Blocking Off Bov

[MICKAJ]

Can ppl post pics of how they blocked off BOV pipes on the manifold. I am looking for blanks to clamp onto the manifold but I can't find any in this goddamn small country town of mine. also Does it look dodge if I just left the rubber piping on took the BOV out and jammed plugs in the rubber pipe?

[our06t]

use the 1 inch rubber bits that go on the bottom of metal chair legs and clamp them up nice an tight ,have heard you can just clamp the 5mm tube that runs off the bov and that works to

[Dillz]

"Turbo charged engines operating at wide open throttle and high rpm require a large volume of air to flow between the turbo and the inlet of the engine. When the throttle is closed compressed air will flow to the throttle valve without an exit (I.e. the air has nowhere to go).

This causes a surge which can raise the pressure of the air to a level which can be destructive to the engine e.g. damage may occur to the throttle plate, induction pipes may burst. The surge will also decompress back across the turbo as this is the only path that the air can take. This sudden flow of air will often cause turbulence and a subsequent whistling noise as the air passes past the compressor wheel.

The reverse flow back across the turbo acts on the compressor wheel and causes the turbine shaft to reduce in speed quicker than it would naturally. When the throttle is opened again, the turbo will have to make up for lost momentum and will take longer to achieve the required speed, as turbo speed is proportional to boost/volume flow. (This is known as Turbo Lag) In order to prevent this from happening, a valve is fitted between the turbo and inlet which vents off the excess air pressure. These are known as an anti-surge, bypass, blow-off or dump valve. They are normally operated by engine vacuum.

The primary use of this valve is to prevent damage to the engine by a surge of compressed air and to maintain the turbo spinning at a high speed. The air is usually recycled back into the turbo inlet but can also be vented to the atmosphere. Recycling back into the turbo causes the venting sound to be reduced and can actually help keep the turbo spooled while changing gears. The benefits of venting to the atmosphere are simply the ease of installation (because there is no need to run an extra hose to plumb the charge back into the system) and that it makes a sound considered desirable by some. There are no/little performance benefits for venting to the atmosphere, but because a Dump Valve is present the Turbo will slow down naturally rather than forcefully and will shorten the time needed to "spool-up" to counteract any turbo lag."

Just a thought

[EDXR8Sprint]

Is that a C+P from a blow off valve manufacturers website

[Dillz]

Lol, Nah but it makes sense.

[Sasha]

Just use a 1" poly pipe blank from you local hardware store. If your car is stock and running low boost you shouldn't have any detremental effects by doing this especially with an auto. High boost applications, with a manual transmission on the other hand may cause damage to the turbo eg. broken shaft, if the engine is raced.

[Sasha]

This is all I used in the early days.

[YPURV4]

Lol, Nah but it makes sense.

Not really, I run 16 psi never had a BOV, run 335 rwkw every day and have run high 11 sec pass so it cant be to bad, or maybe if I put one on ill run 10's and have 400rwkw

I reakon they only made BOV so rich pricks in the turbo BMA's didnt have to here the induction sound, then the ricers got a hold of them and bang every one loves bov's.

[Sasha]

There you go Mickaj Straight from someone that makes respectable power and doesn't have one fitted. YPURV4 is one of many not using a BOV. The number of cars out there that don't have them as oposed to the number of turbo failures that have actually been proven to be a caused by stalling the turbo is minimal. I would expect to see Heat fatigue, stressed , vibration cracking, lack of lubrication to bearing/bush, as more common failures before a snapped shaft from dosing.

[Dillz]

Not really, I run 16 psi never had a BOV, run 335 rwkw every day and have run high 11 sec pass so it cant be to bad, or maybe if I put one on ill run 10's and have 400rwkw

I reakon they only made BOV so rich pricks in the turbo BMA's didnt have to here the induction sound, then the ricers got a hold of them and bang every one loves bov's.

How come you don't use one? I don't mind the sound (aside from VL turkey's) I do reackon they assist looking after the engine and in theory help keeping the turbo spooled has to help your 1/4 time.