h22 or h23 head on f22a1 ?????

[ToASteR]

i was wondering if a h22 or h23 head fits on a 91 f22a1 block??? if it does what modifications do i need to do ??? and how fast would it run??? Thanks

[ridin90accord]

well i dont think it will because it is dohc and ours is single over head cam... soo... i am almost positive it wont...

[TheFirstNutZo]

Nah, that won't work. You have to stay within a series, so you can swap heads from the F22A1,4,6 and F22B1 (and I think B2)... but thats about the most you can do of a head swap. H22/H23 heads ARE swappable though (not sure if its easy, but i've seen hybrid engines before).

What are you looking to achieve? If you are looking for all engine stock(ish) performance your best bang for buck WILL be swapping to a H22 engine, which will give you a heft horsepower increase. If you don't have $2500 to spend, consider a few other things:

You can take parts off of the F22A6 (same head and block, different peripherals), and get up to 140HP 142 ft/lbs TQ. Then add your intake/headers/exhaust and you'll be up to at least 160hp (maybe around that in torque haven't really seen many torque tests).

Then you can increase your compression and step to 92/93 octane gas (I've seen some cars with 11:1 compression on a f22a engine) and you'll probably hit 190-200hp.

Or, another route, is of course turbocharging. The stock F22A engine runs a compression of 8.8:1, nearly perfect for turbocharging. If you run about 7lbs of boost on a non-built up engine, it'll give you about 50HP at the wheels increase (thats going to make a massive difference, thats probably going to increase your power again a third at least over the stock 120hp (probably like 90 at the wheels)). Then, as you get more money, replace parts in your engine with higher strength counterparts until you have your engine fully built up, then you should be able to safely run about 15lbs boost on the engine giving you 280-300HP (total) at the wheels.

That ought to run on 92/93 octane gas. If you go up beyond about 18lbs boost you have to increase the octane above that, and that gets really expensive. I have seen dynos of F22A6's running 26LBS of boost, running 118 octane gas and pushing about 650hp.

Turbocharging is one of the most effective ways to get power out of your engine, but as our cars are not naturally turbocharged it gets expensive to add a turbo system.. but its really not that bad in comparison with other gains of a similar nature...

you could also get a 50shot or 75shot nitrious oxide kit (not good for the engine, but not a real problem until you hit about 100 shot.. after about that you need to start building up the engine or your going to break it), but unile a turbocharger the nitrious has to be refilled after each use, which can get expensive pretty fast... and the turbo is always on while nitrious is a temporary boost.

IF you are going to turbocharge, you really want to turbocharge one of these three engines: F22A, H22, or H23. The F22B2 is OK (not as good as F22A tho), but the F22B1 is not a good candidate. For the most part, you do NOT want to turbocharge a VTEC engine, the only VTEC engine that is good with turbo and fits in our cars is the H22, and those can hit 800HP with really high boost levels (like 25-30).

SO either get a turbocharger and build up your F22A, or get a H22/23 and turbocharge that. Those are the best options to get a wicked fast car.

[ToASteR]

thanx that really helps now i know my options even more

[TheFirstNutZo]

glad I could help :) I personally want to maximize my stock engine (F22A6), as apposed to giving up on it and swapping (if I did swap, I'd put a H22 head on a H23 block)... our engines have a shitload of potential if you are willing to research, get parts fabricated... really put the time and money into it. Same goes with looks, if you plan your car, put in the time and money... you can have an incredible looking car, which is something a lot of newcomers doubt they can ever achieve with a 4th generation accord... but its possible :)