i hve an h23a sitting in my garage it has a spun rod bearing and now thinkinb about putting the intake manifold on my f22 what would i need to make this work???

 

a new gasket..?

 

thats it? lol i was expecting to have to change thigs considering the h23 is mpfi

 

so is your F22A

depending on which F22A you have, (A1, A4, A6) you may need to add some things to use the IABs (butterfly secondaries).

it shouldn't be too hard to find some pics and maybe a how to on doing this swap. it seems pretty common

 

Why not do the Hybrid IM swap? More power I heard.

H23 Plenum mated on F22A lower IM. Search on youtube; there's a DIY on this.

 

this only works with the F22A6.

the runners are nearly identical (between H23 and F22A6) so more power from the hybrid compared to the complete H23 manifold seems unlikely. it's just easier if you already have an A6.

 

I thought I read somewhere that the F22A6 runners are shorter than the H23/H22, and that the H23/H22 plenum and throttle body are larger. I could be wrong, I've never done the swap myself. I have read so many swaps and hybrid threads on CB7 tuner. It's hard to remember all the specs.

I thought it went something like;
F22A6 lower manifold(runners)
H23 upper manifold (plenum),
H23 Throttle body,
F22A6 cam and
PT6 ECU.

 

well first things first, before everyone goes further with suggestions, I think we need to make sure what F22 the op has? All that was said is it was an F22.. not F22A or F22B.

So which is it?

also, the F22A6 runners are a different length than the H23A1. And the H23A1 plenum is larger than the F22A6. That is why it is very common to see people mixing F22A6 runners with H23A1 plenum and throttle body.

 

Yeah I kinda missed that part

 

right now without looking at it its in a 90 accord

 

if my facts are straight, the 90 accords came with and F22A1 or F22A4 (EX model). so H23 plenum would not be a direct fit.

i was unaware of the difference in runner length. good to know

 

ok thanks guys!!! if anyone knows that i need to make it work please im all ears

 

so then you have a F22Ax engine, providing there has been any engine or head swaps done to the car previously.

correct, you cant just put a H23A1 or F22A6 plenum on a F22A1 or F22A4 runner section. But the full H23A1 and F22A6 intake manifolds with work just fine with any of the F22Ax heads. It's the F22Bx heads that require modification to make it work.

you can either go full H23 IM swap, full F22A6 IM swap or you can do a mixed setup like described earlier.

Remember that you'll want to make sure you get the black vacuum tank and with sensor as well as the ECU for a F22A6 if you want the secondary butterflies to function as should. Or you can do what others have done and remove the secondary butterfly plate and not run any of that. Personally, I would probably get everything so that I could run the secondaries.

 

ok well i have the whole h23 motor so if i got my faqs straight then on my f22a1 the h23a im will work if i have the whole intake manifold setup. what about the injectors? and do i just keep my same ecu?

 

x2

 

the basics of what im trying to say is please someone spell it out to me. so i cant keep my a1 ecu? and all the **** thats on the h23 intake manifold wont work?

 

I accept with information:the F22A6 runners are a different length than the H23A1. And the H23A1 plenum is larger than the F22A6. That is why it is very common to see people mixing F22A6 runners with H23A1 plenum and throttle body.

 

If you want to keep your a1 ECU, the intake air bypass (IABs, aka secondary butterflies) on the H23 intake. Will not be controlled via electronic control from the ECU. However you can still hook the IABs up directly to a vacuum source and have them activate with manifold pressure.

The suggestion is that everything on the H23 intake will work as it is designed to. If you use the A6 ECU. No one said you couldn't use your A1 ECU. We just suggested that you do otherwise.

Do a search for IAB delete or H23 intake swap. I'm sure there are more than one or two threads pertaining to this same subject. You may be able to find some more information.