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Location:
Epping, Sydney
Registered:
April 2003
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 14:31
 
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Errr the replacemnt Bosch BOV is leaking?????
Your going to fit a non re-circulating BOV to a non map sensored EFI system?
If that bosch valve is leaky i would be supprised! and if the supra is an auto expect to stop at sets of lights and find the engine not runing with that wank off... i meen blow off valve!
if you really wish todo the swap you will have to block off the fitting in the turbo-afm hose and get the fitting on that pipe welded your your "3000" pipe
and then cruise will the fully sik VLT owners Wooosshing regulary and un-needly
Allan
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 14:34
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Stock BOV
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 21:50
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As far as I knew the Bosch BOV was the original... 
I have been told by the mechanics that it is leaking. And it definitely sounds like it is as well.
The HKS BOV was recommended to be by a number of people as a good one, so I just went with their recommendations.....
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 22:29
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is this HKS one one of those really gay noisy ones? This one was "recommended" by several people. Guess they have different priorities.
And now it looks like I have no idea of how to fit it! The car is manual.
that sux. 
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 22:43
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So you are saying that because it's not plumb back, it's not going to work unless I have an aftermarket ECU??????
That would suck big time!
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 22:50
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hey allan this all sux really. Would say a GFB Plumback go right on?
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Location:
Sydney
Registered:
January 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 23:34
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| Caledwvech wrote on Tue, 06 January 2004 09:43 |
So you are saying that because it's not plumb back, it's not going to work unless I have an aftermarket ECU??????
That would suck big time!
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It will work, you just might get alot of exhaust poping and some stalling, especially when you come off hard throttle and clutch.
I've got a s15 BOV lying at home that i might try and use and see how it goes this weekend  as my current stock bov is pssssttting all of the sudden and can no longer hit more then 9psi otherwise i loose my neck from the fc.
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Mon, 05 January 2004 23:36
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Hmmm. It stalls now anyway when I come back off hard throttle and clutch. So that's not going to be any different. Same with exhaust popping.
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:04
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The 7M-GTE uses a mass airflow sensor which means you need a plumb-back BOV. If you get a non-plumb-back one you will regret it - the car will drive like a bag of shit.
Note that plumb-back BOV's have the advantage of being fairly quiet (usually).
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:07
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Crap crap crap crap crap.
Bugger.
Friggen hell.
Oh well, back to the drawing board now I guess.
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:08
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just whack it on eBay I guess. That is really really suckky
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Location:
Brisbane
Registered:
July 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:26
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recommend those people to your fist
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:35
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Hmmm. I am rather frustrated. I now have to go off and find some other place that sells them. And this after having waited for more than 6 weeks for this one. 
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Registered:
August 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:47
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Just go to auto one or supercheap and buy another "hooting owl" bosch one for 1/4 the price and replace it
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 00:52
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Yeah I could do that. It would do for the mean time at any rate. Do you know how much they cost at all????
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Registered:
August 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 01:08
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Not too much, try search on performance forums, pretty sure they had a thread on it there.
They have been provent to be the most cost effective replacment for the leaky stock ones.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 01:14
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They're still known to leak at higher boost levels though. You're better off getting a decent plumb-back BOV if you have a boosted 7M.
There's a bloke on PF who makes them for around $200. I have one and it's excellent.
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 02:02
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| Allan wrote on Tue, 06 January 2004 01:31 |
If that bosch valve is leaky i would be supprised!
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I wouldn't ! I had fitted one to my old soarer, and a mate is on his second on his MZ20. BUT For 50 odd bucks, you cant go wrong really. Except when you crooz thru da city with an owl under de bonnet bru!
Mine never hooted, but my mates did. I had larger piping (civic top radiator hose) and we changed my mates to the same and it fixed it. Then he replaced the BOV and the hooting began again. Witht he same piping!? :/
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I supported Toymods
Location:
Central Coast
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 02:07
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| Norbie wrote on Tue, 06 January 2004 12:14 |
They're still known to leak at higher boost levels though. You're better off getting a decent plumb-back BOV if you have a boosted 7M.
There's a bloke on PF who makes them for around $200. I have one and it's excellent.
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Have you any more info on these BOV's Norbie?!
Thanks!
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 02:23
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Yeah I would be interested in those ones as well Norbie. If the Bosch ones leak at the higher boost levels, I would be better off not getting them.
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 02:26
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theres two models of the bosch one the porsche one is ment to be better
And i really question if its actualy leaking! i think your being sold headlight fluid!
Allan
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 03:02
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| Quote: |
There's a bloke on PF who makes them for around $200. I have one and it's excellent.
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sounds like the go..
what are the most effective tests for leakingness? the pop on exhaust and stuff? then yep i think, Andy?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 03:08
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If your exhaust popping, and occasional stalling after hard acceleration is a sign of leaking then mine if most definitely leaking.
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Location:
sunny coast, qld
Registered:
October 2002
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Location:
Perth
Registered:
September 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 03:15
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| RobST162 wrote on Mon, 05 January 2004 23:33 |
2) the only way to get the 'direction' of the pipes to run similar is to turn it upside down.
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if it wasn't an AFM car...turn it upside down...? i'm not seeing the problem here re: fitment...?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 03:49
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Nah. The pipe is totally the wrong shape. It just wont fit.
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 05:53
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The dude posts as Bugle on Performance Forums, so you can contact him there or if you need his email address I can dig it up when I get home (I'm at work now).
Here's a pic of what they look like. Note they're pretty big!
I ordered mine un-polished (mine is intentionally hidden so you can't even see it) which made it slightly cheaper.
A brief description from the man himself:
| Quote: |
They're machined aluminium, brass piston type, adjustable using the grub screw and locknut on the top outlet's 1.25 inch OD so might need a bigger plumb back line? Or I can make it any size outlet really.. Inlet I make 1.25 inch OD if it's to be fitted to a hose, or just a flat 2 bolt round flange otherwise.
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Location:
Brisbane
Registered:
November 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 14:00
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* you already have an aftermarket valve
That thing doesn't even look close to factory - and I should know, I put it there!
* the symptoms you describe sound like it may be leaking to the atmosphere
Now, think about it. If you fit a larger one that is designed to leak as much (and as loud!) as possible when you lift off, do you not think that the problems will become worse? Yes, horribly so. The car will probably run fine under light and full throttle, but on liftoff it will pop, fart, and on heavy liftoffs it will stall regularly (worse on auto than manual though).
* get another one for fifty bucks from any autobarn
Just ask for a "Bosch plastic blow off valve" and they will get you one that looks exactly like the one on the car - and it will hook straight up.
They're good to about 14psi. That one has been on the car for a few years.. what do you expect for fifty bucks?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Tue, 06 January 2004 21:34
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Yeah I realised that it wasnt stock after I saw that picture.
Guess I will go get one from autobarn or whatever.
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 03:41
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what's wrong with NOrbie's one? it looks like it is built to last, AND adjustable
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 04:16
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It's $200 whereas the Bosch one is $50
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 04:22
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well I suppose that is ok if you are only planning on keeping the car for 2-3 years....
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Location:
Brisbane
Registered:
July 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 04:29
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cheap bastard  jokin
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 13:29
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Hey guys check this... could we for now just do something like this?
Rob
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 13:30
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P.S. I am referring to the BOV arrangement  sorry about the huge pic, I just happenned to see this when looking at Prestige Imports
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Location:
Brisbane
Registered:
July 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 13:38
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| RobST162 wrote on Thu, 08 January 2004 00:30 |
P.S. I am referring to the BOV arrangement sorry about the huge pic, I just happenned to see this when looking at Prestige Imports
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i didnt even look at bov.. i just thought "fuck thats nice"
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 13:39
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But its not plumb back, and AFM's need plumb back
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 14:11
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I'm noticing the handbrakes are all out of adjustment (ie siting a mile high) on these imports looks like there seeing a bit of handbrake work!
Allan
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Registered:
June 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 21:35
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It is not true that all externally venting BOV's will cause the car to stall when you stop etc...
If the BOV is made to vent externally (not a plumpback venting to atmosphere), then it will not stall as the valve fully seals and thus not by-passing any air after the AFM which causes the stalling.
It will however get the ECU in a bit of a twist because the AFM has measured a certain amount of air and when the BOV vents some of that to atmosphere the ECU has already calculated for it to be in the system somewhere and has provided the fuel for it also, this can cause the engine to run rich between gear changes resulting in a black puff out the exhaust, popping in the exhaust & sometimes the odd flame or two. Nothing too detremental to the engine/turbo.
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:17
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flames..... cool 
well the point is, we may as well stick it in till Andy gets the money for another, plumback one, if we can.
If the HKS one is a full on gay 'phhhhhh' system then it will have to go... and even more so if it causes the ECU to go nuts..
in terms of blocking off the old outlet and vacuum pipe, how is that done, just a clamp and a screw perhaps?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:17
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An odd flame or two?????
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:32
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| E30-323ti wrote on Thu, 08 January 2004 07:35 |
It is not true that all externally venting BOV's will cause the car to stall when you stop etc...
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| Quote: |
It will however get the ECU in a bit of a twist because the AFM has measured a certain amount of air and when the BOV vents some of that to atmosphere the ECU has already calculated for it to be in the system somewhere
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But that's exactly what causes the engine to stall when you use an externally venting BOV!
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:39
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Ok ok, you say that's exactly what causes the engine to stall, but some constructive help would be nice. Suggestions on what I could do. Is that picture there feasible etc?
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Location:
Gold Coast
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:43
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Just get a plumbback..
If you want to send money on a ricey expensive shiny bov just get a Turbosmart Type 3 plumbback.
Any vent to atmo bov is not going to work well on a AFM car.
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 22:54
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Hmmm.
Autobarn here I come...
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Location:
Brisbane
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 23:13
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Is it just me or is this thread going around in circles?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 23:19
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LOL. Yes it is.
Rob shut up and stop bringing up new ideas.
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Registered:
June 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Wed, 07 January 2004 23:19
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| Norbie wrote on Thu, 08 January 2004 09:32 |
| E30-323ti wrote on Thu, 08 January 2004 07:35 |
It is not true that all externally venting BOV's will cause the car to stall when you stop etc...
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| Quote: |
It will however get the ECU in a bit of a twist because the AFM has measured a certain amount of air and when the BOV vents some of that to atmosphere the ECU has already calculated for it to be in the system somewhere
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But that's exactly what causes the engine to stall when you use an externally venting BOV!
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AFM'd engines usually stall with leaky atmo venting BOV's because when the engine drops back to idle the valve is partially open, this means unmetered air is entering the engine which causes the engine to stall.
Most externally venting BOV's have an adjuster on top, this is used to increase the preload on the spring inside the BOV if you are having leakage/stalling issues.
This is why stock BOV's can not be vented to atmosphere.
Plumb back BOV's usually have much softer springs and are held open for longer by engine vacumn, this is why they can not be vented to atmosphere. Metal BOV's like the stock VR-4 & 7M one can be squashed in a vise to increase the spring preload and reduce leakage, but that is just plain crappy!!
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 01:57
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and what is wrong with the HKS one if it doesn't leak?
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:05
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Well according to some people atmo venting BOV's arent good for AFM cars. Although other's seem to think otherwise.....
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:07
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yeah, but running rich won't kill your car till you can get yourself a proper one, and at least with this nice ricey HKS one, till you do, you won't be leaking and having as crappy performance.
right? (don't hurt me please)
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:14
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Yeah, but wouldnt it be better to just go and get a $50 Bosch one that would last me until I can get a decent plumb back one, or a new ECU, rather than go to all the trouble of changing pipes over???
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:21
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I'll assume you are kidding...
well... do you have $50 right now? When were you going to be able to get to Autobarn? A few screws and clasps are not hard to fit.
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:39
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No, I am not kidding. I plan to have a good ECU in that car in less than 2 years time. A Bosch one will last that long.
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Location:
Epping, Sydney
Registered:
April 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 02:40
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yeah but we are not talking about 2 years time right now...
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Location:
Melbourne
Registered:
May 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 03:14
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FFS pick up the phone to talk bullshit you post whores!
Allan
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Location:
Sydney
Registered:
June 2003
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 03:23
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LOL.
Look at the 3 word story for post whores.
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Location:
Castlemaine Vic
Registered:
November 2002
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Re: MA70 7MGTE BOV Installation Grrrrrrr
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Thu, 08 January 2004 03:37
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hmm, dunno where this fits in to it at all, but anyways.
i had the bosch plumb back on my auto ma70, and now iv got a GFB one, no plumb back and it works fine, doesnt back fire, doesnt run shit, and has only stalled twice since its been one for a month.
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MA71 7MGTE BOV Installation Grrrrrrr :)
