apexi bov...compressor surge

doom26464

doom26464

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Mar 31, 2005
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ok after hearing the compressor surge sound in the other video thats exactly what my car sounds like. It makes a loud fluttering noise that last over 3 seconds(gets quiter near the end). Now I checked the the line too it and it not kinked or anything...follwed it it goes threw the metal silver piece infront of the 3000 pipe and come out the other side and then seems to go under the intake mainfold. I couldn't really see where it goes as it was dark out. Can anyone post me a pic of where its properly sopuse to be hooked up to?? Mabye i connected it wrong after my rebuild...I will check it in the day light tommrow right after work.

Also there is a screw on top of my bov and I havn't fiddle with it yet but i remeber hearing something like it adjust the response of your bov?? could this mabye be the probleme\?? i will have to fidle with it as well.

Also for the record its a 60-1 trim ct-26. I really want this problem fixed as i don't want to kill the turbo :cry:
 
doom26464

doom26464

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since i got no replies i Tried figuring out things for my self. I hooked the line that goes to my bov to my boost gauge and its getting good vaccum and awesome response. So i connected it back up to the bov. Now the losened the nut on the top of the bov. but i don't understand how it works? I put it on but only finger tight. took it for a spin and its still getting compressor surge. Now if i take it over 5psi it will vent like its sopuses to. but anything from 1-5psi all i get is that stupid compressor noise choooochooochoooo. Mabye I should just take the nut right off??? what about running the stock bov with this bov at the same time???


plz some one help me i need answers for i fear for my turbos life!:cry:

EDIT: would it hurt to take the apexi bov apart?? or is it all sealed and stuff and it be better off not to take it apart??
 
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doom26464

doom26464

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took the nut right off still no difference. it almsot always goes off at 5psi or higher but anything below is compressor surge. Running out of ideas probaly going to take it apart. I heard you can oil/grease up the shaft not sure what that is but i will take pics of it when i take it apart tommrow.


kind of feal like im giving a spech in a empty room.... Im hoping some one will jump in eventually with some advice or help
 
GC89

GC89

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you dont want your bov to be venting while under boost, you want it to vent as soon as the throttle body is closed. Have you checked for shaft play on your turbo? It shouldnt make that noise while boosting:nono:
 
doom26464

doom26464

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GC89;945539 said:
you dont want your bov to be venting while under boost, you want it to vent as soon as the throttle body is closed. Have you checked for shaft play on your turbo? It shouldnt make that noise while boosting:nono:
Click to expand...

what??? did you read anything i wrote? I know the bov is not sopuse to be venting under load It makes this noise when i shift(let the off the throttle) im not a total dumbass on bov I understand the basics of them.

i havn't checked the shaft play yet on turbo but probaly will this weekend.
 
7MGTEsup

7MGTEsup

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Jun 14, 2005
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I'm not familier with the APEX BOV but isn,t the nut your refering to just the lock nut for the adjuster? If so you need to turn the adjuster not just loosen the nut. Alot of larger BOV's if not adjusted correctly will surge at low boost.
 
MK3Brent

MK3Brent

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Aug 1, 2005
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The nut is just a locking nut... the bolt it's on can be rotated left and right. (Left loosens the spring, right tightens the spring.)

Should be a hex bolt, or allen-head bolt.


hth.
 
GC89

GC89

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I thought you said anything over 5psi it vents, which would mean something is very wrong, my bad. No need to get worked up we are trying to help. How loud is it because a little surging at partial boost is something you might have to just deal with. You can adjust it to get the best results but my in experience with aftermarket bovs sometimes you have to compromise a little.
 
doom26464

doom26464

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GC89;945814 said:
I thought you said anything over 5psi it vents, which would mean something is very wrong, my bad. No need to get worked up we are trying to help. How loud is it because a little surging at partial boost is something you might have to just deal with. You can adjust it to get the best results but my in experience with aftermarket bovs sometimes you have to compromise a little.
Click to expand...

didn't mean to come off as harsh sorry lol


And IJ Yah I have been guilty of boosting but only a few times. I Don't see how its going to hurt the headgasket? I will retorque it this weekend like I said(is there a write up for this somewhere?). Though i had arp bolts and a stock head gasket before and ran 14psi on the stock ct-26 for a year and half without a retorque and it was fine...
 
I

IJ.

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Brett: You only get one chance to seal up a gasket...

If the tq is a bit uneven and the head lifts slightly under boost coolant gets between the gasket and the surface you're trying to seal.

Eventually when you do get on boost hard that's where it will fail...

It's up to you it's your motor I'm just trying to give you some advice so we don't have to watch you cry and slash your wrists in 2>3 months when it's BHG and RK'd.
 
doom26464

doom26464

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IJ.;946015 said:
Brett: You only get one chance to seal up a gasket...

If the tq is a bit uneven and the head lifts slightly under boost coolant gets between the gasket and the surface you're trying to seal.

Eventually when you do get on boost hard that's where it will fail...

It's up to you it's your motor I'm just trying to give you some advice so we don't have to watch you cry and slash your wrists in 2>3 months when it's BHG and RK'd.
Click to expand...

yah I parked the car and am not touching it till the weekend for now. Going to do the retorque on it this weekend. as well as flush the oil out
 
doom26464

doom26464

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IJ.;946085 said:
You can keep driving it just keep it out of boost is all!

More heat cycles the better.
Click to expand...

but if I drive it I will be tempted to floor it hahaha

no I parked it becauses one of my coolant hoses had a crack in it and started blowing coolant everywhere so i need to fix that before anything and im sick of freezing my hands off so i will wait till the weekend. I had probaly seen 6-7 heat cycle already so it should be good for a re-troque
 
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