from another forum:

the S2000 has a K20/K22 in it- it just has F20/F22 stamped on it because Honda didn't have a standard K block designation yet. Pretty much everything is interchangeable with the K block- that's how people have put the F20C into RSXs.


true?

 

False

The F20C and K20A have diffferent bore/stroke dimesions. How can the parts be interchangeable? Decks heights are different also.

F20C has a 87mm bore and 84mm stroke.
K20A has a 86mm bore and 86mm stoke.

 

ITRbroham, whos the avatar hottie?

 

f20c in rsx's???? can you change the drivetrain (i think) on the rsx from fwd to rwd?

 

this is definitely not true. The major difference is the FRM sleeves in the f20/22

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by USDMforLife &raquo;</TD></TR><TR><TD CLASS="quote">this is definitely not true. The major difference is the FRM sleeves in the f20/22</TD></TR></TABLE>

according to the Wiseco web site, k20 had FRM sleeve to

 

False.

 

buncha crap to end the night with...

false

 

if that was even true, why would they not keep the f-series stamp

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cyman83 &raquo;</TD></TR><TR><TD CLASS="quote">if that was even true, why would they not keep the f-series stamp</TD></TR></TABLE>

heres the thing...the s2000 tranny doesn't bolt up to any honda/acura block except the f20/f22c's...so that should be enough of an answer to know its crap...

 

id love to see the other info the "message board" gives out

 

The differences and similarities in the two engine components are discussed in lengthy detail over at K20.org.

Summary is that the two motors are quite different.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luder94 &raquo;</TD></TR><TR><TD CLASS="quote">

Summary is that the two motors are quite different.</TD></TR></TABLE>

im so happy the f20c isnt like the other honda/acura motors...it keeps the theft rate down unlike civics and integras...

now to change the topic, i have heard that the Acura TL and s2000 motors use the same internals, or they are interchangable.

 

GTFO! I've crankled on the J32 and the J35(MDX). What "internals" are you talking about?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slideways2000 &raquo;</TD></TR><TR><TD CLASS="quote">GTFO! I've crankled on the J32 and the J35(MDX). What "internals" are you talking about?</TD></TR></TABLE>

someone posted a thread somewhere saying that TL pistons and rods would work in the f20c...

personally i think its crap

 

Why would you go through all that trouble to use swap stock for stock, which MIGHT ONLY work.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slideways2000 &raquo;</TD></TR><TR><TD CLASS="quote">Why would you go through all that trouble to use swap stock for stock, which MIGHT ONLY work.</TD></TR></TABLE>

some people just have too much time on their hands...

its like the guys that posted about using the f22c block with an f20c head to make a stock 2.2 rev to 9k...waste of time IMO...

 

There are remarkable similarities between the two series though. Read this though.

S2000 Engine F20C and the K-series motors
by Brian Gillespie
Hasport.com

There are some similarities with the F20C and K20A motors. They spin the same way, they have the same bore spacing, and other similarities. There is a lot of speculation on how the two engines might be melded together to get the F20C’s 240hp performance with the FWD 6spd transmission of the K20A.

As you may or may not know, I am in charge of product developement for Hasport and looked into this about a year ago, so let me share some information.

Can you bolt an F20C head on a K20 block?
For all practical pruposes, no. The F20C head will probably bolt on, although I’ve not tried, but the problem is with the cams and cam gears. If you look at the image below you will see that the cam chain goes over a seperate sprocket rather than the cam gears as it does on the K-motor. If you look at the sprocket (7) you’ll see that it drives a helical gear (11), the gear in turn drives the cam gears. That means the cams rotate opposite to the direction of the crankshaft.

So if you wished to use the F20C head some custom fabrication would need to be done. Besides the obvious cam issue other problems might include the mating surfaces for the cam chain cover, coolant ports, or oil passages including the VTEC oil port.

(Image edited: I’ll download the image and get it here)

I’m not saying it’s impossible, just impractical. In the mid 90s there were several companies that were machining H22 (F22B?) heads for Super Touring Accords so that they could mount them backwards on the block. Their budget was a bit larger than the average Honda clown.

Can you bolt the F20C engine to the K20A 6 speed transmission?
You could make an adapter plate and custom flywheel to make this relatively easy to do. Also a year ago, Prototype Engineering made a bell housing to use with the K-motor 6spd so that it could be bolted straight to the engine with no adapter or custom flywheel. I’m sure if either one of these solutions went into production they could be had for under $1000 bucks.



Once you do this however, there’s another problem. The mounts are on each side of the engine with no provision for mounting one on the timing chain end or nose of the motor. Of course you can custom fabricate these that’s no big deal. Special car will need to be taken so that the engine doesn’t twist under hard exceleration. A mount on the nose of the engine helps here because having your main mounting points close to in line with the longitudinal axis of the engine keeps axles problems and vibration to a minimum.

With people getting 240+ wheel hp out of K20A’s with relatively minor modification I believe the performance is’nt that great to warranty the expense. But that is simply my opinion.

How about the crankshaft from the S2000?
There is some potential there. Right now as many of you may already know people are looking to destroke the K24 to take advantage of the taller deck but improve on the mediocre K24 rod/stroke ratio. Not just the F22C cranks are being used, people are also using the crank from the H22 and H23. A free revving K22 or K23 would be a force to be reconned with.

How about the pistons and rods from the S2000?
Again. there is some potential. Many people are working on sorting out these combinations and we will see some cars on the road shortly with these parts.

What else is being used?
I’ve heard that some of the other parts being used are the valves which are 1mm larger and valve springs. Since these components are designed for a Honda engine that revved to 9K it is tough to go wrong here.

As for other F20/22 engine parts, I think the biggie that is being overlooked is possibly using the S2000 intake manifold. The K20 intake manifold is a bit of a compromise design for packaging demands. It leaves a lot to be desired. The S2000 engine bay had a lot more room to work with as well as simple fact that it fed a more powerful engine. I want someone to adapt one to a K20. Of course it won’t work in an RSX or Si without some work on the front of the car. The radiator sits in the way. [IMG][/IMG]

 

That picture is fake (look at the speckles and spots on the floor and in front of the transmission - exact same pattern, just slightly rotated). And from what I understand the person behind Prototype Racing has ripped off several people; this has been covered here on H-T. Also, at one point, there was a user, either here or on k20a.org that claimed he had mated either a F20C to a K20A transmission or the K20A to the F20C transmission; I've forgotten wich it were. No pictures were presented when asked, and the claim was that one had manufactured either an adapter plate or a new bellhousing.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Oyvind Ryeng &raquo;</TD></TR><TR><TD CLASS="quote">That picture is fake (look at the speckles and spots on the floor and in front of the transmission - exact same pattern, just slightly rotated). And from what I understand the person behind Prototype Racing has ripped off several people; this has been covered here on H-T. Also, at one point, there was a user, either here or on k20a.org that claimed he had mated either a F20C to a K20A transmission or the K20A to the F20C transmission; I've forgotten wich it were. No pictures were presented when asked, and the claim was that one had manufactured either an adapter plate or a new bellhousing.</TD></TR></TABLE>

Call up the guy at HASPORT then and call him a liar
Also there was a guy on k20a.org who was selling his eg with an s2k motor, he showed pics...

 

theres a guy on here somewhere with a f20c driving the front wheels of his hatch. I'll try to find it. With enough time and money to spend on fabrication and research I don't see anything to majorly hold this up.

 

There it is.





If this is your car and you dont' want me posting them, please let me know.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Erik95LS &raquo;</TD></TR><TR><TD CLASS="quote">theres a guy on here somewhere with a f20c driving the front wheels of his hatch. I'll try to find it. With enough time and money to spend on fabrication and research I don't see anything to majorly hold this up.</TD></TR></TABLE>


hmmm... not the person i was thinking of....

it is rumored there is someone else on this board w/ that setup also.....but he is very tight lipped about it......

 

ive seen the civic with the f20c with the custom tranny plate...

i give them props, but its a waste of time...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Francesco &raquo;</TD></TR><TR><TD CLASS="quote">ive seen the civic with the f20c with the custom tranny plate...

i give them props, but its a waste of time...</TD></TR></TABLE>

Waste of time being unique? Its like telling the dood who's making the mid-engine H22 turbo GSR his project is a waste of time right?