F-Series and i-VTEC
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From: TN
Originally Posted by '05 S2K SBM,Oct 31 2005, 09:01 PM
Whoa there buddy...are you saying the K20A2 is a crappy version of the K-series? You are totally whack if that is your claim. The head on the K20A2 flows better than the head on any other K-series engine. Why do you think people are using the K20A2 head on K24 blocks?
My guess is the K20A2 is the same cast head as the K20R.. which is why they use it, just not the same internals. Just like the old B18C5 was the same head cast as the B16 while the B18C1 used a different head cast therefore negating using the ITR intake manifold on the GSR yet you could bolt it right up to the DOHC Del Sol and the 99-00 Si.
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From: Milwaukee Area
Originally Posted by six_speed,Oct 31 2005, 07:45 PM
there is a thread somone made about the development of the f20c.
and from the article it stated..
"the model f20c is the upscale version of the f20b which has been the powerplant of the honda accord"
~taken from the the first paragraph of the article. i have it saved and can host it, if requested.
aslo...
"cylinder bore was increased from 85 to 87 mm and the stroke was reducded from 88 to 84 mm."
and from the article it stated..
"the model f20c is the upscale version of the f20b which has been the powerplant of the honda accord"
~taken from the the first paragraph of the article. i have it saved and can host it, if requested.
aslo...
"cylinder bore was increased from 85 to 87 mm and the stroke was reducded from 88 to 84 mm."
it is not based off the F20B in any way, shape, or form. that article was proven false and blatently incorrect.
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From: Milwaukee Area
Originally Posted by '05 S2K SBM,Oct 31 2005, 07:58 PM
Now you are talking about factors that wasn't even apart of the discussion. You made a reference to the quickest RSX in the 1/4 mile, and your reference was wrong. I simply pointed out your mistake. 
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From: wishing I was in -
The Integra Type R engine is a K20A and makes 220hp (crank, old rating). The RSX Type S engine is a K20A2 and makes 200hp (also crank, old rating).
The heads are definitely different, although very similar.
The heads are definitely different, although very similar.
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Originally Posted by Wisconsin S2k,Oct 31 2005, 07:13 PM
I understand that. however, you've opened the can of worms, so please answer my questions.
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From: TN
Originally Posted by watermelonman,Oct 31 2005, 09:22 PM
The Integra Type R engine is a K20A and makes 220hp (crank, old rating). The RSX Type S engine is a K20A2 and makes 200hp (also crank, old rating).
The heads are definitely different, although very similar.
The heads are definitely different, although very similar.
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Originally Posted by Dark_Sub_Rosa,Oct 31 2005, 07:08 PM
does the K20A2 make 220 hp? simple enuff.. the K20R (whatever exact engine code that's designated I'm not totally sure since I gave up learning all that crap after I got out of it back before the K when the B was the big thing) does... so yea, the any K motor that the United States has is a lesser version therefore a crappier version. The closest thing there is to it is the newer RSX makin 210.. but its still not the ITR motor. Try again man, I've been around longer than your giving me credit for in this Honda game.
My guess is the K20A2 is the same cast head as the K20R.. which is why they use it, just not the same internals. Just like the old B18C5 was the same head cast as the B16 while the B18C1 used a different head cast therefore negating using the ITR intake manifold on the GSR yet you could bolt it right up to the DOHC Del Sol and the 99-00 Si.
My guess is the K20A2 is the same cast head as the K20R.. which is why they use it, just not the same internals. Just like the old B18C5 was the same head cast as the B16 while the B18C1 used a different head cast therefore negating using the ITR intake manifold on the GSR yet you could bolt it right up to the DOHC Del Sol and the 99-00 Si.
K20A2: '02-04 RSX Type S, 200hp
K20A3: '02-05 Civic Si (I think) 160hp
K20Z1: '05 RSX Type S 210hp
K20??: '06 RSX Typs S 201hp
The K20A has upgrade cams, intake manifold, LSD and ECU. None of this means squat if you plan on modyfing the engine because each one of these items will be upgrade sooner or later.