HKS SSQ = Compressor Surge?

[Bryan.Mckinlay]

Hmm... Any Thought on this?

YOu know when kids come up to you when they find out you have a turbo charged car and ask "DO YOU HAVE A BOV!!" and when you answer "yes" they always ask " Is it the WHOOSSHHHH sound or the CHE CHE CHE CHE CHE CHE sound?

I've just mainly noticed that sound coming from cars ie: supra, rx-7, Sylvia running the SSQ seem to flutter alot, and assuming this is the "typical sound" from the HKS wouldnt this mean the HKS SSQ fails to save the turbo from compressor surge?

Do anyone running the SSQ experience surging at all? is it a design flaw from HKS or is it strictly user error (shimming in wrong, tightening the valve too much)

Maybe I'm just stoned? Maybe this is already a known fact and I live under a rock?

 

[spdjnke]

Flutter on a BOV is normal, it's mainly caused by "short" bursts of low pressure, just enough for the BOV to open and close. As for a design flaw, well HKS is the pioneer in BOV's, I have been running with them for over 10 years with NO problems. NOW I really hope you didn't try and adjust the screw in the back of the 1st GEN ssqv, cuz if you did?? your in a world of trouble coming, cuz I spoke to a HKS engineer years back and they all said and I quote " we should have NEVER put the damn screw in the back of the hat", cuz it has idle compensators and once the screw has been turned after factory setting, it will NEVER run right. One reason why the new models don't have any adjustability.

GOOD LUCK.

 

[skeeter149]

i wasnt getting any surge with my ssqv ver 2 but now it is lost in the mail so i cant use it.

 

[808MP5]

BOVs shouldn't flutter at all...
just watch a few videos on you tube... they are supposed to go whooosh...

if your getting fluttering sounds at boost levels higher then 4-5psi then something is probably wrong...

i get a little bit of flutter but thats at very low boost (less than 2psi)
i used to get a lot of flutter until i got a vacuum block and hooked up my BOV to a dedicated vacuum source

 

[Bryan.Mckinlay]

Thats exactly what I thought, thanks for the clarification.

spdjnke - I dont own a SSQV I was just clarifying before I bought one

 

[hectik1]

Most Supras, etc run Tial BOVs. Those BOVs make the fluttering sound.

 

[MS3Zoom24]

i thought the HKS makes the flutter sound because of 2 things, 1. the fast response to opening and closing, and 2. because there are basicaly 2 valves in 1 one for low pressure and the other for high pressure. there is initially a small inner valve that opens during low pressure and when under high pressure both valves open and after the pressure bleeds out the high pressure vavle closes, followedby the low pressure valve, hence CHE CHE

heres a link to the diagram http://www.***************/HKS_SSQV_Universal_BOV_p/71004-ak001.htm

 

[MS3Zoom24]

Sorry about that

http: //www. street unit . com / HKS _S SQV_U niversal_BO V_p/71004-ak001.htm

 

[spdjnke]

Thats exactly what I thought, thanks for the clarification.

spdjnke - I dont own a SSQV I was just clarifying before I bought one

Put it this way as much as people discuss the different noises bov or bpv makes is this: flutter is normal on low psi, surge is bad, it makes a sound like a turkey gobble and that's spring or release pressure way to HIGH. If u r consider buying a bov/bpv go with a pull type it's honestly the most reliable.

 

[240ka]

compressor surge=BAD. doesnt matter what type of car it is.

"A compressor stall is a situation of abnormal airflow resulting from a stall of the aerofoils within the compressor. Stall is found in dynamic compressors, particularly axial compressors, as used in jet engines and turbocharged reciprocating engines.

Compressor stalls result in a loss of compressor performance, which can vary in severity from a momentary engine power drop (occurring so quickly it is barely registered on engine instruments) to a complete loss of compression (compressor surge) necessitating a reduction in the fuel flow to the engine."

thats why when i get a new bpv im going with a Synapse Synchronic bov from synapse engineering

flutter may be normal on some cars like supras but its not good. they need a better BOV