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Author Exhaust by-pass valves
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 09:20   View User's Profile U2U Member Reply With Quote
I've seen the exhaust control valves for fitting inline when you have a loud system you want to be able to control the noise on but I want to find a valve that you can fit to a standard system and vent the exhaust gas to air at the push of a button.. I've seen this fitted to a newish Golf GTi on a video a couple of years back but cant find anyone who makes such a thing?
Any suggestions?
Ojc
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Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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18th Feb 10 at 09:24   View User's Profile U2U Member Reply With Quote
Wortec
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 09:29   View User's Profile U2U Member Reply With Quote
Their website is about as useful as a chocolate teapot!
gazza808
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Registered: 30th Jun 08
Location: Peterborough
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18th Feb 10 at 09:51   View User's Profile U2U Member Reply With Quote
i'm pretty sure these supply them:
http://www.americanautobarn.com/

and they're just 2 roundabouts down from where i'm sat right now lol
alan-g-w
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Registered: 9th Nov 07
Location: Glasgow
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18th Feb 10 at 09:55   View User's Profile U2U Member Reply With Quote
What is it physically that you want Davey? A way of letting the gasses out closer to the engine?
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 10:03   View User's Profile U2U Member Reply With Quote
This is what im after:

http://cgi.ebay.com/ebaymotors/BadlanzHPE-SS-Electric-Exhaust-Cutout-Cutouts-2-5-INCH_W0QQcmdZViewItemQQhashZitem27a9b8f44dQQitemZ170351195213QQptZMotorsQ5fCarQ5fTruckQ5fPartsQ5fAccessories
BarnshaW
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Registered: 25th Oct 06
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18th Feb 10 at 10:22   View User's Profile U2U Member Reply With Quote
I am pretty certain this is similar to alot of what the R32 owners do with their resonated systems? Some sort of mechanical switch
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 10:52   View User's Profile U2U Member Reply With Quote
I've seen the valves for sale but the ones I can find are designed to run inline so they dont seal up completely
t_benn_1
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Registered: 28th Sep 04
Location: Shropshire
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18th Feb 10 at 11:01   View User's Profile U2U Member Reply With Quote
R32's have them in and open over a certain rpm you unplug them to stay open all the time.

What do you want to use it for?
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 11:19   View User's Profile U2U Member Reply With Quote
I want to put (a pair) one of them before the silencers on each bank... I want V8 ROARRRRRRR.
ed
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Registered: 10th Sep 03
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18th Feb 10 at 12:49   View User's Profile U2U Member Reply With Quote
I've got this for my Corsa:





[Edited on 18-02-2010 by ed]
ed
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18th Feb 10 at 12:52   View User's Profile U2U Member Reply With Quote
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 12:55   View User's Profile U2U Member Reply With Quote
Is that a boost controlled one?

I was wondering if they would work under vacuum too, they work out cheaper than the electronic ones.
ed
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Registered: 10th Sep 03
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18th Feb 10 at 13:01   View User's Profile U2U Member Reply With Quote
It's off of an R32, they're n/a aren't they? Either way, you can get vacuum or boost solenoids which would do the job.

It's broken on that exhaust hence why I have it as it's scrapped on a warranty job. I'm going to use a servo to actuate it from a button on the dash, I think I'm going to do something really gay like having a sports mode which will make it louder and switch the map to a higher boost setting on the ECU.

They're very crude and I think you could probably make your own if you're desperate, it's literally a butterfly valve in the tube and it's not even sealed up with anything as such. You could easily make something that bypasses the centre box if you wanted to.
sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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18th Feb 10 at 13:40   View User's Profile U2U Member Reply With Quote
You get them vacuum valves on a lot BMWs, mine does but disconnected so its open all the time.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 14:01   View User's Profile U2U Member Reply With Quote
I can get these complete with flanges for a good price:



Just got a plumb a Y into my exhaust system.
ed
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Registered: 10th Sep 03
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18th Feb 10 at 14:13   View User's Profile U2U Member Reply With Quote
Looks good, what are they originally for? Will the motor enjoy being covered in shit under the car?
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 14:14   View User's Profile U2U Member Reply With Quote
They are made for exhaust cut outs or inline muffling.. The car rarely gets driven to be honest

I want it to sound mental but I dont want to uspet the neighbours so this sounds like the perfect trade off

[Edited on 18-02-2010 by DaveyLC]
sand-eel
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Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
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18th Feb 10 at 14:18   View User's Profile U2U Member Reply With Quote
It would be cool if they could be made to work in proportion with the throttle, maybe tap into the TPS so it could control the motor, so at full throttle it is fully open.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 14:27   View User's Profile U2U Member Reply With Quote
The servo that control them takes too long to activate.
DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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18th Feb 10 at 14:29   View User's Profile U2U Member Reply With Quote
...And my plan is to make the V8 plaque thing on the dash into a button to turn them on and off

ed
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Registered: 10th Sep 03
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18th Feb 10 at 17:01   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by sand-eel
It would be cool if they could be made to work in proportion with the throttle, maybe tap into the TPS so it could control the motor, so at full throttle it is fully open.
That's the idea with the vacuum driven one I have, when you go full chat it opens up the valve and makes some noise

 
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