Turbo Bark?? BD Turbo Guard???

[CStraface]

So my II SB seems to bark every single time I step on it from the 3-4 shift. I am wondering if this is bad for it? Should I look into investing in BD's turbo guard? Anyone have any experiance with this product? Does it work? Do I need one? Thanks, CStraf

 

[CRiggan]

I would like to hear it from Brady Williams, But I am almost positive that the silver bullet or any Phat Shaft turbo that Industrial Injection makes can withstand turbo bark. (Within reason)



I was playing around with a ford on the interstate the other day. Every time he would pull in front of me by a 1/2 a truck length, I would floor my truck, pull in front of him and then give him another chance. My Super Phat Shaft 62 would bark a little after letting off each time. Woof Woof .



By the way the ferd never had a chance against Dual feed Industrial Injection stage 2 CP3 AND my 3 flow injectors!! :-laf

 

[CRiggan]

CStraface, That silverbullet rocks !!, From my experience It will not stop pulling on top end if you have the fuel to give it !!





So how do you like you full billet goerends trans?

 

[TCDiesel]

Obviously try to keep barking to a Minimum, although Barking will have no ill effects on the PS/SPS/SB. I know of two customers that have removed the BOV because it malfunction under certain conditions and make the vehicle un-operable.

 

[JCleary]

I've had a BD Turboguard installed on my truck for 6 months. I took it off last week (thanks for the parts, TWest!).



It only works when letting off the throttle, so on-throttle shift-induced barks will not be eliminated. If you're on the throttle and back off, it will blow off once set up properly.



A few things about it- It's an analog control setup, so you have to spend a significant amount of time dialing in all the settings for it to work properly. Additionally you have to spend some time playing with shims and springs in the valve itself so your turbo doesn't bark even when the valve is working.



I have several reasons for taking mine off-



1. When drag racing or hauling arse on the street I'd have to disconnect it, as it would blow off between shifts and never re-seat. This created a boost leak and extreme EGTS. I'd have to cycle the throttle (which cycles the valve) 4 or 5 times after to get the valve to re-seat and seal.



2. I don't think the Tial BOV is designed to work with the pressures created by our diesel trucks. My first Tial BOV went south on the way to a drag race. Getting on the freeway behind a 12v dually, I shifted and then there was a massive boost leak. It turns out the o-ring that seals the valve had blown out. Not the viton o-ring between the intake tube and the valve, but the seal portion of the valve itself. It got jammed in the opening leaving the entire valve open about 3mm. I believe the force of 55psi of air exiting the valve causes the o-ring to blow out of it's seat.



BD send me a new Tial BOV, but it only took 1 week for the o-ring to blow out of that one too. This was the main reason for me pulling the valve.



3. When set to blow off and not bark my turbo, it would vent the air down to about 3psi in the manifold. With a laggy SPS66, it would really suck to wait for boost to build between every shift. I would lose a lot of time and make lots of smoke when trying to drive quickly. If I used a larger spring to keep the manifold pressure to about 10-12psi on shifts, the turbo would bark even if the valve opened. Frustrating to say the least.



Anyway, I pulled the valve last week, and I've learned to drive around the SPS66 so it does not bark. What a difference! I like driving the truck a lot more now. Between taking off the BOV, installing a Smarty, and this weekend a SPS62 my truck should be very responsive around town. I can't wait!



Summary-



If you have a manual trans, don't get one. If you have an auto and want to protect your turbo when you back off the throttle, go ahead and do it. At least with an auto you won't have a boost leak (if any) until your race is over.



Perhaps others have had better experiences, but this is mine. I'm sending everything back to BD so they can evaluate and give me some advice. I'm willing to re-install if they diagnose the problem.

 

[CStraface]

CStraface, That silverbullet rocks !!, From my experience It will not stop pulling on top end if you have the fuel to give it !!





So how do you like you full billet goerends trans?

Love my transmission, just put 1800 miles on it a week after it was in the truck. Dave is hard to get a hold of, but he is a man of his word... ya just got to trust him.



As far as my bark, I think I just gotta wait until I get my TST fixed or until I buy a smarty and some injectors so I can make it happy agian. It's like a dog... it barks at ya when it doesn't have enough food to eat.

 

[JVolpe]

I have been turbo barking for over a year now. I knew it would not really hurt the II SPS66 (Or so I have been told), but it was irritating barking it every time I got on the freeway and just normal driving. And my boost gauge was having heck with boucing from 40psi to 0psi and back couple times quickly. I think the needle is a little loose on the shaft now.



I had Michael at Hot Rod Diesels order and install the BD BOV. He spent at least enough time tuning it in it seems. So far it has eliminated the barking altogether, even through some hard WOT shifts with Smarty/TST stack.



I don't know how it will do at the track with full power and hard boost launches, but for now I am glad I had it installed. I wish I could have used the money on more performance mods, but only spend minute totals on the track in a month as compared to daily driving.



Hope I do not have some of the issues posted above.