k24a1+a2/z1/3 head: Built or Stock?

[thechromecoyote]

So my goal is the Honda big block, k24 block + a2/z1/3 head and IPS cams.

I got some time to start saving for the parts, but Im interested to hear what member's opinions are about whether I should go full build (and whether I should go OEM or After market) or go w/ stock.

I want a reliable DD, with spirited driving. I might go FI via supercharger down the road but the purpose for now is NA.

My goal is in the 225-250 WHP range.

Im also considering going a staged build. I want to start with a k24a1 swap w/ cams right off the bat, but I was thinking of selling my a3 block and buying a k24a4 bareblock to start building whilst I enjoy the 2.4 in my egg.

Labor will all be done by me, and Im not experienced with building so Ill be taking my time with the block in my garage and the helms manual glued to my hand.

Will update with parts recommendations as the list grows. And I hope this is a good starting point for people looking to do similar things.

OEM Big Block Stock
k24a1 shortblock
k20a2 head w/ IPS suggested Valvetrain:

• Dished retainer - 14765-PRB-A01
• Yellow outer spring - 14761-PCX-003
• Red inner spring - 14752-PRB-A01
• Max safe rpm: 8500rpm

Kpro


OEM Big Block Build
k24a4 bareblock
k24a2 Rods/Pistons
k20z3 Oil pump
k20z3 head w/ IPS suggested Valvetrain:

• Dished retainer - 14765-PRB-A01
• Yellow outer spring - 14761-PCX-003
• Red inner spring - 14752-PRB-A01
• Max safe rpm: 8500rpm

05-06 TSX Camshafts
Kpro


Aftermarket Big Block Build
k24a4 bareblock

Davis:
TSX Rods/ 10:1:5 or 10:1 pistons

Doug:
Blueprint UltraLite rods and Wiseco pistons.

k20z3 Oil pump
k20z3 head w/
IPS Rec OEM Springs/Retainer combo:

• Dished retainer - 14765-PRB-A01
• Yellow outer spring - 14761-PCX-003
• Red inner spring - 14752-PRB-A01
• Max safe rpm: 8500rpm

IPS k2 Camshafts
Kpro

[thechromecoyote]

sorry for having to repost, I needed to edit the poll and I didnt know how without deleting the whole thread and starting over. Luckily no one posted yet

[davisj3537]

I'd say go with the oem combo. It wont put any extra stress on the tct and it will still work with the cams. I'm talking head only here...I vote to build that block sir

[thechromecoyote]

I'd say go with the oem combo. It wont put any extra stress on the tct and it will still work with the cams. I'm talking head only here...I vote to build that block sir

Any suggestions on what Rods/Pistons to go with then? What compression to run, etc?

[FoReVaPmP]

Any suggestions on what Rods/Pistons to go with then? What compression to run, etc?

Do U want to DD your build?

[thechromecoyote]

Do U want to DD your build?

Yesh... Its mentioned

Pump gas preferred, and with the option of boosting it later.

I dont want 300+ whp NA, so I know I dont need to run crazy compression

[davisj3537]

I'd say go with some tsx rods and micropolished crank with some mild 10:1 or 10.5:1 cr pistons. I don't have a brand rec. I don't think it is as important to have forged rods as it is the pistons since you wont have the oil squirters.

[talonXracer]

There are many K24A1's that have been rebuilt with stock TSX parts and are running fine.

but if it was my build, it would still use the same parts as I am going with on my present K24 build, Blueprint UltraLite rods and Wiseco pistons.

[LondonEP]

I'm on 100% oem parts k20/k24 engine making 220whp and 175wtq w/ the crap EP specific DCRH and only 60mm exhaust, also stock mani and TB.

I have RBC ready to go w/ 65mm TB and hopefully hytech header / 70mm exhaust coming mid summer. I'd like to think I'll be making near 240whp and 180's wtq. With OEM reliability on pump that's pretty hard to beat, as specially since I DD my car.

[thechromecoyote]

I'm on 100% oem parts k20/k24 engine making 220whp and 175wtq w/ the crap EP specific DCRH and only 60mm exhaust, also stock mani and TB.

I have RBC ready to go w/ 65mm TB and hopefully hytech header / 70mm exhaust coming mid summer. I'd like to think I'll be making near 240whp and 180's wtq. With OEM reliability on pump that's pretty hard to beat, as specially since I DD my car.

Are you rocking a stock k24a1 w/ an a2 head or OEM swapped internals?

[bchaney]

I voted for aftermarket build, might as well go all out and do it right the first time.

You should decide if you want to stay NA or go FI and base your pistons off of that. Seems like a waste if you go for the middleground, you won't be getting the best of whatever path you decide.

[dobbs02si]

If your staying n/a I dont see how you could go wrong using the tsx rods with some 11:1 wiseco's. Factory reliability with just a touch of insurance

Oh yeah, I dont know if ShadowMd has his build posted again but he laid down some solid numbers with the a2 head/z3 cam combo

[davisj3537]

Are you rocking a stock k24a1 w/ an a2 head or OEM swapped internals?

He has the a2 head with tsx internals or he wouldn't be able to pull those numbers with those mods.

If your staying n/a I dont see how you could go wrong using the tsx rods with some 11:1 wiseco's. Factory reliability with just a touch of insurance

Thats what I'm saying holmes:thumb: Gotta atleast have forged pistons for the lack of oil squirters...Its just simple insurance. Leave the valvetrain as an oem combo though...definately.

[clizoman]

daily driver?..

[Deadphishy]

I'm still debating if i should pick up some cheap stage 1 cams just for a little extra push over stock type s cams.