Forge Motorsport BPV Review.
#54
They offer a kit, but unless you really wear out the piston just grease.
Guide to how:
http://www.forgemotorsport.co.uk/valve_service.pdf
Link to the valve rebuild:
Forge Motorsport | Alloy Fabrication
gdubs - I dunno if you've talked to Forge about selling this bpv for the lnf in the US? I emailed them informing them of the fitment and that you got it working. So hopefully they test it and post it on their site as a usable part for the cobalt, hrr etc.
Last edited by northvibe; 12-09-2010 at 10:41 AM.
#55
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Yup I spoke with mike at forge motorsport us division. Problem is their website is based out of the UK. So updates are very slow. He said he was going to try and get on the site and answer any questions
#56
Dammit I can't watch the video because I'm at work but I havent seen people this excited about a product for the LNF since the K&N SRI was releassed. What's all the excitement about?!?! Does it simply reduce surge issues, does it imporve sound, what is it?
Anyways my 2 cents, Forge makes great stuff I had a Forge BOV on my Talon back in the day and you could tell just by looking at the piece it was quality.
Anyways my 2 cents, Forge makes great stuff I had a Forge BOV on my Talon back in the day and you could tell just by looking at the piece it was quality.
#57
hey you never answered my question about the sound...is it like a metallic ping? like 2 swords clashing or mario getting a coin?
#60
#63
that makes me sad, but I'll still get it. The plastic one on the ms3 was known to have a slight leak and the forge would hold boost much better and to the end. Its a good upgrade like you stated, specially if people stay on the stock turbo. I'll have to get me onez.
#64
Can you tell me why? The stock BPV not only has the spring to hold it but under boost, the vacuum line is now providing ADDED pressure (the boost itself) equal to the boost *on the other side*. So you have the spring pressure (8lbs) PLUS the boost pushing againt the valve. It's only going to fail to hold if it's cracked. Did you see the condition of the OP's valve..PRISTINE. Not knocking this mod..very nice..go for it if you like. But the stock BPV works fine.
#65
the forge would hold boost much better and to the end.
Can you tell me why? The stock BPV not only has the spring to hold it but under boost, the vacuum line is now providing ADDED pressure (the boost itself) equal to the boost *on the other side*. So you have the spring pressure (8lbs) PLUS the boost pushing againt the valve. It's only going to fail to hold if it's cracked. Did you see the condition of the OP's valve..PRISTINE. Not knocking this mod..very nice..go for it if you like. But the stock BPV works fine.
Can you tell me why? The stock BPV not only has the spring to hold it but under boost, the vacuum line is now providing ADDED pressure (the boost itself) equal to the boost *on the other side*. So you have the spring pressure (8lbs) PLUS the boost pushing againt the valve. It's only going to fail to hold if it's cracked. Did you see the condition of the OP's valve..PRISTINE. Not knocking this mod..very nice..go for it if you like. But the stock BPV works fine.
#66
The stock BPV diaphram is prone to cracking, collapsing under high boost sometimes and not seating properly (sticking open) which causes boost leaks. If I ever have an issue with mine (none that I know of yet) I will switch over that is if I am still on the stock turbo then
#67
Sticking open?? The force of the spring would normally insure that doesn't happen. In fact I think it's more likely for the Forge to stick open with the stock spring. I guess anything's possible. I'm just saying there's a lot of *mis-information* out there.
Almost certain to switch if I ever have a problem. If it ain't broke......you know the rest.
Almost certain to switch if I ever have a problem. If it ain't broke......you know the rest.
#69
The stock BPV diaphram is prone to cracking, collapsing under high boost sometimes and not seating properly (sticking open) which causes boost leaks. If I ever have an issue with mine (none that I know of yet) I will switch over that is if I am still on the stock turbo then
#70
Asisde from what I just posted...All of the pics I've seen of the STOCK BPV..around 4 so far... (which were replaced with the Forge) have shown a pristine valve. I know they can crack..I saw a pic from a foreign car (using same valve, but different application) that was cracked.
#71
This is another diaphragm style bpv. As you can see, it can crack or tear. It can also fault in that half of it will bend and the other half will remain in its resting position haltering proper function.
I agree, if it isn't broken, don't fix it, but the other turbocharged vehicles being produced today have since gotten the memo and switched to a pure piston style diverter valve. Audi, after 7 revisions of a diaphragm style, has now switched to the piston valve.
Forge makes products that arent just good quality, they are reliable. Look under the hood of any Pike's peak climber and youll see a forge. Look under any of the club level racers hoods and your pretty much guranteed to see forge parts. They dont just work, their trusted. I endorse forge because I have never had a forge unit fail on me or any of my cars, or any of the teams cars (except the plastic solenoids... but they cant be held responsible for that)
#72
The pilot shaft on my diaphragm seemed to stick in the cap occaisionally; I tweaked it with a little sandpaper and have no issues. I understand Ronn's position however the op's problems are gone and Term pointed out other "weak links". A couple of other things-Dejon offers a heavier spring (ostensibly for a reason); the new LNF's have a metal bpv cap (ditto); then there's the fact that GM wants like $75 for the rebuild kit. Makes me curious if the Solstice/Sky community have had similar issues (especially higher mileage cars) or if they have experience with the Forge piece.
#74
the forge would hold boost much better and to the end.
Can you tell me why? The stock BPV not only has the spring to hold it but under boost, the vacuum line is now providing ADDED pressure (the boost itself) equal to the boost *on the other side*. So you have the spring pressure (8lbs) PLUS the boost pushing againt the valve. It's only going to fail to hold if it's cracked. Did you see the condition of the OP's valve..PRISTINE. Not knocking this mod..very nice..go for it if you like. But the stock BPV works fine.
Can you tell me why? The stock BPV not only has the spring to hold it but under boost, the vacuum line is now providing ADDED pressure (the boost itself) equal to the boost *on the other side*. So you have the spring pressure (8lbs) PLUS the boost pushing againt the valve. It's only going to fail to hold if it's cracked. Did you see the condition of the OP's valve..PRISTINE. Not knocking this mod..very nice..go for it if you like. But the stock BPV works fine.