Quick question: I've got a K20a3 engine and am looking for a transmission, but I'm not sure about what to get for it. Will any K series transmissions work for me or are they specific to the engine? Thanks!

 

Not all K series transmissions will work on other K blocks. The K24 engines won't match some K20 blocks and vice-versa.

I am sure there is s chart somewhere in here or on the web. Take a look, do a search. Enjoy that engine!!

 

Thanks buddy, its a K20A3 but it'll be enough for awhile compared to my D16Z6 in my 93EX. I got the engine from a family member for $500 couldn't pass it up. I found an A2 6 speed transmission for a decent price I'm gonna get, from what I've read that should work. Also thinking about putting an A2 head on it, but while its on the engine stand was thinking about switching out pistons for higher compression ones. My cousin told me he had the A3 rebuilt but he "wasn't sure" what they put in it just that it "wasn't stock ****". I am a complete beginner on a K series so if you or anyone on here can provide some insight as far as what to do with it before I drop it in the EX that'd be awesome!!

Thanks!!

 

Best person I can think of is DaveSi677. He is big into time attack and has done a but load of mods and upgrades. There are others on this forum alone like Bserious and such that can provide numerous tips and such to help. I have a stock 2010 FA5 with a Brembo front brake upgrade and H&R spacers, nothing too outrageous!!

Best of luck to you!! Oh, and stay away from RSX S transmissions, they don't come with Limited Slip Differentials (LSD ) in the final drive.

 

You likely want a civic/RSX/Integra K20 trans case. Those are the ones that work with most swap kits.

An Accord/CRV/TSX trans will bolt to the engine, but maybe not to your mount kit.

This is the wrong forum for your question, BTW. Try the engine swap forum, or 92-00 civic forum.

 

<p>First you are going to need something like this:<br />http://www.k-tuned.com/blog/products/swap-packages-finally-here/</p><p>You don't have to go with Ktuned but you'll need a swap package for sure... might be able to piece something out if you search.</p><p>&nbsp;</p><p>Also to put an A2 head on the A3 is going to require a bit of work. &nbsp;Yes it does fit but it's not just an easy plug and play head swap like with the other k20s. &nbsp;Also you'll need the A2 ecu and Kpro to make it run properly... &nbsp;The amount of work and money you'll invest in doing something like this you could just buy a complete K20A2 and just swap it and be done with it. &nbsp;That is my .02$&nbsp;</p><p>&nbsp;</p><p>As for the tranny it will bolt up and work. &nbsp;The only thing is since it's a 6 speed you'll have to figure out how to create a notch for the 6 gear and also the reverse lock out. &nbsp;This has been done and yes it does require some work but this is worth it. &nbsp;The A2 tranny is going to make that A3 a little more fun to play with.</p><p>&nbsp;</p><p>My personal opinion is if you want to be fast I would look for a k20a2 swap instead of doing all this stuff on the a3. &nbsp;The a3 will feel quick in the EX but nothing like the a2 would. &nbsp;It's a huge investment but when you add up everything you'll realize that the best bang for the buck would be the a2 swap.</p><p>&nbsp;</p><p>Again this is all depending on what you want to do with the car. &nbsp;I would search up the swaps that have been already done and documented to see what it's going to take to do one. &nbsp;I'm actually in the middle of getting one started in an EK with my buddy. &nbsp;We just swapped out his B20V and he is looking for a k20z3.</p>

 

Thanks DaveSi, I've been doing a lot of reading on this and other forums and I'll definitely be taking your advice into consideration. I guess I will have to read more into the A2 head swap tho. Ive decided to get the Hybrid Racing Swap package. Seems it's more customizable than the K-Tuned version to me anyway. The only reason I'm wanting to do the A3 is because I've got it on hand. It was super cheap and all that too. I'll be keeping a look out for an A2 like I have been. This is gonna be an ongoing project for the next several months. So I've got time to decide. Thanks guys

 

A3's are like $500-800 alldae errwhurr. But since you already have it, work with it. If it sucks, all you'll need later is a longblock. You can sell your A3 to make up some cost.

Also...for the price of any K20, I'd rather do a TSX K24A2 swap. If you're considering one later. I have a K24 swapped ITR with a JDM DC5-R trans and its absolutely ridiculous.

 

<p>ya B_serious I can only imagine... if I blow the block on my z3 I'll be doing k20z3 head and k24a2 bottom... nothing like 260 whp and some 190 wtq haha</p><p>&nbsp;</p><p>Any videos of the beast?</p>

 

I'll try to get some in the next couple of weeks. I have it stored at a friend's place because I'm short on space. He sends me pics of it every now and then and says he does lots of burnouts in it.

 

Agreed; if you're going to put in the time and money to swap in a K20, you might as well get the motor you'll end up wanting down the road anyway. Less money and time to do it right the first time.

 

The real issue with the output of the K20A3 is the mild camshaft arrangement. I have seen 45 wheel HP improvements over the stock engine with I/H/E simply by installing a set of BC Stage 2 cams, springs and retainers. This will put the A3 on par with the big boy A2 for less than another grand... and the idle will be a little choppy, which seems to impress onlookers at your local hang out or car show. Oh, and if you hurt it, you buy another one for $500 and move your head package over into it... Viola' !!! Right back to where you started.


Or you can do as suggested above... get a K20A2 or a K24A2. All are excellent plans.

 

The A3 and A2 are exactly the same engines, the only difference is the A3 was a European engine the A2 was released in the states.

 

I wouldn't recommend a z head they are trash and that head wont give you 260 hp

 

can I use a transmission out of a 99 accord coupe I have 5 speed f23a1

 

Uhhh... No. Not even close.