how does this work?
10-13-05, 02:26 AM
#1
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how does this work?
This is probably a stupid question... but how does the stock BOV work?... i've always thought that the BOV makes that noise when you shift gears.. .. but mine seems to go off as im driving.. for example, in a single gear the BOV would go make the noise 2 times.. and it doesn't make the noise when i shift... Im alittle confused.. thanks for the help everyone..
10-13-05, 06:44 AM
#2
Are you hearing the ABV or CRV? (Both are blowoff valves). The ABV should vent when the secondary is prespooling, and I believe it shuts just before 4500rpm and stays shut the rest of the way. The CRV is the one that vents on throttle let-off, so if you're hearing that then something is wrong.
Dave
Dave
10-13-05, 10:46 AM
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im not sure.. dont know where things are located .. i'd like to meet up with a fellow rx7 owner who knows more about the car. and drive my car.. just to see if everything is running properly
10-13-05, 11:34 AM
#5
Shoot, I got those backwards. The CRV vents during secondary prespool (3500-4500rpm), and the ABV vents at throttle let-off.
In this picture: http://www.autosportracetech.com/RX-...BigPicture.htm the CRV is shown - it's the one with that connects to the airbox with the longer hose. The ABV is the one with the shorter hose that connects to the middle of the y-pipe.
Do you have a boost gauge? You should.
A 3rd gear boost test will tell you if it's working right. (3rd gear boost test = at 35mph/3rd gear, floor it. Boost should be 10psi, and make a quick dip to 8psi at 4500rpm. After 4500, it will stay at 10psi all the way up to redline, which is about 80mph. This is called a 10-8-10 boost pattern)
Dave
In this picture: http://www.autosportracetech.com/RX-...BigPicture.htm the CRV is shown - it's the one with that connects to the airbox with the longer hose. The ABV is the one with the shorter hose that connects to the middle of the y-pipe.
Do you have a boost gauge? You should.
A 3rd gear boost test will tell you if it's working right. (3rd gear boost test = at 35mph/3rd gear, floor it. Boost should be 10psi, and make a quick dip to 8psi at 4500rpm. After 4500, it will stay at 10psi all the way up to redline, which is about 80mph. This is called a 10-8-10 boost pattern)
Dave
Last edited by dgeesaman; 10-13-05 at 11:37 AM.
10-13-05, 11:54 AM
#6
Originally Posted by dgeesaman
Shoot, I got those backwards. The CRV vents during secondary prespool (3500-4500rpm), and the ABV vents at throttle let-off.
In this picture: http://www.autosportracetech.com/RX-...BigPicture.htm the CRV is shown - it's the one with that connects to the airbox with the longer hose. The ABV is the one with the shorter hose that connects to the middle of the y-pipe.
Do you have a boost gauge? You should.
A 3rd gear boost test will tell you if it's working right. (3rd gear boost test = at 35mph/3rd gear, floor it. Boost should be 10psi, and make a quick dip to 8psi at 4500rpm. After 4500, it will stay at 10psi all the way up to redline, which is about 80mph. This is called a 10-8-10 boost pattern)
Dave
In this picture: http://www.autosportracetech.com/RX-...BigPicture.htm the CRV is shown - it's the one with that connects to the airbox with the longer hose. The ABV is the one with the shorter hose that connects to the middle of the y-pipe.
Do you have a boost gauge? You should.
A 3rd gear boost test will tell you if it's working right. (3rd gear boost test = at 35mph/3rd gear, floor it. Boost should be 10psi, and make a quick dip to 8psi at 4500rpm. After 4500, it will stay at 10psi all the way up to redline, which is about 80mph. This is called a 10-8-10 boost pattern)
Dave
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10-13-05, 01:23 PM
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Right now the PFC is set at 12-13 psi.. not sure.. .. but i'll probably come out to red robin for tonights meet. just meet a couple people. but then i gotta split cuz i have other things planned..
10-13-05, 09:10 PM
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i met up with a rx7 owner and i have a boost leak. how do i find out where the boost leak is? is it a major problem? will it damage my motor if i keep driving on it? how do i fix it once i found where the problem is?
10-14-05, 12:35 AM
#11
Originally Posted by dgeesaman
To fix it, you replace the leaking part. Usually it's a rubber coupler.
To drive on it usually isn't a big deal, but don't pile up too many miles since in theory you can overrev your turbos and wear out the bearings.
Dave
To drive on it usually isn't a big deal, but don't pile up too many miles since in theory you can overrev your turbos and wear out the bearings.
Dave
10-14-05, 12:35 AM
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Might be a Boost Leak
Ok.. im alittle confused.. so should i be hearing the bov vent while driving? cuz it doesn't vent when im shifting.. like i said before the car vents 2 times between 3000-5000 rpm.. what should i do now?
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