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K-series Engine Swap

21K views 47 replies 15 participants last post by  MrTea  
#1 ·
Ok, so my buddy owns a '04 RSX Type-S. His next step is turboing it in the Spring. I've ridden in it numerous times and it's fast as shit, making 258hp with only bolt-ons. Does anybody on here know if a K-Series motor (Preferably a K24 or K20A2) would fit into a Mazda6i? I know this sounds weird but I think it would be badass after a little weight reduction. Any info would be greatly appreciated. :drive:
 
#2 ·
Ok, so my buddy owns a '04 RSX Type-S. His next step is turboing it in the Spring. I've ridden in it numerous times and it's fast as shit, making 258hp with only bolt-ons. Does anybody on here know if a K-Series motor (Preferably a K24 or K20A2) would fit into a Mazda6i? I know this sounds weird but I think it would be badass after a little weight reduction. Any info would be greatly appreciated. :drive:[/b]
you can make any engine work with any car. how much it would cost is the question. it sounds cool and all but if u want the engine then y not get the car that already has it? iono just my .02 cents.
 
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#3 ·
Well both the RSX Type-S and the Mazda 6 are pretty close in price. I had considered it at one point but then again I wanted to be different. I think it would be rare to see a K-Series engine in a 6. I want the power of the K-Series but the looks of a 6, otherwise I would have just bought the RSX.
 
#6 ·
what's the point of spending so much money on a car to put an engine from something else in it??

FYI: if you've ever looking into pricing a k-series engine, be ready to spend in upwards of $4500 one. thats not including fabrication to make it work. axles, shift linkage, etc.

lets see, add that with the avg price of a used 6 nowadays at 14-16k. ud have about 20,000 invested to have an engine that puts out probably less power than the motor in the 6 to begin with, no to mention there are quite a few parts available for the 2.3l engine already in the mazda 6i.

just my .02, but im pretty sure this would be stupid, go abuy a speed 6 for less money than all that work and have a powerplant thats ready to make some good power.

and trust me, i've been working with tuning honda's for quite some time now. i find this a no so smart idea.
 
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#7 ·
if you feel up to it try it. but look into it first to see if it would work. im the only one so far to (on this board atleast) to try at speed 6 swap and a speed 3 tranny swap. i mapped it out figured the cost and prepared everything. i have done one swap on my own before and have worked on 2 others with a friend. but if you do it....i would have to agree with zoom zoom about how much your gonna spend. im gonna be into this for an easy 10-12 grand but i sold my previous modded car (in my profile) and got enough money to buy the material. but i would say try it it you are up for a challenge. but i would be against it if you dont have another car to drive in the meantime
 
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#9 ·
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#10 ·
another random thought about this. the Acura TSX is a very good looking 4-door with a k-series engine already in it.
 
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#11 ·
i really don't have any thoughts whatsoever that anyone will do any sort of working, daily driver, engine swap on this car. i don't care if it's an LS1 (that's what i'd do), sr20, K series or the DISI engine. it's all a bunch of talk as far as i'm concerned until someone really looks into it. give all the hassles of just doing the tranny swap, there is no way someone will get a full engine swap and keep it a daily driver. sure it might drive on the street, but i have no speedo, no odometer, no coolant reading, no cruise (not big for many, but i drive a buttload on the hwy)....hell no i could legally drive this thing on the street.

best of luck to all of you, but i'll send a gift card to anyone who proves me wrong....cause you all are crazy
 
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#12 ·
i really don't have any thoughts whatsoever that anyone will do any sort of working, daily driver, engine swap on this car. i don't care if it's an LS1 (that's what i'd do), sr20, K series or the DISI engine. it's all a bunch of talk as far as i'm concerned until someone really looks into it. give all the hassles of just doing the tranny swap, there is no way someone will get a full engine swap and keep it a daily driver. sure it might drive on the street, but i have no speedo, no odometer, no coolant reading, no cruise (not big for many, but i drive a buttload on the hwy)....hell no i could legally drive this thing on the street.

best of luck to all of you, but i'll send a gift card to anyone who proves me wrong....cause you all are crazy[/b]
:bowdown: :bowdown: :bowdown: :bowdown: :bowdown:
 
#13 ·
honestly tune or turbo the 2.3 not worth the time or money to swap you wont end up faster yes his is faster with it but it is a much lighter car. 258 hp is nice but look at his tq.
 
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#14 ·
honestly tune or turbo the 2.3 not worth the time or money to swap you wont end up faster yes his is faster with it but it is a much lighter car. 258 hp is nice but look at his tq.[/b]
Maybe you didn't read my post well enough. You might want to try that again. I said I would definately have to do some weight reduction in order to make it work.

As for everyone else, thanks for your input, still thinking about what I should do. If I went through with the swap I would definately turbo it, it wouldn't be left stock. But shelling out about 10k doesn't sound that fun to me. :laugh:
 
#16 ·
if you are looking to drop big money, then you can get whatever power you want from tehe MZR, and it will easily match whatever you can possibly get from the k-series.....and you'd have quite a bit more TQ than the honda. all you need is a computer (motec) focus top end with some stage2 cams, manifold and all those goodies. there are guys over with full standalones over 250hp and just over 200tq.

and you aren't going to shave much weight off the 6 and keep it too streetable...but that's all in the drivets eyes.
 
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#17 ·
if you are looking to drop big money, then you can get whatever power you want from tehe MZR, and it will easily match whatever you can possibly get from the k-series.....and you'd have quite a bit more TQ than the honda. all you need is a computer (motec) focus top end with some stage2 cams, manifold and all those goodies. there are guys over with full standalones over 250hp and just over 200tq.

and you aren't going to shave much weight off the 6 and keep it too streetable...but that's all in the drivets eyes.[/b]
Yea you're probably right. I just though it might be somewhat cool to do something like that. Even though I guarantee an RSX Type-S would smoke even the MS6 with no sweat, I think I'll just stay with the 6 and see what I can top her out at. Who knows, I may even be able to take a Type-S when I'm finished. :yesnod:
 
#18 ·
WHAT??? are you serious?

i will take on that bet anytime. though i'm sure there is A RSX that can do it, it's not a standard. i have a "6i" and i have no problems with modified evo's or STi's....but wouldnt' say a 6i could hang with them!!

you so crazy (/read with accesnt)
 
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#19 ·
Yea you're probably right. I just though it might be somewhat cool to do something like that. Even though I guarantee an RSX Type-S would smoke even the MS6 with no sweat, I think I'll just stay with the 6 and see what I can top her out at. Who knows, I may even be able to take a Type-S when I'm finished. :yesnod:[/b]

Obviously an RSX with mods could possibly take a Speed6, but then a Speed6 with mods would kill a RSX with mods.
 
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#20 ·
Maybe you didn't read my post well enough. You might want to try that again. I said I would definately have to do some weight reduction in order to make it work.

As for everyone else, thanks for your input, still thinking about what I should do. If I went through with the swap I would definately turbo it, it wouldn't be left stock. But shelling out about 10k doesn't sound that fun to me. :laugh:[/b]
No maybe you would like to try again. 3000lbs vs. 2600lbs. I don't see where you gonna shave off 400lbs from the 6 w/o almost gutting it. If you want to do a freaking k20 swap just get a Civic like the rest of the honda dumb***es. Trust me it would kill the "250hp" rsx w/o mods. If you want power just get the motor from the SVT Focus or something. I think it's safe to say that a honda engine isn't classy enough to be fitted into a 6....................
 
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#21 ·
an rsx type s IS NOT faster and CAN NOT POSSIBLY be faster than the MS6. The Type S only comes in at 210 horsepower stock and 196 horse at the wheels. it would basically take a turbo or a k series swap to be faster than the speed 6.
 
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#22 ·
Save the money because a k-series motor is $6,000 grand by itself. Than you need custom axles, motor mounts, you have to merges the two harness togethers and than more stuff to make it run. I guess it will be about $12,000 before you can get it started. Add it all up and see if you want.

Also you might want to notice that it cost about $7,500-$8500 to get a k-series into a civic/integra. So a Mazda 6?? maybe even double.
 
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#23 ·
an rsx type s IS NOT faster and CAN NOT POSSIBLY be faster than the MS6. The Type S only comes in at 210 horsepower stock and 196 horse at the wheels. it would basically take a turbo or a k series swap to be faster than the speed 6.[/b]
The RSX has a K-series you dumb fuck. The RSX Type-S is rated at about 14.5 stock. The MS6 is rated at 14.7-14.8 stock. Don't believe me? Why don't you go and look it up for yourself. Numbers aren't everything because gearing and weight also play a large role. The power band on the Type-S has great high end for running 1/4 mile. Even if both were modded to the same HP rating at the wheels, the Type-S would take the MS6 still because of weight difference. I can't believe you would think that the MS6 is faster, the Type-S is faster stock lol. That makes no sense to me. You're an idiot.
 
#24 ·
oh my god, here you go again, pulling numbers from magazines out of your ass. The speed6 is hard to launch properly which is why people have been getting horrible times like that. Otherwise its a sub 14 second car, stock, with 13.7 and 13.6 times posted. I can't find a stock ÂĽ mile for the Type S, but I'm seeing lots of mid 14s with mods.

And no shit the RSX would take the speed6 if they were rated the same. The problem is, you've had to mod the shit out of the RSX in order to get it to the same rating as the Speed, so what kind of comparison is that? And why don't you mention anything about the all important torque? Is it because the RSX doesn't have any?

lol, my 6i puts down the same torque as the Type S:
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Oh, woops, that looks like more to me.
 
#25 ·
AHAHAHAHAHAHAHA, im killing it in TQ!!!!! OWNED!!!
 
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#26 ·
You guys should all know by now that Honda/Acura HAVE NO TORQUE!
 
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