Blow Off Valve

[JonB12869]

I have been lookin for a blow-off valve but all I find are ones for the damn japs.

Where can I find one?

If you have one on your car, was it easy to install, did it affect or improve performance in any way?

Thanks,
Jonathan

 

[ttypewe4jim]

Originally posted by JonB12869
I have been lookin for a blow-off valve but all I find are ones for the damn japs.

Where can I find one?

If you have one on your car, was it easy to install, did it affect or improve performance in any way?

Thanks,
Jonathan

it will not help you performance in ANY way plus imo you are just wasting your money auto cars have no need for one

do a search on this it will bring up TONS of info

 

[salvageV6]

Turbonetics has one I believe.

 

[Lunkan]

http://www.turbolunkan.com/images/bov.jpg

I haven´t installed them yet, still waiting for my new up-pipe and MAF-pipe to arrive.

No, they will not gain any performance, nor will they affect it negative either (if adjusted correctly). BUT, they WILL do what they are supposed to, lead away overpressure after You get off the pedal.

Do You need it? Good question.

Do I need it? Yes. I had problems as for the up-pipe blowing of from either the IC or TB. This was because of too high pressure.

/Andreas

 

[turbocliff]

Originally posted by Lunkan
http://www.turbolunkan.com/images/bov.jpg


Do I need it? Yes. I had problems as for the up-pipe blowing of from either the IC or TB. This was because of too high pressure.

/Andreas

I think you're problem might be that either the up-pipe is not beaded at the ends, or the slicone connection hoses have oil and dirt in them causing them to slip off.

And once again, I too will agree that there is no performance gain from a blow off valve, and they don't belong on automatic cars. The only argument that there is to justify having a blow off valve is that it will help extend turbo life because it eleminates the built up pressure from pushing itself back through the turbo compressor wheel went you let off under boost. That is it's ONLY function.

 

[turbo2nr]

I had the ATR front mount IC and the optional BOV. I liked the sound, made me smile. Better than brbrbrbrbrbrbblah. The ATR unit quickly rusts its bolts, and is not the best looking unit out there, but does have a big valve, and is adjustable. I am currently getting together some pieces to put on two OEM Subaru BOV. Many have a recirculation port in addition to a port to vent to atmosphere. The recirculation feature is for cars with MAF sensors,(plumb into turbo intake to recirculate the air round and round) But the TRs have a feature that ignors the MAF when returning to idle TPS, so that feature will do nothing. None will be a bolt on. You will have to weld/grind. A pretty unit is from Turbosmart, also has a big valve.

Scott

 

[JonB12869]

well if anyone knows where I can get a bolt-on BOV for an 87' GN where I wont have to weld, grind, Please let me know.

 

[Lunkan]

Originally posted by turbocliff
I think you're problem might be that either the up-pipe is not beaded at the ends, or the slicone connection hoses have oil and dirt in them causing them to slip off.

The only argument that there is to justify having a blow off valve is that it will help extend turbo life because it eleminates the built up pressure from pushing itself back through the turbo compressor wheel went you let off under boost. That is it's ONLY function.

That was what I first thought too, but it wasn´t the issue. I bought new silicon hoses (5 walls) and the pipe do have beaded ends.

The air can´t push back through the wheels. How much pressure do You need to press AGAINST the compressed air that´s leaving the turbo? That´s why my hoses kept popping, the backpressure was too big. But it does hurt the turbine wheels though.

Some say this is rubbish and "I have run my stock turbo for ages". But how long have You run those big turbos with large amount of boost?

 

[Louie L.]

Originally posted by JonB12869
well if anyone knows where I can get a bolt-on BOV for an 87' GN where I wont have to weld, grind, Please let me know.

There is no bolt on BOV for TRs. They all need some kind of fabrication.

 

[turbo2nr]

It is the thrust bearing that gets a beating, not the wheels. And no, no bolt on BOV, all require welding/grinding, unless you have bought the ATR front mount.