which 1 better HKS type 2 racing bov or Greddy/Type R bov

[wira3319]

i use turbosmart(FG-BOV-003SS) on my GSR 1.8T. till now dun't have a problem, really like they bov heavy sound.

 

[Gtiiiii_01]

so does it mean that GFB bov just for street using? actually i'm attracted with the the design n colour only . i'm referring to the stealh fx model...

 

[Ivan54]

the greddy type-r is for sure to surge , the turbosmart is also high boost application
go get a synapse bov :P , it will open up even at 0.1bar , and it will still close shut at 3bar without leak :P , eliminates compressor surge after i changed to it, it won sema awards & etc , also have started to be used on drag cars , feel free to view the videos at youtube , bt warning, its not suitable for MAF fitted cars, so is the Turbosmart , both turbosmart and synapse will leak at idle , if u r having a MAF fitted car, "stall"

http://www.youtube.com/watch?v=M2--IIMSa9A&feature=channel_page

hi bro i am currently using HKS racing bov type II .as mentioned by many others, during low boost applications its having a bad time opening up.
as for the synapse bov and ewg where can i purchase it from ? anywhere locally or i have to order it online?

 

[jinkl]

hi bro i am currently using HKS racing bov type II .as mentioned by many others, during low boost applications its having a bad time opening up.
as for the synapse bov and ewg where can i purchase it from ? anywhere locally or i have to order it online?

dont la , you already have the HKS , u may opt for less stiffer spring , u can get one from any hyraulic shop , then it will ease its opening

 

[Gtiiiii_01]

Thanks jinkl for a really good explanation. it helps a lot.

 

[goo_61t]

there are a few reasons why i would use a synapse, ok let me write my karangan kakakakka

first , it has something similar to the HKS type-II & ssqv , the more boost, the more secured the BOV will be , because boost pressure will pressurize inside the bov which will press the valve against the bov, diffrence between HKS and the Synapse ? , HKS uses a diaphragm , while synapses uses o-rings

another diffrence between a HKS and a Synapse
both are pull type BOV , HKS uses only one single nipple or vacuum source to pull open the valve when u want to open up. While Synapse was designed a diffrent way , it uses two vacuum source to pull the piston and one boost source to help push it , so all together 3 nipples , this wht makes the BOV very very responsive , that is why it opens up at low boost and also high boost , and it closes shut to no leak when boost rises.

http://www.rhdjapan.com/images/product/51919/Image/Normal/Image.jpg

the left side is somehow wht the HKS looks like but lesser one nipple , as you can see there is a spring that pushes the valve down , and a vacuum source on top to suck up the air and open the valve when u let go your throthle

wht the synapse has done is that it has 3 nipples , see right side pic, when boost hits in , it doesnt let the piston move up or down , because both side are pressurised , it has two niples pushing the bov down and only one nipple pushing the bov up , and there is a spring pushing the valve down , making it not to leak. When you lift your throthle , the top right nipple will get vacuum source , the left middle one will also get vacuum source , the bottom nipple will get boost source from intercooler piping, causing the bov to open up freely :)

ready to see greddy design ?

the greddy bov's have a diaphram , it uses a spring to push the valve down and also a vacuum source that will push the valve down on boost and also pull the valve up when u let go your throthle , wht is the downfall of this design is that , boost pressure builds below the valve
unlike the HKS & Synapse , they build boost inside the bov , greddy pushes the valve from down , so if you run high boost and the spring cant support, the BOV will leak. What happens if you tighten the BOV nut above ? yes now it will stand high boost , but it will have a diffrent problem , it will surge like a horse at low boost because its too stiff for low boost

but ahaks , there is an alternative way for the greddy bov , you may tune or help the bov to open up at low boost , that is by fitting a BOOST source from intercooler piping to the down nipple of the greddy BOV. But then again, the BOV easily leaks when u run high boost cos the down nipples makes the valve to open up more easily. The down nipple is recommended more to cars that run very low boost and is unable to open the bov even after loosening the spring tension.

conclusion : why i chose synapse, no worries about diapfram , Greddy Mutiara motorsports does not sell diapfram for the type-s or type-r , u can buy online but it cost bout RM300 just for the diapfram , im not sure bout HKS's , i have a few frens running the greddy, all have torn their diapframs, nothing can be done unless u buy one new diapfram or close one eye , why i dint like the HKS Type-II , its because its too stiff for daily drive application, its sure to surge at low boost , but withstand high boost . Why i dint like the Tial or Turbosmart ? cos if your setup has changed , cams changed, vacuum readings start to differ , you need a spring change inside , i havent got a change to open up a Tial or Turbosmart, thus i guess SDF should give better reviews on them ,
and the wonderfull synapse, you only need rm1 to change a o-ring, it has about 3-4 o-rings which u can purchase locally , thats it :P , bt err if your car runs on MAF , u need to buy some gadgets for it to work properly & recirculate the BOV :)

hehehehehehe, happy boosting , motorsportttzzzz

I'll have to disagree with JIN regarding type-r blow off valve.
"greddy pushes the valve from down , so if you run high boost and the spring cant support, the BOV will leak."
yess bosst build up n it will push the valve up in theory,but as boost build up below it also pressurized in side the blow off itself through the nipple.So there will be equal amount of boost on both side so the valve wont leak open at any amount of boost given.Did not give me any problem running it in my car.Even at low boost it perform well. I set it to the lowest tension spring rate. Me runing compressor housing with anti surge ports kekekekekekee...so no problemo.
Regardless of all arguments,any type of blow off has it's own pros and cons.Not everything is perfect in design. Yeah synapse might be a good blow off but in terms of quality control,it's very poor. A friend of mine once had problem with synapse,it wont open at any given amount of boost. Still he change it to type-r afterwards,then happens to be the synapse has a problem with it's o-ring, purchase it new but have to change the o-ring mehhh..kanina..kekekekekeke..
i think he know who he is laaa kekekeekeke..

 

[jinkl]

I'll have to disagree with JIN regarding type-r blow off valve.
"greddy pushes the valve from down , so if you run high boost and the spring cant support, the BOV will leak."
yess bosst build up n it will push the valve up in theory,but as boost build up below it also pressurized in side the blow off itself through the nipple.So there will be equal amount of boost on both side so the valve wont leak open at any amount of boost given.Did not give me any problem running it in my car.Even at low boost it perform well. I set it to the lowest tension spring rate. Me runing compressor housing with anti surge ports kekekekekekee...so no problemo.
Regardless of all arguments,any type of blow off has it's own pros and cons.Not everything is perfect in design. Yeah synapse might be a good blow off but in terms of quality control,it's very poor. A friend of mine once had problem with synapse,it wont open at any given amount of boost. Still he change it to type-r afterwards,then happens to be the synapse has a problem with it's o-ring, purchase it new but have to change the o-ring mehhh..kanina..kekekekekeke..
i think he know who he is laaa kekekeekeke..

rolls on the floor laughing lolx

 

[maskulinB8]

there are a few reasons why i would use a synapse, ok let me write my karangan kakakakka

first , it has something similar to the HKS type-II & ssqv , the more boost, the more secured the BOV will be , because boost pressure will pressurize inside the bov which will press the valve against the bov, diffrence between HKS and the Synapse ? , HKS uses a diaphragm , while synapses uses o-rings

another diffrence between a HKS and a Synapse
both are pull type BOV , HKS uses only one single nipple or vacuum source to pull open the valve when u want to open up. While Synapse was designed a diffrent way , it uses two vacuum source to pull the piston and one boost source to help push it , so all together 3 nipples , this wht makes the BOV very very responsive , that is why it opens up at low boost and also high boost , and it closes shut to no leak when boost rises.

http://www.rhdjapan.com/images/product/51919/Image/Normal/Image.jpg

the left side is somehow wht the HKS looks like but lesser one nipple , as you can see there is a spring that pushes the valve down , and a vacuum source on top to suck up the air and open the valve when u let go your throthle

wht the synapse has done is that it has 3 nipples , see right side pic, when boost hits in , it doesnt let the piston move up or down , because both side are pressurised , it has two niples pushing the bov down and only one nipple pushing the bov up , and there is a spring pushing the valve down , making it not to leak. When you lift your throthle , the top right nipple will get vacuum source , the left middle one will also get vacuum source , the bottom nipple will get boost source from intercooler piping, causing the bov to open up freely :)

ready to see greddy design ?

the greddy bov's have a diaphram , it uses a spring to push the valve down and also a vacuum source that will push the valve down on boost and also pull the valve up when u let go your throthle , wht is the downfall of this design is that , boost pressure builds below the valve
unlike the HKS & Synapse , they build boost inside the bov , greddy pushes the valve from down , so if you run high boost and the spring cant support, the BOV will leak. What happens if you tighten the BOV nut above ? yes now it will stand high boost , but it will have a diffrent problem , it will surge like a horse at low boost because its too stiff for low boost

but ahaks , there is an alternative way for the greddy bov , you may tune or help the bov to open up at low boost , that is by fitting a BOOST source from intercooler piping to the down nipple of the greddy BOV. But then again, the BOV easily leaks when u run high boost cos the down nipples makes the valve to open up more easily. The down nipple is recommended more to cars that run very low boost and is unable to open the bov even after loosening the spring tension.

conclusion : why i chose synapse, no worries about diapfram , Greddy Mutiara motorsports does not sell diapfram for the type-s or type-r , u can buy online but it cost bout RM300 just for the diapfram , im not sure bout HKS's , i have a few frens running the greddy, all have torn their diapframs, nothing can be done unless u buy one new diapfram or close one eye , why i dint like the HKS Type-II , its because its too stiff for daily drive application, its sure to surge at low boost , but withstand high boost . Why i dint like the Tial or Turbosmart ? cos if your setup has changed , cams changed, vacuum readings start to differ , you need a spring change inside , i havent got a change to open up a Tial or Turbosmart, thus i guess SDF should give better reviews on them ,
and the wonderfull synapse, you only need rm1 to change a o-ring, it has about 3-4 o-rings which u can purchase locally , thats it :P , bt err if your car runs on MAF , u need to buy some gadgets for it to work properly & recirculate the BOV :)

hehehehehehe, happy boosting , motorsportttzzzz

Knowledgeable info, good job Jin, Nice to meet u handsome boy.. hehehe

 

[jinkl]

Knowledgeable info, good job Jin, Nice to meet u handsome boy.. hehehe

eh :P b8 king 2009 :D

 

[SDF]

GREDDY Type-R good for up to X amount of boost, mine started to lift > 2.5bar... even though tightened all the way, it still lifted...

 

[goo_61t]

my type-r up to 2.7 bar no problemo still no leak

 

[SDF]

well..then mine seems to have a problem.. during dyno.. we could see the valve lifting off @ 2.7bar... ugh~

 

[goo_61t]

hehehe..perhaps the spring tension kaput, as far as i know type-r also got 2 type the low spring rate and high spring rate,supposed ur valve wont lift cause even the boost is pushing the valve at the same time the boos is also building inside the blowoff itself through the nipple,so same amount of presure will shut the valve close.Unless u have a bad diafram,then the blowoff bocor

 

[Gtiiiii_01]

hehehe..perhaps the spring tension kaput, as far as i know type-r also got 2 type the low spring rate and high spring rate,supposed ur valve wont lift cause even the boost is pushing the valve at the same time the boos is also building inside the blowoff itself through the nipple,so same amount of presure will shut the valve close.Unless u have a bad diafram,then the blowoff bocor

well in that case, if buy the type R bov here wat kind of spring rate we get?