F23A Beast Mode On A Budget

Here we take a look at the F23a block, compared to the H22a1, as well as the K20. The F23a architecture shows that it is clearly an "inbetween" motor. Steel main caps, integrated girdle, but not quite as beefy as the K. It is easy to see why the F23a should be your candidate for the next H motor project. I am hoping the new godzilla deck insert for the F23 will help fill the void between stock block H motors and a full sleeve project. Since the F23 has conventional liners it makes the entire build much cheaper and gives you the ability to run a much wider range of pistons than just the 1-2 FRM compatible options there are for H series.
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[@curtisadams7513]

F20b with f23 crank and rods and k series pistons. I think it would be a good combo! That’s what I’m wanting to do anyways.

[@jakubhladysz6383]

Thanks for putting up this video! I appreciate the sharing of your knowledge. I have an H23a that I am gonna build with stock bottom, once she blows up then I will track down an F23 for more user friendly sleeves. Keep the Hondiction going

[@badguysworldwide]

Glad I could help

[@thatonec10guy62]

Can you do a build guide for the f23a

[@julianpat6146]

Fr

[@chrisholden2952]

I've got 2 f23a1 motors now. Wanting to build one for my coupe, and one for my sedan. I'd like to see if there's a video of a build up for them?

[@eddysevilla9648]

❤

[@michaelelliott3456]

f23a heads share a valve with the j30a1, j30a4/5 are +1mm larger valves (30/35mm) that can be cut into the f23a head with ease. also f23a shares a valve spring with J30a1 so you can use J32A2 valve springs in the f23a head. with j30a4's 35/30mm valves and port work you can hit 300 cfm with ease. Also j30a1/4/5 pistons fit in F23A blocks along with the commonly know k20 pistons fitting. JNA1 hybrid J30 has the best pistons to use with H22 heads being that they are + dome and the valve relifes are the same size. but don't sleep on the F23A head, just use J series Valvetrain in it and port it.

[@franciscodeandradejr]

Excellent contribution, according to your knowledge then I must work like this the head of the f23a?

[@franciscodeandradejr]

Can I use J32A2 valve springs (with or without retainers and seats) with J30A4 intake and exhaust valves and do port work?

[@michaelelliott3456]

@@franciscodeandradejr yes, the j30a4 valves will need to be machined. you only need the j32a2 springs. you can use j32a2 valves as a +2mm upgrade but only the intake valve is larger. exhaust is still 30mm.

[@franciscodeandradejr]

A video tutorial of this work for the f23 head would be very good and very helpful, there are many of us who have an accord with that engine and we want to improve it, but we do not resign ourselves to placing an f22 head and losing the vtec and having to change all the intake and ignition system, we want to do it with what we have and we know that it can be better only that nobody has given the task of doing it and I think that the f23 is a good low cost engine and that it could be excellent to improve if they existed more high-performance accessories

[@dekonfrost7]

So from my teen years with ford small blocks 40 now making these go carts. They are ptetty awesome

[@mejia76O]

i been racing fseries since 2003..great engine.

[@camroberts4169]

What do you think of the f23a4?

[@mejia76O]

@@camroberts4169 nah its ulev, less aggressive camshaft, intake manifold and ecu. get a jdm f23a no number

[@errajiadnane6553]

​@@mejia76O but the cylinder walls are weak I saw a guy broak them making 360whp

[@onelowvdub]

Love the f23a

[@raymundorubio2375]

I have a 2002 accord SE FA23 Vtec it's hitting 230K but love it I was interested on modifying the engine completely overhaul,rebuilt Lmk bro I stay in los Angeles 👍

[@davidyancey7558]

Look up 9p performance or Frankenstein accord on Insta

[@89hybrid88]

My understanding is that most of the f23a variations are very similar.

[@MrZen20]

Which ones aren't? F23a4 owner here

[@Jacobprogammer]

@@MrZen20 the f23a1 and f23a4 are basically the same except a different ecu/sensors and a different exhaust manifold and cat

[@alexc.8424]

Please do an F23 build guide

[@michaelkuskie4892]

I have kind of a silly question... what intake will fit on an f23a do you have any suggestions? I'm putting 350cc injectors having ecm retuned gonna change cams and gonna go with wiseco k pistons

[@dorianwike2400]

any h22 intake will fit the bolt pattern, however, you will need to port-match it to the head.

[@uchiha_d1334]

Ty for this. Good info to know. I’ll never touch any of these as I’m a k person now after my b series days but still great to know.

[@randyp5089]

hey bro say someone wants to make around 300 hp on a f23a1 block what would be components you would suggest to upgrade to make that manageable and yet still be a daily driver?

[@untoldguitarist]

Higher compression pistons, and bigger cam, and your main bolt ons, etc. should easily get you to around the 300hp range

[@MichaelSvenson]

@@untoldguitarist Which bigger cam would you reccomend? I just did a swap to an f23a and curious about beefing it up in the easiest ways possible.

[@untoldguitarist]

@@MichaelSvenson Bisimoto, Delta, or even Web cams. The SOHC Fseries engines don’t have huge amount of aftermarket parts. But there are plenty of options to choose from, to build and gain some massive performance out of your F22/23 setup

[@MuddafukhingdisKUST]

@@untoldguitarist Is it really possible to get to 300hp all motor on an F series? I find it doubtful

[@untoldguitarist]

@@MuddafukhingdisKUST Depending what parts you have installed and running Hi comp, I think it's doable.... Especially if you have an aggressive cam

[@evanovski]

is the F girdle interchangeable with the H (I expect not). Someone needs to manufacture a solid girdle for the H, similar to that if the Golden Eagle for the B-series

[@vebzuia4336]

Just do a g23, h22 head on an F-series block w/ b series tranny. Basically an H2B.

[@Shadowolf-gg8dr]

What is a Godzilla deck insert?

[@michaelelliott3456]

j30a1 and j30a4 pistons also work in a f23 block.

[@davidontiveros554]

They do?

[@michaelelliott3456]

@@davidontiveros554 yes I used them in my last f23 block to get a specific compression k pistons couldnt get.

[@barneymiller7894]

Fuckin excellent information, you just changed my whole build!

[@michaelelliott3456]

@@barneymiller7894 JNA1 hybrid j30 pistons are the best way to go.

[@michaelelliott3456]

@@barneymiller7894 also J32a2 valve springs fit in f23a heads, j30a4 valves are +1mm upgrades for f23a. j30a1 and f23a1 have the same valve and valve spring. so any j series spring or valvee can be cut in.

[@jimmysway3240]

Been looking at h swap for a while since I snapped the timing belt on my f23. I know the sleeves in the h are weaker but they aren’t many internal build kits for the f series as it is the b/k/d where is everyone finding them??

[@theedge5584]

K IS THE WAY

[@lissettelopez8331]

If you got the money yeah.

[@isaacarmijo9385]

d series supercharge is the way to go

[@hdrenginedevelopment7507]

Someone should actually build a real G series motor. G25A 5 cylinder from the old Acura TL...would be the ultimate in baller SOHC. Inline 5 sounds so awesome turning some revs.

[@budyeddi5814]

THIS. I've always been fascinated by the wail of 5cyl engines. Reminds me of the v10 sound👍👍

[@hdrenginedevelopment7507]

Bud Yeddi yes, with enough rpm, a inline 5 will basically sound like an even fire V10, since they have the same cylinder timing. Now those odd fire V10’s...that’s a whole different kettle of fish in the sound department. I’ve never actually heard a Honda 5 cylinder...didn’t even know they made one until I saw one in the junkyard a couple months ago. It was complete and intact, too.

[@barneymiller7894]

I bet with how interchangeable Honda designs seem to be there's a factory piston you could fit in there for a compression bump

[@texasfoci]

Would it be better to run the F23 as a long block setup given the Vtec or run as a Hybrid F22/F23 ? I'm in a 94 Prelude and I want to go Boosted and i have all the motors and plenty of supporting modifications and Tuned ECU. I'm just waiting on my decision to go F23 or F22/F23 hybrid.

[@untoldguitarist]

As far as I know, the only difference between a F22 and F23 block is the bore of the pistons. 85mm(F22) and 86mm(F23) other then that, they’re practically identical blocks

[@christopherelrod8788]

The f22a head flows better than the f23 head. I'm not sure if you need to do anything to mate the two heads

[@christopherelrod8788]

I've been thinking of doing an f23 block with an f22a head. Do you know if I'd need to plug drain ports or modify it in any way? I see people do the swap but they never tell if they did amything

[@Jacobprogammer]

Should just bolt up

[@omnidoesnt]

I’m running f23a4 block and f22a6 head bolted up no problem. Just you want to use the the f22a water pipe on the back of the engine if your going to run the f22 intake manifold.

[@dorianwike2400]

No, you do not

[@waynejordan7473]

Thinking about doing thi swap to my fourth gen

[@troxstarr]

Cant u just swap the f23a gurldle to the h22a

[@Live2die777]

Is a k24 better?

[@rollthelosingdice]

Was that H22 cylinders honed? Are those FRM sleeves?

[@akordaddikt1812]

For the g build do you need h22 waterpump gear?

[@dorianwike2400]

Yes

[@1Man77]

Nice video. Do you know the best way to take the timing belt adjuster bolt off F23?

[@dorianwike2400]

if you are referring to the long one in the center, just take it off with an open-end wrench. There is a bolt integrated near the base of the stud.

[@G23VTEC]

Where do i find a deck insert or would i have to make it

[@LatinoAD]

I was thinking f23 sohc or f22 sohc turbo for 800hp awd with a b series awd trans.

[@fmifu4100]

How long you plan to drive it for?

[@danielaz13]

I have a ceased g23 / h2b . H22a head h23a1 block . Thinking of just running a f23a1 and calling it a day.

[@timm5970]

what are your thoughts on the f series heads? I know you love those single jingles so have you messed with the f22a heads? I always wanted an f22a head/f23 block engine

[@ThmsPtrsn]

F22a non-vtec head have extremely good flow rates when ported, non ported the f23 is just as good, you will get a good compression bump when putting the f22a head on as well, I've seen a guy run stock f22a/23 hybrid at 180 hp and 160 lb/ft

[@timm5970]

@@ThmsPtrsn yeah ive read a bunch of stuff about it but never built one. I think it would be cool if badguys built one. id like to see what their porting could do

[@josechaves8240]

F23 head is better than f22 stock form. Ported even better. I ran one for years before going with a h22 Type S head on my f23 high comp build.

[@timm5970]

@@josechaves8240 the f22a head is better ported. Thats been covered quite a bit

[@josechaves8240]

@tim m yes you are right, but that's ported. Port the f23 head and it will be better. Yeah it's like a Vtec-E head etc etc, I would still choose it over a F22 head regardless of what Bisi says or whatever. Roller rockers, better intake mani etc. What's been covered is a modified f22 head against a stock f23(unfair). Don't always believe what you read....

[@Fackler91]

What pistons and rods would you use in a f23

[@dorianwike2400]

f23 rods are the only ones that will work, but you can use h22, k20, or f23 pistons.

[@benjaminwatson7868]

@@dorianwike2400 correction h22a pistons with some boring but k20 pistons without just gives more compression

[@dorianwike2400]

@@benjaminwatson7868 ahh, i thought h22 would just drop in. With k20 you can get really hight compression. Great for all motor 😃

[@benjaminwatson7868]

@@dorianwike2400 ya the pistons are like 1mm bigger far as I’ve seen

[@kennethfrazee2540]

@@benjaminwatson7868 ya they come in around 11.5ish but the problem is k pistons are reverse offset to an h/f

[@Moneygrip]

What do you do about the short rods and crap rod stroke ratio?

[@badguysworldwide]

nothing but enjoy the massive tq

[@Moneygrip]

@@badguysworldwide so where do you set your limiter at?

[@badguysworldwide]

with h beam 9000 lol

[@Moneygrip]

@@badguysworldwide noted. Im going to send my h23a to the moon

[@TheycallmeRpCratchet]

What kind of rpm will this bottom end take with aftermarket rods and pistons??