k20 heads
Honda-Tech Member
Joined: Jul 2005
Posts: 209
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From: New York, ny, usa
The K20A3 heads are the ones that came in the Civic EP3, which only uses V-tech on the intake cam, and nothing on the exhaust cam. The K20Z heads on the other hand came with V-tech on both the intake and the exhaust cam. K20A3 heads flow better at low rpm because they were designed to provide low end torque, while the K20Z flow much more better at high rpm.They both make good power, but the K20Z is a much better head then a K20A3.
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Joined: Nov 2007
Posts: 435
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Re: (H.Veras)
k20z3 and k20a2 castings are the exact same. the k20a3 has a weaker vtc, smaller ports, and i belive i-vtec only on the intake.
go to k20a.org.............................as anybody who makes a comment on here. 2/3rds of them have NEVER seen a k series piston....................or a single part for that matter...............they just look at pics on the internet.
go to k20a.org.............................as anybody who makes a comment on here. 2/3rds of them have NEVER seen a k series piston....................or a single part for that matter...............they just look at pics on the internet.
Honda-Tech Member
Joined: Feb 2005
Posts: 9,429
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From: New Joisey
Re: (civic.slow)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic.slow »</TD></TR><TR><TD CLASS="quote">go to k20a.org.............................as anybody who makes a comment on here. 2/3rds of them have NEVER seen a k series piston....................or a single part for that matter...............they just look at pics on the internet.
</TD></TR></TABLE>
umm you dont to see parts hand in hand to know what you are talking about...there is plenty of info on h-t about any k series head.
</TD></TR></TABLE>
umm you dont to see parts hand in hand to know what you are talking about...there is plenty of info on h-t about any k series head.
Honda-Tech Member
Joined: Oct 2004
Posts: 169
Likes: 1
From: Sherwood Park, AB, Canada
Re: k20 heads (allmotorh22)
K20A3 heads suck.
K20A/K20A2/K20Z1/K20Z3/K24A2 heads good.
The K20Z3 and K24A2 are slightly different though as they have the extra EGR stuff and slightly different intake manifold casting and can take the RBC intake manifold without modifying the IM.
They're all okay to use if you're boosting. However, you don't want to boost as high if you've got a higher compression ratio. Anyway, there's a YouTube vid showing a K20A2 blowing at 42psi. http://www.youtube.com/watch?v=iOcqMOSvpRI
K20A/K20A2/K20Z1/K20Z3/K24A2 heads good.
The K20Z3 and K24A2 are slightly different though as they have the extra EGR stuff and slightly different intake manifold casting and can take the RBC intake manifold without modifying the IM.
They're all okay to use if you're boosting. However, you don't want to boost as high if you've got a higher compression ratio. Anyway, there's a YouTube vid showing a K20A2 blowing at 42psi. http://www.youtube.com/watch?v=iOcqMOSvpRI
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