ENG: H-series Plenum on F22A6 runners

[Cb_JoeyG]

ok sry to bump an old thread.. but i have an f22a1.. i wann a kno whats the best combo for this im swap.. am i right that only the a6 runners will bolt up to the a1 head? that would mean to get the best outta a a1 i need to do the a6runners with h23 plenium and tb. and get the a6 ecu so i dont throw any codes.. that sounds right??

[wed3k]

correct, also a A6 cam to get that midrange power.

[Cb_JoeyG]

ok cool.. i also have a another question.. if i did this IM swap then could i also so an ecu swap outta the 92-95 prelude. a p12? i kinda gathered from another thread that it might mess with the timing or something along those lines on the a6/h23 im setup. just curious cuz im going to the local junkyard tomorrow and i wanna kno wqhat to grab. and a p12 sounds like a good swap cuz u get around 5hp if im not mistaken..

[wed3k]

im not sure if a intake manifold messes with timing regardless of what ecu you run. the P12 should be okay for the h23/f22a6 manifold as long as you retain your stock cam and you setup your butterflies to be vacuum controlled and not by the ecu.

[Cb_JoeyG]

im not sure if a intake manifold messes with timing regardless of what ecu you run. the P12 should be okay for the h23/f22a6 manifold as long as you retain your stock cam and you setup your butterflies to be vacuum controlled and not by the ecu.

ok so if i get the p12 and the IM swap i definalty need the IAB black box so the vaccum will control the butterflies? and what if i went with the a6 cam would that make any difference? of would i be locked at the a1 cam with the p12 and the IM swap?

[wed3k]

cant use the iab box with a P12 since the preludes with P12's used single runner intake manifolds with their f22's.

you CAN run the P12 with a A6 cam but you wont get the same power as with a PT6. it sees like you may jsut be better off with the PT6.

[Cb_JoeyG]

ok thx alot i was starting to gather that too.. it seems like between the pt6 and the p12 its 2 different paths i would have to take.. soo tmrw im looking for strictly a6 parts.. cam/pt6/im thx alot man i appreciate you steering me the right way

[starchland]

Hey, I was just wondering how you confirmed they h22/h23 im was the same thing?? part # or visual comparison...ty!

[owequitit]

Hey, I was just wondering how you confirmed they h22/h23 im was the same thing?? part # or visual comparison...ty!

The IM isn't the same, only the plenum/TB.

And the plenum/TB's aren't EXACTLY the same, as I have seen a few with some minor variations, but overall, they bolt on.

[starchland]

great just what i needed to hear thanks

[ATS666]

Just wanted to say thanks for the great pics, I was able to finish the swap quickly!
Everything worked out perfect, top end is alittle bit better now. It pulls bettter from 5.5k on. This is the only mod i have done to the car other then removing the intake silancer from the wheel well.


Thank you!!!

[owequitit]

Just wanted to say thanks for the great pics, I was able to finish the swap quickly!
Everything worked out perfect, top end is alittle bit better now. It pulls bettter from 5.5k on. This is the only mod i have done to the car other then removing the intake silancer from the wheel well.


Thank you!!!

Glad it helped you.

[KINGPIN33]

okay, so let me get this straight after reading all of this thread.

All I need are the following parts pictured since I have an A6 already.



Just the TB and Upper intake plenum?

Can my F22A FITV fit on the H23? Or do I have to get a H23 FITV? I know for the IACV, you can swap between them.

Thanks.

[owequitit]

okay, so let me get this straight after reading all of this thread.

All I need are the following parts pictured since I have an A6 already.



Just the TB and Upper intake plenum?

Can my F22A FITV fit on the H23? Or do I have to get a H23 FITV? I know for the IACV, you can swap between them.

Thanks.

That is all you need (in addition to new gaskets, etc.)

The FITV is on the TB on the H series (that big thing on the bottom), so the F22 version doesn't work, at least I don't think it does.

[KINGPIN33]

Thanks for the response!
This guy that I want to buy an IM and TB from doesn't come with the FITV... how much does an FITV usually run for?