Air boost valve block-off

[19dabeast85]

Is it the whole plenum with TB? I'll take buy the rest of the plenum if you have to get it.

No, just a bare plenum with no sensors, TB or anything but the plate: linky

Appreciate it though

[HondaFan81]

Make your own, no products out there to my knowledge.

There is one benefit to blocking off this valve and it is if you have an aggressive enough camshaft that this valve in stock form can cause a vacuum leak. You have to block off this valve on more aggressive cams to have more consistent idle and be able to set it accordingly.

[19dabeast85]

Well until I find a block-off plate or make one, this should do! I had an extra boost valve laying around and found some 3/8" x 24 plugs hidden in my tool box and......

Threaded in very snugly with blue RTV on the threads to seal and lock them! It's raining and nasty today but I'll get it installed soon.

[keycb7]

Great idea^^^what if you cut/grind the excess and just leave plate, and plugs would from inside.

[wed3k]

Great idea^^^what if you cut/grind the excess and just leave plate, and plugs would from inside.

that would require too much time and effort.

[19dabeast85]

Great idea^^^what if you cut/grind the excess and just leave plate, and plugs would from inside.

I thought about that but as wed3k said, it would take alot of time, AND these plugs already stick beyond where the cutoff would be so it'd look funky.

[bjaccord]

I tig welded mine up, then sanded it smooth, along with the bolt holes. Looks great. Almost any fab shop should be able to do it for less than 25 bux.

[HondaFan81]

Blocking off the air-starting valve will not make a significant difference in start ups, I know first-hand. It is beneficial to block it off somehow, as it will be the cause for a vacuum leak if you get any aggressive enough aftermarket camshaft. This will result in an inconsistent idle/surging. Less headaches in future, when setting idle with an aftermarket camshaft.

[92bently]

i can make u a plate if u want....wont be aluminum, but will serve its purpose...i am buying a jdm h23 manifold saturday, and i am assuming itl be on there...i can pull it off and cut u one out....lmk man

[steelbluesleepR]

i made one, along with an egr block off plate, and 2 other ones, but i have no clue what they are called! one is under the h23 throttle body, and one replaces the big thing to the left of the air boost. i will probably find out pretty soon if my engine will run with it blocked, i am putting it all back together tonight. anyway, here's a picture:

[C91BLX7]

I would still run the IACV, engine won't run right and the ECU will throw a CEL

[steelbluesleepR]

I would still run the IACV, engine won't run right and the ECU will throw a CEL

what does the IACV do? it looks like it jsut has coolant lines running in and out of it with some kind of solenoid or sensor?

[C91BLX7]

what does the IACV do? it looks like it jsut has coolant lines running in and out of it with some kind of solenoid or sensor?

It controls your idle.

[slick]

i made one, along with an egr block off plate, and 2 other ones, but i have no clue what they are called! one is under the h23 throttle body, and one replaces the big thing to the left of the air boost. i will probably find out pretty soon if my engine will run with it blocked, i am putting it all back together tonight. anyway, here's a picture:

looks really good wanna make me a set?

[wed3k]

that looks cool, i like the two tone.