whats the best choice in a k24a/k20a?

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23-07-2006, 11:34 PM
aaronng

Quote:

Originally Posted by sifoo

So why int he world would you want to buy a k24 in the first place just to destroke it to 2.0 :thumbdwn: :thumbdwn: :thumbdwn:

Back after a long hiatus.
The k24a2 has an electronic throttle which can't be used with an aftermarket ECU. So the trick is to use a k24a2 and put on a k20a2 head. It still keeps the 2.4L but now the engine is open to the full range of aftermarket ECUs for the DC5R/RSX-S. That means turbo with proper engine management is possible as well.

Quote:

Originally Posted by Paul1985

If you read that guide carefully i gave you, you will see that doing a frank on a k24a4 will result in valve clearance issues.

The best frank setup IMO is a K24a2 with a K20a/K20a2 head. Im not sure on which trans would be best for this setup either.

With the k24a2, you can use any k-series trans. What is not known however is whether the speed sensor would still work properly (or even fit).

Quote:

Originally Posted by Jums

lol yea i know that but som sites explains the benefits of a k20 head on a 2.4L block and on som sites it explains destroking the 2.4L into 2.2L givs u more power.

The k24a2/3 is a good block. The stroke is too long at 99mm, so it is not able to rev to high RPMs, even if it was sleeved. A destroked k24a2 to 2.3L on the other hand can rev to 9400rpm and makes 184.7kW at the wheels (it's in a Lotus Elise in the US). http://tsx.acurazine.com/forums/showthread.php?t=29759
24-07-2006, 12:00 PM
Paul1985

Quote:

Originally Posted by aaronng

With the k24a2, you can use any k-series trans. What is not known however is whether the speed sensor would still work properly (or even fit).

With that link i posted earlier it mentions you cant use a K24 tranny on this swap as there currently arent any mounts on the market for it (not sure how true this is).

But heres a graph where many different K-series tranny's are compared:
http://www.k20a.org/forum/showthread.php?t=7317
24-07-2006, 12:40 PM
aaronng

Quote:

Originally Posted by Paul1985

With that link i posted earlier it mentions you cant use a K24 tranny on this swap as there currently arent any mounts on the market for it (not sure how true this is).

I think they are talking about mounting a k24a tranny to whatever car they are using it for. Because at the top, the block choices are all k24a's, and then in the tranny section they say that the k24a tranny doesn't work with current mounts in the market. But I'm 100% sure you can bolt a k24a tranny to a k24a2 block.
24-07-2006, 02:06 PM
jimmeh

just buy a k20a2 and stroke it to 2.2L
go ask toda.
24-07-2006, 03:45 PM
Paul1985

Quote:

Originally Posted by aaronng

I think they are talking about mounting a k24a tranny to whatever car they are using it for. Because at the top, the block choices are all k24a's, and then in the tranny section they say that the k24a tranny doesn't work with current mounts in the market. But I'm 100% sure you can bolt a k24a tranny to a k24a2 block.

Your right, what about all the people doing straight K24A2 swaps in EG/EK/DC. I doubt they are throwing on different tranny's all the time.

I remember reading a while back you need an OEM mount (i think CRV from memory) for the K24 swap into an EG.
25-07-2006, 07:17 PM
civlowwer

Quote:

Originally Posted by sifoo

So why int he world would you want to buy a k24 in the first place just to destroke it to 2.0 :thumbdwn: :thumbdwn: :thumbdwn:

well another great post do your research b4 you make your comment about the topic,

putting on a k20a head onto the k24a is how u get around drive by wire, also other pros and cons too, but try k20a.org great website
25-07-2006, 07:18 PM
civlowwer

Quote:

Originally Posted by jimmeh

just buy a k20a2 and stroke it to 2.2L
go ask toda.

also try crower, crower offers a 2.35l stoker kit tooo
26-07-2006, 12:09 AM
sifoo

Quote:

Originally Posted by civlowwer

well another great post do your research b4 you make your comment about the topic,

putting on a k20a head onto the k24a is how u get around drive by wire, also other pros and cons too, but try k20a.org great website

i know my shit - no need for you to tell me to research

I was just commenting on why he was wanting a 'destroked' motor when he couldve just bought a k20a in the first place... swapping heads does not destroke a motor ..
26-07-2006, 01:35 AM
Jums

Lol ! ! !
26-07-2006, 01:44 AM
yourfather

Quote:

Originally Posted by sifoo

i know my shit - no need for you to tell me to research

I was just commenting on why he was wanting a 'destroked' motor when he couldve just bought a k20a in the first place... swapping heads does not destroke a motor ..

Very good point. I can see why he might want to run a K20A head.
But i think the removal of drive by wire would be the main benefit from the head swap.
The potential increase in power by swapping a head wouldn't be enough to justify the money being spent, but it would mean you could do other cool stuff to it like mentioned before, boosting etc.

I mean, I'm not a mechanic, I don't work on my car, but, I understand what you're saying pretty well.

And Jimmeh makes a good point of just buying the K20A firsthand.
26-07-2006, 08:37 AM
aaronng

Quote:

Originally Posted by sifoo

i know my shit - no need for you to tell me to research

I was just commenting on why he was wanting a 'destroked' motor when he couldve just bought a k20a in the first place... swapping heads does not destroke a motor ..

Because the k24a's deck height is taller than the k20a, so you can produce a k20a with an ideal R/S ratio using a suitable crank and longer rods.
26-07-2006, 09:32 AM
Paul1985

Quote:

Originally Posted by yourfather

Very good point. I can see why he might want to run a K20A head.
But i think the removal of drive by wire would be the main benefit from the head swap.
The potential increase in power by swapping a head wouldn't be enough to justify the money being spent, but it would mean you could do other cool stuff to it like mentioned before, boosting etc.

I mean, I'm not a mechanic, I don't work on my car, but, I understand what you're saying pretty well.

And Jimmeh makes a good point of just buying the K20A firsthand.

Its simple..
You get the Torque of the K24A aswell as the high revving top end power from the K20A. Just look at the results from such a swap :)

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