5.9 Liter CR Dodge Cummins 03-07 Discussion of 5.9 Liter Dodge Cummins Diesels with Common Rail Injection

Blow Off Valve

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Old Dec 8, 2007 | 10:20 PM
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dalton06's Avatar
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Default Blow Off Valve

Has enyone ever heard a blow off valve on a diesel truck? I figured if a car's turbo making 10psi sounded cool then a truck at 40psi would sound even better. Atleast give the ricers something to admire. I just got mine in and noticed there is a little more wireing involved that I would have thought but will try to get it all hooked up soon.
 
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Old Dec 8, 2007 | 10:58 PM
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where did you get yours and what brand is it? i've been looking for one as i have a huge turbo bark problem and i know that would eliminate it....
 
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Old Dec 8, 2007 | 11:45 PM
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couldnt one use somthing like whats on a semi air tank, only set for 45-50psi?
 
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Old Dec 8, 2007 | 11:55 PM
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aftermarket units, my truck discharges loud enough as it is when i let off it.....

el cheapo http://www.hopupracing.com/kptwhobloffv.html

better http://www.hopupracing.com/tubloffvatys.html

good http://www.rallysportdirect.com/shop...lve-p-568.html
 
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Old Dec 8, 2007 | 11:59 PM
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logan those are for gassers..... not for diesels..... those use a vaccum reference to open the valve. when the throttle blade closes it creates vaccume and opens the valve..... diesel's never create vaccume. even if you plumbed a valve into the vaccum pump you'd still have to have a boost pressure line ran to it to keep the BOV closed under boost...... it's perty complicated to get one of those to work on a diesel..... i'm prolly gonna do it but it's gonna take a crap ton of solonoids and relays and different hobbs switches to get right.....
 
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Old Dec 9, 2007 | 02:11 AM
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bd makes one its called the turbo gaurd, thats made for diesels
 
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Old Dec 9, 2007 | 08:13 AM
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Originally Posted by Benjamin
logan those are for gassers..... not for diesels..... those use a vaccum reference to open the valve. when the throttle blade closes it creates vaccume and opens the valve..... diesel's never create vaccume. even if you plumbed a valve into the vaccum pump you'd still have to have a boost pressure line ran to it to keep the BOV closed under boost...... it's perty complicated to get one of those to work on a diesel..... i'm prolly gonna do it but it's gonna take a crap ton of solonoids and relays and different hobbs switches to get right.....
true, it was late and i was tired and i didnt think anything about it being referenced to vaccum......
 
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Old Dec 9, 2007 | 08:21 AM
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BOV
 
Attached Thumbnails Blow Off Valve-bov.jpg  
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Old Dec 9, 2007 | 08:27 AM
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cute picture Whit.......
 
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Old Dec 9, 2007 | 09:17 AM
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here is the BOV on Cummins Express truck
 
Attached Thumbnails Blow Off Valve-b2.jpg  
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