ENG: H23 Intake Manifold Swap (56K die!!!)

[LinX]

cokinut discussed this in his diy h23 IM. You're gonna wanna check there.

[UrDoneSRH]

k thanks, ive read through it a whole bunch of times, but never noticed that part. im gonna prolly start taking it apart tonight after i eat dinner.

[sulimed]

The manifold I have doesn't have a place to put the air starting valve. I'm a bit concerned with the intake manifold I got because it didn't come with a thermostat housing either. Anybody know what the deal is here?

on the H manifold the ASV gose on the front (where the FITV "fast idle thermo valve", on the A6 is located). on the H manifold the FITV is on the bottom of the TB.

[LinX]

on the H manifold the ASV gose on the front (where the FITV "fast idle thermo valve", on the A6 is located). on the H manifold the FITV is on the bottom of the TB.

Figure that out a looong time ago but thanks for actually taking the time to respond also, jdm IM(h22) have a block off plate for the air boost valve. I would take mine off if I had one too.

[UrDoneSRH]

does it matter if my h23 IM is from a manual or auto tranny? and secondly, If it does matter (I have an auto) and its from a manual tranny what do i need to do? sorry in advance if this was already covered, ive read through the walkthrough so many times and cant recall see'n something about it. thanks

[accordaffair]

All you need to do is swap the throttle rotor, which cokinut tells you how to do.

[UrDoneSRH]

a buddy of mine recommended that i bore out my h23 intake manifold before i install it, i can get it done for about 50 bucks. would you guys recommend it?

should i also replace my injectors? how do i tell if they need to be replaced?

[Frost_CB7]

so h23 intake manifolds will fit an f22a6, but an h22 intake manifold wont? how come?

[owequitit]

so h23 intake manifolds will fit an f22a6, but an h22 intake manifold wont? how come?

The bolt pattern is different. The flange is different, and the ports on the H22 are larger I believe.

[LinX]

I was unlucky enough to get an h22 intake on accident and it doesn't match up at all with the f22. Kinda sucked because it was clean as heck and a nice size.

[UrDoneSRH]

do i need to buy a new tube that goes from the h23 thermostat housing to the water pump?



part #13 in the center is the pipe i beleive

[Accord R33]

Added DIY to wiki...

http://www.cb7tuner.com/wiki/index.p..._Manifold_Swap

[LinX]

nope, you reuse the coolant tube.

[UrDoneSRH]

Reinstalling everything.

- Well, out the black box on the passenger side of the car you have like 3 hoses that come out on top, # 21,20 and 24 or something, 20 and 24 go to the intake manifold (two plugs right next to each other on the back of the mani), the #21 is on the throttle body, Then a red hose goes from the big port on the throttle body to the charcoal canister, and the #3 hose goes from the charcoal canister to the bottom of the black box. FPR goes to the center port on the intake mani, little sensor thing on the drivers side of the mani goes to your intake tube.

I dont have the plug on my intake that the bold text quoted above connects to.... what should i do? im all ready to install it right now and just noticed that.


EDIT: I noticed on a pic of someone else's h23 IM that they just capped the ASV valve on the front. Im just going to do that, correct me if im wrong ill be checkin about every 15 minutes. im starting on the swap right now, wish me luck, i got 2 friends and my grandpa is visiting if i have any major issues. and of course you wonderful homies on here.

peace

[UrDoneSRH]

almost done with the swap, i got everything done except setting the tps and i managed to lose a bolt somewhere along the way... its the 17mm one that attatches to the fuel rail... im going to just try to buy a new one today on my lunch break.