k24a2 is the k-series head that has the less cfm. It also has less room for porting.

 

is this hearsay?

 

Intake valves are 1mm larger on the 06+TSX heads

 

What about 04-05 tsx heads?

 

35mm and 30mm if I recall.

 

Thats 35mm k20a2 and 30mm for k24a2 right?

 

No, it is intake and exhaust for all of them but the 06+TSX that has 36mm

 

It flows more than others at certain valve lifts. The coolant ports dictate how much you can port, and according to porters the TSX head has less meat on it than the others.

 

I hope to get my spare RBB head ported this spring by Team4Piston:up::up::up:

The ported RBB (previously posted flow bench graphs) looks like it can really gulp some air...

 

so with that, nothing really except for the intake valves are different?

so would it be possible to take a k24a2 head and replace the rocker assembly, cams and cam gears with a k20z3?

 

no need to replace the rockers cuz they're the same. Just the cams and gears. But i don't know if the flow of the tsx head can make power with the cam spec of the z3.

 

I made 243 08 k24a2 longblock and dyno til 8600 just so I could rev it out in 4th if need be and its ran times to back the power I guess high 11s soon to be mid 11s "hopefully" but thats with weight reduction and diffrent size slicks.

If I switched just to a type S head you think my longblock would bang into 250+ plus WHP? that would be sweet ontop of a bigger TB and E85 that would hopefully run into the high 250s ....but thats besides the point of this thread lol I guess what I was saying is the RBB head can make power for stock setups I dont think id go threw the hassle of switching heads.

Built motor yes typs S all the way plus a 4piston port

 

I'm kinda hoping my headgasket is blown...so I can pick one of these up if I have to pull the head

 

RSP is the k20z4 head from the Euro Type-R and is already ported by Honda.

 

are you sure its ported by honda or was it made with finer sand like the nsx and fd2r?

 

Even std intake valve size will be enough for most set-ups.

 

Great info in here... :up:

 

I always thought that the K24 heads were better for porting as they had more meat on them??

 

The CRV head is pretty damn good right out of the box. The TSX head has pretty thin walls which prevents aggressive porting. Personally, I would only get a ported head from Drag Cartel, Team 4Piston racing, or ASP. These guys race what they build and supply a lot of the drag teams. I definitely would not attempt this myself nor would I leave it to a local shop....unless I was local to one of the above mentioned companies.

 

Just to chime in let's not forget about Dave at Headgames Motorworks...

 

So stock for stock. It would be better to put a crv head on the tsx block?

 

So stock for stock. It would be better to put a k24a1/ k20a2/z1/z3 head on the tsx block?

I think the z1 head would be best since it has itr cams?

This is saying without porting.

 

Depends. The K24A1 head would be good if you're doing VTEC killer setup. The K20A2/Z1 head are the same and the Z3 doesn't flow as well but still good.

 

k24a1 has no spot for lost motion assemblies so you can only run it with vtec killer cams. just get a prb head unless its a drag motor

 

Lol....it's an old 1970s Kung-fu flick called "Invincible Armor." One of the best ever:up:

I made the Avatar by cutting two still frames from the final fight scene....obviously the armor is not so "invincible."

 

lMFAO!! I'm literally going to go try and find it haha. That scene looks hilarious

 

People want control over their specs, but in reality they should be asking what they need instead of asking what they think they need.

Exhaust likes it a certain way no more no less

It's also obvious because no matter what cams you are running you can always improve the intake and leave exhaust same, yet engine makes more power with same exhaust valve behavior guided by the roller touching the cam.