Ok soooo. K swap Question

[Civihatch]

I have a bit of a problem. I want to know what choice would be the better. I'm torn between a k20 and a k24 swap in my ek hatch. I've been researching and comparing cost. I don't see a whole lot of difference in price. I know it costs more than a b series swap, but from what I see and read for the money you can get more power out of k series. I know that it is more expensive and I'm ok with that. What I want to know which one of the two has more bang for the buck. I want as much juice as I can squeeze from this car. One little thing I should probably mention is I have an 03 accord with the k24 in it so I won't have to pay for the motor there. This isn't my first build on a car but it is my first on a Honda. Please any recommendations or ideas are very helpful and welcome.


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[mikekh10a]

so are you saying you're willing to pull out the k24 from your accord to swap into your civic?

 

[cgpEJ6]

It also depends on which K20 and which K24 you are talking about, there are more than one version of each.

 

[CHILD]

I'd build off of the K24. You said bang for the buck. The 2.4's are always going to win that battle. That accord K24 with new pistons and a K20a2 would be a mean N/A ride. If you prefer boost, you can leave that K24a4 completely stock and put out 450-500whp no problem.

 

[XpL0d3r]

Added to the title of your thread. "Ok soooo" isn't very informative; I kept it in there though

 

[Civihatch]

Sorry about the title and child if I took the k24 from my accord and boated it I could potentially get in that power?


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[Civihatch]

Boated not boated


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[CHILD]

Yes boat power is awesome. But seriously, mid 400s is very common with a stock k24 on boost.

 

[Civihatch]

What would the k24 be able to handle as far as psi I have a t5 Garrett I got from a buddies eclipse for free that is set at 18 psi what is your recommendation


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[xxBLOOD88SHOTxx]

Garret T5?

 

[CHILD]

What would the k24 be able to handle as far as psi I have a t5 Garrett I got from a buddies eclipse for free that is set at 18 psi what is your recommendation


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Might want to find out what turbo you actually have, but i'd go with something like a precision 6266 with a sidewinder manifold

 

[Civihatch]

I meant t25 it came stock with eclipses


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[CHILD]

The motor could handle that much boost from that tiny turbo, but you'd be pushing the turbo to it's limits, just slightly past its max efficiency at 18psi. Like I said, id go with something much bigger to get more out of the overall setup and easy the work of the turbo. I wouldnt expect the big output either with that t25

 

[xxBLOOD88SHOTxx]

That turbo max can push 28lbs/min, after that it is all hot air. Not to mention finding a manifold, or rather having a manifold made for it to work.

 

[CHILD]

There's crappy log manifolds available for it.

 

[xxBLOOD88SHOTxx]

A k series log mani with a t25 flange?


Jesus HKS made a kit with a T25 for the k series lol, gay

 

[TheMyth]

I have a friend that has a k24a2 that makes 350whp N/A. Runs 10's consistently.
I would leave the a4's alone and fine a a2...

The Old One

 

[CHILD]

A k series log mani with a t25 flange?


Jesus HKS made a kit with a T25 for the k series lol, gay

That was back when almost nobody did a k swap and the Honda community didn't think k series was a good motor. Made sense that they went small and reasonable at the time.

I have a friend that has a k24a2 that makes 350whp N/A. Runs 10's consistently.
I would leave the a4's alone and fine a a2...

The Old One

That's ridiculous to leave the a4 alone. For one, a k24a2 can't make that 350whp with a stock head, neither can the k24a4. The k24a2 will need pistons (along with other things obviously)to get that kind of power, and the a4 will need pistons to make use of a better flowing head whether it's a rbb, rbc, or prb head. The end difference between the motors would be the crankshaft and the price since tsx motors cost much more than an a1, a4, a8 which are commonly used when actually building a motor. If the motor were to be nearly stock, then and only then is the tsx longblock actually worth the cost.

 

[TheMyth]

That's ridiculous to leave the a4 alone. For one, a k24a2 can't make that 350whp with a stock head, neither can the k24a4. The k24a2 will need pistons (along with other things obviously)to get that kind of power, and the a4 will need pistons to make use of a better flowing head whether it's a rbb, rbc, or prb head. The end difference between the motors would be the crankshaft and the price since tsx motors cost much more than an a1, a4, a8 which are commonly used when actually building a motor. If the motor were to be nearly stock, then and only then is the tsx longblock actually worth the cost.

Lol. No where did I say his engine was stock. And he made 350whp using e85. No race gas required.
But the k24a2 is the only k24 to come with vtec on both camshafts. If not.mistaken, a2 the only 1 that you can swap a k20 head on without having to change pistons.
By the way, the OP didn't ask what engine would be best in stock form. Any modding is going to cost $$.




The Old One

 

[CHILD]

Lol. No where did I say his engine was stock. And he made 350whp using e85. No race gas required.
But the k24a2 is the only k24 to come with vtec on both camshafts. If not.mistaken, a2 the only 1 that you can swap a k20 head on without having to change pistons.
By the way, the OP didn't ask what engine would be best in stock form. Any modding is going to cost $$.




The Old One

I didnt say you said the engine was stock. I mentioned it to show that in either csse, the engine would need to be built. The head and the block would need attention. So why spend more on an engine that will be taken apart and built, when you can get a cheap one and a cheap head and build it to do just the same. The k24a2 and the k24a1 can accpet a k20 head without changing pistons. And clearly if the OP isnt looking for the best motor in stock form, it further justifies not spending extra money for no reason whatsoever to end up with the same outout. Hope you can understand me better this time. Yes modding costs money, but you can save money when modding or you can waste it.