4 Piston Racing K24Z7 Head is Finally Here

[@nigelmcphearson]

That looks to be a very high quality piece!

[@MattFahnix]

Subscribed for the install. Can't wait to see how it does.

[@Anastasiofan]

I have a few extra parts to order, but I'm going to try to get this installed within the next month. Seriously not looking forward to removing the downpipe. However I got a really good deal on some inline Pro studs from a forum member, so that helped a lot. Quick note when you're installing the cam tower, to make sure you index the rocker arms when you're putting the bolts through.

[@MattFahnix]

@@Anastasiofan We dropped the subframe to do the DP and it was a breeze. The homie that helped said that he wished he'd done his like that. After we dropped the subframe to do his clutch, we realized that it's really not that bad, and gives you a ton of space to work.

[@ericmoney9734]

A ported RBC and catless 3" DP, would put you around 240whp. I'm running a catted RV6 and the quality is definitely there. Keep us posted.👍👍

[@ericmoney9734]

@@looselipssinkships6543 a Z7 with a head package wouldn't? 🤔🤨

[@ericmoney9734]

@@looselipssinkships6543 oh, nahh. I'm saying, the head package, with a ported and polished RBC , and a 3" catless DP, and dyno tuned he'd be around the 240whp mark. I agree with you on that. K24 bottom with K20 head is the way to go on an all motor setup. He said it was for fun though, so 🤷‍♂️🤷‍♂️

[@Anastasiofan]

@@ericmoney9734 we will definitely see what happens! Lol. Y'all don't get too eager. I have to schedule an appointment with the tuner from m-f six to eight weeks out, and my first paid time off for my newish job is in May. I do think 240 whp is low, but you could very well be right!

[@ericmoney9734]

@@Anastasiofan these engines seem to disappoint in NA form lol. That's why everyone goes force induction and calls it a day.

[@Anastasiofan]

@@ericmoney9734 can't argue with that at all!

[@Felixfixitfelix]

I have this same set up with k24z7 bottom with the lower block girdle form tsx because different oil filter location and for the PRB oil pump swap with a PRB head swap k20a2-z1 head swap on 07 8th gen rbc cams made 304whp and 211wtq on pump 93 gas all oem rbc intake manifold with Dc5 type R throttle body 65mm rdx410 injectors set @70lbs fuel pressure witch make them 570cc 4-1 race head 3inc str8 SS pipe to vibrant 3in muffler has 6sp lsd with 4.3 final drive. 4.7 with k24 is too short and it seems to run out of gear when my rev limit is @8500 it’s already time to shift,with the 4.3 gives a little more of a stretch of the gear before I’m having to shift..but this set up has lasted me 6+ years now it’s currently out ju car for a refresh.doing head gasket,new valve seal,lapping all valve for fresh vale seat seal.new timing chain all chain guides and tensioner..the best Ultimate Frankenstein OEM build set up 💪🏾💪🏾💪🏾💪🏾🔥🔥🔥👌🏾

[@Anastasiofan]

Nice! Were you running out of injector when you decided to run 70 psi fuel pressure?

[@boostedfb6brah609]

Congrats on the head. 4 piston makes some great products. Subscribed to see where you take it.

[@robb9575]

I’m excited to see what happens

[@victorsabala2108]

the exhuast port need to done by hand to get the best results

[@Anastasiofan]

I think this may have been 1 of 1 or 1 of 5 etc. I don't know if they even offer this anymore. Kinda stopped paying attention to the Honda stuff once I got rid of this and sold the car. But yeah there was room for improvement. I think they cast their own head now if I'm not mistaken.

[@fffded]

Envy anyone who gets a box from 4Piston. You complained about price for a second but redeemed with the R&D comment, haha. That's wine taste in Honda power, get the beer money together ... :P

[@Hohmies86]

I’m 35 and quit drinking years ago, I have lots more money to spend on parts

[@dramatyst5661]

Shared on 9th gen fb group

[@Anastasiofan]

I think I follow that? What's it called officially, and I'll join

[@dramatyst5661]

@@Anastasiofan it's called 9th gen civics saiko speed it's a group , not a page.

[@turbocivicsi1383]

Wait on hold on a minute lol I was gonna order one of these but holy smokes it took a yearrrr to get you? I'll just build mine ig 😂 looks nice tho

[@76dro]

wow 700!!! its pretty at least

[@chefosoriano]

subbed for results and to inspire, im considering tsx swapping my 07 accord with 6 speed, or a closed deck shortblock and 6 speed swap my 08 legacy gt. quite the price difference but the subie has all supporting mods already but love the honda so much!!! lol

[@pruvengsx1]

So heyyyyy I have a question what head gasket to use on the k24z7 with a 87.5mil bore?

[@Felixfixitfelix]

Yeah for NA power on your k24z7 bottom end would have been getting the PRB head swap from the 02-06 rsx type s or even with the k20z3 RBC head swap off the 8th gen si.All oem tuned with head swap will easily see 300whp with around 200-210wtqhp

[@john-martin]

They didnt even touch the exhaust runners on the 1 and 4 cylinders? wtf?

[@Anastasiofan]

Man go ask them.

[@losgorniacos]

@@Anastasiofan did You asked? If thats true

[@Anastasiofan]

@@losgorniacos I assumed it had to do with the delicate walls due to the coolant passages

[@BellozeCountry]

I have a k24z3, I wonder if I can do d same and get some more power myself? Similar head i believe exhaust manifold looks d same, is it one intake one 3 lobe cam?

[@IdrisFashan]

Did you ever see aftermarket camshafts for your Z7? I have a Z3 and I have never found any... 🤷🏾‍♂️

[@Anastasiofan]

COMP Cams has a re-grind part number for these. Contact [e-mail]

[@cartere9981]

There’s like 2-3 options now skunk 2 , and 4 piston racing for sure make some, probably gonna cam my tsx and use 4 pistons ported head whenever I go to replace my vtc gear, I’m starting to get the dreaded k24z7/3 cold start grind and I figure if I’m gonna be digging in and replacing shit I’d rather it just all be new stuff incase there’s damage on any of the valve train from the grinding new head, valves and stage 2 cameras

[@camdenconyer3]

What did it cost I’m looking into getting this done.

[@TheCd5apple]

where the numbers that's what i want to see

[@MilSpecHoagie]

Are you going to do a typeS oil pump swap? I didn't know anyone even made cams for this head?

[@Anastasiofan]

I hadn't planned on doing the pump swap, but I know it frees up a fair amount of power. It's tempting but wow is it expensive for what it is. My old job, COMP Cams is regrinding my old camshafts for me. If it's something folks are interested in, COMP has lobes developed specifically for regrinding these stock camshafts. I can post the specs if you'd like.

[@Bboyadvice96]

@@Anastasiofan what are the regrind specs? If i may ask.. I wanna regrind my k24z3 stock cams and you probably know its a pain in the butt to find camshafts for the k24z motors.

[@Anastasiofan]

@@Bboyadvice96 Contact [e-mail] - Our head valvetrain engineer developed these lobes for me. It will just be a re-grind of the stock camshafts - added duration and lift, better lobe profile.

[@Bboyadvice96]

@@Anastasiofan thank you! Much appreciated 🙏 man

[@Anastasiofan]

@@Bboyadvice96 There's a thread on 9thgencivic forum that deals with this entire cylinder head topic. I posted the factory cam specs and the regrind specs. You're welcome!

[@Chris9thGen]

Is it actually worth the money ? Bcuz I hear a lot of 2 sides to this ,

[@Anastasiofan]

I'm out of the Honda stuff now. But I believe they are casting their own 4 port exhaust r40 head now.. you'll have to look it up.

[@hthmoney11]

Any updates with this head?

[@Euxable]

Ever get it dyno’d?

[@Anastasiofan]

I did not. I sold the car, head and moved on.