soo basically i tried doing the h23 intake swap onto my f22b2 and well the coolant hard pipe just messes everything up. me and my friend tried bending it to make it fit but that just made it worse and then the gasket got messed up. so basically i dont have a car till i get the new hard pipe and gasket. so the people that have done this, what hard pipe did you use? also im really confused about the vacuum hoses and sensors, can anyone put me in the right direction and i've already searched and cant find anything cuz im looking for pictures

 

morning bump

 

I don't think the collant pipe is your biggest problem.

Have you verified where the leak is really coming from? I would suspect your leak is more likely to be coming from where coolant passes from the head to the intake manifold. The coolant port isn't the same shape or in the same location. But it's in the general area of the hard coolant pipe-to-thermostat housing where you say your leaking, so I would take a look at that area.

Also, what IM gasket are you using? Did you use a new stock F22B1 gasket, reuse the stock F22B1 gasket that was on the motor, or a new H23A1 gasket?

I haven't done this but I did start to on my F22B1. I didn't actually mount it or modify the IM but I have looked at the H23A1 IM gasket on the F22B1 head so I do know what your looking at.

Take a look at the link in the FAQ that takes you to a thread on AccordinglyDone. I do believe the posted of that thread later states that he feels his leaking problems were coming from the head-to-intake manifold coolant passage rather than the hard pipe like he originally though.

Edit:
also, next time, make a better thread title.

 

i used the original gasket and ya it is the coolant passage becasue that part fell off so i have to replace it and yes it was the coolant hard pipe because i saw it come out. so ya i know where its coming out so i know what to replace but im just wondering what i have to do to make the h23 im work

 

wait, what part fell off? The coolant passage isn't something that can fall off. It's just a port that sends coolant from the head to the IM.

I'm not doughting your problem with the hard pipe but...

If your using the old gasket I dought your getting a good seal. And have you looked at the F22B1 gasket on the H23A1 IM or the H23A1 IM gasket on the F22B1 head?

Take a look at the thread thats linked in the FAQ. There's a lot of discussion in that thread on how to make it work.

 

the ring on the gasket fell off when we were putting the im back on. so im going to pick up a new gasket and hard pipe today, im going to compare the h23 and f22 gaskets to the h23 im and the f22 head to see what needs to be done and which one will fit.
i read through that post and i saw them talking about using radiator hose to reroute the hard pipe. i think that would be a good way of doing it. im thinking of cutting the messed up hard pipe and try to route it with radiator hose because the im hits the hard pipe so it wont bolt up on the passenger side of the head so im thinking of cutting it in half like right by the two hoses that connect to the hard pipe and then connecting a radiator hose to it and running it further towards the firewall and then to the thermo housing. and to make sure it doesn't leak im going to wrap the connections and the hose with metal duct tape because its very strong and won't melt and wrap the connection from the hard pipe to the thermo housing. what do you think about that idea?

 

I don't know about the metal duct tape part of it.

You could either cut the bent pipe and just remove a section then gap the removed pipe with radiator hose leaving everything in it's place so it wouldn't even look different. But keep in mind, if you cut your pipe and add hose in any way, you'll need to figure out a way to hold the pipe secure into the thermo housing.

Or you could cut a F22Bx hard pipe in half and F22Ax/H23A1 hard pipe in half and weld the two together making a custom hard pipe that fits your block and IM setup.

 

ya.that what i was thinking about using the tape. i dont really care if it looks good just as long as it works. i dont want to glue it together because i have glue thats used for metal, but im going to put a h23 head on my car in like 2 months so if i do that i wouldn't be able to get the hard pipe out of the thermostat if i need to get a different one to fit the new head.

o and by the way, do you know where i can find out where all the sensors from my harness connect to the sensors on the im? should i just get a manaual for a prelude?

 

if your going to be putting a H23 head on soon then you might as well get a manual for a Prelude as well. It'll most likely come in handy.

 

ya. well the im gasket wont come in till wednesday. i put the h23 manifold on and i got all the vacuum hoses and sensors and coolant lines except one line. i dont know what to do with the coolant passage right under the tb and towards the front of the car, ill take a picture tomorow so i dont know what to do. also will i throw a code if i dont put a sensor on the egr valve because that sensor is different than the f22 one.

 

i heard that there might be a coolant leak from the passage on the head becuase the h23 and f22bx are different, the f22bx is oval and h23 is round. can i seal it with silicone so it wont leak also when i put one of the piece of hard pipe into the thermo housing, can i use silicone to seal it up so it wont leak and move?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94accord760 &raquo;</TD></TR><TR><TD CLASS="quote">i heard that there might be a coolant leak from the passage on the head becuase the h23 and f22bx are different, the f22bx is oval and h23 is round.</TD></TR></TABLE>

Thats exactly what I've been saying

I don't know if silicone will work or not. I wouldn't think silicone would be able to hold against vibrations and that to hold the hard pipe into the thermo housing. Me personally, I was going to cut the F22B1 and H23A1 hard pipes and have them welded back together to fit correctly. I have a H23A1 hard pipe for sale if you want to try that, it's posted with my other FS stuff on the 6th page of the FS/WTB stick.

There is a member who started a project on putting a H23A1 IM on a F22B1 head and I believe he had material added to the head and made the port round to match the port on the IM. I believe he also had or was having material added around the intake ports on the head to match the ports as well. I'll see if I can find his thread.

Edit:
Here is that thread I was talking about, it should be of some help.
**How To** Install H23 Intake Manifold onto F22B1

 

when I did my h23 headswap on f22b1, I had no problems, just mistakes on my part. All I had to do was bend the hard pipe a smidge and everything else bolted up fine. It did leak, so I pulled the thermostat housing (since it was leaking there just a small bit) and noticed I forgot to put the gasket on that goes around the hard pipe.

 

im not doing the full head swap im only doing the im swap

 

alright so i got the h23 im on the f22 head and all the sensors and vacuum lines and coolant lines hooked up except for the egr sensor. i try to turn my car on and it wont start. could it be my coil because it fell on the ground like 3 times while trying to do everything?could it be because of the egr valve doesn't have a sensor hooked up or could it be because the ground wire on back of the im isn't on?