1g crushed vs. uncrushed bov

[blueberry_dsm]

so heres is my question, short and sweet.....

wuts the difference between 1g crushed and uncrushed bov's? im not sure if this qualifies as a newbee question, but its something i have always wondered. thanks

 

[No_Skillz]

Crushed can hold more boost, since the top of it is literally crushed to compress the spring more.

Try a search first next time. I'm sure this has been covered.

 

[dsm-onster]

Yes. Also search for "dodge garage mod" for an alternative to crushing the bov. It holds to 30+ psi modded ike this. Properly crushing a bov entales a vacuum guage and a vacuum source so as not to overly crush it. It seams that each bov needs to be crushed different amounts to achieve the best results. The dodge garage mod is quick and makes a he!! of a ka-chee-OOWWWWW! even when recirculating.

 

[hereitcomes]

When you crush the BOV you make it handle more boost...and therefore require more boost for the BOV to open. Its just a free mod that you can do to change the sound...and to upgrade the BOV.

 

[tstkl]

Yes. Also search for "dodge garage mod" for an alternative to crushing the bov. It holds to 30+ psi modded ike this. Properly crushing a bov entales a vacuum guage and a vacuum source so as not to overly crush it. It seams that each bov needs to be crushed different amounts to achieve the best results. The dodge garage mod is quick and makes a he!! of a ka-chee-OOWWWWW! even when recirculating.

why dont you just post the link, instead of telling him to search, its obvious he doesnt like searching, .

http://www.thedodgegarage.com/turbo_bov_mod.html

 

[dsm-onster]

why dont you just post the link, instead of telling him to search, its obvious he doesnt like searching, .

http://www.thedodgegarage.com/turbo_bov_mod.html

I lost all my bookmarks when I restored my ecu recently ...

[bookmarking your link. . .]

The best thing about the dodge garage mod is that you can run the bov in the stock "mode" or in the "high pressure mode" when ever you want. This is not a major thing as any bov is better than none, but it does help ensure a long and useful turbo life.

 

[crazyboost]

dsmonster, i just installed a fmic on my 1g and soon im gonna add a water injection kit, so i will be running more psi then my uncrushed 1g bov can handle. I don't want to crush it ### i have heard that can be risky, and that this dodge mod is a better way to improve the 1g bov. I have a few questions. What is the difference between the stock and fast release mode? on the website it says
"A quick tip because this has come up already: The upper part of the B.O.V. MUST AT ALL TIMES be connected to a vacuum/boost source behind the throttle body that has full engine vacuum when the engine is at idle. The new port you just added MUST be hooked to the turbo's outlet barb or somewhere in the intercooling tubing for the BOV to work correctly in fast release mode. Or you could just leave the port open to outside air but you loose the fast release feature which is fun for scaring the hell out of honda drivers ;-)"

So does that mean the upper part of the bov should be connected to the source from my intake manifold and the new port should be hooked up somewhere between the bov and the turbo. So this would mean i would have to have someone weld a nipple (for a source) somewhere on my jpipe? let me know if my logic is correct. anyone else have experience with this mod? thank you

 

[dsm-onster]

dsmonster, i just installed a fmic on my 1g and soon im gonna add a water injection kit, so i will be running more psi then my uncrushed 1g bov can handle. I don't want to crush it ### i have heard that can be risky, and that this dodge mod is a better way to improve the 1g bov. I have a few questions. What is the difference between the stock and fast release mode? on the website it says
"A quick tip because this has come up already: The upper part of the B.O.V. MUST AT ALL TIMES be connected to a vacuum/boost source behind the throttle body that has full engine vacuum when the engine is at idle. The new port you just added MUST be hooked to the turbo's outlet barb or somewhere in the intercooling tubing for the BOV to work correctly in fast release mode. Or you could just leave the port open to outside air but you loose the fast release feature which is fun for scaring the hell out of honda drivers ;-)"

So does that mean the upper part of the bov should be connected to the source from my intake manifold and the new port should be hooked up somewhere between the bov and the turbo. So this would mean i would have to have someone weld a nipple (for a source) somewhere on my jpipe? let me know if my logic is correct. anyone else have experience with this mod? thank you

Ok. grab your 1g bov. Flip it upside down and take a look at the part that connects to the upper intercooler piping. You'll see the valve and a hole baside it. This hole allos some boost to get up to undernieth the bov vacuum chamber. When on boost there is pressure from this hole actually pushing contrary to the spring pressure (which you crush to make stronger) holding the valve shut preventing air flow out of the apparatus. When you go to vacuum in your intake manifold (close you throttle), this pressure aids in blowing open the valve as the vacuum sucks the vacuum chamber to a smaller volume and releases the spring pressure. Thus, it pops open really fast.

When you plug this hole and drill another that is open to the atmosphere, ther is little force helping the vacuum release pressure off the spring and it doesn't open as fast. It starts opening just as fast, but at a slightly slower rate... It may be slow enough to damage a turbo like not having a bov at all, but I've been running this mod for years and have had no problems.

So... First plug the hole beside the valve on the underside of the BOV, then . . .

1. For stock mode: the original vacuum port is plumbed just like stock (back to the intake mani), and the new port you are creating is plumbed to any source before the throttle body for "quick release"

2. For high boost: unplug the new port you created and let it be open to the atmosphere. Of course, plug up the vacuum line that was running to that new port.

I run it in the #2 mode all the time. I love the sound. I don't know where the originator of this mod got that the fst release is louder and will 'scare the hell out of honda drivers'. Back when I was running the stock 1g maf, running it in 'slow release', or or #2 mode, was REALLY loud, even though I was recirculated. Louder than the "fast release". ... Anyway, my BOV has never cracked under any boost I've ever run.

 

[dsm-onster]

Off topic. . . crazyboost,

What boost are you looking at running?... You have a 7 cm^2 turbine housing on your 14B, right? You mentioned in your profile that you had a "tubine housing". Is that what you're running? I really feel the 14B is corked up with the 6cm^2 housing. So it's a good thing to me to see and should make running fairly high boost on a 14b rather easy and fun.

According to the compressor map, the 14B flows 34 lbs/min (apply the correction factor to convert to kg/sec: 1.165) at 22 psi and is STILL 70% efficient. It is spinning at 150,000 rpms. This is high but not as bad as what many think it should be. Just really high.

I suspect the 6cm^2 housing makes the stock 14b "exhaust lock" (from Corky Bell's Maximum Boost). The 14B was built to spool quick on a small, low compression four cylinder. It's a pretty meaty compressor wheel for it's intended (stock 1G) horsepower output.

 

[crazyboost]

Yes i ported my turbine housing on the 14b, not sure how big it is exactly but i ported it enough so there is no seat (where the stock ring used to fit in the manifold and turbine housing). Right now im at 17 psi, but i plan on running close to 20 with the water injection. And sometime early summer im going to switch to the evo III and run around 20 21 psi. thanks for the help with the bov questions, i think i pretty much get it now. So i can weld on a nipple for a source somewhere on my uicp right? and just hook that up instead of welding one on my j-pipe.

 

[tstkl]

So this would mean i would have to have someone weld a nipple (for a source) somewhere on my jpipe? let me know if my logic is correct. anyone else have experience with this mod? thank you

drilling and tapping is an easy thing you can do by yourself.

dejon makes a relay that uses the dodge garage mod and automatically switches from stock to fast release when you go above 15psi. its 50 bucks, I have one but I havent installed it yet. need some npt nipples and a tap for my jpipe/uicp

 

[dsm-onster]

drilling and tapping is an easy thing you can do by yourself.

dejon makes a relay that uses the dodge garage mod and automatically switches from stock to fast release when you go above 15psi. its 50 bucks, I have one but I havent installed it yet. need some npt nipples and a tap for my jpipe/uicp

I forgot about Dejon's product... It is a nice thing to have... You know, one can use the stock fuel pressure solenoid to do the same thing. I did it for a while. But I liked the sound so much that I just used my fp solenoid to control my boost at 2 different levels... Nevertheless, doesn't Dejon also mod you BOV for you too?

 

[tstkl]

I forgot about Dejon's product... It is a nice thing to have... You know, one can use the stock fuel pressure solenoid to do the same thing. I did it for a while. But I liked the sound so much that I just used my fp solenoid to control my boost at 2 different levels... Nevertheless, doesn't Dejon also mod you BOV for you too?

if you send it to them...