Which Auto H22A to purchase

[Sabes]

Introductions. The vehicle I own is a 91 Accord EX-r. F22A6 Automatic Transmission.

Information found seems to point that life would be easier just to use an ob1 JDM h22a with jdm lsd auto along with matching computers for engine and trannsmission.

My questions are is there any particular engine or transmission to stay away from? Is the only difference between the usdm and jdm units the distributors and the slight bump in compression? Is there a difference between obd1 and obd2 auto trannys? And is this FRM sleeve shit going to make itself an issue in the future or does it pretty much last forever and you just change the rings when you get some blow-by?

I also saw the list in the faqs for keeping a/c and power steering, figure since it is still there that it is probably accurate.

Thanks,
Derek

[deevergote]

The only transmissions we can't use that come with the H22 are the ATTS units from the USDM Prelude SH and the JDM Prelude Type S. As far as I know, these are manual only. All automatic transmissions that originally came on an H22 should fit in your car just fine.
If I'm wrong, and there IS an ATTS automatic, stay away. It is unlikely to fit. That would be on the 5th generation only, so if you're buying from the OBD1 years, you won't have to worry.

The JDM H22 has higher compression and roughly 10hp more. Japanese engines are usually lower mileage (though that means they've been sitting on a shelf, or in a junkyard, for a very long time...) USDM engines may have taken a beating... as have engines sourced from other countries without strict regulations, such as Australia ("JDM" engines can be found there, and a shady dealer could be selling you a "low mileage" engine from Australia that has been driven just as much as one from the US could be!) I suggest sticking to www.hmotorsonline.com. They are the most trustworthy, by far.

The FRM sleeves are actually excellent. People just believe that they are bad because they are incompatible with most forged pistons. People that didn't understand the reasoning behind the "FRM is bad" talk started making up reasons... such as saying the sleeves are weak, or that they cause the engine to burn oil (my H22 has taken a beating, and if I burn half a quart in 5000 miles, I'm surprised... and mine leaks a bit!)

[92cb7turbod]

just go with manual its has so many advantages but thats just me but yea only the 97-01 came with atts

[deevergote]

just go with manual its has so many advantages but thats just me but yea only the 97-01 came with atts

If you have nothing useful to contribute to the conversation, please don't post.

[92cb7turbod]

sorry bro im new but if u get a motor from japan it less like to need stuff because alot of people do h swaps like im doin to my 92 coupe

[BLUBB2]

Dont forget the Auto P13 and P19 TCU.

[Sabes]

The only transmissions we can't use that come with the H22 are the ATTS units from the USDM Prelude SH and the JDM Prelude Type S. As far as I know, these are manual only. All automatic transmissions that originally came on an H22 should fit in your car just fine.
If I'm wrong, and there IS an ATTS automatic, stay away. It is unlikely to fit. That would be on the 5th generation only, so if you're buying from the OBD1 years, you won't have to worry.

The JDM H22 has higher compression and roughly 10hp more. Japanese engines are usually lower mileage (though that means they've been sitting on a shelf, or in a junkyard, for a very long time...) USDM engines may have taken a beating... as have engines sourced from other countries without strict regulations, such as Australia ("JDM" engines can be found there, and a shady dealer could be selling you a "low mileage" engine from Australia that has been driven just as much as one from the US could be!) I suggest sticking to www.hmotorsonline.com. They are the most trustworthy, by far.

The FRM sleeves are actually excellent. People just believe that they are bad because they are incompatible with most forged pistons. People that didn't understand the reasoning behind the "FRM is bad" talk started making up reasons... such as saying the sleeves are weak, or that they cause the engine to burn oil (my H22 has taken a beating, and if I burn half a quart in 5000 miles, I'm surprised... and mine leaks a bit!)

Did a quick run through google and it appears that there are no atts automatics and like you said they only come on the 5th gen anyways. Smart man, I wonder if those 24,xxx posts means you have been around a while lol

What gets me about the FRM sleeves is when i hear boring/honing costs. Damn near cheaper to just install some aftermarket sleeves. I did hear though that the sleeves do not handle excessive heat well though, such as f/i or high power n/a. Shed some light on that?

Dont forget the Auto P13 and P19 TCU.

so there is a p13 ecm for a standard and then a different one for an auto?
I was thinking I will just use the p72 chipped from hondata with h22 basemap. Then I can tune out emissions and alter my maps, etc.
Are there any other tcu's than the p19?
Also is the h22 auto tranny more robust than the f auto tranny? I would figure so since it has to handle higher shift points under more torque. Does the h22 auto have a harder, more solid shift than the f tranny or are ride qualities very comparable?

[deevergote]

The transmissions really aren't that much different in terms of strength. Unfortunately, neither the H22 or F22 auto transmissions are likely to hold much power... especially since the majority of them seem to have been abused over the years (most car owners don't even think to change their transmission fluid, and when they do, they use whatever is cheapest... Honda automatics are very sensitive to fresh fluid, and to Honda's specific formula.)

There is a difference in the ECU. The automatic ECU looks for input from the TCU for when the transmission shifts. I don't know the specifics, as I'm mostly familiar with manuals, but I assume that it cuts the power a bit during a shift, much as you would lift your foot off the gas when shifting a manual transmission.

Tuning for an automatic is a hassle. Many people refuse to do it (at least on this forum.) The chipped P72 is a good idea, but going through Hondata is a bit much. Unless you need all that they have to offer, you're paying far too much just for a chipped ECU and a basemap. A chipped ECU tuned with Crome, ECTune, or Uberdata will work just as well in most cases.

As for the FRM not holding up to high heat... sure, ANY stock sleeves aren't going to like a super-high revving N/A motor, or forced induction pushing more than 10-15psi. You'd probably crack an iron sleeve before the FRM sleeve, honestly.
FRM is what they used in the NSX's engine.

[Sabes]

The transmissions really aren't that much different in terms of strength. Unfortunately, neither the H22 or F22 auto transmissions are likely to hold much power... especially since the majority of them seem to have been abused over the years (most car owners don't even think to change their transmission fluid, and when they do, they use whatever is cheapest... Honda automatics are very sensitive to fresh fluid, and to Honda's specific formula.)

There is a difference in the ECU. The automatic ECU looks for input from the TCU for when the transmission shifts. I don't know the specifics, as I'm mostly familiar with manuals, but I assume that it cuts the power a bit during a shift, much as you would lift your foot off the gas when shifting a manual transmission.

Tuning for an automatic is a hassle. Many people refuse to do it (at least on this forum.) The chipped P72 is a good idea, but going through Hondata is a bit much. Unless you need all that they have to offer, you're paying far too much just for a chipped ECU and a basemap. A chipped ECU tuned with Crome, ECTune, or Uberdata will work just as well in most cases.

As for the FRM not holding up to high heat... sure, ANY stock sleeves aren't going to like a super-high revving N/A motor, or forced induction pushing more than 10-15psi. You'd probably crack an iron sleeve before the FRM sleeve, honestly.
FRM is what they used in the NSX's engine.

good point about the ecu's. Just have grown to trust hondata's rep. I will look into the other ones though before I go blow that much.
Do they have those programs just for the stock P13?

Thanks for the info on the frm's.


Well I think I am pretty much sold on doing the swap. Anything else I should know?

[deevergote]

You cannot reprogram the P13. The only company I am aware of that has cracked the P13 is JUN, and their ECUs are hard to find, and not cheap when you find one. They are also only tuned for a specific setup.
You'll want a P28 or P72.

Hondata is good, but their reputation carries them more than their products, from what I can tell. You can definitely get what you need much cheaper with other programs. Either way, you should get a full custom tune, not some off-the-shelf map... regardless of how good the reputation of the source is.

[Tippey764]

You cannot reprogram the P13. The only company I am aware of that has cracked the P13 is JUN, and their ECUs are hard to find, and not cheap when you find one. They are also only tuned for a specific setup.
You'll want a P28 or P72.

Hondata is good, but their reputation carries them more than their products, from what I can tell. You can definitely get what you need much cheaper with other programs. Either way, you should get a full custom tune, not some off-the-shelf map... regardless of how good the reputation of the source is.

fixed

[deevergote]

Fixed in my post. Thanks for catching the typo. It would piss me off to see some noob asking where he can get a P29... only to find out that I was the one he got that information from!

[Madpol]

yip STAY AWAY FROM AUTO transmissions lol

auto's are for lazy peeple

[deevergote]

yip STAY AWAY FROM AUTO transmissions lol

auto's are for lazy peeple

If you have nothing useful to contribute to the topic, please do not post... or else I might get the impression that you have nothing to contribute to this community in general. We have very few members from New Zealand. I'd hate to have to lose one.

[Madpol]

lol yeah sorry man