. Ive bought 2 so far and Ive gotten lucky so far with fitment. the exhaust I bought once needed plenty of modding to fit right though. it was so close in every area I modded though that I dont think they sent me the wrong part by mistake...