im mostly interested in hearing about the engine not like why RSX is different from other integra engines, i just want to know if there is a noticeable difference between them performance wise, (ponies and torque), because i then have a follow up question to that

 

the difference is that the new i-VTEC engines have added Variable Timing Control which adjusts the timing of the intake cam for fuel and air needs

 

Here you go read:

i-VTEC™ Technology

Acura's Variable Valve Timing and Lift Electronic Control (VTEC™) has set unmatched standards for extracting ample low-rpm torque and high-rpm power from the same engine. But a new technology that makes its debut in the RSX and RSX Type S takes VTEC a step further. It's called i-VTEC (the "i" stands for intelligent), and it helps both engines respond quickly while it improves fuel economy and reduces exhaust emissions.

In addition to controlling valve lift, timing and duration the way other VTEC systems do, i-VTEC uses Variable Timing Control (VTC). By regulating oil pressure, VTC adjusts the phase of the intake camshaft, advancing or retarding intake cam timing (relative to exhaust timing) in order to keep power output smooth across the rpm spectrum on both RSX engines.

In the 160-hp RSX, the VTEC modulation of i-VTEC works on the intake valves exclusively, using a 2-rocker arm design. At lower rpm, the second intake valve opens only partially, creating a desirable swirl effect in the combustion chamber. At higher rpm, both intake valves open fully, for quicker, easier breathing and full power output. In the 200-hp RSX Type S, an exclusive 3-rocker-arm design operates on both the intake and exhaust valves, developing incredible low-end torque and high-end power. At lower rpm all valves open to a lower profile that changes to a higher profile, with a longer duration, at higher rpm. In both engines, i-VTEC is designed to get not only the best results at a given rpm level, but the best performance possible from each individual engine revolution.

From Acura RSX web page

 

thanx for the post, now if someone were to be thinking about doing a conversion to LS/Vtec, is it possible to go with LS/i-vtec. Has that ever been done or is it possible and does it even make a difference between the two different set-up's?

 

No way, don't even think it.

 

Umm, I don't think so, but don't quote me on that. The only reason I'm doubting this is because I hope you are talking about putting a I-vtec motor in your ls and not trying to get the internals needed for a i-vtec installed in your ls vtec. If this is what you are talking about no, it's not going to happen. But for installing a i-vtec motor in you ls, seems point less, just get an RSX, or some how arrange to buy a i-vtec motor, wait for motoe mount for the swap and you are all set.

classic newbie queston.

 

i don't think the heads would fit together, plus the new engines rotate clockwise.