Hi all,

I am looking to built a new engine but this time to go RWD
I am looking for the best hp and tq in these engines

Which one do you think will be good for my new project for 2012

Engine of course will be turbocharged

Thanks

 

K20a all the way! They make much more mid range power than the F20c.
Even better is the K24 is your building it!

 

Yes I am looking for fully built engine for both

 

Well someone in Malta is already doing quite a build with an F20c motor...

There is probably a little more aftermarket support for the K stuff depending on exactly what you are attempting...but both motors should have equal the amount of potential.

 

k24!

 

k24, just look at what the fastest people are running, Most of them are k24

 

Most of them are k24

what dont you mean b18c1???????

unless you were thinking all motor then you are correct other wise you arent

 

There is a lot more after market support for the k series.

You could put a k24 crank in the f20 and eliminate the displacement issue lol.

 

Just for clarification most people run the K-Series because well its easier. The K-Series can be purchased with a trans and bolted straight into a front wheel drive. However you are going to go RWD so you can essentially use either one since I highly doubt you are going to use the stock S2K tranny. The K-Series has been around a lot longer and there are a ton of products for the motor. Although if I were to build a new motor for a RWD car I would choose the S2K motor. The head is a lot better on the F20 than the K-Series. Although I would also put i-vtec on the F20 to maximize the power band, but most people will just say put cams in it and lock the timing down.

Given all that if you are looking to get it running quickly and for less money I would choose the K-Series as everyone says cause the parts are readily available.

 

K series hasn't been around a lot longer. The s2000 cam out in 99 in Japan and 2000 in the USA.


Still unless you do a stroker a built k24 will murder any F build in power/tq

 

I didnt mean the motor itself has been around a lot longer. You looked too far into my post. It has been in the scene a lot longer cause well most Hondas are front wheel drive and its a lot easier to install a K-Series engine/trans into a FWD than building a F-Series motor and adapting a tranny to work with the FWD. Hence why there is more parts for the K-Series engines it has been drag raced and road raced at a higher level for a lot longer than the F-Series.

Now going by your ways yeah a 2.4L K-Series is going to make more power. That is like saying my 2.7L K-Series is going to kick the crap out of a 2.0L K-Series. However if you are going for a full build you can still build a 2.4L F-Series and hell even a 2.7L F. The head design in my opinion is far superior in the F motor than it is in the K-Series however I would adapt the I-VTEC to the F-Series unless you are going to lock in the cams and not worry about the I-VTEC.

 

^^^^x2

2.4L k24 vs 2.0L F is not a great Comparison.

Put the same 99mm crank in the f20 and its a different story. Both are great engines though.

 

put it this way U Break a Fseries ur in for thousands u break a k-u in for few bills.. a f block at least 800-1200 used a K24 block 200-400 bucks

 

I have NEVER paid that much for my F stuff.

 

how hard are they to find? k24's are easy obviously they came in so many cars/suv's.

 

I'm in the same boat. I'm currently looking at a built f2.5 and a built k2.5 to replace my f22. The k will have more TQ all the way through the power band but requires more fab work. Where as the f-series will be straight forward swap but the TQ is mainly at the top end of the RPMs. My first choice would be a k-series.

 

Thank you all for the info. As an AP2 owner since 2006, for the sake of my ego, I needed to make sure the F22c is still the reigning champ of Honda engines, 4-banger engines in total, and actually, still overall second best engine in the world, second only to the Ferrari 458 engine, which came-out almost 10-years after the F-series. Except for the Ferrari 458, since its birth, the F-series still reigns champ with the most horsepower per cylinder engine on the market, on this planet (naturally aspirated).

And now, thanks to all of you, I have confirmed, even against the new favorite (K-series), F22c is still the best. K-series is only popular because it is easier, not better. Got it.
F-series = best (designed for race cars)
K-series = easier, cheaper, more bountiful (designed for minivans)

(and the only reason there are more mods for the K-series is because it needs more mods to keep up with the already race-tuned F-series.)
(and if an F-series is bored out to win in displacement, then it's just exponentially better than the K-series.)
(K-series may have some fancy new tech like the i-VTEC but, that can always be added to an F-series. You cannot take elements that make the F-series better and put them onto a K-series but, the elements on the K-series can be added to the F-series. The F-series has the best platform foundation to build from.)