BOV'S

TURBOLVR said:
Yes, its the short time that the drive is radically lower than boost that the boost air is trying to stop the compressor wheel that used to shear shafts off. The newer "fat shaft" S300 type turbos handle that abuse quite well but a gain is to be had esp. in a stick truck between shifts when the throttle/drive press. drops boost is vented the turbo doesn't spool down and back up every shift, it can stay fairly high rpm wise. thus aiding in response into the next gear. If you've ever had a "scary" moment where you had to jump off the pedal and back on it, the forces on the turbo shaft are severe to say the least.:blahblah1:
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When is the drive radically lower than the boost? Is it so fast I can't see it on my side by side boost/drive gauges?
 
maybe YOU have the "perfect" set up or your guages react slowly, but most trucks when cutting throttle at higher boost levels "bark" the turbo(s).
 
No, it definately barks, quite loudly! I guess that would directly relate to the low drive pressure and high boost I have to see in order to get that bark? That makes more sense when you put it like that.
 
all you need is a quality BOV and the vacuum line removed and replaced with a line from the ex. manifold. DONE.
 
sweet, im going to pick one up this weekend. now I just need to find someone with a tig welder.:bang
 
TURBOLVR said:
all you need is a quality BOV and the vacuum line removed and replaced with a line from the ex. manifold. DONE.
Click to expand...

I agree, that is how ours works. Similar to the ebay one shown except 56mm, comes with springs to help dial it in and instead of just a V-band flange on the bottom we have the connector tube notched for 3" so your ready to weld it in and go. Just coil up a line off the drive side so it is cooled a little before it hits the valve and your set. Oh and its just a few bucks more.

B18B1LS1, that instant when those pressure's are unbalanced is all your looking to work with and with the naked eye its hard to actually see. Its brief but you can see it on a data logger.

MD-LUCKY, I'll pm you some info.
 
Gotcha. I'm going to have to give it a whirl now. I just need to find a loud duck call for it....
 
Well, I think I'm willing to give this a shot.

I'm interested to see how it works. I can always add a pressure releif valve in its place if it doesn't work.. But, it sounds like many people have them and are happy with the setup.
 
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