I know this might be a silly question, but I'm dying to know what seperates the rsx-type s motor from the 03 si? it's a 40 hp difference, why is that? theire both k20's ?I believe. Is it the c/r diferences? are they the same? basically can ya help me with some answers. I'm not to knowledgable with these new breeds of hond motors. thanks

 

ummm


Type Aluminum-Alloy In-Line 4
Displacement (cc) 1998
Horsepower @ rpm 160 @ 6500
Torque (lb.-ft. @ rpm) 132 @ 5000
Bore x Stroke (mm) 86 X 86
Compression Ratio 9.8
Valve Train: DOHC i-VTEC
Fuel System Multi-Point Fuel Injection
Emission Rating LEV II-LEV
Direct Ignition System Electronic with Immobilizer
Engine Coolant Capacity: Change (MT) (qt.) 5.4
Engine Coolant Capacity: Dry (MT) (qt.) 7.2
Engine Oil Capacity: Change without filter (qt.) 4.2
Engine Oil Capacity: Change with Filter (qt.) 4.4
Engine Oil Capacity: Dry (qt.) 5.6
Tune up Intervals 110,000 miles


and

Engine


Type
Drivetrain
Valvetrain
Cylinders
Cylinder Configuration
Displacement
Horsepower(HP)
Torque(FT-LBs.)
Redline 2.0 Liter Gas
Front Engine / FWD
16-Valve DOHC i-VTEC
4
In-line
1,998 cc
200 @ 7400 RPM
142 @ 6000 RPM
7900 RPM


Does that help... if it doesn't.. welll umm... wait for someone who knows more about it.


EDIT: Actually after reading that, it doesn't explain a thing. They're still the same. I dunno, now I'm as confused as you, as to where that extra 40 hp comes from.

 

heres a start

the civic si (sir in canada) has the k20a3 engine which it shares with the base rsx
the rsx type-s has the k20a2 engine which it shares with the civic type-r
the integra type-r has the k20a engine (hmmm, what if you put it in a civic?)

what the differences are, im not 100% sure. i know **** is smaller and stuff... i.e. the throttle body.... ask an expert

 

The si is detuned and also has a different type of vtec system. The type s has the same style vtec system as the b-series vtec system with more fuel tecnology and vtc. The si on the other have has a smaller cam setup and vec kicks in at 2300 rpm. there is more info at temple of vtec if you have more questions

 

Comp ratio on the SI is 9.0:1 RSX-S is 10.something I think....

SI i-VTEC is only on the intake cams, RSX-S is both intake and exhaust.

There are some other things...I just don't know them.

 

I think the Type S has a compression ratio of 11.0:1.

 

If SuperHonda was up, I could link you to my write-up on the differences between the A2 and A3 heads.

Basically, the K20A3 is a VTEC-E engine, while the K20A2 is the DOHC VTEC engine.

 

I think that the motor in the civic only has vtec on the intake side and rsx has vtec on both intake and exhaust.

 

thanks guys for the info, hMmm I think I need a lil more technical info and some hard facts. But this was informing though. Hell, I didn't know about the different c/r between the two motors. What else?...all the rsx type s owners and si's help me out. Reason being that I ask is I've saved enough money for down payment towards the new 04' type s this comming Oct.-Nov and just a lil anxious about learning all I can about them.

 

How much is the down payment for one of those...

 

Si - I-Vtec E <~~ fake vtec. It runs on one intake manifold until it hits 2300 rpms and then it runs on both.

Type S - The real I-Vtec. 11.1 compression ratio compared to the si 9:?

The type s also has more agressive cams. Thats all you really need to know.

 

Honda's Website

Si 9.8:1
S 11:1

Question is what is the difference in combustion chamber cc's?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kirei &raquo;</TD></TR><TR><TD CLASS="quote">Si - I-Vtec E &lt;~~ fake vtec. It runs on one intake manifold until it hits 2300 rpms and then it runs on both.

Type S - The real I-Vtec. 11.1 compression ratio compared to the si 9:?

The type s also has more agressive cams. Thats all you really need to know. </TD></TR></TABLE>

LOL - That was hilarious.

 

http://hondata.com/techk20general.html

They thoroughly explain all the differences between the Si, RSX-base, and RSX-S engines.

 

Another listing
http://www.sportcompactcarweb....ybrid/

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Pumping out 200 hp at 7400 rpm and 142 lb-ft of torque at 6000 rpm, the engine from the RSX Type-S (K20A2) is actually quite similar to the K20A3 in the Civic Si. They share the same 2.0-liters of displacement, bore/stroke, block, head, valves, and intake manifold. However, a whole slew of internal guts and external bolt-on bits are radically different between the two.

For starters, the RSX's K20A2 boasts 11:1 compression pistons, dual valve springs, and a tri-y header with larger primaries than the Civic.

Perhaps most significantly, the K20A2 employs a more sophisticated i-VTEC system in conjunction with more aggressive cams. There's a lot of confusion of the differences between the two engines' i-VTEC systems, so here's the straight poop. On both cars, i-VTEC really consists of two features: VTC (Variable valve Timing Control) and VTEC (Valve Timing and lift Electronically Controlled). VTC, in both cases, is simply a hydraulically controlled adjustable cam sprocket that varies intake cam timing on the fly depending on engine speed and load. VTC does not affect the exhaust cam. It's the VTEC portion of these systems that differs. On the K20A2 (RSX Type-S), VTEC means there's a low-rpm set of cam lobes and a screaming, high-lift, long duration high-rpm set of cam lobes both carved into the same camshaft. At about 6000 rpm, the rocker arms stop following the wussy little low-rpm cams, and start following the big ones. This is the system that made VTEC synonymous with high-output, 8000-rpm monsters.

Unfortunately, the K20A3 (Civic Si) uses a completely different system that happens to share the VTEC name. At low engine speeds, the two intake valves operate with different cam lobes--one valve gets the "primary" lobe (33.925mm lobe height). The other valve gets a wimpier "secondary" lobe (29.638mm lobe height). When VTEC mode kicks in at 2300 rpm, both valves start following the primary lobe. That's it. No high-rpm kick, no screaming, no high output. In the meantime, the exhaust valves always get shoved open by a 34.092mm lobe with no tricks at all.

With the two engines sitting together on the floor, we picked up on some notable external differences between them as well. In addition to the different cylinder heads, the RSX has a cast aluminum oil pan (the Civic's is stamped steel) and a small oil cooler at the base of the oil filter.

The power steering systems are also different. The Si uses electric power steering, while the RSX's is hydraulic. Finally, the axles differ slightly. The RSX has a larger bearing to support the intermediate shaft, and uses larger splines at the hubs.</TD></TR></TABLE>

 

very well put..now I see. Oh yea as far as down payment on the 04's well, I dunno about other acura dealerships in your town, but the one i'm getting from quoted me in particular, due to my somewhat good credit for 2000 down, and i think like 319 per monh...on finance