Thread: High Boost BOVs

You know, that is an interesting comment Oleg. I had the vacuum lines come off my BPV, and with it not opening at all, I had no surge - with my surge ported SC61. With my old non-ported housing, it surged hard if the BOV was even slow in opening (Tial).

Quote: Originally Posted by Sniz how much is the synapse?? i'm getting some surge w/ my forge BOV. Will have a new charge pipe /w vband setup made for me in the next month or so and want to put on a new/better BOV. i'm getting surge in 4th and 5th gear at partial throttle/WOT from lower rpm's....dont like it one bit. did not have the issue w/ the 60-1 Seen it for $220 with the Tial adapter flange. That's one thing...

Def -I've always doubted the BPV helping with boost. If its dumping in front of the compressor wheel I would really hope your intake plumbing is larger enough that the air being dumped doesn't spin up the turbo at all. Right?

Quote: Originally Posted by So Live So your saying you can technically run no BOV? If it dosnt open enough or at all youll get surge. I had a faulty diverter and had surge issues. Now i have a good one and there isnt any surge at all. And yes surge is bad. If turbine destruction is ok, then yes, you can run no BOV. BOV do not need to opens on idle or part throttle. Only short dump of air on quick throttle release under real boost. That's...

Quote: Originally Posted by Oleg Coupe Surge is turbine problem, not BOV. With right turbo and AR for your engine displacement you will not get any surge. BOV just prevent turbo from damage when you release throttle under high turbo speed. That's all BOV have to do. So your saying you can technically run no BOV? If it dosnt open enough or at all youll get surge. I had a faulty diverter and had surge issues. Now i have a good one and...

Why though? I know it's a ricer jap trend, but why have it surge?

Quote: Originally Posted by SiGmA Don't get rid of the BOV. Retarded idea. Why? I little bit of boost pressure does not slow down the turbine at all. I have a 90 mm TB, 1.7 bar of boost, 80 mm piping with a 92 cfm turbine. Besides I can always add it back in later.

What BOV are you guys running for high boost settings? eg. 1.7bar-2bar? Currently i am having issues with my BOVs. I have a HKS SSQV which is shyt and now my Greedy Type RS is giving me issues as well.. One time the RS had its valve stuck open and HKS had always have problem with stalling. I dont have much confidence in these 2 brands now and im worried it might destroy my compressor shaft if i continue running on those BOVs. I am serching...

Why dont you guys think of two instead of one big valve? I ran dual billet bypass valves, and I know of a few highish HP P-cars that run the same, and dump very well. One by the TB and the other by the turbo. Another plus to BPV vs the Tial design is that you dont need to fight the spring/vac/boost dilemma. The Tial design you have boost acting on the valve, where as the bosch style bypass valve, the boost acts upon the housing of the unit,...

how much is the synapse?? i'm getting some surge w/ my forge BOV. Will have a new charge pipe /w vband setup made for me in the next month or so and want to put on a new/better BOV. i'm getting surge in 4th and 5th gear at partial throttle/WOT from lower rpm's....dont like it one bit. did not have the issue w/ the 60-1