9th Gen Civic Forum banner
1 - 12 of 12 Posts

· Registered
Joined
·
71 Posts
You're in the Honda world baby ANYTHING IS POSSIBLE!!!

all jokes aside, yes its possible but its not a straight drop in. If I'm not mistaken the biggest issue in terms of getting it to physically fit in the engine bay is the exhaust header. The K24A header is a 4 port, the original 9th gen Si engine (K24z7) has a singe port exhaust. So you're going to have to get a custom one made, buy a custom one pre made (only seen one and it was stupid expensive), or do what I've seen others do and bang the 4 port exhaust header with a mallet to make it fit / clear the firewall. I know the placement of the oil filter is different on the K24A as well, but I don't think that's an issue as its common to relocate it to that same spot on the K24Z to run different oil pump setups that require an adapter.

now for ECU/electronics and all that you could get it work just fine but you'd have to have a ktuner or flashpro to get everything to work correctly. This is almost certainly something that has been discussed in depth @ K20a so I would search over there and/or ask around, a lot of super technical guys over there
 

· Registered
2013 Civic Si Sedan
Joined
·
53 Posts
Discussion Starter · #4 ·
I'm not familiar with other K series motors, but what would be the benefits of a K24A motor compared to our stock K27z7 motor? :)
I’m not completely sure but my motor is done for and a lot of people swap the k24z3 or k24a because they’re practically the same motor, some even say it’s better but I don’t know any truth to that
 

· Registered
2013 Civic Si Sedan
Joined
·
53 Posts
Discussion Starter · #6 ·
You're in the Honda world baby ANYTHING IS POSSIBLE!!!

all jokes aside, yes its possible but its not a straight drop in. If I'm not mistaken the biggest issue in terms of getting it to physically fit in the engine bay is the exhaust header. The K24A header is a 4 port, the original 9th gen Si engine (K24z7) has a singe port exhaust. So you're going to have to get a custom one made, buy a custom one pre made (only seen one and it was stupid expensive), or do what I've seen others do and bang the 4 port exhaust header with a mallet to make it fit / clear the firewall. I know the placement of the oil filter is different on the K24A as well, but I don't think that's an issue as its common to relocate it to that same spot on the K24Z to run different oil pump setups that require an adapter.

now for ECU/electronics and all that you could get it work just fine but you'd have to have a ktuner or flashpro to get everything to work correctly. This is almost certainly something that has been discussed in depth @ K20a so I would search over there and/or ask around, a lot of super technical guys over there
Could you link me the exhaust header that would work. Been looking for one online and can’t find it. If not i guess I’ll have one made
 

· Registered
Joined
·
588 Posts
I believe the k24a was the one in the TL that has vtec on both intake and exhaust side unlike our z7.

You would need an aftermarket exhaust manifold or a 4 to 1 connection and some custom piping from there to the catback.

Oil filter might be relocated and you can upgrade to the type s oil pump too.

It pretty much drops in otherwise using the same engine and trans mounts


Sent from my iPhone 13 Pro while on the toilet.
 

· Registered
2013 Civic Si Sedan
Joined
·
53 Posts
Discussion Starter · #8 ·
I believe the k24a was the one in the TL that has vtec on both intake and exhaust side unlike our z7.

You would need an aftermarket exhaust manifold or a 4 to 1 connection and some custom piping from there to the catback.

Oil filter might be relocated and you can upgrade to the type s oil pump too.

It pretty much drops in otherwise using the same engine and trans mounts


Sent from my iPhone 13 Pro while on the toilet.
What’s the power differences? Also yeah I figured I would need a custom exhaust mani but I can’t find one online. Should I just get one made or do you know of any?
 

· Registered
Joined
·
588 Posts
I think the compression ratio is smaller than our z7. A boosted z7 will make more power than a boosted a4.

It’s more of trying to get the car na maxed out that people do the swap.

You are better off doing a head swap on the z7 if you wanted to stay na


Sent from my iPhone 13 Pro while on the toilet.
 
1 - 12 of 12 Posts
Top