Performance Forced induction, intakes, exhausts, torque converters, transmissions, etc.

Problems with BOV

Thread Tools
 
Search this Thread
 
Old 11-13-05, 07:59 PM
  #1  
Dx3
Lexus Fanatic
Thread Starter
iTrader: (13)
 
Dx3's Avatar
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 10,681
Received 8 Likes on 7 Posts
Default Problems with BOV

Guys,

My BOV is releasing big time when it shouldn't be - ie. at 3000rpm it is releasing. It is opening and closing, not just opening and dumping. What could be the problem with it?? Faulty installation???

Jonny
Old 11-14-05, 05:44 AM
  #2  
Ronsully
Pole Position
 
Ronsully's Avatar
 
Join Date: Sep 2005
Location: Gayburg, MD
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Dx3
Guys,

My BOV is releasing big time when it shouldn't be - ie. at 3000rpm it is releasing. It is opening and closing, not just opening and dumping. What could be the problem with it?? Faulty installation???

Jonny
Details? What kind of BOV? Where is it located? Have you adjusted the tension or what spring is in it? Does it have its own dedicated vacuum/boost source?
Old 11-14-05, 11:23 AM
  #3  
Dx3
Lexus Fanatic
Thread Starter
iTrader: (13)
 
Dx3's Avatar
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 10,681
Received 8 Likes on 7 Posts
Default

Originally Posted by Ronsully
Details? What kind of BOV? Where is it located? Have you adjusted the tension or what spring is in it? Does it have its own dedicated vacuum/boost source?
Ron,

Excuse my ignorance but I know very little about BOV's. It is an HKS. I don't know whether you need to replace the spring or whether there is something you can just tighten. Yes, it does have it's own vacuum source I believe.

Please help!!!

Thx man,
Jonny
Old 11-14-05, 11:26 AM
  #4  
mikal
Lexus Champion
 
mikal's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 2,183
Likes: 0
Received 1 Like on 1 Post
Default

johnny, if it's the newer HKS SSQV, there's no adjustment screw on there.

Did you mean it goes pst pst pst pst pst instead of pssssssssssht?

How many lbs of boost is it when you release? Mine does the same, when i let the throttle go at about 2lbs of boost, it does that. But when there's alot of pressure to release, it'll dump it out all at once.
Old 11-14-05, 11:59 AM
  #5  
Ronsully
Pole Position
 
Ronsully's Avatar
 
Join Date: Sep 2005
Location: Gayburg, MD
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by mikal
johnny, if it's the newer HKS SSQV, there's no adjustment screw on there.

Did you mean it goes pst pst pst pst pst instead of pssssssssssht?

How many lbs of boost is it when you release? Mine does the same, when i let the throttle go at about 2lbs of boost, it does that. But when there's alot of pressure to release, it'll dump it out all at once.
true true. Are you boosting full throttle and at 3krpm the bov is leaking or are you letting off (even the slightest) on the gas? If you are flooring it and at 3k rpms the bov is cracking open then you have a problem. If you are letting off, the bov is supposed to open. I think the HKS SSQV have a design flaw with the o-rings.

I used to have a greddy bov and it was a POS it leaked like crazy after 1bar of boost.
Old 11-14-05, 12:49 PM
  #6  
Dx3
Lexus Fanatic
Thread Starter
iTrader: (13)
 
Dx3's Avatar
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 10,681
Received 8 Likes on 7 Posts
Default

Guys,

Whenever I am trying to get up to boost levels ( centrifugal sc) at about 3k rpms it starts releasing even though I am at WOT. So MIkal, it is psst pssst psssst pssst

I am hoping it is a vacuum problem cuz I can't afford to do too much more of this!!

Thx guys - any other advice??

jonny
Old 11-14-05, 01:05 PM
  #7  
mikal
Lexus Champion
 
mikal's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 2,183
Likes: 0
Received 1 Like on 1 Post
Default

hmm, it releases when your foot is still on the gas? Maybe it's a defective bov or it's not seated property.

Where does your boost gauge point to while idling?
Old 11-14-05, 01:38 PM
  #8  
jp430
Driver
 
jp430's Avatar
 
Join Date: Jun 2005
Location: CA
Posts: 158
Likes: 0
Received 0 Likes on 0 Posts
Default

Where did you get the BOV??? I just read an artical about immatation parts that are bought online and on ebay. The HKS BOV was one of the featured parts. They tested it and it did not perform well. I have the same BOV with no problems, pushing about 6.5lbs. It could be a fake.


John
Old 11-14-05, 01:50 PM
  #9  
benzo555
Lexus Test Driver
iTrader: (11)
 
benzo555's Avatar
 
Join Date: Nov 2004
Location: Texas
Posts: 1,560
Likes: 0
Received 1 Like on 1 Post
Default

Originally Posted by jp430
Where did you get the BOV??? I just read an artical about immatation parts that are bought online and on ebay. The HKS BOV was one of the featured parts. They tested it and it did not perform well. I have the same BOV with no problems, pushing about 6.5lbs. It could be a fake.


John
Hey John im interested where you saw this article.
Old 11-14-05, 04:56 PM
  #10  
Ronsully
Pole Position
 
Ronsully's Avatar
 
Join Date: Sep 2005
Location: Gayburg, MD
Posts: 305
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by mikal
hmm, it releases when your foot is still on the gas? Maybe it's a defective bov or it's not seated property.

Where does your boost gauge point to while idling?

IMO, ditch the HKS BOV... It is an inferior product to the TIAL BOV. I used to have twin BOVs pushing 30psi and those things leaked.... I then switched to a single Tial and all the problems were solved. Tial is hands down the best.
Old 11-14-05, 05:00 PM
  #11  
morris
Lexus Champion
iTrader: (2)
 
morris's Avatar
 
Join Date: May 2004
Location: Tennesee
Posts: 3,465
Likes: 0
Received 1 Like on 1 Post
Default

I had an email come to me from HKS also about fake parts
Old 11-14-05, 07:13 PM
  #12  
Dx3
Lexus Fanatic
Thread Starter
iTrader: (13)
 
Dx3's Avatar
 
Join Date: Jul 2003
Location: Tulsa, Oklahoma
Posts: 10,681
Received 8 Likes on 7 Posts
Default

Guys,

I think the problem was an install error!!!I don't think he had the vacuum line connected properly so I was just dumping boost as soon as I made it. Hopefully dyno at the end of the week.

Seat of the pants is telling me that it rocks!! Maybe Joe (Sockfocks) can jump in as he rode with me tonight!!

Jonny
Old 11-14-05, 07:16 PM
  #13  
trbopooh
Lead Lap
 
trbopooh's Avatar
 
Join Date: Feb 2001
Location: hell
Posts: 505
Likes: 0
Received 0 Likes on 0 Posts
Default

Congrats. Hopefully your problems will be resolved.
Old 11-15-05, 09:50 AM
  #14  
sockfocks
Lexus Test Driver
iTrader: (1)
 
sockfocks's Avatar
 
Join Date: Sep 2004
Location: Oklahoma
Posts: 833
Likes: 0
Received 7 Likes on 6 Posts
Default

HOLY CRAP BATMAN!! this thing rocks!!!...well I dont think i can take a dump for a few days....but yeah its fixed....hehe EDIT: damnit...i need to win the lottery....i see boost in the future
Old 11-15-05, 02:34 PM
  #15  
mikal
Lexus Champion
 
mikal's Avatar
 
Join Date: Aug 2004
Location: California
Posts: 2,183
Likes: 0
Received 1 Like on 1 Post
Default

Glad you found the problem.


Quick Reply: Problems with BOV



All times are GMT -7. The time now is 03:18 PM.