Jxi8s2k

right now, i'm in the process of searching through every forum, gaterhing information, and learning as much as i can before i post asking questions. i've read about the G23s, SOHC turbos vs DOHC turbos, etc. as i started reading, i saw that many people had different ideas about which set-up was better; a SOHC turbo or the DOHC turbo. i have the f23 motor and i'm debating on whether i should turbo my SOHC motor or buy an H22 head, build the g23 then turbo it. could you guys tell me what the benefits of having a DOHC turbo g23 would be? could the motor rev higher? would it produce more top end torque because of the h22 head?

D-booster

you just answer your own questions

Jxi8s2k

so a DOHC turbo'd g23 would be bad-***

JDM turbo DC

iTrader: (6)

DOHC, i really do believe that the extra cam will benefit the head to flow smoother and faster.

sohc_turd

I think the best setup is the one that best fits your needs (budget, HP goals, and availability).

Semnos

True, but the head design is different and that ,makes makes it a better flowing head stock.

Jxi8s2k

so what yall are sayin is that DOHC turbo would be more productive? how come some people say that SOCH turbos are better?

riceball777

nobody says sohc is better
its only better for the money
sohc turbo = most hp per $$

nonvtecD

Because they are so freaking cheap...

RyanEJ8

Just ask Bisi what he thinks of the F Series heads. The SOHC are better.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bisimoto &raquo;</TD></TR><TR><TD CLASS="quote">

I like the F series (non-vtec) for the following reasons:

1. Port angles (higher and superior to the b, h and d)
2. Valve angles (I can get away with designing radical lift cams without the valvehead collision factor of dohcs)
3. Less rotational mass and less friction loss (one cam, instead of 2)
4. Uncharted waters (I love experimenting)
5. Cost (these motors are cost effective)

The head holds the most potential for power. I am impressed with the flow numbers we were able to obtain from a modified stock F22 head. The biggest advantage that dohcs have is the ability to tune lobe separation. SOHCs have to have theose grinded in to change. Once you have the perfect lobe angles, it doesnt matter.

4door, you should perform a leakdown on you motor. It seems that you bent a few valves.

Secksi, my F makes 289 ft/ibs of torque, on gasoline, to the crank.
</TD></TR></TABLE>

TheHooded_Mike

Why spend money swapping to a dohc when you can hit your goal with a sohc? That's the answer right there.

Jxi8s2k

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanEJ8 &raquo;</TD></TR><TR><TD CLASS="quote">Just ask Bisi what he thinks of the F Series heads. The SOHC are better. </TD></TR></TABLE>

hes talking about the non-vtec head. i have the f23 vtec. does that matter based on his conclusions?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheHooded_Mike &raquo;</TD></TR><TR><TD CLASS="quote">Why spend money swapping to a dohc when you can hit your goal with a sohc? That's the answer right there.</TD></TR></TABLE>

thank you sir

RyanEJ8

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Jxi8s2k &raquo;</TD></TR><TR><TD CLASS="quote">

hes talking about the non-vtec head. i have the f23 vtec. does that matter based on his conclusions?</TD></TR></TABLE>

Some of his conclusions would still apply to the F23 VTEC head.

Mr.Hankey

It depends. I dont believe in the whole h22/h23 head on an accord. I just dont think its cost efficent or even worth it unless you already own the head and have no use for it. The cost of buying an h2x head and retro fitting it, is more then just building the head you already have. I would talk to a builder before even attemping this build, and im pretty sure they would tell you the same. If you want to turbo your car, just use the engine you already have. After all is said and done, you will have nearly the same performance as the turboed G23 with your turboed F23, and you will have a more reliable engine.

Edit: Also, the h2x head wont reliably make you rev higher. If you want to rev higher, you cant just throw the head on and hope for the best. For your engine (remember this isnt a civic) you need the other supporting parts to have a high revving motor that doesnt blow up.


Modified by Mr.Hankey at 12:55 AM 11/7/2006

Jxi8s2k

so as long as the supporting parts are durable enough, your engine could rev faster? so its redline potential is determined by how rev friendly the parts are??

Mr.Hankey

Yeah, i guess you can explain it like that. My best advice for you is to talk to an engine builder before you start buying parts. They will explain to you what you need to get whatever hp youre looking for. They'll also explain r/s, how to get your engine to rev high without breaking parts and everything else you need. Ive seen dumbasses put h2x transmissions in accords expecting them to rev to 7k+ rpms and the only thing they did was break their engine. The thing is, you cant see things on the internet and want this part and that part, all your parts should benifit your goal and work together.