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Done - K20Z3 head on a K24Z7 block

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frankenstein head swap vtec exhaust cam
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#43 ·
K20z1 Head Swap?


Hey guys I found this video on youtube.

The owner of the car claimed that the K20z1 head bolted right up in the comments.

Can anyone shed some knowledge on whether or not this is true? and possibly a better option than the K20z3 head?

I am very interested in a head swap so any insight is greatly appreciated!


:vtec228:

- 2015 Civic SI coupe Stock

- 2004 JCW MCS with tons of goodies - 224 WHP 191 TQ

- 2008 Ducati Monster 695 Dark Edition

SIClub NJ Member
 
#44 · (Edited)
EffBee6fromthe209 said:
And to this day they're still not reliable,and leak,and run poorly after a few thousand.your lucky to get 10000 miles safely without any hiccups.so it still holds true.
Click to expand...
This is completely wrong in regards to B20 Vtec. I had a fully built B20 bottom end and a fully built jdm 01 Type-R Integra head(ordered directly from Acura using the jdm part number). The car ran like a dream and had about 18K miles on it when i parted the motor out and sold the DA9 shell. It went together with ease and ran like a champ all the way to 9500rpm. The car was bored .020 over using 12.5:1 CP pistons. No valve contact at all after i pulled it apart. Everything was blueprinted and blanced as well. Now as far as the K24Z7 platform goes....Im still waiting to see if a head swap is worth it for a all motor build. (12.5:1, maybe even 13:1)
 
#45 ·
OneSickFB6 said:
This is completely wrong in regards to B20 Vtec. I had a fully built B20 bottom end and a fully built jdm 01 Type-R Integra head(ordered directly from Acura using the jdm part number). The car ran like a dream and had about 18K miles on it when i parted the motor out and sold the DA9 shell. It went together with ease and ran like a champ all the way to 9500rpm. The car was bored .020 over using 12.5:1 CP pistons. No valve contact at all after i pulled it apart. Everything was blueprinted and blanced as well. Now as far as the K24Z7 platform goes....Im still waiting to see if a head swap is worth it for a all motor build. (12.5:1, maybe even 13:1)
Click to expand...
18000 miles isn't anything to be proud about.let's talk when there s one over 100000k or more with ease ,just like any stock Honda can do with ease.
 
#46 ·
EffBee6fromthe209 said:
18000 miles isn't anything to be proud about.let's talk when there s one over 100000k or more with ease ,just like any stock Honda can do with ease.
Click to expand...
LOL The motor and internals showed zero fatigue. Along with the head and block still being in service on two separate vehicles today. I would estimate at least 50K on them now if not more.
 
#48 · (Edited)
k20z3allmotor said:
ive been working on a k20/k24 package for the 9th gen. and everyone is doing it wrong. even that turbo build with all the skunk junk. the old K20 valve cover will not seal with the front 9th gen timing cover it will spew oil as soon as it sees and run time. the HG is also an issue.

heres what ive done thus far and i think ive done it the most correct way possible. also if you ever see someone claiming they have a K20 head on their 9th with a stock 9th cover its because they are using the stock shitty intake cam the 9th comes with and a R40 VTC gear.
Click to expand...
any idea when you'd be done with that frank kit?
as far as we can tell,


Headswap:
it's r40 head gasket.
k20z3 head with r40 valve cover to match r40 timing chain cover.


Oil filter relocation:
filter base block off.

tbis is important to a lot of people as far as relocation the oil filter because most people that swap k20/24, swap into other chassis that utilizing the midshaft. With this new location, it makes the motor obsolete to use unless we find a way to go about relocating the filter like you did.


idk if it's a secret to you, but please fill in the blanks if not. I'd like to finally start seeing more k20z builds and swaps..
 
#50 ·
Stigmacher said:
Here it is, the first Frankenstien swap that I'm aware of. Not sure it's worth it.
There are 3 parts to the series. Part 3 documents the head to block fitment / issues.

Extreme Engine Tech: Building the Ultimate K24 Part 3- The Finished Goods!
Click to expand...
Hi
This apply as well for an n/a only?
Works with the oem ECU, harness or its needed something more?

thanks!!
 
#51 ·
I wish if we had an official Q&A thread for this head swap thing.
I want to know the answer for the same Q above. and may other tings to clarified.
reading that long article have not been useful to me acutely
 
#55 ·
This article had some great information. I'm curious what they did with the oil passage that didn't fit the head gasket and what kind of additional wiring would be needed to get VTEC working on the K20 head. Since the 9th gen SI doesn't have exhaust cam vtec, I'm guessing the ECU doesn't have the wire ran for it.
 
#56 ·
Blankitoeg6 said:
any idea when you'd be done with that frank kit?
as far as we can tell,


Headswap:
it's r40 head gasket.
k20z3 head with r40 valve cover to match r40 timing chain cover.


Oil filter relocation:
filter base block off.

tbis is important to a lot of people as far as relocation the oil filter because most people that swap k20/24, swap into other chassis that utilizing the midshaft. With this new location, it makes the motor obsolete to use unless we find a way to go about relocating the filter like you did.


idk if it's a secret to you, but please fill in the blanks if not. I'd like to finally start seeing more k20z builds and swaps..
Click to expand...
Do you have to move the oil filter location? If I would keep th block in the car and replace the head it seem logical to keep it where it is unless there is an oil flow issuie
 
#58 ·
Yes, because Short ram intakes do nothing but heat soak. once the SRi gets hot it losses power
 
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