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Registered:
May 2002
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 Reward for sharing your thoughts on BOVs !!
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Sun, 23 March 2003 11:23
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Hey Toymodders. Was wondering if you could answer a few questions regarding blow off valves for me. Nothing too technical.
1) I've been told 1ggte's suffer from using atmospheric BOVs as the stock computer goes crazy due to having an AFM that detects a leak in air and fuc*s the reading up.
2) Atmospheric BOV's are defectable now anyway. Right ?
3) Who has a BOV on a 1ggte or similar setup as a 1ggte i.e. with an AFM. What BOV have you used? is it loud ?
4) Which BOV's make that popping/whistly sound ? I like !!
5) What BOV's have you got (on what car) and how much did you get them for?
6) Do I have to get a recirculating (silent) style BOV for my 1ggte ? I really want the popping whistle sound !!!
(ps if you are gonna complain that BOVs are for rice effect, go start your own thread, dont reply to this 
THANKS
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Location:
Wollongong
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 23 March 2003 13:25
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1. If the 1G has an AFM, this is true. The computer expects an air rush, doesn't get it, then stalls due to over-fuelling. Not so with MAP based engines (eg. 1JZ)
2. In NSW, yes.
3. ...
4. Depends... they all make some sort of noise. Best to hear one installed on a similar engine and decide from there.
5. Stock Toyota BOV (recirc.). Came with the car 
6. Recirculating BOV is best for AFM engines. You can get hybrid types which recirc some air, and let some to atmo. See www.gofastbits.com.au for more info.
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 23 March 2003 22:33
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Thanks Soarer !
Any more replies ?!?!?!?!
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Location:
Eskilstuna, Sweden
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 23 March 2003 23:11
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The weird thing about atmospheric BOVs not being road legal has all to do with noise pollution rather than any regards with emissions (it's just mildly compressed air after all). This is not that big a deal when you consider that most road cars are better off with a plumb back BOV as they do not loose all the pressure to the atmos and hence have a better spool time.
But it is a little subjective as there is not that much in it really. Though a full stealth motor is kind of fun - silent but deadly........ 
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Location:
Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 23 March 2003 23:55
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It is emissions which makes atmo-venting BOV's illegal. You say it's just compressed air, but that's not true - it contains oil vapour also.
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Location:
Cabramatta, NSW
Registered:
May 2002
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 Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 00:01
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Get a recirculating one. Otherwise, you will run rich since the air is dump off.
Don't you already have a rice rocket? Keep the rice off the Silly!
Bosch make a good BOV which costs bugger all... Do a search, there's a thread about BOVs going on right now in one of the sections....
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 00:06
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I'm going to get one of those ~$50 Bosch BOV's for the Saab ordered in from Marlows. Considering they are a fairly straight fit for the one on the 7MGTE, then I will be able to use this:
http://www.supras.org.nz/techinfo/phil_strong/ga70 bov.htm
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Location:
Cabramatta, NSW
Registered:
May 2002
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 Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 00:09
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| Norbie wrote on Mon, 24 March 2003 10:55 |
It is emissions which makes atmo-venting BOV's illegal. You say it's just compressed air, but that's not true - it contains oil vapour also.
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Here's one thing I don't agree to. How can it be emmissions if the air has never been inside the engine. Just gone through the air filter and back out.
Stupid RTA.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 00:39
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 the sesquential (spelling?) BOV is the one that whistles. mine does, and everyone always comments on how good/different it sounds to other BOV's....
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 00:52
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Hey Les, if you want noise, don't bother with a atmo BOV, get a screamer pipe! And get one for me too! 
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Toymods Club Treasurer
Location:
Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 01:37
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The air before the turbo does have oil vapour in it due to the crankcase breather (rubber pipe off the head) being plumbed back in (this is done to try to burn excess oil instead of just pumping it straight out), UNLESS you've got an oil catch can that is separate.
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 01:39
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Bugger! Forgot about that! 
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 02:25
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Forgive my ignorance on this one, I have a venting type BOV fitted to my 1G and it sometimes has a low idle speed, could this have something to do with it???
Other than that It doesn't give any problems. The bosh recirculating set up look the trick though.
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Location:
GoldCoast/Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 03:00
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"Reward for sharing your thoughts on BOVs !!"
???? So whats the reward.. why should I waste my time responding if there is no reward??
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Location:
Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 03:11
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The air coming out of the BOV has also been through the turbo, and any turbo with a few km's on it will leak a small amount of oil through the seals.
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 04:14
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| gold28 wrote on Mon, 24 March 2003 13:25 |
Forgive my ignorance on this one, I have a venting type BOV fitted to my 1G and it sometimes has a low idle speed, could this have something to do with it???
Other than that It doesn't give any problems. The bosh recirculating set up look the trick though.
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I don't think it'll have anything to do with your idle. Just make your car run rich when you back off and all the air is vented.
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 05:24
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Apart from runing rich when backing off (which isn't really a problem) is there a good reason why I should remove my vented BOV. Apart from removing the wank factor
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Location:
sunny coast, qld
Registered:
October 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 05:40
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i have a 1g-gte with a GFB type 1 BOV that is straight atmo. ALthough my car is auto so it doesn't blow smoke on gear changes like a manual would. Mine seems to run alright, no stalling or anything like that?
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 06:24
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gold28... 'cause it's illegal?
you can get plumb backs that make good noises... the noise just comes our of the air filter instead of direct vent (helps if you have a pod filter)
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Location:
Southern Sydney
Registered:
August 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 07:25
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yeah when I run high boost levels the factory plumb back BOV will cause used to cause the lid on my air box to pop open....
got onto the clips with some pliers and its a bit tighter now though.
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 09:29
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| Nark wrote on Mon, 24 March 2003 11:52 |
Hey Les, if you want noise, don't bother with a atmo BOV, get a screamer pipe! And get one for me too!
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well if u tell me what the hell a screamer pipe is u turd !!
AND stop riping my ricer rocket u biatch ! HAHAHAHHA
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Location:
Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 09:31
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screamer pipe is short straight pipe which is piped up to the wastegate so when it opens the exhaust has no restriction!
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 09:33
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apparently the noise is amazing... just be sure there are no cops around when that baby opens up
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 09:35
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| bassaholic55 wrote on Mon, 24 March 2003 16:40 |
i have a 1g-gte with a GFB type 1 BOV that is straight atmo. ALthough my car is auto so it doesn't blow smoke on gear changes like a manual would. Mine seems to run alright, no stalling or anything like that?
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What type of BOV sound does it make ??
Any probs with the cops ??
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 09:44
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| draven wrote on Mon, 24 March 2003 20:33 |
apparently the noise is amazing... just be sure there are no cops around when that baby opens up
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sounds 'illegal' heheheh 
come on BOVs man ! i really want one..
if i cant rice my car up any other way, I must at least have a BOV !!!! 
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 10:32
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very illegal... it's unfiltered exhaust!
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 10:59
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takes someone from cabra to come up with all these illegals aint that right Nark !
draven, what you got on your 1jz ? (bov wise)
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 18:43
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stocker
but pulled off the front bit of my air filter (sshh, dont tell the cops), so you geta little bit of noise coming through
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Location:
Cabramatta, NSW
Registered:
May 2002
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 Re: Reward for sharing your thoughts on BOVs !!
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Mon, 24 March 2003 22:42
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If you have a pod filter, you should be able to hear a sound from the recirculating BOVs. I do already, and it's just compressor stall.......
Get the screamer pipe!!! Just don't open it up anywhere near piggies!
You ever heard your car without an exhaust? It's freaking awesome!
Plus, it's not that loud. When I drove around with no muffler, my car was no noisier than my friend's 20V AE82. Having the turbos in the way quietens down the exhaust quite a bit.
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 00:45
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It will be loud, cause the wastegate bypasses the turbo's and dumps the exhaust straight from the engine to the atmosphere, Thats why they call it a screamer. Once you hit the boost limit, it will be heard a couple of suburbs away. 
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 00:49
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Ooh yeah, forgot about that... haha
I reckon it'll be OK. Just stay off max boost if there are piggies around....
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I supported Toymods
Location:
south of the big smoke
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 01:06
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I want a screamer pipe!!! anyone else got 1?
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 02:09
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Paul (supragte) has one, I am sure he would let it howl for you the next time your in Sydney. Apparently the neighbours don't like it, I can't see why
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Location:
Newcastle
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 06:39
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g'day,
i have an externally venting HKS super sequential BOV on my 1ggte.
Sounds cool, not too loud.
no probs at ALL with idle or any of that crap.
a plumb back wont make noise on a 1g through the air filter, cause the afm is a flap style, any air forced down that way will shut the flap.
Cheers
Stew
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 07:06
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| TOY77 wrote on Tue, 25 March 2003 17:39 |
g'day,
i have an externally venting HKS super sequential BOV on my 1ggte.
Sounds cool, not too loud.
no probs at ALL with idle or any of that crap.
a plumb back wont make noise on a 1g through the air filter, cause the afm is a flap style, any air forced down that way will shut the flap.
Cheers
Stew
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Stew, how come it does not affect your engine ? Have you got the stocker computer ?
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Location:
Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 07:54
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A venting BOV will never cause the AFM to shut... if this happened, the engine would stall! The sound of the BOV venting can still escape via the filter without air flowing out of the filter though.
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Location:
Bundaberg, Qld.
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 08:00
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my sequential BOV is atmo venting, and i have a AFM. the only time it stalls the engine from a fuel dump is if i vent it and then go straight to idle, to pull up at the lights.
nornmally when i am driving and change gear i pick it up before the engine gets a heap of fuel anyway...
and if i'm flogging it, i change gear sooooooo damn fast the AFM doesnt have time to dump extra fuel... 
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 25 March 2003 10:27
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| TOY77 wrote on Tue, 25 March 2003 17:39 |
g'day,
i have an externally venting HKS super sequential BOV on my 1ggte.
Sounds cool, not too loud.
no probs at ALL with idle or any of that crap.
a plumb back wont make noise on a 1g through the air filter, cause the afm is a flap style, any air forced down that way will shut the flap.
Cheers
Stew
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no probs at all ?? so u got the stock computer or what ?
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 30 March 2003 01:43
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i think im gonna get an atmospheric bov...
there is an autechnica one for $120... with 3 sound settings !
anyone have one of those ?
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 30 March 2003 02:00
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Sorry to butt in, but can you use 2 bovs togeather? I have seen cars with twin HKS SS bovs just wondering if this works?
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 30 March 2003 02:24
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cool 1, i think i may have the answer to your question !
1) for rice effect
2) for super high boost applications to do the job that one bov cant do
UMMM
By the way.. i think the aggte has a recirc BOV !!!! my friend and I saw what looks like an bov that has a line that plumbacks into the the piping.. JCMF... take a look at yours mate !
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 30 March 2003 10:26
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I don't have my engine here, but I could pretty safely say there isn't a BOV on any 1GGTE, I will check tomorrow if I go out to the workshop.
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Location:
Brisbane
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Sun, 30 March 2003 12:59
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GA70 1G-GTE's definitely don't have a BOV, and I was under the impression that it's the same deal for all 1G's. Plenty of 1G's have aftermarket BOV's fitted in Japan though, so it's not unusual to see one on a 1G.
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 00:41
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Yeah, you may have been lucky and got one with a BOV, 'coz no 1G-GTEs that I know of came out of the factory with a BOV.
Take a pic for us. You might be looking at the wastegate or something.
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Location:
Dandenong/VIC
Registered:
May 2002
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 03:22
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| Nark wrote on Mon, 31 March 2003 10:41 |
Yeah, you may have been lucky and got one with a BOV, 'coz no 1G-GTEs that I know of came out of the factory with a BOV.
Take a pic for us. You might be looking at the wastegate or something.
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will do mate - next week probably !!
ps i dont think its aftermarket...
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 04:43
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Does it look like these?
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 07:19
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far out nark, my mate is a mechanic he wont mistake them for a BOV !!! 
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Location:
Cabramatta, NSW
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 07:31
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Well, if your mechanic looked as good as you in your avatar, then I'd never question his ability........
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Location:
sunny coast, qld
Registered:
October 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 09:44
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mine just makes normal pssssshhhht sound, nothing crazy.
being an auto, i can just cruise around and not make it go off. Just don't hammer it next to cops and you will have no problem. Also, in my 2 years of driving the soarer i have only ever been pulled up twice, going too slow and 'accelerating too fast'! haha. That is with air filter, BOV and exhaust.
nice cops around the sunny coast usually.
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Location:
Newcastle
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 11:20
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G'day,
yup, stock computer and no probs.....
though i am going to have to remount it now with my new plenum and throtle body set up!!! I have bout 60cm less intercooler piping now.
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Location:
Sydney
Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 11:21
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I might go with a bosch one plumbing it back though.
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Mon, 31 March 2003 11:25
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| Nark wrote on Mon, 31 March 2003 17:31 |
Well, if your mechanic looked as good as you in your avatar, then I'd never question his ability........
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Goddam u are a biatch !! hahahahahaaha !!!
Fellas I think i will prob get the atmo BOV.. being a formwer ricer and all !
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Location:
Cabramatta, NSW
Registered:
May 2002
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 Re: Reward for sharing your thoughts on BOVs !!
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Tue, 01 April 2003 02:11
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This isn't your car is it Les?
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Registered:
May 2002
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Re: Reward for sharing your thoughts on BOVs !!
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Tue, 01 April 2003 07:33
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no... transformer boy muahahahahah
i have much better taste !
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Location:
UK
Registered:
August 2003
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Re: Reward for sharing your thoughts on BOVs !!
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Fri, 22 August 2003 14:38
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Just to add my thoughts
I had a Baily atmos BOV on me series 3 1G-GTE.. 11 psi. it was SO loud peopel stared from 200 meters away.. it was awfull... I hated it.. really annoyed me after teh forst couple of days too LOL
the main reason I took it off was because it was making my car run REALLY badly.... when I changed gear the car eas over fueling so much it was washing the bores.. the car was puffing black smoke when the BOV went off...
the worst bit tho was motorway driving..... that bit where uts partualy open as you not on boost.. but not really on vacuun either when coasting... the car spluttered and felt awfull!!! took it off and all went well again.
Currently looking for a nice neat recirculating installation....
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