S2000 2.4L

[K24cb7coupe]

I was reading the new turbo and saw that they took a 2.0l f20c block and h22a pistons and rods combined with a tsx crankshaft to make a stroked 2.0 into a 2.4L using oem parts. Thats why we love honda's

[IntegraXTR]

got a link?

[collins]

holy hell!! they got dyno charts?

[K24cb7coupe]

its in the new TURBO magazine, and from what i read there aren't any dyno numbers yet!

[ECMgarrett]

and from what i read there aren't any dyno numbers yet!

why is this exciting that you need an exclamation point?
funny, a NA car in turbo....


this is neat though, id like to see numbers and i wonder what the redline is on it now

[collins]

lol redline at 5....... 5rpm. lol

[OvErMiNd]

Yeah, I like my 9k redline just fine.

I'd rather put an ap2 2.2L bottom end and rev it to 9.

This 2.4 setup doesn't seem like it'd last too long.

[IntegraXTR]

Yeah, I like my 9k redline just fine.

I'd rather put an ap2 2.2L bottom end and rev it to 9.

This 2.4 setup doesn't seem like it'd last too long.

yeh that was what I was thinking, its nice that they stroked it to a 2.4L but revin this motor pass 8k might be a bad thing, but then again it might not need to rev that high because of the hp/tq that it would be making.

[Five*Star*]

I'm shure you could safely run a 2.4 S2K motor with aftermarket rods to 8000rpms safely, maybe beyond. It shure sounds like it would be pretty fun. I got the pleasure of driving a VERY nice JDmed out S2K today and it was fun, but could use a little more torque. It had a J's racing header, all under-body braces, recaro carbon/kevlar seat, mugen steering wheel, cusco cage, spoon calipers, etc, etc, etc. All I felt it lacked was a little more UMPH!


The 2,0 motors are already hard to make more power out of, so more displacement would naturally be the next best step to go in making a fast N/A S2K.

[LongShot]

This place used to make a 2.5 kit for the s2000. http://www.inlinepro.com/

[Truegiant]

without doing massive amounts of searching.. what does a f20 run for? I know alot of you s2k guys probably have done alot of searching.... so let me know. Thanks -

k24 crank and h22 pistons... sounds like a 8k redline happy beast to me...

[Vteckidd]

wonder what the R/S ratio is on it.

until i see numbers, NA S2Ks of that caliber are gay. Considering JG just made 619whp on a STOCK BLOCK S2K with a turbo

that motor better make 300whp to impress me. Otherwise, K series FTW.

Ever looked into how much S2K cams are? $700 A PIECE

[BigPoppaHurtm]

funny, a NA car in turbo....

I believe it was AEM's drift S2k which is turbo and makes over 400hp. Also the rod ratios on these frankenstein motors are really shitty something like 1.28:1 which probably means that longevity of the motor would be compromised. Then again its a Honda so who knows maybe it would hold up just fine Another thing to keep in mind is that the oil squirters underneath the pistons have to be ditched in order to make it work which is another sacrifice in reliability.

TrueGiant:

I believe most used s2k motors start at around $1,500 for the 2.0 and Id guess atleast $300 more for the 2.2's. But I havent researched them much so dont take my word for it.

[ECMgarrett]

so its a 2.4 AND TURBO????

[BigPoppaHurtm]

so its a 2.4 AND TURBO????

Yuppers sure is

[ECMgarrett]

pics/info on the car?

[josh green]

I highly doubt that it has h22 pistons I believe the F series motors have short pistons like the K motors. I am sure they may be the same bore. I preferably would put a 87mm crank in it from the 2.2 and then bore it to a 89 or 90mm and have like a 2.3-2.35L and have WAY better r/s ratio. A tsx crank in a F20c would have some SUPER short rods if the block is shorter than a k24.

[HeLLo iM iZzY]

PICS PLEASE !

[Bruce Leroy]

From H-t

Hi guys,
I thought I would chime in... I'm Gary Castillo from Design Craft. I was the one that did the build up and just wanted to say that the swap is fairly easy to do. If you have any questions I would be happy to answer any of them. Personally I think the coolest part of this build is that fact that the block doesn't need to be resleeved and it uses all factory Honda parts. anyway, hit me up if you have any questions about it. Just so most of you know I am not an S2000 guru, I'm dumb when it comes to posting on forums and the engine is for the RSR S2000 that I built. The second car is being build as we speak. =)

The rods need to be modified to fit into the crank's rod journal and the tangs are cut into the rods to fit the K-series bearings not for the stroke-to-block clearance. One thing I told Turbo mag about but they didn't enphasis too much on was that if you cut the 4mm out of the crank it can cut down alot of the machining work as well as allow you to run the prelude rod unmodified. So basically you end up with a thicker stronger rod and you can use the thicker prelude bearings too. the only reason I didn't want to modify the crank was because it's much harder to find a machine shop to cut the rod journals on the crank then it is to cut the rods. To be honest with you i wish I did cut the crank since the engine is going to be turbocharged but this was the first engine I did. The 9000 rpm rev limit with this stroke is kinda scary. This engine is to be turbocharged and we won't spin it that high. The rod ratio is down to 1.58 now so it might start to scuff up the pistons skirts at that rpm.

Those were two big concerns of mine too. but an even bigger concern is trying to cut the crank so that it will still use factory rod bearings and cutting the crank will mess up the factory heat treat from Honda... "It's probably the best that I know of." haha. It much better to cut the rod on the lathe since you can grab the inside bore and cut it cleaner. plus it's basic work for any machine shop to cut the rods rather then the crank. at first, I sent one set of rods to get cut with prelude bearings installed so it would cut both...ummm ya... don't do that. cut the tang in the rods for the K-series bearing. Like I said before, I would still rather cut the crank to have a thicker rod since the engine will be turbocharged.
as far as the stroker being cheaper then the Inline pro, Of course!! Factory H22 pistons and rods are super cheap, its the crank that will be expensive brand new. It's still cheaper then an aftermarket kit but strenght... I guess we'll find out soon. HP level, same thing, I guess we'll find out soon. Also, say if you did want to resleeve the engine and you did cut the crank. there would be absolutely no downtime on ordering rods and pistons because none of it would be custom. It's all H22 shelved parts.
As far as power, we will find out in the next month or two. we are running it on the engine dyno, but for you NA peeps, sorry its gonna be turbcharged. 'll let you guys know if it lets loose or not.
I'm sure alot of manufactures aren't too happy I revealed this in the magazine but what can I say.. I love being the first to try new things. haha. I guess it helps that RSR is sponsored by Honda. wait until you see the new car. You'll either love it or hate it.
thanks,
gary c