Greddy type R bov Q

[bloodangels13]

I've spent alot of time searching here and other places with no avail sooo...

Anyone have a vacumm route diagram for the Greddy Type R bov or tell me what nipple goes to where?

i connected it up guessing the top nipple goes to the hotpipe and lower to the intake mani.. it works but leaks enough boost to keep the car from reving past 4k. I just ordered an adaptor so i can recir. It currently has a stiff spring in it also.

[Z33dori]

if u don't mind me asking. what does the type r sound like? i can never find a video of it. and all the ones i find everyone tells me that is compressor surging.

[corriganjoshua]

Originally Posted by Z33dori

if u don't mind me asking. what does the type r sound like? i can never find a video of it. and all the ones i find everyone tells me that is compressor surging.

Go to www.youtube.com and type in greddy rs you will see and hear a lot. It almost sounds like water splashing when you hit a puddle haha.

[JVD]

Originally Posted by corriganjoshua

Go to www.youtube.com and type in greddy rs you will see and hear a lot.

Greddy Type R... not RS

RS is lame

R is baller

[Z33dori]

Originally Posted by JVD

Greddy Type R... not RS

RS is lame

R is baller

+2 def not the same in any way. i dis like the RS almost as much as i hate the type S

[bloodangels13]

PLEASE PPL KEEP IT ON POINT! on angelfire there is a good vid of a supra with a type R... now answer my questions dammit!

[devonkyle77]

help this guy out!

[Z33dori]

well if its anything like the type S, then most ppl just hook up the upper ( usually bigger) line to the throttle body, then run the second line open, or running off the waste gate(i think).

[Sileighty_85]

Run one line from here
(Leave the Back one unplugged)


Straight to here No other T's
Big nipple on top right of the Throttle Body

Originally Posted by Z33dori

if u don't mind me asking. what does the type r sound like? i can never find a video of it. and all the ones i find everyone tells me that is compressor surging.

Makes a quick "WISH" Sound depnding on boost pressure
Its Pretty Quiet though most of the time
you can hear it alittle bit in my clip on low boost

[projekt_s13]

What i thought it sounded like compressor surge like this video.

[ame]http://video.google.com/videoplay?docid=7250883200762222735[/ame]

[Sileighty_85]

Originally Posted by projekt_s13

What i thought it sounded like compressor surge like this video.

It depends on the size of the turbo, boost pressure, and Spring tension. Im sure that Supra's running like a T-67 or somthing around that size

My video is what it sounds like on a T-28 @ 8-10psi on Low engine load, Spring setting "soft"

[bloodangels13]

thanks now my question has finally been answered....

[pwhitersxs]

I have the stiff spring Type R bov and it does have compressor surge slightly more than other bov's. It works extremely well and I am really happy with it. I have had it for 4 years or so. I would recommend it.

As far as the noise, depending on how tight or loose I make it by turning it; it can make a deep lower pitch woosh to a higher pitched squeal type of noise. The way I have it now which is turned to the stiffer setting and with the gt2871r, it makes a lower pitch woosh.

[SoSideways]

I have the Type R.

I probably tightened the adjustable screw to like, halfway in. It doesn't open until I hit like 3psi on a low load over 3500rpm in like 3rd gear, on the stock T25.

Now when I hit 10psi and am getting on it, and I let off, it's like a loud "KA-CHIIINNNGGGGGGG", cause that BOV is totally money.

And I'm not saying it is money like it's a line to say, the BOV says it itself. I'm just repeating what it's telling me to you guys.

In like 2 weeks when my car's back up and running, and if I remember to, I'll make a video of it.

[SR2Zero]

....................

[Z33dori]

go kill your self

[Tearlessj]

Anyone know what the rear fitting is for?

[bloodangels13]

im still wondering that too..... i did my vacumm line like sileighty 85 said and it works perfect. No more 4k bog! It still leaks a bit at idle tho. Plus it bogs a bit between gears when i hammer the shit out of it.
hopefull reciring it will fix thoes issues..

I cant wait to hear it go off when i put my t3/t4 setup on in about 2 months

[SoSideways]

The other fitting routes the air to the bottom of the piston, whereas the top nipple routes the air on top of the piston.

Basically, you're supposed to only use the top nipple, to provide the chamber above the piston with both vacuum (for when you let off, to help pull the piston up) and boost pressure (to help the spring push the piston down to help keep it sealed during boost situations).

That design is there to help keep the piston sealed during high boost applications. However, for some people, that causes too much compressor surge before the valve opens, so they incorporated the design with the nipple on the bottom.

You are supposed to hook the bottom nipple to a source that will only see positive pressure, aka boost.

When the both of the nipples are hooked up, what essentially happens is that, the positive pressure from the bottom nipple cancels the positive pressure from the top nipple out, leaving the spring inside the chamber as the only thing pushing down on the piston against the boost pressure within the intercooler piping. This is so that the valve will respond more quickly, but because you've now lost the primary force to push down on the piston from the top to help seal it, it will not hold as much boost pressure.

To be honest, I haven't had any issues with mine for the past like 5 years that I've had my car and setup, which is basically a stock SR with the Greddy Type R, and I've only had the top nipple hooked up.

[bloodangels13]

that exlains it all to me... thanks good sir lol