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Hks Ssqv Bov

Proximity Motorsport
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Proximity Motorsport Experienced

Proximity Motorsport

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Posted

Hey,

Im buying a Plazmaman Plenum and cooler piping kit so will have to get rid of standard bov. Was thinking HKS SSQV cause they dont go SSSHHHHHHH. Dont go and tell me i dont need a bov and im a make out cause i want to replace my standard one.

Now just a question. Someone i know sais their HKS SSQV BOV is leaking so they are getting rid of it... but reading this makes me wonder... can they leak, this makes me think not...

Is that correct? Is the person hearing things...

cheers

The HKS Super Sequential Blow-Off Valve (SSQV) is a dual stage pull type relief valve. Unlike other blow off valves that are push type, the SSQV will not leak under high boost conditions nor under vacuum at idle. Being of a pull type valve structure, the SSQV can not physically leak under any level of boost because boost pressure also keeps the valve closed against its seat.

The SSQV is actuated by pressure alterations only, not by the rate of pressure or vacuum in the line, which ensures a quick valve response and complete closure during idle. On typical blow-off valve designs, a large valve is utilized in order to accommodate high boost / high horsepower applications. However, these large valves tend to react slowly and require high activation pressure to open, therefore are not able to activate and prevent compressor surge at light-load conditions. On the other hand, smaller, fast reacting valves do not discharge the airflow capacity required for high horsepower applications and tend to creep open and leak as the boost pressure overpowers the spring on these push type valves.

For maximum performance, the HKS SSQV incorporates both a small primary valve for ultra quick activation, along with a larger secondary valve for additional discharge capacity. The SSQV is engineered to initially open the small primary valve at light throttle and load conditions, then sequentially opens the secondary valve for additional relief capacity under high boost and load conditions.

The SSQV is constructed of polished billet aluminium, which ensures long-term durability and visual appeal. The triple-fin discharge port design produces a powerful and unique aggressive blow-off sound along with added visual distinction.

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limpus Mentor

limpus

Posted
Posted (edited)

THe SSQVs utilize a pull type design so they don't leak on boost...however i have heard the latest model SSQVs do not have an adjustment screw so some of them have been known to leak on idle...so if you wanna get one...just stay away from the latest ones...i've never had a problem with any of the 3 SSQVs i've had on any of my previous cars...

Edited by limpus
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Proximity Motorsport Experienced

Proximity Motorsport

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my brother has an older model one and he swears its leaking.. said it drops boost badly between gears and sounds slightly different to when he got it... meh... might just get a new one. Any recommendations on cheap places to buy. Ebay has them for roughyl $300 delivred from america... they also have the $40 "genuine" ones... but whos to say the $300 one is a fake too. Not keen on ebay

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Koshi Apprentice

Koshi

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Posted

i have the new SSQV, it surges like mad between shifts at 8psi. But at earlier shift it works fine? I dont understand why it does that.

But when the car is in neutral or parked. And i rev, it will reileve at anytime you let off the gas. I dont understand why it surges when iam boosting under load

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