blow off valve
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blow off valve
i have a 2003 7.3l psd I want a blowoff valve,,for sound and all...what do I need to know when going about buying one...and what is a good..loud one?...any and all help is appricieted
Postmaster
Joined: Apr 2004
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From: Ellensburg, Washington
I second that. Do you wanna have a bunch of dead beat teenagers tryin to lower your rig and put unpainted body panels on the underside of it for "better aerodynamics" lol. Straight pipe it and let your pipes do the talkin
Cowboy Steve
Cowboy Steve
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Joined: Jun 2007
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From: Austin, TX
not a ricer valve. i don't know that a blow off valve will do any good when you have a wastegate....
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Post Fiend
Joined: Jul 2005
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From: 21791
Not technically a "ricer valve". Even mustangs and turbocharged buicks, anything with a throttle plate "needs" them. See, diesel engines lack a throttle plate, they are throttled by fuel, not air. The only thing a blow off valve will do when it activates is make a sound. I'm not sure it would make too much of a sound anyway as pressure isnt really forced out of it like it is in a gasser. You let off of the throttle, but your engine is still turning and there is no inlet restriction, the air at boost just keeps flowing into the engine, thats it. Maybe a small amount will creep out backwards through the turbocharger but the blowoff valve on these engines is not needed.
Strokin'_tatsch, the wastegate has nothing to do with needing a blow off valve. Looks like you need to read up on some Turbo Tech 101.
http://www.turbobygarrett.com/turbob...o_tech101.html
Strokin'_tatsch, the wastegate has nothing to do with needing a blow off valve. Looks like you need to read up on some Turbo Tech 101.
http://www.turbobygarrett.com/turbob...o_tech101.html
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Joined: Jan 2006
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From: Hartford, WI
Originally Posted by strokin_it7.3
Even mustangs and turbocharged buicks, anything with a throttle plate "needs" them. See, diesel engines lack a throttle plate, they are throttled by fuel, not air.
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From: Hamilton, MT
Well if something like that were to happen I am pretty sure the airfilter popping off is the least of your worries.
And no, I have never heard of that happening but hey at least the Bov would make a cool sound while its happening lol. Anyways does the turbo on the 7.3 ever really overboost?
And no, I have never heard of that happening but hey at least the Bov would make a cool sound while its happening lol. Anyways does the turbo on the 7.3 ever really overboost?
Last edited by jvoigt; Jun 24, 2007 at 10:57 PM.
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
Just put a 6637 on and enjoy the PPSSSSSSSSSSS between gears. That and the added whistle is much less trouble, more practical, and sounds as good if not cooler because they (ricers) can't make that sound... 
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