Forge BPV VTA
01-18-2013, 07:00 PM
#1
Forge BPV VTA
I just installed the Forge VTA BPV and was wondering what spring I should use? currently a green one and they sent me a yellow one, the green one is in there but it seems to take a second to blow off and I get minor compressor surge. I love the sound but the compressor surge is no bueno
Last edited by user 72239; 01-19-2013 at 12:38 AM.
02-27-2013, 09:26 PM
#9
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Also FYI there is no "opening!" It opens all around the top. This bypass valve you can install anyway you want, since its VTA the openings are in a circle on top of the bypass.
My guess is the spring is too strong even the green. I don't know though.
My guess is the spring is too strong even the green. I don't know though.
02-27-2013, 10:48 PM
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I've been talking with Angel at Forge about this issue. I'm gonna see what the issue is.
Yeah the Forge VTA doesn't have the same mold (if thats the right word) as the regular bypass valve.
Yeah the Forge VTA doesn't have the same mold (if thats the right word) as the regular bypass valve.
02-28-2013, 09:52 AM
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hmm... maybe the bpv is not openning all the way?
try pushing it with your hand open. see why it's so hard to open... should not be that hard to open. should be a firm squeeze to open the bov. not sure how the forge vta bpv works tho...
try pushing it with your hand open. see why it's so hard to open... should not be that hard to open. should be a firm squeeze to open the bov. not sure how the forge vta bpv works tho...
02-28-2013, 09:58 AM
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right on. if it's a piston you should try and be able to push the piston open. that's what i do for fun with the cobalt when the car is off lol... it's under vaccum when i turn the car off. and sometimes i like to open the piston and feel the air come out. lol...
02-28-2013, 10:03 AM
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Anyway, the openings on the VTA version is on top as you can see in the image. Everything under the flange piece is solid. There's no opening underneath the flange piece, or the "cylinder" piece. Well minus the very very bottom of it.
02-28-2013, 10:09 AM
#21
I'm getting it, now. Super frustrating. Mine however only happens at 10psi or higher. Anything under that it's a smooth psssssss. Nice sound.
Anyway, the openings on the VTA version is on top as you can see in the image. Everything under the flange piece is solid. There's no opening underneath the flange piece, or the "cylinder" piece. Well minus the very very bottom of it.
Anyway, the openings on the VTA version is on top as you can see in the image. Everything under the flange piece is solid. There's no opening underneath the flange piece, or the "cylinder" piece. Well minus the very very bottom of it.
02-28-2013, 10:13 AM
#22
Just as an fyi the spring cannot be installed upside down. Its are compression style spring and there is no up or down. The only different would be a right or left hand cut which on compression springs doesn't matter. My guess is the spring is too strong or the pistons are not greased well and should be lubed
The only way the spring would be upside down is if the diameter on one end is different from the other but at that rate usually the seats will only fit the side. Being that guys can flip them around means there's no up or down.
The only way the spring would be upside down is if the diameter on one end is different from the other but at that rate usually the seats will only fit the side. Being that guys can flip them around means there's no up or down.
Last edited by Omiotek; 02-28-2013 at 10:33 AM.
02-28-2013, 10:43 AM
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Okay I'll lube it up. The only greese I have is Valvoline Synthetic Greese, I did lube up the o-rings though.
Anyway here's my surge issue. What's weird is it wasn't this way a couple days ago. It seem to have developed this. Perhaps it is a lube issue.
**Edit**
The surge doesn't happen under 5 PSI, so when I drive normally, I don't hear the surge. It's a nice clean blow off.
Anyway here's my surge issue. What's weird is it wasn't this way a couple days ago. It seem to have developed this. Perhaps it is a lube issue.
**Edit**
The surge doesn't happen under 5 PSI, so when I drive normally, I don't hear the surge. It's a nice clean blow off.
Last edited by vahdyx; 02-28-2013 at 11:00 AM.
02-28-2013, 12:04 PM
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Okay I'll lube it up. The only greese I have is Valvoline Synthetic Greese, I did lube up the o-rings though.
Anyway here's my surge issue. What's weird is it wasn't this way a couple days ago. It seem to have developed this. Perhaps it is a lube issue.
**Edit**
The surge doesn't happen under 5 PSI, so when I drive normally, I don't hear the surge. It's a nice clean blow off.
Forge Motorsports VTA Bypass Valve - YouTube
Anyway here's my surge issue. What's weird is it wasn't this way a couple days ago. It seem to have developed this. Perhaps it is a lube issue.
**Edit**
The surge doesn't happen under 5 PSI, so when I drive normally, I don't hear the surge. It's a nice clean blow off.
Forge Motorsports VTA Bypass Valve - YouTube