k24 head with our k20 block???

t1ny · 03-09-2007, 07:13 PM

i currently have a 2006 civic si and was thinking about getting a k24head to go along with my bottom end.
can someone give me pro's and con's about this. im not to familiar with which k24 comes with which car and which one i should be getting for the most gains?
thank you

TJ213 · 03-09-2007, 08:43 PM

as far as I know the only k24 head with VTEC (with the high cam profile) out there is the one on the TSX

Nexx · 03-09-2007, 10:54 PM

Offtopic:

How aggressive are the TSX cams compared to the SI and RSX-S? Also, in regards to gains, which would be better and still be relatively stock idle? (Something along the line of a GSR with Type-R cams)

t1ny · 03-10-2007, 05:33 AM

which engine code is from the tsx?... so if i was to change the head expectin a gain in performance i would be looking for the tsx head only rite?.... anyone know what the head and bottom end would cost around? separately?

IWANNAGOFAST · 03-10-2007, 05:59 AM

I dunno if this is a good idea, the tsx puts out as much hp as the si and rsx.

I think most people go k24 block w/ k20 head from an rsx-s

KShirza1 · 03-10-2007, 06:31 AM

Quote:

Originally Posted by t1ny

i currently have a 2006 civic si and was thinking about getting a k24head to go along with my bottom end.
can someone give me pro's and con's about this. im not to familiar with which k24 comes with which car and which one i should be getting for the most gains?
thank you

the head on youre SI is ported just like a TSX head and matched perfect with the our Stock RBC manifols. to see real gains you will need IPS K2 cams, Eibach valve spring, and KPro (which is not avail for us yet). this with CAI/RH/E and a proper tune you will see 230whp 180wtq well into 13's.

what caused you to think a K24 head would be better? its bottom end that will help with tourque given the bigger displacement. plus unless you can get ahold of a TSX bottom end you will be giving up oil squirters that we have already with K24A1 or A4. the head on A, A2, Z1, Z3, and K24A2 (TSX) cannot flow any better and shows no gains even with port and polish since it flows to max cfm.

let me know if you need further help with this... dont go waisting your money on pointless stuff.

1stk20z3 · 03-10-2007, 06:35 AM

i was imformed that the head on the k24(TSX) is the exact same head that is on the si the part number is exactly the same so putting a k24 head on your si would be pointless!

KShirza1 · 03-10-2007, 06:42 AM

Quote:

Originally Posted by Nexx

Offtopic:

How aggressive are the TSX cams compared to the SI and RSX-S? Also, in regards to gains, which would be better and still be relatively stock idle? (Something along the line of a GSR with Type-R cams)

RSX-S (04-05) comes with PRC (type R) cams matted to PRC (type R) manifold in A2 with KRO is close to type R k20a performance on Kpro. if you stuck those cams in Z3 head with Kpro gains will be well over 200whp with CAI/RH/E. this is a great match for us since we use RBC (accord euro R) manifold stock and the way our heads are ported. uprated valve springs and proper tune is a given.

before my FA5Si i had a ITR K20a swapped EP and before wreck i was considering Z1 head and manifold with my PRC cams and spring to give me more gains. on KPRO of coarse.

curious about EP setup here's a link...

http://www.ephatch.com/forum/showthread.php?t=120843

ProspeedCTR · 03-10-2007, 03:48 PM

The K20/K24 is a great combo!!! I built a K20A2-(RSX TypeS Head)/K24A1-(02 CRV Block) with 11:1 CP Pistons, ACL Main and Rod Bearings, Carrillo A-Beam Rods, Removed Balance Shaft Oil Pump (replaced with K20A2 Pump), K20A2 Aluminum Oil Pan (5.5 Quarts). Tuned with K-Pro (also by me) made 244whp and 186wtq on STOCK K20A2 Cams, DC TSX Race Header, Custom CAI, and Custom 2.5 Exhaust. 04 RSX Type-S Transmission with Quaife LSD on BFGoodrich Drag Radials in a 94 Civic CX Hatch ran 12.6 at 109.5 MPH all motor. Never got a chance to run it on the gas before I sold it or turn it higher than 8000rpm.

I still have 2 Complete K20A2 Blocks and 1 Bare K20Z3 Block still in the box/plastic that I am thinking about building and will install it in my 07 Si as soon as the warranty is gone. I am glad that Honda went to a MAF instead of just MAP it will be so easy to tune the A/F Ratio.

KShirza1 · 03-10-2007, 10:17 PM

Quote:

Originally Posted by ProspeedCTR

The K20/K24 is a great combo!!! I built a K20A2-(RSX TypeS Head)/K24A1-(02 CRV Block) with 11:1 CP Pistons, ACL Main and Rod Bearings, Carrillo A-Beam Rods, Removed Balance Shaft Oil Pump (replaced with K20A2 Pump), K20A2 Aluminum Oil Pan (5.5 Quarts). Tuned with K-Pro (also by me) made 244whp and 186wtq on STOCK K20A2 Cams, DC TSX Race Header, Custom CAI, and Custom 2.5 Exhaust. 04 RSX Type-S Transmission with Quaife LSD on BFGoodrich Drag Radials in a 94 Civic CX Hatch ran 12.6 at 109.5 MPH all motor. Never got a chance to run it on the gas before I sold it or turn it higher than 8000rpm.

I still have 2 Complete K20A2 Blocks and 1 Bare K20Z3 Block still in the box/plastic that I am thinking about building and will install it in my 07 Si as soon as the warranty is gone. I am glad that Honda went to a MAF instead of just MAP it will be so easy to tune the A/F Ratio.

sounds like a nice setup... what was this in?

I agree MAF FTW!

TJ213 · 03-10-2007, 11:11 PM

Quote:

Originally Posted by KShirza1

sounds like a nice setup... what was this in?

Quote:

Originally Posted by ProspeedCTR

in a 94 Civic CX Hatch ran 12.6 at 109.5 MPH all motor

Can we do a k24 now, or do we have to wait for a k-pro?

I remember seeing a TSX with engine management in it and they swapped out the gagues for aftermarket one since there was no engine managent for the TSX, maybe something like this could be done with the Si

ProspeedCTR · 03-10-2007, 11:30 PM

Quote:

Originally Posted by TJ213

Can we do a k24 now, or do we have to wait for a k-pro?

I remember seeing a TSX with engine management in it and they swapped out the gagues for aftermarket one since there was no engine managent for the TSX, maybe something like this could be done with the Si

We need to wait. The A/F ratio may be right due to the MAF but the timing will be off and it will detonate big time and can cause serious engine damage over time. I hope Hondata can figure out Honda's detonation program where if the engine detonates it will back off timing automatically. The old (first gen) K-Pro could not do this and Hondata admits they couldn't figure it out. Maybe we'll get lucky.

FA1con · 03-11-2007, 08:14 PM

you really wouldnt see any horsepower gains. if anything, you'll just run into fuel management problems and throwing off the ecu. the k20 head opn a k24 bottom would be better. its like putting b16 head on a b18 or doing a gsr head on a b20 block. i say just do the k24 swap. that way, you'll have more options as to what you can do performacne wise versus gettting parts for an si motor.

FA1con · 03-11-2007, 08:51 PM

you really wouldnt see any horsepower gains. if anything, you'll just run into fuel management problems and throwing off the ecu. the k20 head opn a k24 bottom would be better. its like putting b16 head on a b18 or doing a gsr head on a b20 block. i say just do the k24 swap. that way, you'll have more options as to what you can do performacne wise versus gettting parts for an si motor.

03-09-2007, 07:13 PM	#1 (permalink)
t1ny Senior Member Join Date: Jul 2006 Location: Killa Kali so cal Age: 20 Posts: 218 iTrader: 2 / 100%	k24 head with our k20 block??? i currently have a 2006 civic si and was thinking about getting a k24head to go along with my bottom end. can someone give me pro's and con's about this. im not to familiar with which k24 comes with which car and which one i should be getting for the most gains? thank you

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03-09-2007, 08:43 PM	#2 (permalink)
TJ213 Senior Member Join Date: Dec 2006 Location: Pennsylvania Age: 18 Posts: 3,051 iTrader: 0 / 0%	as far as I know the only k24 head with VTEC (with the high cam profile) out there is the one on the TSX

03-09-2007, 10:54 PM	#3 (permalink)
Nexx Senior Member Join Date: Dec 2006 Posts: 230 iTrader: 0 / 0%	Offtopic: How aggressive are the TSX cams compared to the SI and RSX-S? Also, in regards to gains, which would be better and still be relatively stock idle? (Something along the line of a GSR with Type-R cams)

03-10-2007, 05:33 AM	#4 (permalink)
t1ny Senior Member Join Date: Jul 2006 Location: Killa Kali so cal Age: 20 Posts: 218 iTrader: 2 / 100%	which engine code is from the tsx?... so if i was to change the head expectin a gain in performance i would be looking for the tsx head only rite?.... anyone know what the head and bottom end would cost around? separately?

03-10-2007, 05:59 AM	#5 (permalink)
IWANNAGOFAST Senior Member Join Date: Dec 2006 Posts: 209 iTrader: 0 / 0%	I dunno if this is a good idea, the tsx puts out as much hp as the si and rsx. I think most people go k24 block w/ k20 head from an rsx-s

03-10-2007, 06:35 AM	#7 (permalink)
1stk20z3 Senior Member Join Date: Apr 2006 Location: Hawaii Age: 20 Posts: 1,804 Casey iTrader: 0 / 0%	i was imformed that the head on the k24(TSX) is the exact same head that is on the si the part number is exactly the same so putting a k24 head on your si would be pointless!

03-10-2007, 03:48 PM	#9 (permalink)
ProspeedCTR Senior Member Join Date: Feb 2007 Location: South GA Age: 26 Posts: 130 Honda Technician iTrader: 1 / 100%	The K20/K24 is a great combo!!! I built a K20A2-(RSX TypeS Head)/K24A1-(02 CRV Block) with 11:1 CP Pistons, ACL Main and Rod Bearings, Carrillo A-Beam Rods, Removed Balance Shaft Oil Pump (replaced with K20A2 Pump), K20A2 Aluminum Oil Pan (5.5 Quarts). Tuned with K-Pro (also by me) made 244whp and 186wtq on STOCK K20A2 Cams, DC TSX Race Header, Custom CAI, and Custom 2.5 Exhaust. 04 RSX Type-S Transmission with Quaife LSD on BFGoodrich Drag Radials in a 94 Civic CX Hatch ran 12.6 at 109.5 MPH all motor. Never got a chance to run it on the gas before I sold it or turn it higher than 8000rpm. I still have 2 Complete K20A2 Blocks and 1 Bare K20Z3 Block still in the box/plastic that I am thinking about building and will install it in my 07 Si as soon as the warranty is gone. I am glad that Honda went to a MAF instead of just MAP it will be so easy to tune the A/F Ratio.

03-11-2007, 08:14 PM	#13 (permalink)
FA1con Member Join Date: Mar 2007 Posts: 35 iTrader: 0 / 0%	you really wouldnt see any horsepower gains. if anything, you'll just run into fuel management problems and throwing off the ecu. the k20 head opn a k24 bottom would be better. its like putting b16 head on a b18 or doing a gsr head on a b20 block. i say just do the k24 swap. that way, you'll have more options as to what you can do performacne wise versus gettting parts for an si motor.

03-11-2007, 08:51 PM	#14 (permalink)
FA1con Member Join Date: Mar 2007 Posts: 35 iTrader: 0 / 0%	you really wouldnt see any horsepower gains. if anything, you'll just run into fuel management problems and throwing off the ecu. the k20 head opn a k24 bottom would be better. its like putting b16 head on a b18 or doing a gsr head on a b20 block. i say just do the k24 swap. that way, you'll have more options as to what you can do performacne wise versus gettting parts for an si motor.