Need to block off recirculating valve inlet on stock accordian

[figgie]

you don't need to recirculate it, mine isnt, but you DO need to change the way you drive. You need to down shift and engine brake until your RPMs are low enough (around 2500), not to be boosting and clutch in...

Grrrrrrrrr.

92nsx tried to set the record straight nicely, but you tikes don't want to listen! So now the old skoolers have to come in here a curb stomp the ignorance.

Change the way you drive because you are to lazy to do things correctly?

NO!!!

This is the technocal forum. 92nsx gave the how to. I am giving the why.

In short, the TCCS measured the air and as such is injecting fuel for it. Vent the measured fuel to atmosphere and now you create a rich condition. Sometimes enough to stall the motor out.

Of might me working half assed for some but rest assured. It is half assed.

 

[grimreaper]

The bypass valve opens at high vac and allows air through increasing drive ability at low throttle. Adjuster hit on this point ALONG time ago. LEAVE IT ALONE!

I use two Bosch bypass valves. Don't remember the numbers, but they are off a Porsche 996 Turbo IIRC, and they were 30.00 for both.

Here is the key.

They must be installed the right direction.
I see people with them installed wrong all the time, and those same people complain they leak or don't hold boost.

Here is the key. They are designed to open under any vac conditions. If you have them plumbed correctly, this allows air to take a short cut around your turbo, FMIC and all the pipes/hoses. This shortcut improves throttle response at low engine speeds where there is no boost yet.

As soon as pressure exceeds ambiant, the bypass valve closes up, and is held closed by the pressure in the IC pipes. IT CAN NOT OPEN UP UNLESS THE VALVE BREAKS. And that would take pressures beyond what your engine would hold anyway.

The Bosch bypass valve has to be installed with the hose going to your IC pipe off the side of the body, and the hose that goes straight down, to your Accordian/intake hose. (Opposite the vac line fitting.)

It fits better backwards, but it only works right when it's installed the way I just noted.

 

[RazoE]

Change the way you drive because you are to lazy to do things correctly?

Lazy no, when my engine was finished getting swapped I took it for a test drive and it stalled in the parking lot of the shop (kaizen). Jose told me it would stall unless I recirculated it or got a stand alone.
I figured I was fucked, stalled atleast 8 times on the way home, cursing my new engine. Showed my brother in law (who was more excited about my engine swap than me) he asked to drive it. He has an h22a swapped turbo accord and told me all I had to do in the mean time was shift it into a gear as soon as possible and let the rmps drop before I clutched. I also asked him and he told me about a recirculating tip for my hks bov, which I ordered.
HOWEVER I've been to 5 different autoparts stores and even a few homedepots and NONE of them carried 1 inch inner diameter hose to fit. So in the mean time I leanred how to drive it, and realized I don't need the damn hose because I drive it fine the way it is.
I understand the rich conditions that are created once metered air is released, but for those that didn't know what venting bov's will do, can still drive their cars in the mean time while they source new BOVs, recirculating tips, or just lean to drive with their venting BOVs...

/vent -D)

 

[grimreaper]

i think your missing his point

 

[RazoE]

i think your missing his point

if you look at my 1st post in this thread, I told him to recirculate it, and it's done that way for a reason, I understand why it stalls and what can be done to correct it. I also posted an alternative to it.

 

[huntin5L]

92, i just meant that some seem to have trouble while others don't, so i am going to try it. Worst case, I will recirculate it and call it a day. Oh and thanks for the help

 

[huntin5L]

I think the problem I am going to run into is the bov outlet is bigger I THINK then the hole on the accordian pipe. I would have to use a hose and maybe some sort of reducer. Any thoughts?

 

[grimreaper]

mine is a 45 degree elbow off the turbo inlet, 3-4"s of metal tube with all my ports (bypass valve and ISC) on it and another 45degree elbow to the afm. Its a tight fit with the air filter on it.

 

[huntin5L]

Grim can you snap a pic. I actually went to the store and almost found what I was looking for. I found a heater hose which was large on one end and reduced on the other, just a little to small for the accordian pipe inlet. I need to find something with an id of 3/4" on one end and 1 1/4" id on the other.

 

[grimreaper]

sure can give me till after work today

 

[grimreaper]

sorry for the delay, been a bit busy.