How do you hook up the GReddy S-Type Bov

[OneSickTSi]

I just recently pulled out my motor cause it went bad, and rebuilt it, but kinda forgot some things, i was just wondering what the little nipple on the greddy type-s bov went to, i know the large one goes to the intake manifold, but where does the tiny one go?

 

[rubbersidedown]

you can rebuild a motor but you can't put a bov on?

 

[Honda_Killn_GST]

On mine I just left it open... RRE or somewheres install guide saids it.

 

[turbolaserAWDrs]

i had a type-s on mine too and just left the bottom one open too..it was fine for me.

 

[ctnsupra1]

The smaller nipple, which is actually under the larger one, goes to the underside of the diaphragm. You connect the lower nipple to the nipple on the compressor housing of the turbo (like on the T-25). However, the TD05 housings do not have one so it can't be done (on a 2G, 1G's I'm not sure about). The purpose of the lower nipple is too increase BOV response by having air on both sides of the diaphram. It also gives it a higher, sharper sound.

 

[OneSickTSi]

Originally posted by ctnsupra1
The smaller nipple, which is actually under the larger one, goes to the underside of the diaphragm. You connect the lower nipple to the nipple on the compressor housing of the turbo (like on the T-25). However, the TD05 housings do not have one so it can't be done (on a 2G, 1G's I'm not sure about). The purpose of the lower nipple is too increase BOV response by having air on both sides of the diaphram. It also gives it a higher, sharper sound.

so the smaller nipple attaches to the nipple on the turbo elbow? and does the waste gate actuator attach to the air cleaner can?

 

[vertGST]

I like the drawing :laugh:

Brendon

 

[ctnsupra1]

Here's a link from the VFAQ's Type S BOV install

If you look next to the final picture, it gives instructions on where to splice into the correct line. Hope that helps, take care.

Conor

 

[PimpBlackTalon]

Quoted from the GReddy website FAQ section (take special note on the parts that I bold and underlined.) BTW.. that VFAQ site that showed the 1/2-A$$ed setup of the Type-S using the wrong (1st Gen BOV) flange and the lower NIPPLE connected to boost.. one word.. WRONG! I love this thread because I get to say NIPPLE.. NIPPLE NIPPLE NIPPLE!

http://www.greddy.com/technical/

"How do I set the adjustment? The top nipple on the top section will connect to the intake manifold (behind the throttlebody, so it reads both vacuum and pressure. Make sure it does not get bled off to anything) while the lower fitting is a vent for the internal diaphragm. The lower nipple should be left open and not be connected to anything. Make sure when you adjust the stiffness of the valve that you first loosen the lock nut before you adjust the setscrew. Adjustment will very from car to car, so you will need to use trial and error to find a good setting. Generally you want to valve as tight as possible, without getting any compressor surge. (Compressor surge will sound like a stutter.)m You don't want it too loose or it can open too early and you will loose boost. The valve should make one clean blowing sound, it should not stutter. It should also not open before the throttle is shut. "

.. Still from the GReddy site..

"What is the lower nipple for? The lower fitting is a vent for the internal diaphragm. The lower nipple should be left open and not be connected to anything. Do not plug up this opening. "


:laugh:
Peace

 

[ctnsupra1]

Here's the DSMTalk link with the anatomy of a BOV. The cutaway is specifically of the Greddy Type S. The second and third large pictures show the flow of air into the BOV. While I'm not arguing that Greddy knows what they are talking about, isn't an internal vent for the diphragm the actually part that connects to the intake snorkel that releases the pressure? Why would they have a openeing less then the size of a pencil to vent? Just look at the diagram from DSMTalk, it shows the correct intake/airflow of the BOV.

 

[PimpBlackTalon]

WELL that is a beautiful drawing of the Type-S on that page... LOVE the colors!! Too bad they still don't get the picture.. (excuse the pun)

Quoted from the DSMTalk link/page: "I'm no bov expert, so if you have additional insights that I have overlooked here, please respond." (Don't worry I reponded)

The lower nipple doesn't have anything to do with venting the charged air from the turbo.. It simply vents the "internal diaphragm" as stated on the GReddy technical support page. In other words the lower nipple doesn't vent the charged intake air, it vents the sealed internal chamber in the BOV that the intake air never sees! NO WONDER the guy who wrote that post and drew those lovely pictures had problems with the seals on his Type S! (THAT's why GReddy is so emphatic about making sure that nothing is connected or blocking the airflow of the nipple?!)

For once I agree with an ad campaign.. "TRUST GReddy" WELL at least trust the part of the technical support page that I quoted! Anyway, it wouldn't make sense to supply pressure to that nipple.. If the nipple is supposed to vent the diaphragm in the BOV, supplying pressure is not only defeating the purpose of the nipple but also adding to the problematic pressure it's supposed to be venting!!


Peace

 

[LTUSPE]

for what it's worth, I tried mine both ways. With the lower nipple to atmosphere, my car bucked like hell and gave that horrible studdering sound when I let off the gas.....NO MATTER HOW I ADJUSTED IT!!!...so don't start With the lower nipple routed to the comp. nipple on the turbo, the BOV worked much smoother and no studdering. Besides, I don't like loosing metered air

Try it both ways and see what works best for your setup...

Just my .02

Peace,

J.
'99 GSX

 

[SPEEDY]

I left the lower nipple open on my Type-S, and my car runs fine. Mostly everyone that I have talked with say leave it open.

 

[cfusionpm]

i was checkin around on ebay for a type S and i stumbled onto this: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2404781403&category=26439
now, do i really need this, or is the guy ripping me off? is it easy to install without it? it appears that the stock bov is connected to a verticle tube and doesnt have the normal flange as on the bottom of the greddy. it *looks* like i do need this to mount the round end in the existing tube and bolt the bov to the opposite end. am i correct? sorry, but i the only thing ive done to my car is put on a new intake filter, and am not that knowledgable yet about some of the more complicated stuff. any help is welcome

 

[PimpBlackTalon]

Originally posted by cfusionpm
i was checkin around on ebay for a type S and i stumbled onto this: http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=2404781403&category=26439
now, do i really need this, or is the guy ripping me off? is it easy to install without it?

You can't install the type-s on a 2g without the adapter flange. Off the top of my head the only other place I could tell you that sells them is www.extrememotorsports.com . I used one for a while and it worked fine. Extreme wants $30 + s/h..

.. from http://www.extrememotorsports.com/g2cat/icpipe.htm
"Adapter flange for the GReddy Type-S BOV [EXM0283] $30.00
Mating flange that interfaces the GReddy Type-S valve to the stock second generation intercooler pipe. "

Peace

 

[cfusionpm]

and its easy to install right? just bolt it in and clamp all the hoses on?

 

[PimpBlackTalon]

Originally posted by cfusionpm
and its easy to install right? just bolt it in and clamp all the hoses on?

It couldn't be easier.

 

[SPEEDY]

I would actually wait and get some type of aftermarket UICP before mounting it. You can get one with the GReddy flange for $98 bucks from RRE.