Which By Pass Valve to use or not to use...

[DIRT11]

While my car was in Connecticut The engine had been built by VAC to be able to handle much more power. In answer to this ICS decided to put a HKS SSQ 2 Valve on my car which was of course the incorrect choice. This type of valve is a pull type of valve which is not meant by HKS to be used in a Super Charger situation as it does not let the valve breath when the car is at idle at all period.This of course is not what a super charger needs as it needs there to be a little leak for the supercharger is not on , off like a turbo charger different theory. Here is my correspondence with HKS USA about my situation. http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION003.jpg http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION002.jpg http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION001.jpg I meant to make this point earlier but , I got side tracked a bit. Just make sure who ever you chose to help you or do your work for you understands the difference between a super charger system and a turbo system. Just a Cameron had problems with his motors and the person had problems with VFE I had my own problems with my own car being in the wrong place. As well as the BPV that AA put on my car with the T-trim is not just a lot larger but , also is adjustable to how much blow by can happen while the car is at idle. The one on the left the HKS that had to be cut off , if you remember it had been glued into the flange, the one on the left the one Karl at AA installed to handle the T-Trim...http://i782.photobucket.com/albums/yy107/BMW_540i_2003/ACTIVE1.jpg Just another small but , important point to make as there is a big difference in theory between the SC'd car and the Turbo'd car just as there are no similarities between the inline six and the V-8, totally different animals. Chose your shop well and the Forced Induction forum should be the place to learn about the people that can and can not do the work as said in the earlier thread by Cameron on the poor guy loosing his motor so many times due to people not understanding the car. Hopefully with people like Cameron who hear about vendors screwing up and posting and I will continue to post up the facts so people can make an informed decision on who to use on their car.

[milKt]

So the seller is an "ON THE LIST" dealer,
but shouldn't have used that BOV on a SC vehicle (according to HKS) ??

[DIRT11]

So the seller is an "ON THE LIST" dealer,
but shouldn't have used that BOV on a SC vehicle (according to HKS) ??

That is correct.My phone calls were basically the same as the email.I just wanted to hear from the HKS USA what their thoughts were on the matter.They finally told me.

[a32guy]

You make an awful lot of threads.

[BigM62]

You make an awful lot of threads.
Get a life. The OP is trying as delicately as possible to share the problems he has encountered in his FI quest. The tragedy is the aforementioned shop has done some good work on BMW I6's.

[HellRot Roundel]

I just don't understand why you would email HKS about this. Wouldn't you take this up with the shop that installed it?

[bmw buddy]

I don't get it, you make all these threads about your car, you make all these posts, you take the time to post scanned documents, take pictures, contact manufacturers, but you don't look over your posts before posting. For gods sake, fix your posts so people can read them normally. This is how your posts should be:


While my car was in Connecticut The engine had been built by VAC to be able to handle much more power. In answer to this ICS decided to put a HKS SSQ 2 Valve on my car which was of course the incorrect choice. This type of valve is a pull type of valve which is not meant by HKS to be used in a Super Charger situation as it does not let the valve breath when the car is at idle at all period.This of course is not what a super charger needs as it needs there to be a little leak for the supercharger is not on , off like a turbo charger different theory. Here is my correspondence with HKS USA about my situation.

http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION003.jpg

http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION002.jpg

http://i230.photobucket.com/albums/ee127/D_C_NC/HKSINFORMATION001.jpg

I meant to make this point earlier but , I got side tracked a bit. Just make sure who ever you chose to help you or do your work for you understands the difference between a super charger system and a turbo system. Just a Cameron had problems with his motors and the person had problems with VFE I had my own problems with my own car being in the wrong place. As well as the BPV that AA put on my car with the T-trim is not just a lot larger but , also is adjustable to how much blow by can happen while the car is at idle. The one on the left the HKS that had to be cut off , if you remember it had been glued into the flange, the one on the left the one Karl at AA installed to handle the T-Trim...

http://i782.photobucket.com/albums/yy107/BMW_540i_2003/ACTIVE1.jpg

Just another small but , important point to make as there is a big difference in theory between the SC'd car and the Turbo'd car just as there are no similarities between the inline six and the V-8, totally different animals. Chose your shop well and the Forced Induction forum should be the place to learn about the people that can and can not do the work as said in the earlier thread by Cameron on the poor guy loosing his motor so many times due to people not understanding the car. Hopefully with people like Cameron who hear about vendors screwing up and posting and I will continue to post up the facts so people can make an informed decision on who to use on their car.

[5mall5nail5]

Dude, we get it, ICS didn't do a good job on your car.

While its a noble thread, you must realize that a CF unit doesn't do much of anything at idle. It's RPMs are similar to that of a turbocharger at idle - that said, why would a "pull type" BOV matter? Dinan doesn't use any BPV's at all on their systems until the boost is raised. I think these threads should either go in a build thread or just stop. I understand and appreciate your frustration, but what is it going to be tomorrow, they used the wrong windshield wiper blades? We hear you - we really do.

[BadBoostedBmwM3]

I didn't know about this.... SCs and BOVs

[Def]

An HKS SSQV is going to work just fine with a SC... well, at least as well as it does on a turbo. It's going to surge the compressor whenever you go to partial throttle at higher blower speeds from crossing the surge line but the SSQV won't vent(this is intended in the design, it takes large changes in vacuum to get it to pull back and vent).

Also not really sure why you didn't just take it up with ICS, as it's not like you were even asking HKS to do anything... except maybe pull them from the authorized dealer list for some reason.

[Colby Colbs]

DAMN... tough crowed here!! the real question is, has ics done anything to remedy the bad blood here??

[DIRT11]

Dude, we get it, ICS didn't do a good job on your car.

While its a noble thread, you must realize that a CF unit doesn't do much of anything at idle. It's RPMs are similar to that of a turbocharger at idle - that said, why would a "pull type" BOV matter? Dinan doesn't use any BPV's at all on their systems until the boost is raised. I think these threads should either go in a build thread or just stop. I understand and appreciate your frustration, but what is it going to be tomorrow, they used the wrong windshield wiper blades? We hear you - we really do.

My point in all of these threads is make sure people understand the capabilities of any shop before you commit your car to a project.Of course George was contacted about this after I had spoken to HKS USA .The car was at another shop 1500 miles away to get repaired from the damage done by ICS . My boost levels are just about and were 12 PSI plus actually then at ICS they were 15+PSI.A pull type BOV is not what a SC needs , it is what a turbo charger needs different animal. Wiper blades 60 $$$ , not knowing the M62 TU motor cost a bunch more than that in $$$ not to mention all the wasted time.I never claimed to be a mechanic that is why I went to HKS USA , to the source of the product , to inquire what someone was thinking in using their SSQ blow off valve on my car.They told me and I am telling what was said to me by HKS USA . As I said there is a world of difference between a V-8 and an I-6. I am glad you are hearing me with the never ending saga of me finding things done incorrectly with my car, I wish it would stop as well I promise you....


I don't get it, you make all these threads about your car, you make all these posts, you take the time to post scanned documents, take pictures, contact manufacturers, but you don't look over your posts before posting. For gods sake, fix your posts so people can read them normally. This is how your posts should be:

Thanks for the help............http://i173.photobucket.com/albums/w43/Dirt11NC/DIVERTERVALVE.jpg


DAMN... tough crowed here!! the real question is, has ics done anything to remedy the bad blood here??

No actually they made a statement in an email about correcting some of the situations but , that is it just words no actions. Even after they on this forum admitted to the poor quality of the work that I have had to do over again and again. I would not have things to post if there were not things done improperly.Off to the gym and then I go to Cary NC with my dog to see if she can have surgery on her CCL.

[pbonsalb]

For my centrifugal supercharged E36 M3, I like bypass valves that open as much as possible when not in boost. The blower is driven off the crank so it is flowing air except when the bypass valve is open. Generally, the higher the boost level, the stronger the spring, and thus the less often the valve will be open. It is a compromise.

On a blow off valve (vents to atmosphere rather than bypasses back into the intake), air filters must be used on the relief end of the valve if the spring is weak enough to allow the valve to be open during off boost driving since the valve is then two way and the engine can breathe through it. I have not fiddled with one of these valves on a centrifugal supercharged motor though I have used them on turbo motors. I am sure than any valve Vortech recommends (it sells at 3 and may recommend others) would be fine.

For whatever it is worth, I had one of those HKS valves on a turbo car and did not like it. It squealed and did not stop surge. I tried it in both blow off and recirculation. I switched to an Apexi Twin Chamber (as a blow off) and that worked much better.

I am using two Bosch -114 valves on my 450+ rwhp centrifugal supercharged S52 and they seem to work pretty well. The total valve flow is undersized based on Vortech's recommendations and would not be a good recommendation for the OP's higher power centrifugal supercharged S/M62. Probably one valve with a 1.5 inch inlet/outlet would be good for his choice.

I am not sure what to make of the "pull type" versus "push type" distinction. Anyone have any comments on that aspect of valve design and application?

[Tchao]

I am not sure what to make of the "pull type" versus "push type" distinction. Anyone have any comments on that aspect of valve design and application?

The pull type has no compromises you stated.

[EMC]

An HKS SSQV is going to work just fine with a SC... well, at least as well as it does on a turbo. It's going to surge the compressor whenever you go to partial throttle at higher blower speeds from crossing the surge line but the SSQV won't vent(this is intended in the design, it takes large changes in vacuum to get it to pull back and vent).

Also not really sure why you didn't just take it up with ICS, as it's not like you were even asking HKS to do anything... except maybe pull them from the authorized dealer list for some reason.

Someone is wasting a lot of time for someone at HKS that had nothing to do with the problem.

Yeah...it's getting a little old, but I'm sure I would be bitter too if I got screwed out of 2 years with my car and $50k or whatever.

[BigM62]

Someone is wasting a lot of time for someone at HKS that had nothing to do with the problem.

Yeah...it's getting a little old, but I'm sure I would be bitter too if I got screwed out of 2 years with my car and $50k or whatever.

Maybe add another $50K to that, no?


Dude, we get it, ICS didn't do a good job on your car.

While its a noble thread, you must realize that a CF unit doesn't do much of anything at idle. It's RPMs are similar to that of a turbocharger at idle - that said, why would a "pull type" BOV matter? Dinan doesn't use any BPV's at all on their systems until the boost is raised. I think these threads should either go in a build thread or just stop. I understand and appreciate your frustration, but what is it going to be tomorrow, they used the wrong windshield wiper blades? We hear you - we really do.

You should try the "don't read this thread" option.

[someguy2800]

Fool me once, shame on you. Fool me twice, shame on me.

[chikinhed]

Fool me once, shame on you. Fool me twice, shame on me.

Oh, that's how that saying is suppose to go.

Sorry, I can't add anything else to this thread.