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I'm new to these k series a little. And this question probably been covered already, but what is the horse difference between the two engines? And why?

thanks,

JDMPB
 

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In stock form, the k20a2 from a 2002-2004 rsx type S has 20HP less than the k20a JDM.

The JDM k20a has higher compression, different cams, pistons, intake maniflod, throttle body etc.. It also comes with LSD and a better final gear.

Both motors make sense to me.

The k20a comes with LSD and good power potential with k pro and a nice exhaust/intake/header

The k20a2 with the right parts will make more power and you can also add the LSD for $850 etc..

Some people get the k20a2 and try to make it into a R but at this point it looks like aftermarket cams and other head internals will give better results.
 

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Alot of people say that if your not doing a K20a swap, dont waste your time doing a k20a2 swap. And most of the people saying that are people with B18C swaps. Which makes no sense, because a K20a2 with just intake, headers, exhaust and a reflash makes more hp that a fully built B18C .
 

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K20a2 makes more sense if you live in Cali. You don't have to mess around w/ a JDM motor. You will have a USDM motor that you can get barred easier as more CARB approved parts become available. Cali is getting crazy guys. I just sold my JDM B18Cr hatch cuz the state ref was gonna rape me.
 
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