I recently purchased a 1994 Honda Prelude Si with a non-VTEC H23 engine. I want more power and am looking for opinons to whether I should make modifications to the engine I have (please list the suggested mods) or make a swap to a K20 or H22. I am fairly new to Hondas and am open to any suggestions. Thanks


Modified by preludedude94 at 6:49 PM 10/7/2005

 

Save most of the money for turbo and related engine reinforcement. In the meantime, upgrade your suspension and drivetrain.

I'm not so enthusiastic about the K series engines myself.

 

i got nothing against the k series but i say keep the h series motor in the prelude. turbo is the best way to go.

 

check out the link in my sig. for ideas

 

Screw turboed Hondas. It costs too much money and if not done right can end up costing you a lot more.

Get an H22 swap and mod from there. The H22 is a great start for NA. Plus, with all the money you spend to prep the motor for FI, you can build one badazz NA H22. ~230-240whp.

 

Um... You're thinking about doing a K Series motor??? I hope you have biiiiig pockets for something like that... A lot of customization would have to be done for that to work..
Good luck with that, but uh, I'd go H22A also with a mean NA setup instead of the K-Swap.

My idea though..

 

what are you going for? you need goals

honestly the prelude was never meant to be super fast and costs alot doing

best bang for the buck? civic or hatch with a h22a

if you want to keep the lude well by all means (i love my lude)

i think the highlight of the prelude is suspension work and personally at the track i like the balance, the car handles well in the turns

 

.<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FreakShow &raquo;</TD></TR><TR><TD CLASS="quote">I recently purchased a 1994 Honda Prelude Si with a non-VTEC H23 engine. I want more power and am looking for opinons to whether I should make modifications to the engine I have (please list the suggested mods) or make a swap to a K20 or H22. I am fairly new to Hondas and am open to any suggestions. Thanks


Modified by preludedude94 at 6:49 PM 10/7/2005</TD></TR></TABLE>


I am in the smae situation as you. i have researched doing a vtec conversion on the H23..which is what you you. It will cost as much to do the vetc conversion as it would to jstu do a motor swap with the H22A(JDM). now if you chose to do the vtec conversion..the H23 can handle alot more torque and boost..if you decided to boost it. But the H22a(vtec) motor is a lil more built that the H23. My lude is my first honda. so im learning alot about it. This site has helped immensly! Any probs ya have there are always ppl here to help ya out. And trust me..ask questions before you do something. i learned the hard way and got totally flamed for it. its ok though..lesson learned! But yeah thats what i can tell ya

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hprelude93 &raquo;</TD></TR><TR><TD CLASS="quote">
the H23 can handle alot more torque and boost..if you decided to boost it. </TD></TR></TABLE>

What does that mean? It has the same block as the H22 and can handle the same amount of boost. The piston ringlands will give out on both engines if you go higher than roughly 7-8 psi. How would it handle more torque??

 

My 'lude is my second Honda but the first that I'm doing anything with. I have a 100% stock '91 Accord with almost 350K miles and still running strong. The only major thing I've had to do in repairs other than a fender bender was a new distributor. The Vtec conversion sounds nice. I need to research more on it. Where did you get your information on the matter?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hawkze_2.3 &raquo;</TD></TR><TR><TD CLASS="quote">

What does that mean? It has the same block as the H22 and can handle the same amount of boost. The piston ringlands will give out on both engines if you go higher than roughly 7-8 psi. How would it handle more torque??</TD></TR></TABLE>

Its not the same block as the H22. If it was why would they make the H23 motor? there wouldnt be a differance. THe H23 actual block can handle more boost becasue it is jsut made stronger than the H22. The rods themsleves are a lil more reenforced. They are minor differances between them...but enough to make an impact when it comes to boosting and supercharging. The H22 has a better top end cuze it has to for the vtec. With the H23 not having vtec they built a better bottom end. so if someone actually does do the vtec conversion on the H23 they will be getting their money worth...if they add the turbo.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by preludedude94 &raquo;</TD></TR><TR><TD CLASS="quote">My 'lude is my second Honda but the first that I'm doing anything with. I have a 100% stock '91 Accord with almost 350K miles and still running strong. The only major thing I've had to do in repairs other than a fender bender was a new distributor. The Vtec conversion sounds nice. I need to research more on it. Where did you get your information on the matter?</TD></TR></TABLE>

I mainly get my information..and hell..he has taught me alot about honda's, but my boy can work magic with a prelude specifically. He has a 97 lude that he didnt add **** too..but was still able to put it on the dyno and tune it..himself, with stock settings. He has read and understood an ungodly amout of book..so he has alot of different views from different mechanics. i go to him when i want to do something..and he has never screwed anything up. He knows his ****. i constantly tells him he needs to become a honda doctor. he knows more than he needs to do it.

 

Swap to h22 ($2000) and drop it in yourself or with a friend.
buy bolt ons, see how you love it, then move on from there.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude964 &raquo;</TD></TR><TR><TD CLASS="quote">Swap to h22 ($2000) and drop it in yourself or with a friend.
buy bolt ons, see how you love it, then move on from there.</TD></TR></TABLE>

Thats what im doing with mine. Ive decided and it is set in stone. Im going to start buying the parts for the motor..being that they dont cost 2 G's a pop..lol. Im moving into a house with a garage...so ill get the motor in..start slapping the parts on...then put it into the car...while taking the H23 out and doing the vtec conversion...and putting the same parts on as i will have on the H22(if applicable) so i can offically see how much of a differance there is between the H22 and the vtec H23. i found my swap for a lil cheaper though. only 200 less...but hell...that 200 will buy my new flywheel...lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hprelude93 &raquo;</TD></TR><TR><TD CLASS="quote">

Its not the same block as the H22. If it was why would they make the H23 motor? there wouldnt be a differance. ..... </TD></TR></TABLE>

You need to understand WTF you're talking about before you post. The block is the same f'ing thing. The internals are what makes it an H23 or an H22 (crank, pistons, rods, etc.) Some H22s are open deck and the later years have larger mains, but that's about it....

Why don't you explain exactly what the differences are in the 2 blocks if you're so sure????????

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AndyD &raquo;</TD></TR><TR><TD CLASS="quote">Screw turboed Hondas. It costs too much money and if not done right can end up costing you a lot more.

Get an H22 swap and mod from there. The H22 is a great start for NA. Plus, with all the money you spend to prep the motor for FI, you can build one badazz NA H22. ~230-240whp. </TD></TR></TABLE>

LOL H22 great start for NA. Ya maybe if you have literally thousands of dollars to pour into it. Screw na if you want serious power slap on a turbo. But if you want reliability your going to have build up that H23. Even doing that tho, rebuilding ur H23 and turboing it you'll still blow any NA H22 out of the water, and have spent half as much.

 

hawk is right the h22 blocks are the same.

 

h22 has oil ports that the h23 don't. the h23 also has more displacement than the h22,deals with boring but still different. the h22 blocks are made with a lighter material to keep weight issue down which is y it is a must to resleeve with upping the compression or boosting mild or heavy. resleeving an h22 is the best choice when adding power. if they were the same there would be more h23 blocks using h22 heads. this combo is not the easiest to pull off especially if you don't exactly what it takes to get the job done. i really don't see how they are the same. so define the same.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by flight50 &raquo;</TD></TR><TR><TD CLASS="quote">h22 has oil ports that the h23 don't. the h23 also has more displacement than the h22,deals with boring but still different. the h22 blocks are made with a lighter material to keep weight issue down which is y it is a must to resleeve with upping the compression or boosting mild or heavy. resleeving an h22 is the best choice when adding power. if they were the same there would be more h23 blocks using h22 heads. this combo is not the easiest to pull off especially if you don't exactly what it takes to get the job done. i really don't see how they are the same. so define the same.</TD></TR></TABLE>

The bare block is the same. The H23 has a plug in the oil orifice that the H22 does not have a plug in, not extra ports. The displacement is because of the internals, not the block. The 'supposed' lighter material is not why you have to resleeve, it's because of the FRM lining on the stock sleeves. Where do you people get this info?