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May 26 07 7:17 PM

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does anyone here have a blow off valve in their festy?

and can pls give me some information on how to go abouts to getting one... so far i have a stock engine

ta
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#1 [url]

May 26 07 7:50 PM

Are you talking about a nitrous blowoff, or the commonly called blow off valve on a turbo? If you are running a stock engine, what would you hope to accomplish with a blow off valve, or better question: What exactly would you be blowing off?

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#2 [url]

May 26 07 9:49 PM

Funny story for you all. I know a chicky that works at autobarn and about once a week some dickhead will come in and ask for a BOV, naturally she asks is the car superchard or turbocharged, the customer replies with, ummm ntiher its my stock V6 commador i just want it to have the cool "pschhh" sound

Over on another aussie forum a guy ran a BOV on his nissan cefiro to vent the boost created by his ram intake. Not only proved that ram intake is a load of ###### but made himself look stupid

Now, a BOV is used to vent boost pressure between gear changes so that when the throttlebody rapidly closes the air dosnt get forced back into the turbohousing creating big problmes that ultimatly will result in you turbo becmong a paperweight. NO TURBO, NO BOV

Now to answer your original question any auto stores in australia such as supercheap, autobarn, repco will sell BOV's, but rember ones that vent the gages to atmosphere and make a noise are illegal and are a defect. The only legal ones are ones where the gas is plumbed back into the exhaust stream as to comply with EPA emmisiion laws

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#3 [url]

May 27 07 12:05 AM

yer i know i need a turbo... im more after where to get a good quality one, i dont really trust supercheap auto much, and does anyone have a blow off vavle picture? with the turbo

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#4 [url]

May 27 07 1:27 AM

Blow off valves are mounted between the intercooler and the throttlebody, usually closer to the throttlebody of the car

Dsont matter where u buy it from its the brand you should be concerned about. Good brands include HKS, Greddy, Blitz and the likes

Cant find a decent picture atm

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#5 [url]

May 29 07 6:14 AM

Turbosmart do top notch BOVs....

check it out...


SPIRO
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user posted image

2000 Ford Aspire WF 1.5 3dr (current)
1989 Ford Capri SA 1.6 (current)

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#6 [url]

May 29 07 3:07 PM

QUOTE (fusion @ May 27, 2007 12:05 am)
yer i know i need a turbo... im more after where to get a good quality one, i dont really trust supercheap auto much, and does anyone have a blow off vavle picture? with the turbo

user posted image

The red thing is the bov on a uicp. Hope this helps.

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#7 [url]

May 30 07 6:09 AM

ta sho,

and is a flutter noise also created by a BOV (just a different type) or is it completely different?

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#10 [url]

Jun 4 07 2:20 AM

The fluttering noise is called back spinning. Its not really good for it even tho it sounds cool. Its when the pressure getts forced back in the turbo blades giving it that chopping noise cause the pressure dont get vented. Its not that bad at low boost but higher boost with the same prob it hard on the turbo seals.

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#12 [url]

Jun 15 07 10:28 PM

I always heard those blow off valves wher used on higher end turbo's to make the rpm's drop quicker when you let off the gas. Like a strong after market turbo without one will hold the boost pressure for a little while after you let off the gas wich keeps the rpm's from dropping down right away, wich makes it take a lil longer before you can shift to the next gear. Thats what I always thought anyway. I should probable research this a lil more.

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turboren

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#14 [url]

Jun 20 07 6:54 PM

QUOTE (Turtle @ June 15, 2007 10:28 pm)
I always heard those blow off valves wher used on higher end turbo's to make the rpm's drop quicker when you let off the gas. Like a strong after market turbo without one will hold the boost pressure for a little while after you let off the gas wich keeps the rpm's from dropping down right away, wich makes it take a lil longer before you can shift to the next gear. Thats what I always thought anyway. I should probable research this a lil more.



The actual reason for venting the boost when the throttle is closed is to prevent compressor flow reversion, as mentioned earlier. The RPM drop is a byproduct.

Ren

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