Ok, I am sorta a newbie here... and I really do apologize if you guys get questions like this all thei time, im just in a rather big hurry and otn have time to search the forum for previous threads... so if they exist that answe this question, please just post it here for me to link to. THANK YOU.

Here is my problem:

I have a 97 Honda Prelude SH with a blown motor. I just had them(the shop its at) buy a H23 for me... but they just decided that it would be to hard to reconfigure to make it work... which makes me mad. they told me before they got it it wouldnt' be that big of a problem. Im not srue the place they got the motor from knew everything about the ATTS. I think they are assuming I need to keep the ATTS, so i need to know if i can have the H23 block without ATTS(which not only do i not care about anymore, but I dont like). Is there just a replacement part i need to buy that will transfer the power instead of going through the ATTS box? this is what i would like to do most but am the most unsure of.

What other options do I have? these are my options that I have as far as i understand them... please let me know if they are plausable, or if i have anymore.

1. Spend a lot of time and money reconfiguring the H23 to fit and work with my SH

2. Rebuild my motor thats in there now(an option... but for the money i would think there are better options... since thats so much labor i would think if i got a new engine it would cost a little more but i'd get a lot more product)

3. But the Type S engine(i cant find it anywhere without the transmission) so it would cost me a lot.

4. Find another H22a4 engine(which i have not been able to do).

5. Get a regular H22 block JDM and have the same problems reconfiguring as the H23.

Any other options anyone knows about? I need to let the shop know by tomorrow (friday) so if you guys have ANY info im all ears. Thanks!!!

Bottom line is it sucks to have an SH.

 

Ive had the same problems when i was going to do a transmission swap. There is a plate that can be fabricated if you wish to ditch the atts and swap to a base model tranny. Why are you putting an h23 in a 5th gen ???? Just buy a JDM H22 with a decent transmission for about 2400 swap it, and call it a day. After all is said and done, throw the atts and the SH block off a damn roof. It requires no "reconfiguration" to swap to a JDM block, just rip the atts out, swap blocks, put the head on, and away you go. What exactly blew on the motor?

 

I am not looking to sawp out the transmission... just the engine. From what I understand, the transmission between the base and SH is the same, except the SH hooks up to the ATTS which is mounted to the block. Am I under some huge misunderstanding???

So what options do I have when im trying to keep the transmission i have in there, get a new engine, and i dont give a damn about that ATTS system which has come to plague me.

Right now it sounds like the easiest thing to do is get a new H22 w/ tranny and then bypass the ATTS by using some plate or what not.... im assuming thats cuz i would run into problems if i left the transmission i have in there correct?

I spun a rod bearing and blew a rod.... and i suspect damage to the valves and the crankshaft has been eaten alive.

Oh and why do you act so shocked about putting a H23 in a 5th gen?? It would work if i wasn't looking at an SH.... right?

 

The only solution that does not cost you an assload of money is to ditch the transmission. ATTS ain't that big of a deal anyway. Buy a JDM swap and re-use your distruibutor and injectors, and oil pump and call it a day. remove all the ATTS stuff. You'll drop weight and get way less drivetrain loss with a regular tranny and make more power

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">throw the atts and the SH block off a damn roof</TD></TR></TABLE>
Im so glad that 98 TypeSH doesnt live next door to me

 

Thanks guys, i've finally settled on the JDM tranny/engine swap. What is a competitive price for this?? the place that my shop buys engines from quoted me for 2500 on this... that seemed a little high... or is it just me?

Pardon my newbie ways... but I told my shop thats what I wanna do, and they still dont really get it. haha. They are a really good reliable shop, but they just dont do much performance stuff... except one mechanic they have. Anyways he obviously isnt' familiar with SH and ATTS... cuz I told him i just wanted to swtich to a JDM engine and tranny... and he was still talking about the problems of going around the ATTS. so if someone can please help me of what I need to do so he knows how to get it out. I think he is with the understanding that if I "take out my ATTS and throw it off a roof" that i will need a new axle... and i didn't really understand that at all... So I dont need a manual... just a basic explanation of how that is all going to work. Thanks guys.

 

Since im a nice guy im going to help you out. Your shop seems like they dont know to much about what you want to do, thus in the longrun you may run into problems. You can pick up a jdm h22a for like $2100.

If you change the engine and the tranny, there is no more atts so there is no problems.

 

So my engine will mount directly to my transmission(obviously) which will transfer power direclty to the axle correct? I think he just assumes the ATTS is somehow tied into the axle, and not just the power transfer to the axle. The guy I talked to yesterday is not the mechanic who would be working on my car... so I will call tomorrow and tell him my new found knowlege and go from there.

And I am sure that if I ran into any problems, they would take care of me... Its a clean and efficient shop and they know how to run thier business and do it right.

Also I am just curious, how much hpw / torque will i be running on one of these JDM h22's in a 5gen lude? assuming all my other parts were stock.

 

Also... why did you say it was a bad thing to put a h23 in a 5th gen prelude?

 

Because the H23 is non VTEC, and was not designed to go into a 5th gen Prelude.

 

because they are slow without boost or and h22 vtec head

 

OK... so the only question I have now is, after reading some more posts on this site, it seems feasible to put my new JDM h22 on the SH tranny I have now. But you guys said to get the new engine w/ tranny. Why when i can hook it up to the tranny I got with some modifications?

And I still dont know whats up with removing the ATTS.

 

how hard is it to put a h22 head on an h23 tho? Does it require any machining and a lot of labor?

I just got quoted for a h22a4.. a direct swap into my engine for 2,700. thats just for the engine w/ 55,000 miles on it. I dont get why that one is so much... but i cant find any other h22a4s to compare it to. Is that a rip off??

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FadedEpic &raquo;</TD></TR><TR><TD CLASS="quote">OK... so the only question I have now is, after reading some more posts on this site, it seems feasible to put my new JDM h22 on the SH tranny I have now. But you guys said to get the new engine w/ tranny. Why when i can hook it up to the tranny I got with some modifications?

And I still dont know whats up with removing the ATTS.</TD></TR></TABLE>

I don't think th eblock itself has the wounting points that the sh block has for the atts. This is why you can't just bolt up an intermediate shaft to the sh block, you have to customize one.

I would put the sh tranny on ebay and buy a whole jdm swap.

 

Ok i would do that if I decided to swap the the regular JDM h22.

but I cant decide which to do right now.... buy the H22a4 which is a direct swap an keep ATTS or do an engine/tranny swap to the JDM.

And is 2,700 a good price for that engine or not?

Also a new option I have is the Type S motor... for 4,700. But I have been reading that it wont give me that much more performance for the money. I am not looking to do many add ons to my engine, besides the bare basics. So would i gain that much from a Type S?

 

JDM engine = higher compression, super gas if you have one to make it run nice.

It has more potential than the usdm block, period.

$2100 is the most you should spend on all the parts, engine and trans.

 

Ok thanks. So which has more benifets, buying the US h22a4 SH or doing a whole tranny engine swap to the JDM? I realize i would lose ATTS on the JDM... so would i gain enough performance to compensate the lose?

I REALLY wish the Type S wasn't so damn expensive, or I wish i could find it without a transmission.... but EVERYONE sells it with tranny included.

Also is 2,700 a good price for the h22a4 Type SH US motor or not? It doens't include trans.. and im not sure if it includes ECU or not.

 

What are your future goals for the car?

Let me tell u this. If you plan on going boost, or having any sort of internal mods, or plan on going hondata, you will lose your atts. If you;

change ECU = lose atts
Change to a jdm block = lose atts
try to change tranny = atts laughs at you and now you got an extra tranny for no reason.

If you want to keep your atts, then buy a USDM Type SH or Type S motor and it should bolt up no prob.

2700 seems kinda steep for just a longblock.

 

I wanna do some basic mods, exhaust, intake, headers and what not. Just some things that will tack on a few ponies. i have been thinking about MAYBE putting a boost, but havne't looked too throughly into it.

I also am interested in keeping my atts. I would rather have good/fun driving capabilities than shaving a little bit of time off a drag time.

Whatever i decide to do, I want this engine to last, so I am not going to put any mods on it that are going to run it into any danger... but I know the JDM engine has a little better rep than the USDM... so I take that into account in this area too.

98TypeSH, do you still maintain your ATTS? what have you modded in your car?

 

i got a built head with all jun parts, hondata s200 (byebye atts right there) and prospeed header. intake,exhuast,blah blah

next for me is a jdm block with jun bottom end and new tranny with LSD. probably handle just as good with LSD as with atts.

 

Ok so basically i can do the engine/tranny swap for 2500(would include new springs and front suspension)... and would get LSD on that... or I can do the new US SH for 2700...

seems like since JDM's are better integrity of engines, I would wanna do that... right?

I REALLY WISH I COULD FIND A TYPE S ENGINE ONLY, and not with a tranny!!!! why does everyone want the engine I want in other cars w/ parts included, its making it very difficult for me to find what i want.

Can you please explain to me the advantages of the Type S... it doesn't seem ot have that much more horsepower. Does it have a better upgrade potential?

 

You could find one but you must wait for someone like satan to hear about one and pay some big bucks for it.

If i were you, i'd do this, take that usdm h22a4 out of the lude, atts as well. Buy the jdm h22 and then plug a base trans to it if the funds are not that high, because lsd is going to cost, $700 then installation for it.

I'd wait and see how you like the setup i have with the jdm h22 and see if i need lsd or anything else, you may like the jdm and still not need the type-s.

It is like my friend says: get to know the car before you spend any money.

I am going to autox this weekend and see if i need a rear sway bar.