test run and crazy noises
 

well just got done with my super-budget turbo beater, (almost) stil have to do the injectors and pop my chip in, but ya i was driving around the block with my open down pipe, and i can hear this thing spool crazy and when i build a little boost and let off, my bov seems to be working from what i can tell by the gauge, but i hear what i think is bad surging or whatever they calll that, when your turbo back spins because the bov aint doin its job. could it be the ghetto way my bov is mounted up? see the picture. yes the vac line is hooked up now

http://i114.photobucket.com/albums/n...IMG_0815sm.jpg

Re: test run and crazy noises
 

o ya and im using that fitting on the intake that usually goes to the valve cover for the bov

Re: test run and crazy noises
 

It's not the placement or the source (as long as your BOV vac line is hooked up better than in your pic)

Re: test run and crazy noises
 

the source is the same as I use and ive seen people mount the BOV in the same way, check the bov itself for piston movement

Re: test run and crazy noises
 

I hope you dont mean the one where you put the breather now

Re: test run and crazy noises
 

look at the pic and read the sentence again.....


ya its hooked up right not my first install, ill go check the piston

Re: test run and crazy noises
 

In the pic there is no line hooked up to your BOV

Re: test run and crazy noises
 

i ment if you look at the pic i think its obvious whats going on, the breather is on the valve cover, and the hole in the intake has a fitting in it.

how do i check the bov ? is there a way to test it or just shove my finger in it and try to push on the parts?

Re: test run and crazy noises
 

could a loose coupler cause this? i found one i didnt tighten, and could turn it by hand easy, but i still seen 5psi so id think the bov would function, it was on on the T by the bov

Re: test run and crazy noises
 

I see 3 fittings in your pic, 2 arnt vacume and I cant see where the 3rd one goes

Re: test run and crazy noises
 

menso! use a vaccum line on the intake manfold behind the throttle body not before it. and why are u driving around without fuelmanagement, thats an "unecessary risk"

Re: test run and crazy noises
 

i usually just go around the block once before i do the injectors n ---- to make sure everythings cool before i mess with the wiring and fuel

Re: test run and crazy noises
 

the 2 are coolant before i connected it to the turbo the other is the fitting i stuck in the stock intake for a vac line for the bov. this was my under $400 turbo plan so that might explain the junky-ness a little


so "its not placement or source" or "always after the throttle body" which is it?

Re: test run and crazy noises
 

ok, when you let off the throttlebody and close the throttle plate, this creates vacuum inside the intake manifold, not in the charge pipes, where you had the BOV hooked up too. Infact when your accelerating, the charge pipes have pressure in them from the turbo, and closing the throttle plate makes more pressure between the turbo and throttle body. If the BOVs vacuum source is located at the valve cover breather fitting on the charge pipe, it'll never open, infact the pressure will probably hold it shut harder.

Hook the vacuum line up to some vacuum source from the intake manifold and you should be good.

Re: test run and crazy noises
 

Your BOV vacuum source is the problem. Plug the barb on the intake arm and hook the BOV to a vacuum source after the throttle body, like the brake booster line or something.

Re: test run and crazy noises
 

and you should do the reverse first mang. install the electronics and make sure the car runs, then add the hardware. just a tip.

Re: test run and crazy noises
 

Y I can see the pic better now, the 2 are coolant lines the other is wrong. you need to move the one on the intake pipe to the other side of the throtle body, T off from any other "VAC" line you have there. put your finger on it, if it doesnt suck in your finger then it wrong or you need a new engine

Re: test run and crazy noises
 

ya that makes sense, but usually during test fitting manifold and pipes, stuff ends up left on, and i gota make sure shits gona fit before i make my car inoperable (if its my only car)


thanks guys ill switch the bov source to after the throttle body.