Originally Posted by Slows2k,Sep 17 2008, 04:08 AM

K and F cylinder head and transmissions do not interchange. The cam drive is completely different, and so is the bolt pattern for the trans.

It's not GT4, you don't just pics parts you like and they all bolt together.

Originally Posted by FoBangah,Sep 16 2008, 10:14 PM

Sorry to jump in being a nOOb and all but The F20/22 are not COMPLETELY different. I'm not gonna bore you with ALL the details but the more recent SPOON civic type R has a k20/F20 hybrid. K20 head on a f20 block. (Check video)Not to mention theres a write-up on how to use the K24s' crank and rods to make a cheap stroker kit for the F20/22 ( ?F24 ? ) I'll try to find that article and post a link .

For the record, the F20 will bolt to a K series tranny and A COMPLETE F20/k TRANNY HAS BEEN INSTALLED IN AN eg CIVIC HATCHBACK. All you inlinepro loving guys should know that!

F20/K20 hybrid

Originally Posted by azunboy,Sep 17 2008, 10:51 AM

I believe that head was fitted on with some milling work done so back to the whole its not a complete bolt on

Yes the crank/rods/pistons been swapped over before but this is just like building a poor mans type r

About the f20-22 with k20 tranny, seen it in a lotus elise before but i think there would have to be some metal work or milling if im not mistaken but if not then oh well.

Originally Posted by N2oExpresS2k,Sep 17 2008, 11:41 AM

With fabrication a k-series tranny will fit(cutting off the old bolt pattern and welding on an adapter plate. The head however, i'll believe that when I see it. Even if it did bolt to the block, the F uses gear driven cams, the K uses chain driven cams.

Originally Posted by 2003s2k2003,Sep 15 2008, 05:59 PM

How much NA power can you get out of the K20 though? Can you make more power out of it than an f20 or f22? Hear they respond much better to mods, but also start with less power.

Originally Posted by Soul Coughing,Sep 17 2008, 07:46 AM

F20 motor has FRM impregnated cylinder bores while the K20 has iron liners. This means if you need to rebuild, you have to sleeve with a F20, where as you can throw in new pistons easily (not alot of options with FRM sleeves for pistons).

Originally Posted by chris_barry,Sep 17 2008, 04:12 AM

I've tuned, built and raced both F20's and K20's including K24A frankenstiens and other variations. ( in Lotus 7 style chassis, and Lotus Elises)

I view the F20C as the engine Honda built as a new generation engine as a treat for the S2000. The K20A was then built using a surprising amount of the F20C geometry and technology but also made modular so the design could be varied for low power efficient motors, very clean emissions, and also high performance derivatives. The K2x family is used in a vast number of Honda models each tuned for particular requirements. The addition of the Variable camshaft timing allowed tuning of both the torque characteristics and emissions. Part of the modularity was also the 2.0 and 2.4 litre options.

I suppose I'm saying, the F20C was the start of a new generation of Honda motors, and the K20x, K24X is its high volume production offspring.

Chris.

Originally Posted by fatjoe10,Sep 15 2008, 05:44 PM

Well, one of the things that come to mind is that the K20 has an VTC unit in addition to VTEC. Also, the k20 is of an "square" design (bore and stroke 86 x 86). To say they are the same is just ignorance... dun worry about those ricers, lol.