Branners Posted July 8, 2007 Share Posted July 8, 2007 I finally got round to sorting out the map on my car and its now happy with 1.35bar. However the BOV is less than happy to say the least and its now a weak point in the system. So, whats the best BOV to fit and has anybody got one for sale? JB Link to comment Share on other sites More sharing options...
uk-rich Posted July 8, 2007 Share Posted July 8, 2007 best bov ? depends on what noise you want, i have the hks ssqv had it for ages, never leaks (can't really due to design) and makes a good noise Link to comment Share on other sites More sharing options...
Steve Posted July 8, 2007 Share Posted July 8, 2007 I also have the HKS SSQV. Had it for 3 years. Never had a problem with it. Link to comment Share on other sites More sharing options...
grahamc Posted July 8, 2007 Share Posted July 8, 2007 I had the hks one, ad hated it, way to noisy, sounded like a bloody truck. I now the XS one I think... much better Link to comment Share on other sites More sharing options...
Nic Posted July 8, 2007 Share Posted July 8, 2007 I'd go for either a HKS SSQV or HKS Racing BOV, let me know JB if you want prices for new one. Link to comment Share on other sites More sharing options...
Guest Phillw454 Posted July 8, 2007 Share Posted July 8, 2007 I have a hks ssqv (not on a supra though). Ment to be pretty top notch and fully adjustable aswell. Dont know about the rest of you but mine is quite loud but i love it:d Link to comment Share on other sites More sharing options...
Wez Posted July 8, 2007 Share Posted July 8, 2007 You can also get a recirc kit for the HKS Link to comment Share on other sites More sharing options...
Jake Posted July 8, 2007 Share Posted July 8, 2007 best bov ? depends on what noise you want Huh? Who cares what noise it makes? I just want one that doesn't cause compressor stall. Other than that the quieter the better. Link to comment Share on other sites More sharing options...
Homer Posted July 8, 2007 Share Posted July 8, 2007 The HKS SSQV is not up to the job on my T67, many others are finding the same with them. One that has worked on other cars is the cheap XS power one (SARD copy). I'll either be trying a racing BOV (not convinced these are better), or adding a 2nd BOV. Link to comment Share on other sites More sharing options...
uk-rich Posted July 9, 2007 Share Posted July 9, 2007 Huh? Who cares what noise it makes? I just want one that doesn't cause compressor stall. Other than that the quieter the better. some people want loud, some want quiet, i consider the ssqv to be on the quiet side which suits me The HKS SSQV is not up to the job on my T67, many others are finding the same with them. One that has worked on other cars is the cheap XS power one (SARD copy). I'll either be trying a racing BOV (not convinced these are better), or adding a 2nd BOV. in what way is not up to the job mate ? leaking ? i run mine pretty hard with no probs as yet Link to comment Share on other sites More sharing options...
Class One Posted July 9, 2007 Share Posted July 9, 2007 I don't think JB is after a bov that goes whooosh, just that his stocker isn't upto the job with his single. Whatever you get JB will it need welding on? Link to comment Share on other sites More sharing options...
mikeyb10supra Posted July 9, 2007 Share Posted July 9, 2007 HKS Racing BOV as above this can handle the pressure surge a single creates, I reckon you would need two ssqv's or two blitz ones You can also get a recirc kit for the HKS Even better...think Forge do a recirc as well Link to comment Share on other sites More sharing options...
Alex Posted July 9, 2007 Share Posted July 9, 2007 I'd get an S-SQV the are less prone to failure and can be recirc'd which your UK spec should have. I had ONE on my T61 and is coped. Link to comment Share on other sites More sharing options...
Branners Posted July 9, 2007 Author Share Posted July 9, 2007 I have been offered a SARD one nice and cheap. Anybody got any experience on one of those? noise isnt the key factor here (its a single turbo..its got enough noise already), its the ability to hold up to 1.35bar without flapping about in the wind. The stock BOV thats on there has done a stirling job, but I think now the car is properly mapped its not coping properly. JB Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 9, 2007 Share Posted July 9, 2007 IMO the best BOV is the one still in its box on a shelf. i haven't run a BOV on *ANY* performance turbo engine in 15 or more years. There is a load of guff spoken about them, they were actually introduced to stop the noise of the compressor when the throttle is lifted, now they are best known for *MAKING* silly noises. No high end race turbo engine I have come across uses them, from F1 down. Link to comment Share on other sites More sharing options...
grahamc Posted July 9, 2007 Share Posted July 9, 2007 IMO the best BOV is the one still in its box on a shelf. i haven't run a BOV on *ANY* performance turbo engine in 15 or more years. There is a load of guff spoken about them, they were actually introduced to stop the noise of the compressor when the throttle is lifted, now they are best known for *MAKING* silly noises. No high end race turbo engine I have come across uses them, from F1 down. ok, so then how do you set it up so that it does not use one? I thought turbo'd cars had to have them. Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 9, 2007 Share Posted July 9, 2007 ok, so then how do you set it up so that it does not use one? I thought turbo'd cars had to have them. Blank off the 2 bigger hoses at the hard pipe stubs with proper caps and clips, blank off the small pressure / vac hose the same way. Job done. Link to comment Share on other sites More sharing options...
jevansio Posted July 9, 2007 Share Posted July 9, 2007 Chris, I thought the BOV helped prolong the lifespan of the turbo, can all turbos (ie non dbb/ceramic blades/non anti surge) take this sort of punishment??? Link to comment Share on other sites More sharing options...
Chris Wilson Posted July 9, 2007 Share Posted July 9, 2007 Yes, it's not a problem, it's no real "punishment" saver, nor any performance booster. They were purely fitted to reduce noise that most original purchasers would have found unusual and annoying. Link to comment Share on other sites More sharing options...
jevansio Posted July 9, 2007 Share Posted July 9, 2007 I much prefer the noise of the compressor chopping through the air over the tssshhh of the BOV Link to comment Share on other sites More sharing options...
jevansio Posted July 9, 2007 Share Posted July 9, 2007 BTW I use the Tial BOV, great item, on light lift-offs it doesn't open & I get that great compressor surge noise, changing gear on WOT it operates as normal, I think it's got a 7 PSI spring in, I assume that means I need to be generating more than 7 PSI of boost before it opens. Link to comment Share on other sites More sharing options...
Daston Posted July 9, 2007 Share Posted July 9, 2007 Got an oldish blitz one here that I dont use can be yours for all of £20 Link to comment Share on other sites More sharing options...
grahamc Posted July 9, 2007 Share Posted July 9, 2007 Blank off the 2 bigger hoses at the hard pipe stubs with proper caps and clips, blank off the small pressure / vac hose the same way. Job done. will that work on hybrid twin setup (UKs)? Link to comment Share on other sites More sharing options...
Alex Posted July 9, 2007 Share Posted July 9, 2007 Yes, it's not a problem, it's no real "punishment" saver, nor any performance booster. They were purely fitted to reduce noise that most original purchasers would have found unusual and annoying. Sorry but that makes me wince, I'd far rather recirc with a BOV! Link to comment Share on other sites More sharing options...
lockys96 Posted July 9, 2007 Share Posted July 9, 2007 so why do people fit external wastegates i have to wonder. Link to comment Share on other sites More sharing options...
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