New issue of Sport Compact Car has the K24 block swap info.

what about this set up?
K24 block
k20a head
k20a tranny
k24a2 pistons

so you would have a the 2.4L, the better flowing head w/ the performance I-VTEC (as apposed to the i-vtec that came in most of the k24 engines, like cr-v), the 6 speed tranny w/ lsd, and a moderate cr of about 10.5:1

R-Spec said:

what about this set up?
K24 block
k20a head
k20a tranny
k24a2 pistons

so you would have a the 2.4L, the better flowing head w/ the performance I-VTEC (as apposed to the i-vtec that came in most of the k24 engines, like cr-v), the 6 speed tranny w/ lsd, and a moderate cr of about 10.5:1

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Are you talking to yourself?
2.0 head limits the block, and I would say the transmission also.

C-Zero said:

R-Spec said:

what about this set up?
K24 block
k20a head
k20a tranny
k24a2 pistons

so you would have a the 2.4L, the better flowing head w/ the performance I-VTEC (as apposed to the i-vtec that came in most of the k24 engines, like cr-v), the 6 speed tranny w/ lsd, and a moderate cr of about 10.5:1

Click to expand...

Are you talking to yourself?
2.0 head limits the block, and I would say the transmission also.

Click to expand...

i was just asking a question about that set up
what do you mean the 2L head limits the block?

R-Spec said:

what do you mean the 2L head limits the block?

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It's common sense, it flows enough air for a k20 not a k24, the camshaft also plays a role also.

Are you saying the K24 head is a better choice for a K24 buildup?

That makes no sense. The head on the k24 is not designed for performance at all. It has strange bumps in the intake ports, it only has economy vtec with 2 cam lobes. I'll bet if they (Hasport & and SCC) put high compression TSX pistons to match the larger overlap and duration of the cams (which is a great idea since the head is off the block and you have easy acess to the pistons & rods), you would have been a little more impressed with the results.

As for cams, Hytech is already having them made for their stroker kit for the K20A2. This is proof the aftermarket will be working with this combo soon enough.

It's still amazing they made big TQ at low RPMs with stock parts, and maintained Power till 7300.

94EG no improvising on what I say!

No I'm not saying there for performance matter of fact, I've already said that. I don't like the TSX head, its EGR equipped, and you have to modify it to fit another manifold. I don't really care for what Hytech is doing, I'm not going to destroke anything. I'm also not going to use generic camshafts either.

I'm not talking about using the TSX head (definently not a good idea), just the TSX pistons...

CRV block
Type R or S head
TSX pistons
Custom Cams
Custom Header

How come you don't like what hytech is doing? Destroking a f***ed up block is a great way to fix the Rod Stroke ratio and get much better mid & top end power. If it's a street motor, this is great because the engine will last way longer. This is why Honda uses 2.0L for it's type r racers (slower piston acceleration after TDC and longer dwell time at TDC to help the engine breath at high RPM). It also keeps exhaust reversion to a minimum at overlap. The best part about the K24 (for racing) is its bigger bore and taller deck height (19.7mm), not its wild stroke. If your building a race engine it's a totaly different story (since you should rebuild it after every event anyway). MORE STROKE PLEASE...

94EG said:

How come you don't like what hytech is doing? Destroking a f***ed up block is a great way to fix the Rod Stroke ratio and get much better mid & top end power. It also keeps exhaust reversion to a minimum at overlap.

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I'll say it once again.
I dont care about hytech, the block is not fucked up.
Who told you this crap? Better mid, and top end?

Do you watch SCCA touring car? You know what car came in 2nd and lead the most of the race ? Well if you don't know a K24 did in a TSX and it runs very fine against the BMW's, the RSX'es were way back in the pack no where to be seen. :roll:

K24 tsx happens to redline at 7100rpm getting a piston speed of 4612 ft/min and should take that forever, that piston speed is where its getting its torque from (and stroke).

When an Engine needs efficient breathing it has a super fast piston speeds/w 4 valves per cylinder.

BTW dwells are better with longers strokes. Also I dont think you know the R/S of a stock k24.

Well if the K24 is kicking but in races, why don't you think its a good idea to do a k24 head swap build up using honda parts?

Also, are the TSX ports any different from the R and S? I would think since it has 20hp less than the R and the same as a type S, they would be the same, with only valvetrain differences.

Also, does the type R recieve porting like the B series head did?

... You know, I think your cheap.

First, so what if I'm cheap...

Second, what about my questions?

94EG said:

Also, are the TSX ports any different from the R and S? I would think since it has 20hp less than the R and the same as a type S, they would be the same, with only valvetrain differences.

Also, does the type R recieve porting like the B series head did?

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The port dimensions of the R and S are the same. The Type R doesn't have hand porting like the old B-series did.

The TSX head is like an RSX head with EGR ports cast in.

The cam profiles are different for the TSX and RSX because of the longer stroke of the K24. It must produce peak HP at a lower rpm. With the right cam profile and intake manifold the TSX can produce hp at high rpm, but you wouldn't be able to get 250,000 miles from it. It would produce more hp than the Type R or S and a lot more torque too.

As a side note, I just ran a K24A4 Accord powered EG on a dyno to day and it made 145 ft/lbs of torque and 153 whp. That was a stock K24A with Hasport header and Hondata K-pro ECU. I believe a few hours of dyno tuning would yeild another 10 or more hp.

brian g

94EG said:

Well if the K24 is kicking but in races, why don't you think its a good idea to do a k24 head swap build up using honda parts?

Also, are the TSX ports any different from the R and S? I would think since it has 20hp less than the R and the same as a type S, they would be the same, with only valvetrain differences.

Also, does the type R recieve porting like the B series head did?

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I dont want the EGR on it, I want a nice clean swap not having to modify the head to fit a manifold.

Having the k20 head sent out to be worked on, for a 87mm bore and a 2.4liter displacment, also for some real cams. NO GERNERICS :x