Silvia Club of NSW
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Plumb back Bov's
https://forum.silviansw.com/viewtopic.php?f=12&t=34815
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Author:  Godzilladat [ Wed Nov 24, 2010 10:52 am ]
Post subject:  Plumb back Bov's

Anyone got any good pics of plumb back bov setup?

From memory they an S15 for example has a crossover pipe in front of the motor to put it back into the passenger side piping.

Author:  DumHed [ Wed Nov 24, 2010 11:39 pm ]
Post subject: 

On my car I put one on the hot pipe from the turbo to cooler, with the output going straight into the intake pipe from the AFM to turbo.

It sits between the two pipes quite neatly (I used an RB20 BOV with slight mods)

S14/15 BOV with the internal bypass hole blocked is probably the best option

Author:  EViL80E [ Fri Nov 26, 2010 2:51 am ]
Post subject: 

still curious about the difference between plumb back and not running a bov at all...

kurtis

Author:  Godzilladat [ Sat Nov 27, 2010 6:07 pm ]
Post subject: 

Andrew can you chuck up a few pics of the bov setup?

Author:  DumHed [ Sun Nov 28, 2010 4:21 pm ]
Post subject: 

will take some tomorrow if I remember :)

Otherwise drop by and have a look

Author:  DarkWave [ Thu Dec 02, 2010 4:16 pm ]
Post subject: 

Image

plumb back bov

Author:  EViL80E [ Thu Dec 02, 2010 8:11 pm ]
Post subject: 

very neat nice job

Author:  DumHed [ Fri Dec 03, 2010 5:17 pm ]
Post subject: 

Here's my RB20 BOV mounted on the hotpipe.

Attachments:
BOV2.JPG
BOV2.JPG [ 57.35 KiB | Viewed 3615 times ]

Author:  Godzilladat [ Mon Dec 06, 2010 10:45 pm ]
Post subject: 

Cheers for throwing that up, so it goes back into the intake behind the filter?

To easy, need to find some 30mm and 35mm pipe to mount this thing now.

Author:  Magnet [ Tue Dec 07, 2010 3:49 pm ]
Post subject: 

EViL80E wrote:
still curious about the difference between plumb back and not running a bov at all...


no bov makes the ladies go crazy

Author:  fergo308 [ Tue Dec 07, 2010 6:44 pm ]
Post subject: 

Magnet wrote:
EViL80E wrote:
still curious about the difference between plumb back and not running a bov at all...


no bov makes the ladies go crazy


In the 'point at the funny sounding car over there' kind of way...


Justin...

Author:  Magnet [ Thu Dec 09, 2010 11:29 am ]
Post subject: 

either way, they love it

Author:  Johnnilicte [ Fri Jan 14, 2011 11:09 am ]
Post subject: 

EViL80E wrote:
still curious about the difference between plumb back and not running a bov at all...

kurtis


stock computers don't like flutter, seems that the ECU understands when there is air coming back out the intake with a plumped back BOV but not when there's nothing. Without a BOV the air comes back out in "packets" - I use that term loosely vs a consistent air flow of a plumped back unit.

Saying that using an aftermarket ECU, I have been able to tune it so with no BOV or atmospheric there's no idle flutuation, back fires, loads of smoke, etc.

Author:  Lucius [ Tue Feb 01, 2011 3:40 pm ]
Post subject: 

Johnnilicte wrote:

stock computers don't like flutter, seems that the ECU understands when there is air coming back out the intake with a plumped back BOV but not when there's nothing.

...



I think the problem has more to do with the design of the afm. The CA18DET series of S13 (for example) didn't come with a plumb back BOV, but at the same time the hot wires were not in the center of the afm (like the Z32 one for instance), they were recessed in a little space off to the side so that they weren't effected by the 'flutter'.

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