Compressor Surge w/ BOV?
Compressor Surge w/ BOV? Hello gents, I took a buddy of mine for a ride in my turbo 02 Camaro and while we were goofing around he said it sounded like I was getting compressor surge when I lifted off the gas.
It was definitely more noticeable since at the time I wasn't running an air filter because I was in Mexico. ; )
I thought this was odd since I'm using a Tial BOV after the I/C and its plumbed correctly.
Is it possible to still get some compressor surge with the use of a BOV or is it just the BOV fluttering?
Is this something I should be concerned with?
Any input would be greatly appreciated!
It was definitely more noticeable since at the time I wasn't running an air filter because I was in Mexico. ; )
I thought this was odd since I'm using a Tial BOV after the I/C and its plumbed correctly.
Is it possible to still get some compressor surge with the use of a BOV or is it just the BOV fluttering?
Is this something I should be concerned with?
Any input would be greatly appreciated!
How do you adjust a BOV?
Its a Tial 40mm BV50 BOV btw, different spring and how do you know which spring to use?
Edit:
I never knew this was even something you had to do!
So according to the chart below its based off manifold vacuum, so if the spring it too stiff it won't open under vacuum?
http://www.tialsport.com/documents/w3_tial_qqr_sp.pdf
Its a Tial 40mm BV50 BOV btw, different spring and how do you know which spring to use?
Edit:
I never knew this was even something you had to do!
So according to the chart below its based off manifold vacuum, so if the spring it too stiff it won't open under vacuum?
http://www.tialsport.com/documents/w3_tial_qqr_sp.pdf
Edit:
I never knew this was even something you had to do!
So according to the chart below its based off manifold vacuum, so if the spring it too stiff it won't open under vacuum?
http://www.tialsport.com/documents/w3_tial_qqr_sp.pdf
Joined: Aug 2007
Posts: 24,241
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From: Turnin' Wrenches Infractions: 005
This will give you an idea, keep in mind though that you can only shim a spring so much before it coilbinds and wont open fully anymore, in that case you need a stiffer spring. If its too stiff and wont open under proper vacuum you can trim coils off to soften it up till it gets right.
Quick update gents, so I pulled the BOV out for inspection and it was completely froze shut.
I laid it on the ground and with a hammer handle and all my body weight pushing on the valve I couldn't open it.
I popped it with another hammer and it finally opened, I hate to say but it has probably been this way the entire time its been on the car smh.
I opened it up and it was very clean inside and there was no corrosion or anything so I think the o-ring seal was just really stuck which isn't too surprising since it was purchased as a used part.
I lubed the valve guide and o-ring, cleaned it up really good and checked that it had the correct white spring and reinstalled it.
The valve is closed during idle and when throttle is applied and released it opens and then closes so I think I'm in good shape.
Thanks for the help 01ssreda4 and sbcgenII!!
I laid it on the ground and with a hammer handle and all my body weight pushing on the valve I couldn't open it.
I popped it with another hammer and it finally opened, I hate to say but it has probably been this way the entire time its been on the car smh.
I opened it up and it was very clean inside and there was no corrosion or anything so I think the o-ring seal was just really stuck which isn't too surprising since it was purchased as a used part.
I lubed the valve guide and o-ring, cleaned it up really good and checked that it had the correct white spring and reinstalled it.
The valve is closed during idle and when throttle is applied and released it opens and then closes so I think I'm in good shape.
Thanks for the help 01ssreda4 and sbcgenII!!
