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02-20-2017, 03:56 PM | #2 (permalink) |
A True Z Fanatic
Join Date: Nov 2011
Location: Houston
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Drives: 2011 370ztt
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Mine's not a SC, but I clean and lube the BOVs every time I have the bumper off to clean the air filters. Turbosmart makes a BOV specific lube.
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02-21-2017, 08:43 AM | #7 (permalink) |
A True Z Fanatic
Join Date: Jun 2012
Location: Minneapolis
Posts: 2,651
Drives: 06 350Z , 09 370Z MT
Rep Power: 6834 |
Do you have the bosch or turbosmart bov? I dont have a record of sending the Tial out to you.
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02-21-2017, 08:55 AM | #9 (permalink) |
A True Z Fanatic
Join Date: Jun 2012
Location: Minneapolis
Posts: 2,651
Drives: 06 350Z , 09 370Z MT
Rep Power: 6834 |
That is why you get flutter. The Air to Air kit's intake design allows it to breath better, causing more air to vent, with no way of recirculating it back into the intake to quiet it down. That little bosch valve cant keep up. Even if you could recirc it, it would still make a good amount of noise. The turbosmart with the stock spring will be even worse. You could buy the lightest spring (blue) and that will help or try trimming the current spring.
The only good way to get rid of it is to upgrade to a Tial QRJ.
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02-21-2017, 10:02 AM | #11 (permalink) |
Track Member
Join Date: Dec 2015
Location: South Carolina
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Drives: 2017 nismo 370z
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I have the turbosmart valve with the red spring... its adjusted just one turn passed the o-ring... when cleaned I don't get any flutter but after about a month I notice very light flutter beginning as it get dirty
Light flutter prolly won't hurt anything but if it's stuck closed then what you hear is back surge on the supercharger adding extra wear |
02-21-2017, 10:20 AM | #12 (permalink) | |
A True Z Fanatic
Join Date: Jun 2012
Location: Minneapolis
Posts: 2,651
Drives: 06 350Z , 09 370Z MT
Rep Power: 6834 |
Quote:
The flutter means the air is not coming out of the supercharger properly. The noise you hear is the piston in the bpv opening and closing. It is very hard on the valve since instead of it just closing on throttle then opening when off throttle once, it is doing that like a 1000 times more. You will eventually wear your valve out. Also, the air needs to get out of the system or it tries to push itself back through the supercharger blades, basically trying to force it to slow down but it cant since it is belt driven so it causes unwanted stress on the bearings.
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02-21-2017, 11:37 AM | #13 (permalink) | |
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Quote:
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02-21-2017, 11:41 AM | #14 (permalink) |
A True Z Fanatic
Join Date: Jun 2012
Location: Minneapolis
Posts: 2,651
Drives: 06 350Z , 09 370Z MT
Rep Power: 6834 |
Easiest thing to do is just let me have it all sent to your house. I think you have the earlier version when i still had the 45* coming off the supercharger into a 2.5" right?
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