Jump to content
SAU Community

Recommended Posts

how do i make my car make pretty noisess. my mates mates bros car has flutter.

joking

anyway just some advice basicly my new setup has aftermarket plenum and turbo etc, so i want to keep the piping nice and pretty, so recirculated bov is out of question because i dont want some ugly pipe from plenum to intake pipe. means i will have to run an venting bov.

2 questions.

1st. should i also put the afm into the intercooler pipe on the cold side? and should this be placed closer to the throttle body before the bov so. plenum => throttle body => afm => bov => cooler

2nd. is there any venting bov which is silent and doesnt make every1 look at u when it has its hecktic "WOOOSHH POSSHHH LOOK @ ME IM GAY"

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/
Share on other sites

1. aftermarket front facing plenum.

2. trust turbo, trust turbos dont like no bov.

3. for a track drift car, so when i come into a corner top of 3rd and lift off pedal so the car doesnt stall and i crash n die.

you have a Plazmaman Plenum dont u think the recirculate pipe is ugly as?

Cameron%20Skyline]%20cameron%20skyline%203.jpg

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4950398
Share on other sites

get a flange welded onto your cooler piping and mount your bov behind one of the headlights (i have myne on the drivers side) and run the recirc pipe behind the cooler and back up with the piping into the intake pipe. atmo bovs and afm's dont go together too well most of the time

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4950407
Share on other sites

Ugh i know what you mean, just bought a 33 with a fully hektic BOV.. I would be fine with it at the track or something (I am childish at heart and the noises make me giggle ;) ) but for the street it is serious cop bait!

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4950430
Share on other sites

Simple two answers. Dont move the AFM, no idea why you are considering that. And no atmo bov will be quite.

He's considering it because when you do a draw through set up like he's talking about, it prevents stalling when the BOV does it's thing, and many people have problems with turbulence in the intake piping when they use a MAF on a top mount set up due to space considerations and not being able to keep the MAF far enough away from the turbo.

OP--of all the BOV's I've seen going VTA, the Greddy Type R seems the least obnoxious to me. It's a relatively large orafice it vents through so it's quiet'ish and decidedly not "chirpy". I'm completely with you on your taste of BOV noise (or lack there of).

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4950493
Share on other sites

anyway just some advice basicly my new setup has aftermarket plenum and turbo etc, so i want to keep the piping nice and pretty, so recirculated bov is out of question because i dont want some ugly pipe from plenum to intake pipe. means i will have to run an venting bov.

Hey,

I don't think a re-circulating system is out of the question.

The BOV can be placed at any point between the compressor and the throttle plate(s) - it doesn't need to come off the plenum.

So you could put it right near the turbo outlet and run a short pipe back to the inlet (downstream of the AFM), can still be pretty.

2 questions.

1st. should i also put the afm into the intercooler pipe on the cold side? and should this be placed closer to the throttle body before the bov so. plenum => throttle body => afm => bov => cooler

If you do this, a re-circulating setup from the perspective of measuring air becomes useless - you can't re-inject the air downstream of the AFMs anymore.

2nd. is there any venting bov which is silent and doesnt make every1 look at u when it has its hecktic "WOOOSHH POSSHHH LOOK @ ME IM GAY"

Not really. The bigger the outlet pipe diameter, the less velocity/noise - but I haven't seen a 10" BOV. The more boost, the more noise upon release.

If you are going to keep the AFM setup, and you think a BOV is essential, then leave the AFM upstream of the compressor and put a re-circ system into place.

I'm sure someone can make this pretty for you (and you won't have to explain why your car sometimes tries to set fire to the cars behind it to the po-po).

Or if the current pipework is finished and you really really don't want the noise, leave the BOV off entirely.

Or if you want a justification for fitting an atmo BOV - man up, you don't need one. Just fit what you want ;)

Regards,

Saliya

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4950497
Share on other sites

i never really took much notice in other peoples setup.

what do most peopple do with highmount setup with forward facing plenums?

i was planing to go no bov but then my turbo choice changed to a trust, and i know heaps of peopole with trust setups with no bov and they all need rebuilding LOL

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4952093
Share on other sites

well I'm running a T518Z on my silvia with all metal intake and cooler piping and no BOV. no problems at all from the turbo but you'll need to be prepared to live with some chronic tutututututu everytime you lift of the throttle or change gear. I haven't seen any ill effect from not having a BOV on it but I think I might add one purely to get rid of the insane noises it makes....

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4953264
Share on other sites

Well the Synapse Synchronic BOV is one of the quietest I've ever heard. Vid here:

http://video.google.com/videoplay?docid=-1..._WOAw&q=bov

Link: http://www.synapseengineering.com/

Edited by benro2
Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4953505
Share on other sites

lol. I think they need a lesson in turbo charger operation basics. compressor surge is a phenomenon that occurs where a compressor is producing more airflow at a point where the engine cannot ingest it. it also occurs in twin turbo engines and is sometimes refereed to as turbo shuffle etc. it is eliminated by carefully reviewing compressor maps and choosing the right turbo and some manufactures also add small bypass holes (anti surge covers/slots/etc) to combat it too as the turbo is spooling up. as for the turbo spinning in the other direction. rofl. that would be a neat trick to stop a compressor AND turbine wheel that are spinning at 100,000rpm and linked by a common shaft and make them turn the other way in a split second even though there is constant pressure on the exhaust side keeping it turning the same way..... I would like to see them demonstrate that.

by their logic my turbo must be super fked by now. it's been running without any kind of bov since new and by now must be just as good at spinning backwards as it is at spinning forwards. imagine that. every time I lift off the throttle my turbo spins backwards and forces exhaust gas back into my engine and at the same time is sucking air and fuel out of the intake and blowing it out the pod filter. bummer dude.

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4954721
Share on other sites

lol. I think they need a lesson in turbo charger operation basics. compressor surge is a phenomenon that occurs where a compressor is producing more airflow at a point where the engine cannot ingest it. it also occurs in twin turbo engines and is sometimes refereed to as turbo shuffle etc. it is eliminated by carefully reviewing compressor maps and choosing the right turbo and some manufactures also add small bypass holes (anti surge covers/slots/etc) to combat it too as the turbo is spooling up. as for the turbo spinning in the other direction. rofl. that would be a neat trick to stop a compressor AND turbine wheel that are spinning at 100,000rpm and linked by a common shaft and make them turn the other way in a split second even though there is constant pressure on the exhaust side keeping it turning the same way..... I would like to see them demonstrate that.

by their logic my turbo must be super fked by now. it's been running without any kind of bov since new and by now must be just as good at spinning backwards as it is at spinning forwards. imagine that. every time I lift off the throttle my turbo spins backwards and forces exhaust gas back into my engine and at the same time is sucking air and fuel out of the intake and blowing it out the pod filter. bummer dude.

:)

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4954849
Share on other sites

Hahaha!

Seriously, the whole "BOV" and "dose" and "compressor surge" thing is probably the most misunderstood and misleading bunch of shit read about on the internet.

I run a BOV on mine, but it is wound up that tight it hardly ever goes off unless im on full noise, which is the way i like it.

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4955156
Share on other sites

3. for a track drift car, so when i come into a corner top of 3rd and lift off pedal so the car doesnt stall and i crash n die.

The car will only "stall and die"  if your clutch is in. 

I don't run a bov,   mine can stall between gears but only if there is a reasonable load on the engine and I change gears really slowly.

Not when lifting off and still in gear.

Link to comment
https://www.sau.com.au/forums/topic/297313-bov-question/#findComment-4955508
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Seat of the pants assessment of the new intake: The car is way less "doughy" when hitting the loud pedal, especially off idle when stopped or in traffic, I did use a cheapo lazer thermal thingo to measure the temp around where the pod filter got its air, it was between 55 - 60°C, in saying this the car was shut off and not moving, so the OEM intake pipe was not supplying any fresh air to where the pod was when the car was at least moving A weird bonus was induction noise on the throttle in the cabin increased a bit,  I was worried that I was actually going to lose some of that induction noise I love so much, outside though, when I got the daughter to do a WOT drive by pass for me, the induction noise has increased alot when on the throttle, not quite ITB doort, but well up there I'm extremely happy with the results and have been exploring the country roads in the region  As for house mods: 1.New front fence is up and is awesome, it really upgraded how the joint looks from the street, and the added security is nice 2. Electricians have replace some interior lights, and with more lighting in the garage, a few new motion detecting lights out the front above the garage, front room, and at the front door, which I have already found heaps helpful coming and going, also now has fancy pants CCTV all round the house The only hold point for power though is the solar and batteries due to supply issues, although this will happen over the next few weeks 3. I have done a heap of landscaping out the front and I'm almost ready to do a new small retaining wall with some nice blocks to replace the brick and cemented in rocks around the raised garden beds cemented in river stone "was the fashion at the time" the house was built. I currently have a pallet of retaining wall blocks and 2 bulka bags of 20mm blue metal to replace the wood chip that is in the raised garden beds around the house 4. I now have 3 big raised garden beds for out the back to grow some vegetables, about 70cm high, 200cm long and 100cm wide 5. My 2 compost bins are already pretty full with brown, green and kitchen waste from the landscaping I'vedone so far, but they will probably take a few months to break down, so anything else that gets chopped, trimmed, and kitchen waste will just start filling the base of the raised garden beds to about 30cm before I start throwing 40cm of good compost, and stuff, for the vegetables to grow in, I'll need a few ton of compost and soil, but the local supplier can sent me bulka bags of the stuff Basically the logs, wood chips and a few strategically placed rocks for drainage, will give the beds some good organic materials down low to break down over time, and they will hold moisture during the warmer months to save the water in my big arse water tank if we don't get alot of rain So, all in all, the car and house mods are going well, and I'm really enjoying being retired, I sleep in too 0700 and slowly plod around inside until I feel like actually doing anything, and only work in the yard for as long as want, which has actually been alot over the last few weeks,  although when you look at it, it seems that not a huge amount of work has been done,  until I look at the before I started the work pics Happy days and good times indeed 
    • hahaha yeah. Plan is to get side skirts and probably just rear pods. But going to do them one-by-one. I've got a set that I really like from RHDJapen, but that one isn't shipped to AU. So need to find someone who can get it for me
    • Here's an idea, answer the questions I asked you as they are trying to work out WHY the LSD will be binding up in a straight line.
    • You haven't driven many modern cars then have you? Most of them have sfa steering feel with their stupid electric bullshit steering systems.
×
×
  • Create New...