Si vs. RSX-S

[MyBlkSI]

I was checking out the comptech dynos and wanted to compare the rsx-s to the Si. Check out what I got

[MyBlkSI]

Here is the Tq

[Suk02Si]

looks good to me :D

I have my dyno vs my friend's rsx-s dyno and I make a few more ponies more than he does before 6000rpm:p

[XSquigyX]

Interesting.... :angel:

[rs_1101]

yea but they got all those extra revs.. lol. yea i dont really fear type s's as much anymore, the ep is waaaaay to underrated, but i wish honda had put a higher compression motor in our car!

[LASI02]

Nice post! Now i just need to find a Rsx-s to run against

[MyBlkSI]

I'd like to race a type-s that shifted @ 6800... hehe

[rs_1101]

some people on this board have races type s's.. the general concencus is that its really close in first and second gear, with most si's reported to kill the type s off the line, but as soon as 3rd hits... owch.

[HokieSi]

I test drove a rsx-s last weekend, under normal driving it feels pretty much like the ep, except it kept going after 6k rpm. Imho, the shifter was just a big piece of useless plastic but the tire and wheel package is much better than the ep. I'll keep the ep and take the FI route.

[MyBlkSI]

Damn the S2000 has pretty much the same numbers as us if we stay below 6K

[rs_1101]

thats where those high flow parts come in handy.. lol maybe an s2k head/piston swap...?

[MyBlkSI]

yeah i started a thread a while back about a S2000 head swap. but got no good feedback. i think that head would be perfect for the Si. its more free flowing and can handle alot of revs. plus we have a crippled vtec. if we swapped heads would we keep our vtc??

[Brettnyt]

Woah, nice graphs! Thats very cool information! Anybody got a dyno for us with hondata?

[rs_1101]

the thing is, itd be better to get the k20a swap though. that motor has muuuch more technology in it, even the a2 head, with new cams and whatnot will kick the crap out of the s2k head.. sry to say.

but the s2k head would be a crazy frankenstein project if anyone ever comes across one

oh, and the hondata graph looks like the k20a2 , but about 5 hp higher across the scale and cuts off alil sooner.

[Em2guy]

wow that vtec really kicks in for that s2000 so bad the a3 motor only has half-ass vtec

[MasterVTEC]

Originally posted by rs_1101
yea but they got all those extra revs.. lol. yea i dont really fear type s's as much anymore, the ep is waaaaay to underrated, but i wish honda had put a higher compression motor in our car!

our cars are really good for turbo set up, that what i like about our low compression engine!!!!

[nozomi]

Originally posted by MyBlkSI
yeah i started a thread a while back about a S2000 head swap. but got no good feedback. i think that head would be perfect for the Si. its more free flowing and can handle alot of revs. plus we have a crippled vtec. if we swapped heads would we keep our vtc??

as far as i know, s2k head swap can't be done on K20 block man, THEY SIMPLY HAVE DIFFERENT BORE DIAMETER...

but of couse, nothing is impossible as long as you have $

[MyBlkSI]

no acctually i thought the ep3 and s2k had exactly the same bore and stroke... thats what made the head swap possibility so interesting i could be wrong though

[Tenacious G]

nope, K20A3 bore and stroke is 86x86

the F20C is 87x84

[simann]

My brother who has a type-S with HP header and AEM SRI lives at home with me and my parents, we are currently both erolled in the same colledge.......soo we race alot! I have HKS SRI and a custom 2.25 piping non resonated with an ES oval muffler. Me and him are nearly dead even on the launch, which i always for some reason get him off the line but like others stated, when i shift to third and hes still in second going past 7,000 rpms making 200 hp, he basically gains on me every time I shift......thats why guys with hondata can keep up with them with the higher HP and redline.


I jsut want the K20A2 head swap!:D

[VividDreams]

even if it WAS possible to swap the S2000 head, we STILL couldnt handle the S2000's nearly 9k redline, your engine would be shootin piston asteroids. yeah, the valvetrain could take it, but not the bottom end. SCC had a article about the bore/stroke issue, and basicly, our engine is whats called square(86mmx86mm), the s2000 is over-square (bigger bore, shorter stroke)which allows for higher rpms, the K24 however is under-square, meaning say 84mmx87mm(guessing), the longer stroke can make more tq, but wont be able to handle high rpms, we have a happy medium

[rs_1101]

you can build an ep bottom end to handle 9k im sure. its still a 2.0 motor, which means not too much metal is bein thrown around. what theyre talking about with under square/under square is the same as comparing most domestic motors to import motors. most import motors have a much shorter stroke = less weight that teh crank has to handle being thrown around.
with bigger v8s (like my 5.9ltr yukon xl) it makes a difference b/c those are BIG pistons being thrown around like maaaaad.
but we got these little ol things, and with minimal bottom end work im sure the a3 block could handle 9k, but if not, just apply a rev limiter! the aem unit is comin out soon right?

what if you used the s2k head and type s pistons/crank?

another thing to take into account is that while hi performance, the s2k head is technologically inferior to the a2 or a head. last time i checked the s2k doesnt have ivtec.

[Tenacious G]

how is the F20 technologically inferior when it produces 120 hp/liter and the K20A2 only kicks out 100 hp/liter? it's not just about i-VTEC.

[rs_1101]

powerwise, yea f series, technology-wise k series.
the f series is just highly tuned and a spectacular example of what honda can do when theyre not worried about making an everyday driver, but:
take a k20a and strap some goodies on it. when aem makes the new reprogrammer, tie that in and dyno tune it. i can pretty much guarantee you the k20a will kick the ever loving crap out of an f series, given a head of equally high quality build

the k series is more like a test drive for honda. the ivtec system and 3dimensional fuel mapping is obviously superior to the older technology f series.

im not denying that the s2k setup is not manly. im saying, compare the motors based on technology. can an f series change cam angle while running? no.
have we completely mastered ivtec yet?
no.
will ivtec kill all equal displacement motors in a little time?
yes.

[2k2SiAutoXer]

well said rs

--Tom