Greddy RS diaphragm rant - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jspaeth · 09-07-2008, 11:50 AM

God damn I am pissed.

Haven't driven my car for a month, since I was on vacation in Italy, and I drove it today for the first time in a month.....glad to be back.

I popped the hood while it was idling, and my BOV sounds like a 75-year-old chain smoker with emphysema.

The diaphragm on the BOV continues to get "wrinkled" and causes it to stick open, making me hate my life.

I am gonna call Greddy or write them an email to see if I can get them to show some pity and send me a free diaphragm or at least give me a big discount.....they fucking charge $75 for a new one, and all it is is a piece of fucking rubber.

/gheyness

louisdaboois · 09-07-2008, 11:54 AM

i'd punch them right in the shroat w/ aw i got. but that sucks man, hopefully they'll hook you up with one.

btw italy is bomb, hope you have fun.

Sileighty_85 · 09-07-2008, 02:22 PM

Tell them to send you a Type-R

punkrico · 09-07-2008, 02:50 PM

kick them in the baby maker and make them give you that sh*t

jspaeth · 09-07-2008, 02:57 PM

Quote:

Originally Posted by Sileighty_85

Tell them to send you a Type-R

Ya I know right.

I found a new type-R online for like $160 (on clearance) at vivid-racing, but they fucked up my order, and by the time it got worked out, the 2 they had left were gone.

fuckasses

SammyGreen · 09-07-2008, 03:08 PM

That sucks man, my friends RS actually blew up a few days ago.... literally blew up damn GReddy haha

myreds14 · 09-07-2008, 03:09 PM

Seriously, I hate my RS!

Dousan_PG · 09-07-2008, 07:29 PM

sold mine ages ago
got a greddy TYPE R now
wayyy better

*burnsauto* · 09-07-2008, 07:37 PM

does the type-r need a certain boost level to open like some of the other "racing type" bov's?

300zxdude · 09-07-2008, 07:51 PM

I love my HKS!!!!

ZX88 · 09-07-2008, 08:00 PM

ive got the rs i hope i dont run into issues.

jspaeth · 09-07-2008, 08:45 PM

Quote:

Originally Posted by Dousan_PG

sold mine ages ago
got a greddy TYPE R now
wayyy better

Yeah, i am gonna.

I like the bov, but like i said, after only like a few months, the diaphragm seemed to start to get "kinked", and rather than smoothly unfolding as the plunger moves in and out, it kind of folds on itself and causes the plunger not to close all the way.

Under high boost, i think the pressure keeps it closed okay, but under half throttle blips and idle, i am sure i am losing some air.....this pisses me off too, bc if it's not closing all the way under boost, then my turbo is getting it's ass kicked bc it's having to work harder to reach the desired boost that the AVC-R tells it to reach/hold.

totally and utterly bullshit

Also annoys me bc everything else greddy i own is good quality :/

jspaeth · 09-07-2008, 08:47 PM

Quote:

Originally Posted by burnsauto

does the type-r need a certain boost level to open like some of the other "racing type" bov's?

Not that I know of, you can buy different stiffness springs I believe (as an option when you buy it) and on top of that, you can adjust it with the screw, so I think it's not an issue.

It's always a trade-off....because a BOV is spring-controlled, it DOESN'T act like an on/off switch, so it's always a compromise between how much surge are you willing to handle and how easily do you want it to open if you lay off the throttle a bit

Rittmeister · 09-07-2008, 08:59 PM

This is what sent me to Forge. Metal piston > rubber diaphragm, AND you don't have to bother with adjusting it, it just works.

jspaeth · 09-08-2008, 08:44 AM

Quote:

Originally Posted by Rittmeister

This is what sent me to Forge. Metal piston > rubber diaphragm, AND you don't have to bother with adjusting it, it just works.

The Greddy RS also uses metal piston and rubber diaphragm lol....

Are you implying that the Forge one doesn't?....i just kind of confused by which one your post was referring to man

LongGrain · 09-08-2008, 08:59 AM

i have a greddy type-s and have no complaints

SoSideways · 09-08-2008, 09:18 AM

The Greddy Type-R opens just as easily for even T25 powered SRs if you leave the spring totally soft.

It'll open at around like 3inHg if you have it soft enough.

I've adjusted mine to not open under light load, only opens when there's like 5psi of boost.

It's awesome.

It goes KA-CHIIIIIIIIIIIIIIIIIIING!!! at like 10psi on the T25.

xplicit240 · 09-08-2008, 09:28 AM

type S is godly. thats why lolz. but type R is the way to go.

*burnsauto* · 09-08-2008, 09:38 AM

I think once my RS kicks the bucket.. I'll either go Tial or type R.

If I liked the sound of crying babies being kicked down a hill...I'd buy an HKS SSQ.

jspaeth · 09-08-2008, 10:30 AM

Quote:

Originally Posted by burnsauto

I think once my RS kicks the bucket.. I'll either go Tial or type R.

If I liked the sound of crying babies being kicked down a hill...I'd buy an HKS SSQ.

hahahahahahahaha

clark · 09-08-2008, 10:52 AM

the same thing happens to me on the stock valve which is probably rotten and crusty lol. on half throttle blips it stays open, i can just tell, so i lay off the throttle, then floor it, THEN it shuts. fuck, i'm gonna just get a type-R. you guys seem pretty happy with them. i had a turboXS on a 1.8T vdub i used ot have, that was all metal as well, no rubber, and adjustable with washers.

jspaeth · 09-08-2008, 11:03 AM

Yeah I have opened the BOV about 147 times to inspect it and it's not crusty, it just looks like the rubber has a permenant ridges in it that prevent it from smoothly unfolding as the piston opens and shuts.

And I know EXACTLY what you mean about the half throttle blips and it is open

:/

SoSideways · 09-08-2008, 12:24 PM

Are you guys running dedicated vacuum lines from the manifold to the BOV itself?

Because if you're not, that could be the problem...

But yes, GReddy Type-R is the hot shit. I've had mine for 5 years now, NO PROBLEMS!!

Also got the new version of the HKS SQV (gift to me), so I might switch between the 2 of these and see which one I like better, or just switch them out every month lol

jspaeth · 09-08-2008, 12:53 PM

Not fully dedicated, but I don't believe that's the problem.....like I said, I open the bov, and can physically see where the crimped rubber is preventing the plunger from closing all the way.

When I install my new IM (greddy), I will make use of the extra vacuum ports.

Rittmeister · 09-08-2008, 01:11 PM

Quote:

Originally Posted by jspaeth

The Greddy RS also uses metal piston and rubber diaphragm lol....

Are you implying that the Forge one doesn't?....i just kind of confused by which one your post was referring to man

The Forge/Bosch design does not use a rubber diaphragm. There's a metal piston inside, and a rubber o-ring for sealing. The Forge is usually metal, the Bosch units are plastic (I believe).

I never had an RS, just a Type-S, and that stupid rubber diaphragm caused me some issues too, which is why I switched.

SleepR 240sx · 09-08-2008, 01:14 PM

I run my RS directly off the TB and haven't had any issues so far. Maybe I just got a good one though.

xplicit240 · 09-08-2008, 01:15 PM

oh if your bov is staying open. try taking out the smaller spring inside. fixed my problem.

09-07-2008, 11:50 AM	#1
jspaeth Nissanaholic! Join Date: Mar 2006 Location: Philadelphia suburbs Age: 37 Posts: 2,347 Trader Rating: (7) Rides Gallery: jspaeth Feedback Score: 7 reviews	Greddy RS diaphragm rant God damn I am pissed. Haven't driven my car for a month, since I was on vacation in Italy, and I drove it today for the first time in a month.....glad to be back. I popped the hood while it was idling, and my BOV sounds like a 75-year-old chain smoker with emphysema. The diaphragm on the BOV continues to get "wrinkled" and causes it to stick open, making me hate my life. I am gonna call Greddy or write them an email to see if I can get them to show some pity and send me a free diaphragm or at least give me a big discount.....they fucking charge $75 for a new one, and all it is is a piece of fucking rubber. /gheyness __________________ Daily driven Last edited by jspaeth; 09-07-2008 at 08:45 PM..

09-07-2008, 11:54 AM	#2
louisdaboois Zilvia Addict Join Date: Dec 2006 Location: LA, CA Age: 32 Posts: 851 Trader Rating: (28) Feedback Score: 28 reviews	i'd punch them right in the shroat w/ aw i got. but that sucks man, hopefully they'll hook you up with one. btw italy is bomb, hope you have fun. __________________

09-07-2008, 02:22 PM	#3
Sileighty_85 Post Whore! Join Date: Dec 2006 Location: Misawa, Japan Posts: 6,815 Trader Rating: (8) Feedback Score: 8 reviews	Tell them to send you a Type-R __________________ 後輪駆動車１番 1989 Built SR GT2871R -363whp 1998 S14 W/RB25- 250ish (For Now) 1986 SR86 - 200ish 1990 R32 GTR - 320hp Don't Buy Engines from JDM-Online http://zilvia.net/f/businesses/207457-jdm-online.html Don't Buy XS-Power or SSAC Shit

09-07-2008, 03:09 PM	#7
myreds14 Leaky Injector Join Date: Sep 2007 Location: San Diego Age: 40 Posts: 144 Trader Rating: (3) Feedback Score: 3 reviews	Seriously, I hate my RS! __________________ 1995 240sx KA-T 50k Original miles. For sale?

09-07-2008, 07:29 PM	#8
Dousan_PG Post Whore! Join Date: May 2002 Location: Orange County, California Age: 42 Posts: 16,640 Trader Rating: (23) Rides Gallery: Dousan_PG Feedback Score: 23 reviews	sold mine ages ago got a greddy TYPE R now wayyy better __________________ Aaron Pink GodziRa www.geocities.com/pink_godzira

09-07-2008, 02:50 PM	#4
punkrico Leaky Injector Join Date: Apr 2006 Location: memphis Posts: 126 Trader Rating: (3) Feedback Score: 3 reviews	kick them in the baby maker and make them give you that sh*t

09-07-2008, 03:08 PM	#6
SammyGreen Zilvia Member Join Date: Oct 2007 Location: Appleton Wisconsin Age: 33 Posts: 152 Trader Rating: (9) Feedback Score: 9 reviews	That sucks man, my friends RS actually blew up a few days ago.... literally blew up damn GReddy haha

09-07-2008, 07:37 PM	#9
burnsauto Premium Member Join Date: Dec 2006 Location: 717, PA Age: 35 Posts: 3,156 Trader Rating: (5) Rides Gallery: burnsauto Feedback Score: 5 reviews	does the type-r need a certain boost level to open like some of the other "racing type" bov's? __________________

09-07-2008, 07:51 PM	#10
300zxdude Join Date: Aug 2008 Location: Florida Posts: 42 Trader Rating: (0) Feedback Score: 0 reviews	I love my HKS!!!!

09-07-2008, 08:00 PM	#11
ZX88 Post Whore! Join Date: Oct 2005 Location: ATX Age: 32 Posts: 2,946 Trader Rating: (8) Feedback Score: 8 reviews	ive got the rs i hope i dont run into issues.

09-07-2008, 08:59 PM	#14
Rittmeister Zilvia FREAK! Join Date: Jan 2003 Location: Cincinnati OH Age: 44 Posts: 1,033 Trader Rating: (9) Feedback Score: 9 reviews	This is what sent me to Forge. Metal piston > rubber diaphragm, AND you don't have to bother with adjusting it, it just works. __________________ E36 M3 - new project 1990 240SR - screamed down the road

09-08-2008, 08:59 AM	#16
LongGrain Post Whore! Join Date: Sep 2006 Location: Midwest Posts: 2,741 Trader Rating: (5) Feedback Score: 5 reviews	i have a greddy type-s and have no complaints

09-08-2008, 09:18 AM	#17
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	The Greddy Type-R opens just as easily for even T25 powered SRs if you leave the spring totally soft. It'll open at around like 3inHg if you have it soft enough. I've adjusted mine to not open under light load, only opens when there's like 5psi of boost. It's awesome. It goes KA-CHIIIIIIIIIIIIIIIIIIING!!! at like 10psi on the T25.

09-08-2008, 09:28 AM	#18
xplicit240 Zilvia Addict Join Date: Oct 2005 Location: Weird NJ! Age: 36 Posts: 723 Trader Rating: (0) Feedback Score: 0 reviews	type S is godly. thats why lolz. but type R is the way to go. __________________

09-08-2008, 09:38 AM	#19
burnsauto Premium Member Join Date: Dec 2006 Location: 717, PA Age: 35 Posts: 3,156 Trader Rating: (5) Rides Gallery: burnsauto Feedback Score: 5 reviews	I think once my RS kicks the bucket.. I'll either go Tial or type R. If I liked the sound of crying babies being kicked down a hill...I'd buy an HKS SSQ. __________________

09-08-2008, 10:52 AM	#21
clark Zilvia FREAK! Join Date: Mar 2008 Location: new york Posts: 1,035 Trader Rating: (1) Feedback Score: 1 reviews	the same thing happens to me on the stock valve which is probably rotten and crusty lol. on half throttle blips it stays open, i can just tell, so i lay off the throttle, then floor it, THEN it shuts. fuck, i'm gonna just get a type-R. you guys seem pretty happy with them. i had a turboXS on a 1.8T vdub i used ot have, that was all metal as well, no rubber, and adjustable with washers.

09-08-2008, 11:03 AM	#22
jspaeth Nissanaholic! Join Date: Mar 2006 Location: Philadelphia suburbs Age: 37 Posts: 2,347 Trader Rating: (7) Rides Gallery: jspaeth Feedback Score: 7 reviews	Yeah I have opened the BOV about 147 times to inspect it and it's not crusty, it just looks like the rubber has a permenant ridges in it that prevent it from smoothly unfolding as the piston opens and shuts. And I know EXACTLY what you mean about the half throttle blips and it is open :/ __________________ Daily driven

09-08-2008, 12:24 PM	#23
SoSideways Post Whore! Join Date: Apr 2003 Location: 你老母 Posts: 4,371 Trader Rating: (4) Feedback Score: 4 reviews	Are you guys running dedicated vacuum lines from the manifold to the BOV itself? Because if you're not, that could be the problem... But yes, GReddy Type-R is the hot shit. I've had mine for 5 years now, NO PROBLEMS!! Also got the new version of the HKS SQV (gift to me), so I might switch between the 2 of these and see which one I like better, or just switch them out every month lol

09-08-2008, 12:53 PM	#24
jspaeth Nissanaholic! Join Date: Mar 2006 Location: Philadelphia suburbs Age: 37 Posts: 2,347 Trader Rating: (7) Rides Gallery: jspaeth Feedback Score: 7 reviews	Not fully dedicated, but I don't believe that's the problem.....like I said, I open the bov, and can physically see where the crimped rubber is preventing the plunger from closing all the way. When I install my new IM (greddy), I will make use of the extra vacuum ports. __________________ Daily driven

09-08-2008, 01:15 PM	#27
xplicit240 Zilvia Addict Join Date: Oct 2005 Location: Weird NJ! Age: 36 Posts: 723 Trader Rating: (0) Feedback Score: 0 reviews	oh if your bov is staying open. try taking out the smaller spring inside. fixed my problem. __________________

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