01-27-2021, 08:14 PM | #29 | |
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K Power does already make adaptor kits to use the BMW 5 and 6 speed with the K series. It is a bit on the heavy side but no worse then the CD009. Plus they are tough and cheap. I don't know how tough it would be to fit in the transmission tunnel.
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01-27-2021, 08:27 PM | #30 | |
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http://www.superstreetonline.com/how...ily-breakdown/ Differences in K24A and K24Z Here is an all motor K24 swap that is thorough but not necessarily exceptional. Dyno in video
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01-27-2021, 08:30 PM | #31 | |
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I'm not familiar enough with the BMWs to add personal opinions, but all I read is that the BMW transmissions have long throws that are sloppy or numb. Like I said, I think this was a matter of reducing cost or having one less thing to source or to keep things simple.
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01-27-2021, 08:41 PM | #32 | |
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I think the K24 has proven to be a strong engine. I don't know if the FA24 will prove capable of handling boost the same, especially with such a high compression. A built K24 is pretty strong. The reality is that most people just won't be building the car for monster power. The FA24 will have D4S and high compression, so response, low end torque, fuel economy, etc will likely be better at similar peak power, but I bet a K24 will make more NA power with E85 and bolt ons, but with that high compression, the FA24 will possibly respond really well to E85. This swap is for a particular audience: someone who blows their engine might really want to consider this over a new, used FA20/FA24 or a rebuild. I can't see many people selling their stock motor, especially a low mileage FA24, just to put this in their car unless they are a Honda fanboy or know the K-series or are hell bent on saving weight and maximizing an NA build. I can also see people doing what solidsnake11 did, as an alternative to a LS or 2JZ swap, do the high hp K24 swap.
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01-27-2021, 09:41 PM | #33 | ||
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Overall I think it's an interesting swap. It's not going to be cheap and IMO it'll probably never be worth it, but I also haven't blown up my engine yet (after ~40 track days and lots of hard canyon miles). I suppose it'll be a tough choice between finding a cheap used FA20 or swapping a K24 if that ever happens. -EDIT- They also claim: Quote:
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01-27-2021, 10:07 PM | #34 |
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The 2012 Civic Si uses the K24Z7, whereas this swap is based on the K24A series. With the K24A2 specifically there is untapped potential that can be unlocked with a tune. A lot of the HP they are quoting will come from the intake manifold which will produce substantially more hp vs the K24A2 OEM intake manifold.
Can’t wait to see where the swap kit ends up price wise. I’ve been waiting for this for a while! I test drove a 2018 BRZ and the engine was the only drawback. Left a lot to be desired from a character perspective. Just felt lazy and unenthusiastic. This should be a big improvement! |
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01-27-2021, 10:15 PM | #35 | |
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Being worth it is relative isnt? Anyone who does any swap feels that it is indeed worth it. Lol Last edited by PulsarBeeerz; 01-27-2021 at 11:06 PM. |
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01-27-2021, 11:51 PM | #36 | |
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I think if someone did a K20A/A2 head on a K24A2 block and did cams, intake, exhaust manifold, K20 oil pump, etc then getting gains will come from 0.4L of extra displacement and the potential for higher rpms to 8k+ and actually making power at those rpms. Say the FA20D does 170-175whp stock then a K20/24 with bolt ons might do 235whp and more with E85, so it is possible it will do 75whp or more, but it really depends on the build, and I wouldn't say someone should expect "at least" 75whp. Put a K24A1/4 and the results will be less.
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01-28-2021, 01:11 AM | #37 | |
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I love Honda engines, especially ones with real VTEC. So this is a really interesting swap. That being said, I don’t understand the hate the FA20 always gets. You would think it’s the worst engine ever made if you only read reviews. Personally I think it’s a really fun and quirky engine, and it’s willing to rev. Not as eagerly as a K series Honda engine, but it’s no slouch. And I average about 30mpg. I completely understand that people might feel a little let down with the FA, because the chassis is so good on the twins. But it wouldn’t have been any better if let’s say Toyota put a 2ZR or M20 in the car. Unless they upgraded one of those engines a lot. (Those are both really good and reliable engines, but not very sporty). What upsets me is seeing what they will do to make the new GR Yaris so exciting to drive, but the 86 is sort of left as is for 8 years. I’m really hoping the FA24 will solve some of the deficiencies of the FA20. Anyway, sorry for the long rant. I agree that a K24 is an improvement over the FA20. Sent from my iPhone using Tapatalk |
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01-28-2021, 02:24 AM | #38 | |
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I get the beef, but I also don't really have a problem with the motor. It has been reliable for me, and I make enough power to be satisfied. I like how it sounds, how it revs and how it feels with the low COG. With that said, I don't feel attached to it in any way. I would have been just as fine with a compact I4 like the K20 or K24. The FA24 should close the gap some on the K24 for the majority of NA and mild boost enthusiasts, which is the vast majority of people who modify this platform, but the K24 is the better platform for serious boost, whether we are talking a stock or built motor. Overall, I'm happy with the engine because it fits the car. It allowed the hood to be low and the engine to be positioned well enough behind the front wheels. I don't think a K24 would have resulted in the same exterior, nor would it have been positioned so close to the firewall as we see in these swaps. Food for thought.
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01-28-2021, 02:54 AM | #39 | ||
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Also worth is definitely relative/subjective, no doubt about that! But here's the thing, I don't think I'm alone in my perspective. It's probably going to be $7-10k for the swap (just guessing, pricing hasn't been released yet) to gain maybe 20-30 whp over a FBO E85 FA20. Not saying that's not a significant bump in power, but compared to the cost and issues that come with swaps, it's a tough sell unless you're talking about a blown FA20 situation. Again just my opinion. Quote:
Saying a stock K24 will make 75 whp over a stock FA20, I don't think there's any legitimate apples-to-apples math that gets you there (or anywhere close really). The merits of the swap are valid enough to stand on their own. No need to play loose with the numbers. That's all I'm getting at.
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01-28-2021, 02:58 AM | #40 | |
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I honestly don't mind my FA20, but I have been looking for a longer term project so this checked all the boxes. The FA20 can be pretty good in fact once you ignore the echo of forum members without first hand experience. lol FWIW the F20C is less than 10mm shorter than the K24 and they both fit in the S2000 with its much lower hood just fine. Even with this swap they could have mounted it even lower but chose not too. A D4S 2.0L 2ZZ would have been great but oh well. |
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01-28-2021, 08:10 AM | #41 | |
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01-28-2021, 08:26 AM | #42 | |
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