GTM supercharger install on G37 Vert

Nixlimited · 11-05-2010, 11:55 AM

Could you use something like a synchronic BOV? I'm not too familiar with SC bypass valves as I am a turbo guy myself.

Fezzik · 11-05-2010, 12:15 PM

Quote:

Originally Posted by weiboy718

Can the bpv spring might be too soft if it's bypassing during acceleration. possibly?

That's why i got the forged bypass valve. It comes with 3 springs and 2 washers to help change spring tension. I put the hardest spring in there with both washers and still the same thing.

Fezzik · 11-05-2010, 12:49 PM

Quote:

Originally Posted by Nixlimited

Could you use something like a synchronic BOV? I'm not too familiar with SC bypass valves as I am a turbo guy myself.

I'm not to familiar with turbo bypass valves. I saw on youtube what they do, Danny is going to a shop and we will see if they have anything. But again I'm not going to do too much (spend more money) because sam is working on it.

weiboy718 · 11-05-2010, 01:47 PM

Quote:

Originally Posted by Fezzik

That's why i got the forged bypass valve. It comes with 3 springs and 2 washers to help change spring tension. I put the hardest spring in there with both washers and still the same thing.

Can you adjust hard/soft setting on that bpv?

Fezzik · 11-05-2010, 02:12 PM

You cant adjust the spring much, maybe in truning the bypas valve cover one turn for softer. but the spacers are in there to make it harder.

CGMobile370Z · 11-05-2010, 04:10 PM

I was reading a Supercharged Ford Mustang Forum and they were having the same fluttering bypass problem. The solution was a larger bypass valve, one that can move more air or adding two bypass valves.

Fezzik · 11-05-2010, 05:17 PM

Sam did mention doing 2 bypass valves, but I havent had time to do that so. Did they add 2 bypass valves connected together or two in series (one closer to the supercharger and one further down)? I'll give this a try if its together since I now have 2 bypass valves.

G Fo12ce · 11-05-2010, 05:37 PM

I mentioned the HKS valve earlier. I understand probably not wanting to spend more but if you go to a pull type don't go and get some immitation.

Here's how it works. The SSQV is a pull type with 2 valves, one for response and one for high pressure relief.

Under boost (the purple area), the boost is always pushing on the back of the valve keeping it closed. It's impossible to leak since the valve is on the discharge side, not against the charge pipe.

Under light vaccuum/low boost operation the small valve in the ceter will actuate giving you a senstive small type valve.

Under high vaccuum/boost the largerand smaller valve will open together.

If I remeber these are rated around 500HP applications for one. They make different fittings for sound and recirculation. On the older post I also linked Turbosmart who makes lots of adapters. The push type you got work good too if you can size and spring it right, so not trying to knock your choice at all. I just found the HKS was always the least hassle on my turbo cars. Hope that helps if you decide to go that way. Good luck. Bad *** set up

Fezzik · 11-05-2010, 06:35 PM

cool. Yeah I'm not spending more. I just had a little free time as Sam is hard at work for Sema. I'm going to sit back and wait for him to come up with a solution now, which is hopefully in a week or two. I'm going to get a few more runs and send to sam and then dyno in a bout a week.

Fezzik · 11-06-2010, 01:07 AM

Took her out tonight... and all I can say is Holy COW. Its nuts how much this car does now. I did a couple of pulls and didnt realize i was already hitting 100 on the on ramp. I braked her down but its amazing how quick this will get there. Got a couple of video efuskay will post up later.

weiboy718 · 11-06-2010, 01:16 AM

Quote:

Originally Posted by Fezzik

Took her out tonight... and all I can say is Holy COW. Its nuts how much this car does now. I did a couple of pulls and didnt realize i was already hitting 100 on the on ramp. I braked her down but its amazing how quick this will get there. Got a couple of video efuskay will post up later.

nice!

efuseakay · 11-06-2010, 02:09 AM

I can vouch for that. I'm working on pulling the vids off the Flip cam. Looks like it's slow going right now, but I'll get it done, and I'll post them up soon...

P.S. I tried to hold the camera as steady as I could, but all that torque made it quite challenging.

efuseakay · 11-06-2010, 11:21 AM

Ok here are a few vids... cops were everywhere... lol

YouTube - GTM 2010 G37 Vert

YouTube - GTM 2010 G37 Vert

YouTube - GTM 2010 G37 Vert

YouTube - GTM 2010 G37 Vert

Q8y_drifter · 11-06-2010, 12:36 PM

Nice man. Keep the videos coming!
I'm sorry if I missed this but have you dyno'ed the car yet?

Fezzik · 11-06-2010, 12:59 PM

Not yet. I'm getting it broke in a few weeks before doing that. Maybe next week I'll have a dyno. I'm doing pulls and checking hoses and for leaks.

11-05-2010, 04:10 PM	#96 (permalink)
CGMobile370Z Base Member Join Date: Sep 2009 Location: Miami, FL Posts: 144 Drives: 2009 Nissan 370Z Rep Power: 16	I was reading a Supercharged Ford Mustang Forum and they were having the same fluttering bypass problem. The solution was a larger bypass valve, one that can move more air or adding two bypass valves. __________________ 370Z Touring/ Sports Package/ Stillen Gen3 Intake/ Stillen HFC/ NST Underdive Overdrive Pulleys/ FI Cat Back Exhaust/ Custom Headlights

11-05-2010, 05:37 PM	#98 (permalink)
G Fo12ce Premium Member Join Date: Nov 2009 Location: Socal Posts: 996 Drives: Sold! Rep Power: 52	I mentioned the HKS valve earlier. I understand probably not wanting to spend more but if you go to a pull type don't go and get some immitation. Here's how it works. The SSQV is a pull type with 2 valves, one for response and one for high pressure relief. Under boost (the purple area), the boost is always pushing on the back of the valve keeping it closed. It's impossible to leak since the valve is on the discharge side, not against the charge pipe. Under light vaccuum/low boost operation the small valve in the ceter will actuate giving you a senstive small type valve. Under high vaccuum/boost the largerand smaller valve will open together. If I remeber these are rated around 500HP applications for one. They make different fittings for sound and recirculation. On the older post I also linked Turbosmart who makes lots of adapters. The push type you got work good too if you can size and spring it right, so not trying to knock your choice at all. I just found the HKS was always the least hassle on my turbo cars. Hope that helps if you decide to go that way. Good luck. Bad * set up __________________ Nismo Suspension**: New Owners Check Here!

11-06-2010, 12:36 PM	#104 (permalink)
Q8y_drifter Enthusiast Member Join Date: Mar 2010 Location: Kuwait Posts: 306 Drives: 08 Infiniti G35 5AT Rep Power: 15	Nice man. Keep the videos coming! I'm sorry if I missed this but have you dyno'ed the car yet? __________________ 08 G35 5AT Sedan \| Stillen CBE \| Invidia HFC \| Injen CAI \| Uprev Tune \| Akebono BBK \| Tanabe Coilovers \| Hotchkis Sway Bars \| GTSpec FSB \| Black Headlights & Grille \| Volk GT-F Wheels \| Hankook V12 Evo Tires

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11-05-2010, 11:55 AM	#91 (permalink)
Nixlimited A True Z Fanatic Join Date: Aug 2009 Location: San Diego Posts: 1,235 Drives: 15 GT-R / 11 Prius Rep Power: 26	Could you use something like a synchronic BOV? I'm not too familiar with SC bypass valves as I am a turbo guy myself.

11-05-2010, 02:12 PM	#95 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 15	You cant adjust the spring much, maybe in truning the bypas valve cover one turn for softer. but the spacers are in there to make it harder.

11-05-2010, 05:17 PM	#97 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 15	Sam did mention doing 2 bypass valves, but I havent had time to do that so. Did they add 2 bypass valves connected together or two in series (one closer to the supercharger and one further down)? I'll give this a try if its together since I now have 2 bypass valves.

11-05-2010, 06:35 PM	#99 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 15	cool. Yeah I'm not spending more. I just had a little free time as Sam is hard at work for Sema. I'm going to sit back and wait for him to come up with a solution now, which is hopefully in a week or two. I'm going to get a few more runs and send to sam and then dyno in a bout a week.

11-06-2010, 01:07 AM	#100 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 15	Took her out tonight... and all I can say is Holy COW. Its nuts how much this car does now. I did a couple of pulls and didnt realize i was already hitting 100 on the on ramp. I braked her down but its amazing how quick this will get there. Got a couple of video efuskay will post up later.

11-06-2010, 02:09 AM	#102 (permalink)
efuseakay Enthusiast Member Join Date: Mar 2010 Location: The DAYNGA ZONE! Posts: 404 Drives: 2010 G37xS Sedan Rep Power: 15	I can vouch for that. I'm working on pulling the vids off the Flip cam. Looks like it's slow going right now, but I'll get it done, and I'll post them up soon... P.S. I tried to hold the camera as steady as I could, but all that torque made it quite challenging.

11-06-2010, 11:21 AM	#103 (permalink)
efuseakay Enthusiast Member Join Date: Mar 2010 Location: The DAYNGA ZONE! Posts: 404 Drives: 2010 G37xS Sedan Rep Power: 15	Ok here are a few vids... cops were everywhere... lol YouTube - GTM 2010 G37 Vert YouTube - GTM 2010 G37 Vert YouTube - GTM 2010 G37 Vert YouTube - GTM 2010 G37 Vert

11-06-2010, 12:59 PM	#105 (permalink)
Fezzik Base Member Join Date: Jun 2010 Location: Chicago Posts: 182 Drives: G37 Vert 6mt White Rep Power: 15	Not yet. I'm getting it broke in a few weeks before doing that. Maybe next week I'll have a dyno. I'm doing pulls and checking hoses and for leaks.