i already have the deck plate done ,and i have the stock 97mm crank,but i have a chance to purchase a k24 crank for a pretty good price...i am just wondering can it be made to fit.i do know the key ways are different,but i am just wondering about the over all spec's....can any one help me out here? your help is greatly appreciated.


harv

 

If there's a will there's a way. Never heard of it before, but i cant imgagine the outcome. Wether it is good or bad, still interesting to see.

 

thanks for the reply....well it is just a thought?but it would make a very mean all motor tho huh? i wish some one local had one so i could get the specs,but no one does...so hopefully ht can help me out.

harv

 

man.. take it easy, F(H) and K series dont have anything in common... so dont even think about it...

 

well your wrong on that...because the f and h inter change quite a bit....it's the k series that i do not know about.but soon will?also i am not talking about direct bolt in,so you my friend don't be so quick to jump the gun.but thanks for the input.

 

maybe u didnt understand me.....

I mean, that the F(or the H, cause F is debored/destroked H) has nothing in common with the complete new K series engine...

sorry for missinfo..

 

thats cool.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Twin-cam &raquo;</TD></TR><TR><TD CLASS="quote">maybe u didnt understand me.....

I mean, that the F(or the H, cause F is debored/destroked H) has nothing in common with the complete new K series engine...

sorry for missinfo.. </TD></TR></TABLE>

If the f23 is debored/destoked h block then why is it a 2.3 and the h is a 2.2 or 2.3. Destroked/debored would DE-crease the displacement of the motor, therefore what you said makes no sense, because the f block if anything has more displacement than the h22 and close to equal displacment as the h23. I think, if anything, its the other way around, but im no specialist on the h22 or f23, just using logic and common sense on this one.

And as far as the k24 crank in the f23. Research the specs, then go to a machine shop and check out if its possible after some modifications. Its like JayDMCRX said "if theres a will theres a way". Good luck with research/project because i think you will need it!!

 

F engines started with 1.8 and 2.0 litre.... thus it is called DEstroked/DEbored H engine.... but these engines F18, F20 were offered mainly on european and japanese/asian market.

 

Then who cares about them anyways?? Where talking about the USDM f23 motor on this thread. Your information is irrelavent to this whole topic.

So theres two F20's? I didn't know that, you learn something new on ht everyday thats if this dude twin-cam is correct with what hes saying. But in my opinion theres only one worth mentioning and that is the F20c.

 

i don't care about what motor has more this more that.i am just interested in the stroke"crank".i myself am a stroker man.i love tq.but i want to be able to get it down low and still have alot on top end.thats why i either deck plate or raise the c/h as far as i can..... r/s don't mean **** in drag racing,but street on the other hand is a different story.i already have a crazy set up,that will be up here on ht soon,just making some last minute changes.but i will give you a hint."2.6L"....

 

You have vtec and non-vtec F18/F20 engines

non-vtec were F20Z and F18 with 130 and 115HP

vtec- engines were F20B sohc vtec 148HP, F20 dohc vtec (JDM accord SiR) 200HP, and F18B sohc vtec with 136HP.

And ofcourse the F20C which is totally different.... and a monster :-)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Twin-cam &raquo;</TD></TR><TR><TD CLASS="quote">You have vtec and non-vtec F18/F20 engines

non-vtec were F20Z and F18 with 130 and 115HP

vtec- engines were F20B sohc vtec 148HP, F20 dohc vtec (JDM accord SiR) 200HP, and F18B sohc vtec with 136HP.

And ofcourse the F20C which is totally different.... and a monster :-)</TD></TR></TABLE>

Thank you for this information. I always enjoy learning new **** about honda engines not available to the US. Now that you point it out i do remember the JDM Accord F20 w/ 200hp, nice motor. But good info on the others.

The f20c is a monster!!

 

there was a guy here a while back that mated a f20c crank into a k24 block with a little modification

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spooncivic1 &raquo;</TD></TR><TR><TD CLASS="quote">there was a guy here a while back that mated a f20c crank into a k24 block with a little modification</TD></TR></TABLE>

Close but it was a F22C crank (new S2000) or at least he said it was 90.7mm, modified to fit in a K24 block with custom rods/pistons/sleeves, K20A2 head etc..

But back on topic, the F23 (97mm stroke) is like an h22 crank but with narrow width/diameter rod journals (.780" width and 45mm diameter) and 55mm mains. It would take a hell of a lot of modification to fit in a K block.

*edit* Here is a pic of an F23 crank if someone has a pic of a K24 crank it would make for a great comparison.



Pirate

 

i just read your wirte up on the freak motor."very impressive".now back to the topic at hand.we are not talking about putting a f23a1 crank in a k series.we are talking about putting the monster of them all "k24 99mm" in a h series .this project is just something i am slapping together w/a variety of parts.but the compression will be around 13-14:0:1 and i am looking to see 300 n/a.arturbo i think has an h22 n/a putting down like 270-80 maybe morei am not sure.and i think he is using the stock h22 crank"but not sure on that either".


MAYBE YOU SHOULD MARKET THOSE RED BARRON INTAKE GASKETS...HA HA

 

Assuming that you could physically fit the K24 crank into the F23 block you will have to figure out a way to run the oil pump. The K24's is chain driven and the F23's is driven directly off the crank.

Also the K24 had 153mm rods and the F23 has 141mm rods so the deck height might be too short unless you get a deck plate or VERY short pistons. So depending on the rods you will end up with a horrible R/S ratio that will hurt high rev breathability.

Pirate

 

You first need to compare the crank snouts. I believe they are different but I am not positive on that.

 

as long as the journals are the same size,couldn't one run an external pump?don't get me wrong this was just an idea that was thrown around.

 

Earl is right. If the "snouts" are different you will have to find seals that are the right size for the crank and that could also prove tricky. Why not start with a k24 block and K20A2 head? Then it is a wiring job, mount issue and axles, perhaps it is easier than swapping and modding specific internals. What platform is this going into again? And Yes external oil pumps are an option even dry sump oil systems that should reduce pumping losses by pulling a vacuum on the crankcase But you still have a horrible rod/stroke ratio. How thick is the deck plate? What's the deck height now?

Pirate

 

yes w/o a deck plate the r/s would be horrible.the d/h is 9.390,so if i was to use the k24 crank i could still have a very good r/s ratio.what would be real nice if one could take the f23 crank and put it in a b-series.now that would make a crazy all motor set up would it not.

 

maybe he's talkin about the f series motor from a S2000? cause i know theyre really simular to a K series from the RSX's and EP's. u talkin about puttin a k24 ( new crv/tsx) crank into a F20c (s2000) block?

 

i have seen h cranks in k24 blocks wiht modifications to the snout.. i dont see why (with some modifications of course) the k24 crank wont fit in a f23..

 

As I understand things, K-series is internally quite similar in many ways to H-series and F-series. For instance, bore spacing and bore diameters are quite similar, as is the maximum possible bore diameter from sleeving. This would suggest that it would be possible to use a K24 crank to stroke an F-series or H-series motor. Just keep in mind that you could run into problems similar to the use of an old B20A crank to stroke a newer B-series motor. Among other things, it is necessary to relocate the thrust surfaces for the thrust bearing, modify the snout, and make a proper recess for the pilot bearing. Similar measures may need to be taken to use a K-series crank in an F-series or H-series motor. But it probably could be done if you are willing to do what it takes to make it possible.

 

really don t think the 2mm difference in stroke is worth it. I think it could be done but i would just stick with the f23 or even f22 crank. your gonna have to have custom rods regardless. If you went with the F series you could have 3mm taken off the rod journals and run long eagle ls rods. Also the 95-97mm stroke will slow down piston speeds a bit and allow better engine geometry therefore maybe adding some longetivity.