Thought on Blow Off Valves
- Thread starter TIM Z
- Start date
I drive a Kenworth with a C-15 Cat in it and on downshifts on steep up hills I bark the turbo sometimes because of having to shift so fast and not using the clutch. 600,000 kms and no turbo failure yet.
Dont worry, I'm pretty sure the charger on my Buick cost me far more than most do for our trucks....at least its more than a 4204R
Haha I shouldve stated that when you make ten bucks an hour it's a wise investment for a street truck. That's all
Just saying, I remember coming across several vids of BOVs on D-Maxs one drunken night on youtube
it only has to happen once and boom! any ways i would not worry about it since i see you have twins. i came to the conclusion that without it, you chop the throttle and bark. the turbo spins at over 100,000 rpm, and when you bark it, it stalls the turbo (stops), and starts spinning in the opposite direction. the the wheels can and sometimes do touch the compressor or exhaust hsgs. you have exhaust flow spinning the turbine one direction, and the boost psi built up in the intake that is coming back into the compressor hsg thus spinning the comp wheel in the wrong direction. this is hard on the turbo wheels and the shaft (when the wheels want to spin in the opposite direction of each other on the shaft. most or all exhaust wheels are friction welded to the shaft ( like intake or exhaust valves in cylinder heads)
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Dodge cummins turbo barks alot when modded but I don't hear of those trucks blowing turbos??? Why?
What I have on my truck has little to do with it as I play with others trucks far more than I do my own. But what makes you thinks twins are irrelivent? I can stall my turbo(s) with twins.
As I said its far more likely there was a defect in the turbo. Most people can stall their turbos hundreds if not thousands of times with no problems.
Not true. Every truck Ive swapped turbos on that was beaten on and barked was in way worse shape. My own, and reeces turbos were not fine at all. They were f'd. Now on my other buddies truck who is nice to it, his turbo was fine. Ive seen lots of IHIs that looked and felt like they were ready to come apart. Now Im aware this isnt just from barking it, but I do feel like its a factor. My truck personally was barked a ton, and only saw 27PSI a handful of times. Like I said for a street truck driven on a budget a BOV is nice especially if you live where there are mountains
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Not true. Every truck Ive swapped turbos on that was beaten on and barked was in way worse shape. My own, and reeces turbos were not fine at all. They were f'd. Now on my other buddies truck who is nice to it, his turbo was fine. Ive seen lots of IHIs that looked and felt like they were ready to come apart. Now Im aware this isnt just from barking it, but I do feel like its a factor. My truck personally was barked a ton, and only saw 27PSI a handful of times. Like I said for a street truck driven on a budget a BOV is nice especially if you live where there are mountains
I just put twins on my turck at 90,000 miles. My turbo had been stalled hundres of time and there was no thrust play, and minimal lateral...felt like the day the truck was new
Not true. Every truck Ive swapped turbos on that was beaten on and barked was in way worse shape. My own, and reeces turbos were not fine at all. They were f'd. Now on my other buddies truck who is nice to it, his turbo was fine. Ive seen lots of IHIs that looked and felt like they were ready to come apart. Now Im aware this isnt just from barking it, but I do feel like its a factor. My truck personally was barked a ton, and only saw 27PSI a handful of times. Like I said for a street truck driven on a budget a BOV is nice especially if you live where there are mountains
Did you buy your truck new? What about your friends? Is it possible anything went through the intake at one point or another. Do you have any data to back your claim of turbo failure due to turbo bark? If yes, why is it now just coming out that your turbo and your friends turbo were junk because of turbo bark? Also, is it possible that too much fuel caused your turbo to become junk?
happens all the time! the industrial injection turbo i mentioned blew up was on a cummins 12v. pulling trucks are supposed to have 2 cross bolts in the down pipe to prevent the exhaust wheels from flying out the exhaust and killing someone
twins are a little harder to stall due to the fact that the turbos are not spinning at super high rpms and have alot of pipeing the boost psi has to reverse through
Never claimed failure. Buddies truck was new. 2700ms isn't too much fuel. Point was barking was the common factor in a few trucks. That's all. Also something in the intake would cause damage to the fins. Which all were fine and in normal shape
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super diesel
<<<< Under Pressure
If some folks think barking is no biggy, than so be it. I however chose to TRY to protect mine to what ever degree I can. Maybe we should bring this up. "Is the blowoff hurting the turbo or helping reduce RPM reversal in them (which can't be a friend to them)?" I like full coverage insurance myself. To each his own.
Wow.
This discussion has brought out points i hadnt thought of, such as a gasser needing it due to throttle body closing.
I wandered why they dont come on Turbo diesel trucks. Still a Diesel Newb here in some aspects.
But if it protects the turbo i cant see how thats gay, Its not out fault the fuggin ricers get em for the wrong reasons.
I cant believe a BOV creates " ill feelings" such as it has. I kinda thought it would be a cool mod to protect the turbo if neede on a Diesel.
My Turbo Z-71 Gasser had one and would never come close to bieng confused with rice.
This discussion has brought out points i hadnt thought of, such as a gasser needing it due to throttle body closing.
I wandered why they dont come on Turbo diesel trucks. Still a Diesel Newb here in some aspects.
But if it protects the turbo i cant see how thats gay, Its not out fault the fuggin ricers get em for the wrong reasons.
I cant believe a BOV creates " ill feelings" such as it has. I kinda thought it would be a cool mod to protect the turbo if neede on a Diesel.
My Turbo Z-71 Gasser had one and would never come close to bieng confused with rice.
