Hi guyz, can anyone tell me how exactly do you install the RB ACV block off plate? I removed my airpump this afternoon but I didn't put the plate yet 'coz i was in a hurry to go somewhere so I just blocked the rubber pipe w/ something and left.. So far the car's running fine and picks up speed quicker and revs a bit lighter than it used to. Anywayz, instructions of how to or links would be just fine.. Thanks!

 

Take off the Air control valve. Clean the gasket off the block. Put a new gasket on the block off plate, and screw/bolt it on.
Is your car is turbo, you may need to add a vacuum nipple to connect to the boost sensor.
Cap all the disconnected vacuum lines.
Sean

 

I do have an '88 TII and I have no idea how to add a vacuum nipple! I'm just starting to get to know my FC so bare w/ me.. Wait, do I really need such nipple? I never heard about it before or maybe someone just forgot to mention it to me.. Anywayz, I'll keep searching for more info unless you don't mind giving 'em to me.. Thanks!

 

You wont need to add a nipple. You will, however, need to remove the studs and replace them with short bolts. That is, unless you feel like gashing your hands open on exposed thread whenever you work in that area...

 

I guess my question really is do I need to take the whole ACV to use the block plate or just use it to block the hole after removing the vacuum hose that goes to the ACV? I know, I'm confused..

 

Like Sean said, take ACV off, bolt plate on. Cake walk.
You don't need to add a vac nipple for the boost sensor, just tee off the vac line to the BOV.

 

Here's a pic of my car that might help. Note the ACV and split air block-off plates, the 3 capped vac lines and the tee in the BOV vac line to feed the pressure sensor. Hope this helps.

 

thanks guys.. I think I have a little bit more idea now how to do it.. The picture helped a lot too NZ! I guess I was just overwhelmed when I saw how tight the space was the first time I looked at it.. Oh well, nothing I can do for now anywayz 'coz it's freezing outside..

Any more help would be appreciated!!

 

I removed my air pump, but i didn't touch anything else, I just put small filter and hooked it up to the hose where air pump was hooked up to. Do i even need to take that ACV at all? my car is runing fine without just ari pump and i haven't had any problems.

 

Same thing here.. That's why I'm asking all these questions w/c I'm sure they're bugging everyone.. Anywayz, that's what I did too.. I just plugged the hose that was hooked up to the airpump.. So far the car's running fine.. If no problem will emerge, I just might leave it like that 'til warmer weather gets here.. What do you think guyz??

 

If you still have cats on your car you NEED to leave the ACV on. It is still helping supply a little air to the cats. Without it, they will overheat.

 

Not without the air pump it's not. If the pump comes off, the ACV is useless and the cat must be removed for the reason you mention (or replaced with one that does require an air feed).

 

i looked at that pic and it took me a second to see that is a right hand drive,,,there is probably more room on lefties cause there is no master cylinder

 

Go find a completely stock car. Take the airpump off and leave the ACV on. $5 says the cats don't turn red. Now pull the ACV off. $5 more says the cats start glowing within 10 minutes. Its happened to me twice before.

 

 

are their any performance gains to taking off the air pump and ACV??
just a quick question

 

The air to the cat comes from the pump, AFAIK there's nowhere else it can get air from. I ran my car with the pump and ACV removed and the cat in place for 2 months and it never turned red.
My understanding was the split air was primarily to supply extra oxygen to assist the chemical reactions taking place in the cat. The volume of air is tiny compared to the exhaust gas so I don't think it would do much cooling.

 

Only minimal if any. The air pump probably only draws 1-2hp. It's more about a tidier engine bay. The main reason I took all mine off was because I suspected a stumbling at high rpm was caused by a faulty ACV (it was), and I was taking the cat off eventually anyway. The pump's quite heavy too.

 

i'm just not used to seeing the brake master cylinder on that side

 

How do ya think I feel?!

 

This was my understanding of how the system worked too. The only air i see getting to the cat without the Airpump hooked to the ACV would be air sucked in by the ACV or something...